View Issue Details

IDCategoryLast Update
0008757bugs2021-07-28 04:57
Reporteral fAssigned To 
Reproducibilitysometimes 
Status newResolutionopen 
PlatformUbuntuOSLinuxOS Version(any)
Product Version6.7 
Fixed in Version 
Summary0008757: Ardour crashing
DescriptionSudden crashes where Ardour abruptly exits with no error message
Steps To ReproduceOpen existing project
Import file(s) to new tracks

Solo new track, start playback from start / home of track
Do multiple placements of playhead while playing back (to find the correct edit point)

Crash happens here, or sometimes after I repeat the procedure with another track.

Possibly after small edits like cutting and moving regions between tracks. Not sure since the crash is 'sometimes'.

After crash Studio controls show a count of several xruns
Additional InformationOn next start, Ardour is aware of the crash:

"This session appears to have been modified without save, or in middle of recording when Ardour or the computer was shutdown"

This is followed by a choice whether to "ignore crash data" or "Recover from crash"
Tags6.7, 6.8, Editor, Import

Activities

Hans Flikkema

2021-06-24 16:49

reporter   ~0026004

Hi

I have the same problems with Ardour 6.7 running on W10. I tried 6.7.0, 6.7.12 and 6.7.52
They all crash after one tot 10 minutes, with no recovery, no messages when I open existing projects. All these projects run smoothly without any problems using 6.6.346 and 6.5.51
I have to finish 2 important projects in the next 2 month so I re installed 6.6.346
I'm getting a bit worried for 6.5.0, also a official release had also major issues. I had to wiat for nightly build version 5.5.50 for smooth runnings.

al f

2021-07-20 12:54

reporter   ~0026066

I have been experiencing crashes with Ardour 6.8 as well.

I am editing an interview which means extensive splitting, combining and moving of regions. I believe my work is not heavy on resources as the audio lasts less than an hour and I am working with at most three tracks (hardware is 32 GB RAM with an Intel Core i7 processor).

There is a sudden burst of xruns (or the crash causes them, I can't determine which) and Ardour just exits without any message.

I am not sure how to reproduce the crash, but it happens often - four or five times today during some two or three hours of editing. The crash changes at least one setting: on restart of Ardour, the transport does not follow the playhead and I have to manually set Transport > Folllow Playhead.

Thankfully, there is usually not much work lost, partly because of saving frequently and partly because Ardours "recover from crash" option at restart leaves out just the few last operations.

al f

2021-07-20 12:57

reporter   ~0026067

Also, the interview files are directly recorded into Ardour, not imported as the tag from my original post implies.

al f

2021-07-21 06:10

reporter   ~0026068

I've been reading https://ardour.org/debugging_ardour and understand I should provide a backtrace. The guide tells me to use gdb, directing me to https://www.gnu.org/software/gdb/ for downloading.

I would prefer running something from the repositories of my (K)Ubuntu Studio install. Could I get some pointer for that, or is gdb required?

al f

2021-07-21 11:33

reporter   ~0026069

From the debugging guide I followed option 2, typing $ ulimit -c unlimited after which i started Ardour

I did NOT download Ardour with debugging symbols (if that's a requirement, let me know). The core dump is more than 600 MB and can't be uploaded here, so I put it at https://mega.nz/folder/NThzWCAJ#hBluhOmOunCziKDUfpKDvA

Do I need to "undo" ulimit -c unlimited - if so, how?

al f

2021-07-21 15:38

reporter   ~0026071

I uploaded two new core dumps to the location given above. On both occasions Ardour crashed when scrolling in the navigation field at the bottom of the scren to zoom in for editing.

al f

2021-07-21 21:01

reporter   ~0026072

These crashes does not seem to happen with Ardour 6.6, which I've been running for the last few hours.

I've been using the new "Region Cue Markers" extensively, otherwise I don't think I'm using functions in 6.8 not present in 6.6.

Sorry if I'm posting too many times here...

al f

2021-07-22 20:34

reporter   ~0026073

After reading the reporting guide more closely, I see I didn't do it right. Attached here is the log from gdb, hope I got it right this time...
Ardour exits with segmentation fault

ardour-gdb.log (61,237 bytes)

paul

2021-07-22 21:42

administrator   ~0026074

It would be (more) useful if you could get a backtrace from a build with debugging symbols. This doesn't offer much context.

Also, some clue about what you were doing when the crash happened. If we can't reproduce it, it's hard to fix it.

al f

2021-07-22 21:55

reporter   ~0026075

Is there a binary with debugging symbols, or dpo I have to bulid?

I am editing when the crash happens: splitting, cutting, moving and combining regions. Also removing or inserting time and using / editing markers, both normal markers on the timeline and the newer region cue markers. I am quite sure the crash does not happen at the same action each time. Sometimes it will be after closing one session and opening the next, other times when moving a region or opening the menu to insert or remove time.

I also experience strange and erratic behaviour when inserting time (it is inserted at some random place to the left of the edit point (I am considering a separate bug report for this, though I have a feeling they have the same cause).

When crashing there are multiiple xruns counted by studio controls, but I haven't been able to determine if the xruns are caused by the crash or causing it.

paul

2021-07-22 22:12

administrator   ~0026076

You can grab one from nightly.ardour.org (there are free/demo copies which are fine for this purpose. They can be installed in parallel with any other version of Ardour whether from ardour.org or a distro.

xruns do not cause crashes.

al f

2021-07-22 22:45

reporter   ~0026077

Ok, so I tested with the debug version. Ardour crashes on opening a session after opening and closing several.

gdb-ardour-03.txt (60,983 bytes)
Signal        Stop	Print	Pass to program	Description
SIG32         No	No	Yes		Real-time event 32
Starting program: /opt/Ardour-6.8.209-dbg/bin/ardour-6.8.209 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe824f700 (LWP 11771)]
[New Thread 0x7fffe7a4e700 (LWP 11772)]
[New Thread 0x7fffe724d700 (LWP 11773)]
[New Thread 0x7fffe6a4c700 (LWP 11774)]
[New Thread 0x7fffd3de5700 (LWP 11775)]
[Thread 0x7fffd3de5700 (LWP 11775) exited]
[New Thread 0x7fffd3de5700 (LWP 11776)]
[New Thread 0x7fffd1601700 (LWP 11777)]
[New Thread 0x7fffcb97d700 (LWP 11778)]
[New Thread 0x7fffcaeca700 (LWP 11779)]
[New Thread 0x7fffcae49700 (LWP 11780)]
[New Thread 0x7fffca648700 (LWP 11781)]
[New Thread 0x7fffca453700 (LWP 11782)]
[Thread 0x7fffca453700 (LWP 11782) exited]
[Thread 0x7fffca648700 (LWP 11781) exited]
[New Thread 0x7fffca648700 (LWP 11783)]
[New Thread 0x7fffca453700 (LWP 11784)]
[Thread 0x7fffca453700 (LWP 11784) exited]
[Thread 0x7fffca648700 (LWP 11783) exited]
[Thread 0x7fffcae49700 (LWP 11780) exited]
[New Thread 0x7fffcae49700 (LWP 11785)]
[New Thread 0x7fffca3d2700 (LWP 11786)]
[New Thread 0x7fffc9bd1700 (LWP 11787)]
[Thread 0x7fffcaeca700 (LWP 11779) exited]
[Thread 0x7fffc9bd1700 (LWP 11787) exited]
[Thread 0x7fffcb97d700 (LWP 11778) exited]
[New Thread 0x7fffca648700 (LWP 11788)]
[New Thread 0x7fffca453700 (LWP 11789)]
[New Thread 0x7fffc8f82700 (LWP 11790)]
[New Thread 0x7fffc9bd1700 (LWP 11791)]
[Detaching after vfork from child process 11792]
[Thread 0x7fffca3d2700 (LWP 11786) exited]
[New Thread 0x7fffca3d2700 (LWP 11796)]
[Thread 0x7fffca3d2700 (LWP 11796) exited]
[Detaching after vfork from child process 11797]
[New Thread 0x7fffca3d2700 (LWP 11798)]
[Thread 0x7fffca3d2700 (LWP 11798) exited]
[New Thread 0x7fffca3d2700 (LWP 11799)]
[New Thread 0x7fffd000e900 (LWP 11800)]
[New Thread 0x7fffc87bd900 (LWP 11801)]
[New Thread 0x7fffc87b1900 (LWP 11802)]
[New Thread 0x7fffc87a5900 (LWP 11803)]
[New Thread 0x7fffc8799900 (LWP 11804)]
[New Thread 0x7fffc878d900 (LWP 11805)]
[New Thread 0x7fffc8781900 (LWP 11806)]
[New Thread 0x7fffc8776700 (LWP 11807)]
[New Thread 0x7fffc86f5700 (LWP 11808)]
[New Thread 0x7fffc8674700 (LWP 11809)]
[New Thread 0x7fffc85f3700 (LWP 11810)]
[New Thread 0x7fffc8572700 (LWP 11811)]
[New Thread 0x7fffc84f1700 (LWP 11812)]
[New Thread 0x7fffc8470700 (LWP 11813)]
[New Thread 0x7fffc83ef700 (LWP 11815)]
[New Thread 0x7fff67fff700 (LWP 11816)]
[Thread 0x7fffca3d2700 (LWP 11799) exited]
[New Thread 0x7fffca3d2700 (LWP 11817)]
[New Thread 0x7fff65633700 (LWP 11818)]
[New Thread 0x7fff64e32700 (LWP 11819)]
[New Thread 0x7fff57fff700 (LWP 11820)]
[New Thread 0x7fff577fe700 (LWP 11821)]
[New Thread 0x7fff56ffd700 (LWP 11822)]
[New Thread 0x7fff567fc700 (LWP 11823)]
[New Thread 0x7fff55ffb700 (LWP 11824)]
[New Thread 0x7fff557fa700 (LWP 11825)]
[New Thread 0x7fff54ff9700 (LWP 11826)]
[Thread 0x7fffc9bd1700 (LWP 11791) exited]
[Thread 0x7fff65633700 (LWP 11818) exited]
[Thread 0x7fffc83ef700 (LWP 11815) exited]
[Thread 0x7fffc84f1700 (LWP 11812) exited]
[Thread 0x7fffc8470700 (LWP 11813) exited]
[Thread 0x7fffc8572700 (LWP 11811) exited]
[Thread 0x7fffc85f3700 (LWP 11810) exited]
[Thread 0x7fffc8674700 (LWP 11809) exited]
[Thread 0x7fffc86f5700 (LWP 11808) exited]
[Thread 0x7fffc8776700 (LWP 11807) exited]
[Thread 0x7fff64e32700 (LWP 11819) exited]
[Thread 0x7fff54ff9700 (LWP 11826) exited]
[Thread 0x7fff557fa700 (LWP 11825) exited]
[Thread 0x7fff55ffb700 (LWP 11824) exited]
[Thread 0x7fff567fc700 (LWP 11823) exited]
[Thread 0x7fff56ffd700 (LWP 11822) exited]
[Thread 0x7fff577fe700 (LWP 11821) exited]
[Thread 0x7fff57fff700 (LWP 11820) exited]
[Thread 0x7fffca3d2700 (LWP 11817) exited]
[Thread 0x7fff67fff700 (LWP 11816) exited]
[Thread 0x7fffc8781900 (LWP 11806) exited]
[Thread 0x7fffc878d900 (LWP 11805) exited]
[Thread 0x7fffc8799900 (LWP 11804) exited]
[Thread 0x7fffc87a5900 (LWP 11803) exited]
[Thread 0x7fffc87b1900 (LWP 11802) exited]
[Thread 0x7fffc87bd900 (LWP 11801) exited]
[Thread 0x7fffd000e900 (LWP 11800) exited]
[New Thread 0x7fff67fff700 (LWP 11848)]
[New Thread 0x7fffca3d2700 (LWP 11849)]
[Thread 0x7fff67fff700 (LWP 11848) exited]
[New Thread 0x7fffc8781900 (LWP 11853)]
[New Thread 0x7fffc878d900 (LWP 11854)]
[New Thread 0x7fffc8799900 (LWP 11855)]
[New Thread 0x7fffc87a5900 (LWP 11856)]
[New Thread 0x7fffc87b1900 (LWP 11857)]
[New Thread 0x7fffc87bd900 (LWP 11858)]
[New Thread 0x7fffd000e900 (LWP 11859)]
[New Thread 0x7fffc9bd1700 (LWP 11860)]
[New Thread 0x7fffc9b50700 (LWP 11861)]
[New Thread 0x7fffc9acf700 (LWP 11862)]
[New Thread 0x7fffc9a4e700 (LWP 11863)]
[New Thread 0x7fffc99cd700 (LWP 11864)]
[New Thread 0x7fffc994c700 (LWP 11865)]
[New Thread 0x7fffc98cb700 (LWP 11866)]
[New Thread 0x7fffc984a700 (LWP 11867)]
[New Thread 0x7fff67fff700 (LWP 11868)]
[New Thread 0x7fff54ff9700 (LWP 11869)]
[New Thread 0x7fff557fa700 (LWP 11870)]
[New Thread 0x7fff677fe700 (LWP 11871)]
[New Thread 0x7fff66ffd700 (LWP 11872)]
[New Thread 0x7fff667fc700 (LWP 11873)]
[New Thread 0x7fff65633700 (LWP 11874)]
[New Thread 0x7fff64e32700 (LWP 11875)]
[New Thread 0x7fff57fff700 (LWP 11876)]
[New Thread 0x7fff577fe700 (LWP 11877)]
[New Thread 0x7fff56ffd700 (LWP 11878)]
[Thread 0x7fffca3d2700 (LWP 11849) exited]
[Thread 0x7fff557fa700 (LWP 11870) exited]
[Thread 0x7fffc984a700 (LWP 11867) exited]
[Thread 0x7fffc98cb700 (LWP 11866) exited]
[Thread 0x7fffc994c700 (LWP 11865) exited]
[Thread 0x7fffc99cd700 (LWP 11864) exited]
[Thread 0x7fffc9a4e700 (LWP 11863) exited]
[Thread 0x7fffc9acf700 (LWP 11862) exited]
[Thread 0x7fffc9b50700 (LWP 11861) exited]
[Thread 0x7fffc9bd1700 (LWP 11860) exited]
[Thread 0x7fff677fe700 (LWP 11871) exited]
[Thread 0x7fff56ffd700 (LWP 11878) exited]
[Thread 0x7fff577fe700 (LWP 11877) exited]
[Thread 0x7fff57fff700 (LWP 11876) exited]
[Thread 0x7fff64e32700 (LWP 11875) exited]
[Thread 0x7fff65633700 (LWP 11874) exited]
[Thread 0x7fff667fc700 (LWP 11873) exited]
[Thread 0x7fff66ffd700 (LWP 11872) exited]
[Thread 0x7fff54ff9700 (LWP 11869) exited]
[Thread 0x7fff67fff700 (LWP 11868) exited]
[Thread 0x7fffd000e900 (LWP 11859) exited]
[Thread 0x7fffc87bd900 (LWP 11858) exited]
[Thread 0x7fffc87b1900 (LWP 11857) exited]
[Thread 0x7fffc87a5900 (LWP 11856) exited]
[Thread 0x7fffc8799900 (LWP 11855) exited]
[Thread 0x7fffc878d900 (LWP 11854) exited]
[Thread 0x7fffc8781900 (LWP 11853) exited]
[New Thread 0x7fff67fff700 (LWP 11901)]
[New Thread 0x7fff54ff9700 (LWP 11902)]
[Thread 0x7fff54ff9700 (LWP 11902) exited]
[New Thread 0x7fffd000e900 (LWP 11906)]
[New Thread 0x7fffc87bd900 (LWP 11907)]
[New Thread 0x7fffc87b1900 (LWP 11908)]
[New Thread 0x7fffc87a5900 (LWP 11909)]
[New Thread 0x7fffc8799900 (LWP 11910)]
[New Thread 0x7fffc878d900 (LWP 11911)]
[New Thread 0x7fffc8781900 (LWP 11912)]
[New Thread 0x7fffca3d2700 (LWP 11913)]
[New Thread 0x7fffca351700 (LWP 11914)]
[New Thread 0x7fffca2d0700 (LWP 11915)]
[New Thread 0x7fffca24f700 (LWP 11916)]
[New Thread 0x7fffca1ce700 (LWP 11917)]
[New Thread 0x7fffca14d700 (LWP 11918)]
[New Thread 0x7fffca0cc700 (LWP 11919)]
[New Thread 0x7fffca04b700 (LWP 11920)]
[New Thread 0x7fff54ff9700 (LWP 11921)]
[New Thread 0x7fff56ffd700 (LWP 11922)]
[New Thread 0x7fff577fe700 (LWP 11923)]
[New Thread 0x7fffc9fca700 (LWP 11924)]
[New Thread 0x7fff677fe700 (LWP 11925)]
[New Thread 0x7fff66ffd700 (LWP 11926)]
[New Thread 0x7fff667fc700 (LWP 11927)]
[New Thread 0x7fff65633700 (LWP 11928)]
[New Thread 0x7fff64e32700 (LWP 11929)]
[New Thread 0x7fff57fff700 (LWP 11930)]
[New Thread 0x7fff567fc700 (LWP 11931)]
[Thread 0x7fff67fff700 (LWP 11901) exited]
[Thread 0x7fff577fe700 (LWP 11923) exited]
[Thread 0x7fffca04b700 (LWP 11920) exited]
[Thread 0x7fff567fc700 (LWP 11931) exited]
[Thread 0x7fff57fff700 (LWP 11930) exited]
[Thread 0x7fff64e32700 (LWP 11929) exited]
[Thread 0x7fff65633700 (LWP 11928) exited]
[Thread 0x7fff667fc700 (LWP 11927) exited]
[Thread 0x7fff66ffd700 (LWP 11926) exited]
[Thread 0x7fff677fe700 (LWP 11925) exited]
[Thread 0x7fffc9fca700 (LWP 11924) exited]
[Thread 0x7fffca0cc700 (LWP 11919) exited]
[Thread 0x7fffca14d700 (LWP 11918) exited]
[Thread 0x7fffca1ce700 (LWP 11917) exited]
[Thread 0x7fffca24f700 (LWP 11916) exited]
[Thread 0x7fffca2d0700 (LWP 11915) exited]
[Thread 0x7fffca351700 (LWP 11914) exited]
[Thread 0x7fffca3d2700 (LWP 11913) exited]
[Thread 0x7fff56ffd700 (LWP 11922) exited]
[Thread 0x7fff54ff9700 (LWP 11921) exited]
[Thread 0x7fffc8781900 (LWP 11912) exited]
[Thread 0x7fffc878d900 (LWP 11911) exited]
[Thread 0x7fffc8799900 (LWP 11910) exited]
[Thread 0x7fffc87a5900 (LWP 11909) exited]
[Thread 0x7fffc87b1900 (LWP 11908) exited]
[Thread 0x7fffc87bd900 (LWP 11907) exited]
[Thread 0x7fffd000e900 (LWP 11906) exited]
[New Thread 0x7fff54ff9700 (LWP 11934)]
[New Thread 0x7fff56ffd700 (LWP 11935)]
[Thread 0x7fff56ffd700 (LWP 11935) exited]
[New Thread 0x7fffc8781900 (LWP 11936)]
[New Thread 0x7fffc878d900 (LWP 11937)]
[New Thread 0x7fffc8799900 (LWP 11938)]
[New Thread 0x7fffc87a5900 (LWP 11939)]
[New Thread 0x7fffc87b1900 (LWP 11940)]
[New Thread 0x7fffc87bd900 (LWP 11941)]
[New Thread 0x7fffd000e900 (LWP 11942)]
[New Thread 0x7fffca0cc700 (LWP 11943)]
[New Thread 0x7fffca14d700 (LWP 11944)]
[New Thread 0x7fffca1ce700 (LWP 11945)]
[New Thread 0x7fffca24f700 (LWP 11946)]
[New Thread 0x7fffca2d0700 (LWP 11947)]
[New Thread 0x7fffca351700 (LWP 11948)]
[New Thread 0x7fffca3d2700 (LWP 11949)]
[New Thread 0x7fffca04b700 (LWP 11950)]
[New Thread 0x7fff56ffd700 (LWP 11951)]
[New Thread 0x7fffc9fca700 (LWP 11952)]
[New Thread 0x7fff567fc700 (LWP 11953)]
[New Thread 0x7fff67fff700 (LWP 11954)]
[New Thread 0x7fff677fe700 (LWP 11955)]
[New Thread 0x7fff66ffd700 (LWP 11956)]
[New Thread 0x7fff667fc700 (LWP 11957)]
[New Thread 0x7fff65633700 (LWP 11958)]
[New Thread 0x7fff64e32700 (LWP 11959)]
[New Thread 0x7fff57fff700 (LWP 11960)]
[New Thread 0x7fff577fe700 (LWP 11961)]
[Thread 0x7fff54ff9700 (LWP 11934) exited]
[Thread 0x7fff567fc700 (LWP 11953) exited]
[Thread 0x7fffca04b700 (LWP 11950) exited]
[Thread 0x7fff577fe700 (LWP 11961) exited]
[Thread 0x7fff57fff700 (LWP 11960) exited]
[Thread 0x7fff64e32700 (LWP 11959) exited]
[Thread 0x7fff65633700 (LWP 11958) exited]
[Thread 0x7fff667fc700 (LWP 11957) exited]
[Thread 0x7fff66ffd700 (LWP 11956) exited]
[Thread 0x7fff677fe700 (LWP 11955) exited]
[Thread 0x7fff67fff700 (LWP 11954) exited]
[Thread 0x7fffca3d2700 (LWP 11949) exited]
[Thread 0x7fffca351700 (LWP 11948) exited]
[Thread 0x7fffca2d0700 (LWP 11947) exited]
[Thread 0x7fffca24f700 (LWP 11946) exited]
[Thread 0x7fffca1ce700 (LWP 11945) exited]
[Thread 0x7fffca14d700 (LWP 11944) exited]
[Thread 0x7fffca0cc700 (LWP 11943) exited]
[Thread 0x7fffc9fca700 (LWP 11952) exited]
[Thread 0x7fff56ffd700 (LWP 11951) exited]
[Thread 0x7fffd000e900 (LWP 11942) exited]
[Thread 0x7fffc87bd900 (LWP 11941) exited]
[Thread 0x7fffc87b1900 (LWP 11940) exited]
[Thread 0x7fffc87a5900 (LWP 11939) exited]
[Thread 0x7fffc8799900 (LWP 11938) exited]
[Thread 0x7fffc878d900 (LWP 11937) exited]
[Thread 0x7fffc8781900 (LWP 11936) exited]
[New Thread 0x7fff56ffd700 (LWP 11977)]
[New Thread 0x7fffc9fca700 (LWP 11979)]
[Thread 0x7fff56ffd700 (LWP 11977) exited]
[New Thread 0x7fffd000e900 (LWP 11980)]
[New Thread 0x7fffc87bd900 (LWP 11981)]
[New Thread 0x7fffc87b1900 (LWP 11982)]
[New Thread 0x7fffc87a5900 (LWP 11983)]
[New Thread 0x7fffc8799900 (LWP 11984)]
[New Thread 0x7fffc878d900 (LWP 11985)]
[New Thread 0x7fffc8781900 (LWP 11986)]
[New Thread 0x7fffca3d2700 (LWP 11987)]
[New Thread 0x7fffca351700 (LWP 11988)]
[New Thread 0x7fffca2d0700 (LWP 11989)]
[New Thread 0x7fffca24f700 (LWP 11990)]
[New Thread 0x7fffca1ce700 (LWP 11991)]
[New Thread 0x7fffca14d700 (LWP 11992)]
[New Thread 0x7fffca0cc700 (LWP 11993)]
[New Thread 0x7fffca04b700 (LWP 11994)]
[New Thread 0x7fff56ffd700 (LWP 11995)]
[New Thread 0x7fff67fff700 (LWP 11996)]
[New Thread 0x7fff577fe700 (LWP 11997)]
[New Thread 0x7fff677fe700 (LWP 11998)]

Thread 1 "ArdourGUI" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()

Thread 156 (Thread 0x7fff677fe700 (LWP 11998)):
#0  0x00007fffecb623bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fff677fdbb0, rem=0x7fff677fdbc0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007fffecb68047 in __GI___nanosleep (requested_time=<optimized out>, remaining=<optimized out>) at nanosleep.c:27
#2  0x00007ffff2e8ba38 in g_usleep () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff6a3cfa9 in ARDOUR::AutomationWatch::thread (this=0x55555ff34000) at ../libs/ardour/automation_watch.cc:195
#4  0x00007ffff6a4277d in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0x55555f9931a0, p=0x55555ff34000) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6a423c2 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0x55555f9931b0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#6  0x00007ffff6a41ae3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0x55555f9931a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#7  0x00007ffff6a41a64 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator() (this=0x55555f9931a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00007ffff6a412c2 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::call_it (rep=0x55555f993170) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 155 (Thread 0x7fff577fe700 (LWP 11997)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555559ef8798) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555559ef8748, cond=0x555559ef8770) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x555559ef8770, mutex=0x555559ef8748) at pthread_cond_wait.c:638
#3  0x00007ffff70a1837 in ARDOUR::Session::auto_connect_thread_run (this=0x555559ef67c0) at ../libs/ardour/session.cc:7207
#4  0x00007ffff70a135e in ARDOUR::Session::auto_connect_thread (arg=0x555559ef67c0) at ../libs/ardour/session.cc:7138
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 154 (Thread 0x7fff67fff700 (LWP 11996)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555559ef872c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555559ef86d8, cond=0x555559ef8700) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x555559ef8700, mutex=0x555559ef86d8) at pthread_cond_wait.c:638
#3  0x00007ffff711cc07 in ARDOUR::Session::emit_thread_run (this=0x555559ef67c0) at ../libs/ardour/session_process.cc:1137
#4  0x00007ffff711cba4 in ARDOUR::Session::emit_thread (arg=0x555559ef67c0) at ../libs/ardour/session_process.cc:1126
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 153 (Thread 0x7fff56ffd700 (LWP 11995)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x7fff88001c30, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2e5ad66 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2e5b0f2 in g_main_loop_run () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff4094db4 in BaseUI::main_thread (this=0x555559581de0) at ../libs/pbd/base_ui.cc:101
#4  0x00007ffff4098f46 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x555565763478) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff4098b86 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x555565763470) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00007ffff40985c7 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x555565763440) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 152 (Thread 0x7fffca04b700 (LWP 11994)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x7fffca04a318, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff40aacee in CrossThreadChannel::poll_for_request (this=0x5555650039d8) at ../libs/pbd/crossthread.posix.cc:102
#2  0x00007ffff40aad57 in CrossThreadChannel::receive (this=0x5555650039d8, msg=@0x7fffca04a3ef: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:123
#3  0x00007ffff6a52abe in ARDOUR::Butler::thread_work (this=0x555565003940) at ../libs/ardour/butler.cc:185
#4  0x00007ffff6a5283f in ARDOUR::Butler::_thread_work (arg=0x555565003940) at ../libs/ardour/butler.cc:166
#5  0x00007ffff40ce0c4 in fake_thread_start (arg=0x55555ad35bc0) at ../libs/pbd/pthread_utils.cc:100
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 151 (Thread 0x7fffca0cc700 (LWP 11993)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca0cbcf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca0cbd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca0cbcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca0cbcf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555565064bd0) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 150 (Thread 0x7fffca14d700 (LWP 11992)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca14ccf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca14cd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca14ccf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca14ccf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555fe33510) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 149 (Thread 0x7fffca1ce700 (LWP 11991)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca1cdcf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca1cdd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca1cdcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca1cdcf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555565ba4fc0) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 148 (Thread 0x7fffca24f700 (LWP 11990)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca24ecf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca24ed08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca24ecf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca24ecf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555565069b50) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 147 (Thread 0x7fffca2d0700 (LWP 11989)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555557843300) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555557843300, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555557843300, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555557843300) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b82f54 in ARDOUR::Graph::reached_terminal_node (this=0x555557843140) at ../libs/ardour/graph.cc:301
#5  0x00007ffff6b8b15b in ARDOUR::GraphNode::finish (this=0x5555583aae10, chain=0) at ../libs/ardour/graphnode.cc:74
#6  0x00007ffff6b864f6 in ARDOUR::GraphNode::run (this=0x5555583aae10, chain=0) at ../libs/ardour/ardour/graphnode.h:65
#7  0x00007ffff6b83d34 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:442
#8  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#9  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca2cfcf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#10 0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca2cfd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#11 0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca2cfcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#12 0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#13 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca2cfcf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#14 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555565069c90) at ../libs/backends/jack/jack_audiobackend.cc:953
#15 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#16 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 146 (Thread 0x7fffca351700 (LWP 11988)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x555557843140) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca350cf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca350d08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca350cf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca350cf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55556508ba20) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 145 (Thread 0x7fffca3d2700 (LWP 11987)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5555578432d8) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x5555578432d8, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x5555578432d8) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x555557843140) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b84460 in ARDOUR::Graph::main_thread (this=0x555557843140) at ../libs/ardour/graph.cc:523
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffca3d1cf8, p=0x555557843140) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffca3d1d08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffca3d1cf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffca3d1cf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555ad7b350) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 144 (Thread 0x7fffc8781900 (LWP 11986)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 143 (Thread 0x7fffc878d900 (LWP 11985)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 142 (Thread 0x7fffc8799900 (LWP 11984)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 141 (Thread 0x7fffc87a5900 (LWP 11983)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 140 (Thread 0x7fffc87b1900 (LWP 11982)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 139 (Thread 0x7fffc87bd900 (LWP 11981)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 138 (Thread 0x7fffd000e900 (LWP 11980)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x555559f77890) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x555559f77890, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x555559f77890) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x555559f77860) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 137 (Thread 0x7fffc9fca700 (LWP 11979)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabf61 in g_cond_wait_until () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2e263fb in g_async_queue_timeout_pop () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff2e8aa14 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fffc8f82700 (LWP 11790)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fffd00ee5bc in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffd00ee6c5 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffd00d4b79 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd00d3463 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffcbbcef06 in WJACK_cycle_wait (client=0x5555575e5cd0) at ../libs/backends/jack/weak_libjack.def:95
#6  0x00007fffcbbaa8a8 in ARDOUR::JACKAudioBackend::process_thread (this=0x555557b9c000) at ../libs/backends/jack/jack_audiobackend.cc:982
#7  0x00007fffcbbaa830 in ARDOUR::JACKAudioBackend::_process_thread (arg=0x555557b9c000) at ../libs/backends/jack/jack_audiobackend.cc:961
#8  0x00007fffd00d33c7 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#9  0x00007fffd00ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fffca453700 (LWP 11789)):
#0  __libc_read (nbytes=4, buf=0x7fffca452b80, fd=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __libc_read (fd=16, buf=0x7fffca452b80, nbytes=4) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fffd00edb12 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffd00f29ed in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd00ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fffca648700 (LWP 11788)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555584c7018) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555584c6fc0, cond=0x5555584c6ff0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555584c6ff0, mutex=0x5555584c6fc0) at pthread_cond_wait.c:638
#3  0x00007fffd00ed382 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd00e4dfd in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffd00ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fffcae49700 (LWP 11785)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x5555576c63c0, nfds=2, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2e5ad66 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2e5ae7c in g_main_context_iteration () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff2e5aec1 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffd1601700 (LWP 11777)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69dca8a in ARDOUR::AudioEngine::do_devicelist_update (this=0x555557aab480) at ../libs/ardour/audioengine.cc:720
#3  0x00007ffff69eaf45 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5555579dbea0, p=0x555557aab480) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff69ea8ec in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x5555579dbeb0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff69e9f59 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x5555579dbea0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff69e95ec in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x5555579dbea0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff69e8668 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x5555579dbe70) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffd3de5700 (LWP 11776)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69dc84b in ARDOUR::AudioEngine::do_reset_backend (this=0x555557aab480) at ../libs/ardour/audioengine.cc:684
#3  0x00007ffff69eaf45 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5555579dbf40, p=0x555557aab480) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff69ea8ec in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x5555579dbf50, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff69e9f59 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x5555579dbf40) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff69e95ec in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x5555579dbf40) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff69e8668 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x5555579dbf10) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffe6a4c700 (LWP 11774)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69901cc in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:93
#3  0x00007ffff698ffb8 in analyser_work () at ../libs/ardour/analyser.cc:58
#4  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555557391788) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555557391780) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555557391750) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fffe724d700 (LWP 11773)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71b3134 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x5555573803d8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555573803d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555573803a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fffe7a4e700 (LWP 11772)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71b3134 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555557380508) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555557380500) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555573804d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fffe824f700 (LWP 11771)):
#0  0x00007fffecb623bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fffe824ebf0, rem=0x7fffe824ec00) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007fffecb68047 in __GI___nanosleep (requested_time=<optimized out>, remaining=<optimized out>) at nanosleep.c:27
#2  0x00007ffff2e8ba38 in g_usleep () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00005555568e303c in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:468
#4  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#5  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fffe8e2c900 (LWP 11767)):
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff4ba7581 in ArdourCanvas::Item::bounding_box (this=0x555560221af0, for_own_purposes=false) at ../libs/canvas/item.cc:585
#2  0x00007ffff4ba6b89 in ArdourCanvas::Item::set_position (this=0x555560221af0, p=...) at ../libs/canvas/item.cc:262
#3  0x00007ffff4ba6cc2 in ArdourCanvas::Item::set_x_position (this=0x555560221af0, x=-3) at ../libs/canvas/item.cc:291
#4  0x000055555620a514 in ArdourMarker::set_position (this=0x555565e83c90, sample=0) at ../gtk2_ardour/marker.cc:536
#5  0x000055555620a558 in ArdourMarker::reposition (this=0x555565e83c90) at ../gtk2_ardour/marker.cc:544
#6  0x000055555620db52 in sigc::bound_mem_functor0<void, ArdourMarker>::operator() (this=0x55555fa0b288) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#7  0x000055555620d484 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourMarker> >::operator() (this=0x55555fa0b280) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x000055555620c9df in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourMarker>, void>::call_it (rep=0x55555fa0b250) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x0000555555c2b3fe in sigc::internal::signal_emit0<void, sigc::nil>::emit (impl=0x55555a3326d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:772
#10 0x0000555555c35de6 in sigc::signal0<void, sigc::nil>::emit (this=0x5555581147d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:2679
#11 0x0000555555c2f444 in sigc::signal0<void, sigc::nil>::operator() (this=0x5555581147d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:2687
#12 0x0000555555dc7725 in Editor::on_samples_per_pixel_changed (this=0x5555581144f0) at ../gtk2_ardour/editor.cc:4637
#13 0x0000555555dc7a6e in Editor::visual_changer (this=0x5555581144f0, vc=...) at ../gtk2_ardour/editor.cc:4761
#14 0x0000555555dc797e in Editor::idle_visual_changer (this=0x5555581144f0) at ../gtk2_ardour/editor.cc:4726
#15 0x0000555555dc7896 in Editor::_idle_visual_changer (arg=0x5555581144f0) at ../gtk2_ardour/editor.cc:4684
#16 0x00007ffff2e5aa2a in g_main_context_dispatch () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#17 0x00007ffff2e5add0 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#18 0x00007ffff2e5ae7c in g_main_context_iteration () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#19 0x00007ffff244b601 in gtk_main_iteration () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#20 0x00007ffff447a929 in Gtkmm2ext::UI::flush_pending (this=0x555557ae2700, timeout=10) at ../libs/gtkmm2ext/gtk_ui.cc:781
#21 0x0000555555cb6fe0 in ARDOUR_UI::load_session_stage_two (this=0x555557ae2700, path="/home/alfh/Radio/Kirken som tilfluktssted/Radioserie lydklipp/1994-02-17 Dagsnytt 18", snap_name="1994-02-17 Dagsnytt 18", mix_template="") at ../gtk2_ardour/ardour_ui_session.cc:529
#22 0x0000555555cb6577 in ARDOUR_UI::load_session (this=0x555557ae2700, path="/home/alfh/Radio/Kirken som tilfluktssted/Radioserie lydklipp/1994-02-17 Dagsnytt 18", snap_name="1994-02-17 Dagsnytt 18", mix_template="") at ../gtk2_ardour/ardour_ui_session.cc:360
#23 0x0000555555cb5e8d in ARDOUR_UI::session_dialog_response_handler (this=0x555557ae2700, response=-3, session_dialog=0x55556019d290) at ../gtk2_ardour/ardour_ui_session.cc:293
#24 0x0000555555cc22b6 in sigc::bound_mem_functor2<void, ARDOUR_UI, int, SessionDialog*>::operator() (this=0x55555c6267c0, _A_a1=@0x7fffffffc0cc: -3, _A_a2=@0x55555c6267e0: 0x55556019d290) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1927
#25 0x0000555555cc1679 in sigc::adaptor_functor<sigc::bound_mem_functor2<void, ARDOUR_UI, int, SessionDialog*> >::operator()<int const&, SessionDialog*&> (this=0x55555c6267b8, _A_arg1=@0x7fffffffc0cc: -3, _A_arg2=@0x55555c6267e0: 0x55556019d290) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:108
#26 0x0000555555cc0898 in sigc::bind_functor<-1, sigc::bound_mem_functor2<void, ARDOUR_UI, int, SessionDialog*>, SessionDialog*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator()<int const&> (this=0x55555c6267b0, _A_arg1=@0x7fffffffc0cc: -3) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/bind.h:1135
#27 0x0000555555cbfde4 in sigc::internal::slot_call1<sigc::bind_functor<-1, sigc::bound_mem_functor2<void, ARDOUR_UI, int, SessionDialog*>, SessionDialog*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void, int>::call_it (rep=0x55555c626780, a_1=@0x7fffffffc0cc: -3) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:137
#28 0x00007ffff05ae5f5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgtkmm-2.4.so.1
#29 0x00007ffff3169945 in g_closure_invoke () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#30 0x00007ffff317b01b in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#31 0x00007ffff3184c30 in g_signal_emit_valist () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#32 0x00007ffff3185082 in g_signal_emit () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#33 0x00007ffff23a980c in gtk_dialog_response () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#34 0x00005555566d3716 in SessionDialog::open_button_pressed (this=0x55556019d290, ev=0x55555bb18350) at ../gtk2_ardour/session_dialog.cc:540
#35 0x00005555566dddc4 in sigc::bound_mem_functor1<bool, SessionDialog, _GdkEventButton*>::operator() (this=0x55555ff10938, _A_a1=@0x7fffffffc5e8: 0x55555bb18350) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1856
#36 0x00005555566dc495 in sigc::adaptor_functor<sigc::bound_mem_functor1<bool, SessionDialog, _GdkEventButton*> >::operator()<_GdkEventButton* const&> (this=0x55555ff10930, _A_arg1=@0x7fffffffc5e8: 0x55555bb18350) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:89
#37 0x00005555566db15c in sigc::internal::slot_call1<sigc::bound_mem_functor1<bool, SessionDialog, _GdkEventButton*>, bool, _GdkEventButton*>::call_it (rep=0x55555ff10900, a_1=@0x7fffffffc5e8: 0x55555bb18350) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:137
#38 0x00007ffff0633a9b in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgtkmm-2.4.so.1
#39 0x00007ffff244dcac in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#40 0x00007ffff3169945 in g_closure_invoke () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#41 0x00007ffff317abf2 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#42 0x00007ffff318469b in g_signal_emit_valist () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#43 0x00007ffff3185082 in g_signal_emit () from /opt/Ardour-6.8.209-dbg/lib/libgobject-2.0.so.0
#44 0x00007ffff25d264c in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#45 0x00007ffff244c29d in gtk_propagate_event () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#46 0x00007ffff244c723 in gtk_main_do_event () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#47 0x00007ffff2068b4c in ?? () from /opt/Ardour-6.8.209-dbg/lib/libgdk-x11-2.0.so.0
#48 0x00007ffff2e5ab67 in g_main_context_dispatch () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#49 0x00007ffff2e5add0 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#50 0x00007ffff2e5b0f2 in g_main_loop_run () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#51 0x00007ffff244b3e7 in gtk_main () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#52 0x00007ffff447811c in Gtkmm2ext::UI::run (this=0x555557ae2700, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:310
#53 0x00005555562051a1 in main (argc=1, argv=0x7fffffffd118) at ../gtk2_ardour/main.cc:422
gdb-ardour-03.txt (60,983 bytes)

al f

2021-07-26 11:26

reporter   ~0026080

I also got crashes on SCROLL-TO-ZOOM in the navigator panel at the bottom of the screen.

I reproduced the crash by splitting a region in track 2, moving the left part of the split region to track 1 (drag and drop) and then using the scroll wheel (UP) to zoom in for editing.

Attached here is the gdb output for that.

gdb-ardour-06-scroll-to-zoom.txt (58,039 bytes)
Starting program: /opt/Ardour-6.8.209-dbg/bin/ardour-6.8.209 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe824f700 (LWP 7560)]
[New Thread 0x7fffe7a4e700 (LWP 7561)]
[New Thread 0x7fffe724d700 (LWP 7562)]
[New Thread 0x7fffe6a4c700 (LWP 7563)]
[New Thread 0x7fffd7de5700 (LWP 7564)]
[Thread 0x7fffd7de5700 (LWP 7564) exited]
[New Thread 0x7fffd7de5700 (LWP 7565)]
[New Thread 0x7fffd5601700 (LWP 7566)]
[New Thread 0x7fffcb97d700 (LWP 7567)]
[New Thread 0x7fffcaeca700 (LWP 7568)]
[New Thread 0x7fffcae49700 (LWP 7569)]
[New Thread 0x7fffca648700 (LWP 7570)]
[New Thread 0x7fffca453700 (LWP 7571)]
[Thread 0x7fffca453700 (LWP 7571) exited]
[Thread 0x7fffca648700 (LWP 7570) exited]
[New Thread 0x7fffca648700 (LWP 7572)]
[New Thread 0x7fffca453700 (LWP 7573)]
[Thread 0x7fffca453700 (LWP 7573) exited]
[Thread 0x7fffca648700 (LWP 7572) exited]
[New Thread 0x7fffca3d2700 (LWP 7574)]
[New Thread 0x7fffc9bd1700 (LWP 7575)]
[New Thread 0x7fffc93d0700 (LWP 7576)]
[Thread 0x7fffcae49700 (LWP 7569) exited]
[Thread 0x7fffcaeca700 (LWP 7568) exited]
[Thread 0x7fffc9bd1700 (LWP 7575) exited]
[Thread 0x7fffcb97d700 (LWP 7567) exited]
[New Thread 0x7fffca648700 (LWP 7578)]
[New Thread 0x7fffca453700 (LWP 7579)]
[New Thread 0x7fffc8781700 (LWP 7580)]
[New Thread 0x7fffc9bd1700 (LWP 7581)]
[Detaching after vfork from child process 7582]
[Thread 0x7fffc9bd1700 (LWP 7581) exited]
[New Thread 0x7fffc9bd1700 (LWP 7583)]
[Thread 0x7fffc9bd1700 (LWP 7583) exited]
[Detaching after vfork from child process 7584]
[New Thread 0x7fffc9bd1700 (LWP 7585)]
[Thread 0x7fffc9bd1700 (LWP 7585) exited]
[New Thread 0x7fffc9bd1700 (LWP 7586)]
[New Thread 0x7fffd400e900 (LWP 7587)]
[New Thread 0x7fffc803d900 (LWP 7588)]
[New Thread 0x7fffc8031900 (LWP 7589)]
[New Thread 0x7fffc8025900 (LWP 7590)]
[New Thread 0x7fffc8019900 (LWP 7591)]
[New Thread 0x7fffc800d900 (LWP 7592)]
[New Thread 0x7fffaec19900 (LWP 7593)]
[New Thread 0x7fffaec0e700 (LWP 7594)]
[New Thread 0x7fffaeb8d700 (LWP 7595)]
[New Thread 0x7fffaeb0c700 (LWP 7596)]
[New Thread 0x7fffaea8b700 (LWP 7597)]
[New Thread 0x7fffaea0a700 (LWP 7598)]
[New Thread 0x7fffae989700 (LWP 7599)]
[New Thread 0x7fffae908700 (LWP 7600)]
[New Thread 0x7fffae887700 (LWP 7601)]
[New Thread 0x7fffcae49700 (LWP 7602)]
[Thread 0x7fffc93d0700 (LWP 7576) exited]
[New Thread 0x7fffc93d0700 (LWP 7603)]
[New Thread 0x7fffa19a0700 (LWP 7604)]
[New Thread 0x7fffa119f700 (LWP 7605)]
[New Thread 0x7fff5bfff700 (LWP 7606)]
[New Thread 0x7fff5b7fe700 (LWP 7607)]
[New Thread 0x7fff5affd700 (LWP 7608)]
[New Thread 0x7fff5a7fc700 (LWP 7609)]
[New Thread 0x7fff59ffb700 (LWP 7610)]
[New Thread 0x7fff597fa700 (LWP 7611)]
[New Thread 0x7fff58ff9700 (LWP 7612)]
[Thread 0x7fffc9bd1700 (LWP 7586) exited]

Thread 1 "ArdourGUI" received signal SIGSEGV, Segmentation fault.
0x0000555555e52fe8 in ArdourCanvas::Item::position (this=0x4052c80000000000) at ../libs/canvas/canvas/item.h:140
140	../libs/canvas/canvas/item.h: No such file or directory.

Thread 51 (Thread 0x7fff58ff9700 (LWP 7612)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x5555601434d8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555601434d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555601434a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 50 (Thread 0x7fff597fa700 (LWP 7611)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x55556013a248) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x55556013a240) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x55556013a210) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 49 (Thread 0x7fff59ffb700 (LWP 7610)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x5555601431a8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555601431a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555560143170) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 48 (Thread 0x7fff5a7fc700 (LWP 7609)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555565472b48) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555565472b40) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555565472b10) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 47 (Thread 0x7fff5affd700 (LWP 7608)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x55556013a088) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x55556013a080) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x55556013a050) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 46 (Thread 0x7fff5b7fe700 (LWP 7607)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555565eabf08) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555565eabf00) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555565eabed0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 45 (Thread 0x7fff5bfff700 (LWP 7606)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3967f in ArdourWaveView::WaveViewThreads::_dequeue_draw_request (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:323
#3  0x00007ffff7b39603 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:312
#4  0x00007ffff7b39a85 in ArdourWaveView::WaveViewThreads::_thread_proc (this=0x55556016cfb0) at ../libs/waveview/wave_view_private.cc:501
#5  0x00007ffff7b39a2c in ArdourWaveView::WaveViewThreads::thread_proc () at ../libs/waveview/wave_view_private.cc:415
#6  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555565c60ed8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555565c60ed0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555565c60ea0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 44 (Thread 0x7fffa119f700 (LWP 7605)):
#0  0x00007fffecb623bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fffa119ebb0, rem=0x7fffa119ebc0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007fffecb68047 in __GI___nanosleep (requested_time=<optimized out>, remaining=<optimized out>) at nanosleep.c:27
#2  0x00007ffff2e8ba38 in g_usleep () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff6a3cfa9 in ARDOUR::AutomationWatch::thread (this=0x55555730c470) at ../libs/ardour/automation_watch.cc:195
#4  0x00007ffff6a4277d in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0x55555c76f8e0, p=0x55555730c470) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6a423c2 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0x55555c76f8f0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#6  0x00007ffff6a41ae3 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0x55555c76f8e0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#7  0x00007ffff6a41a64 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator() (this=0x55555c76f8e0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00007ffff6a412c2 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::call_it (rep=0x55555c76f8b0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#11 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 43 (Thread 0x7fffa19a0700 (LWP 7604)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555584edfe8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555584edf98, cond=0x5555584edfc0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555584edfc0, mutex=0x5555584edf98) at pthread_cond_wait.c:638
#3  0x00007ffff70a1837 in ARDOUR::Session::auto_connect_thread_run (this=0x5555584ec010) at ../libs/ardour/session.cc:7207
#4  0x00007ffff70a135e in ARDOUR::Session::auto_connect_thread (arg=0x5555584ec010) at ../libs/ardour/session.cc:7138
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 42 (Thread 0x7fffc93d0700 (LWP 7603)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555584edf7c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555584edf28, cond=0x5555584edf50) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555584edf50, mutex=0x5555584edf28) at pthread_cond_wait.c:638
#3  0x00007ffff711cc07 in ARDOUR::Session::emit_thread_run (this=0x5555584ec010) at ../libs/ardour/session_process.cc:1137
#4  0x00007ffff711cba4 in ARDOUR::Session::emit_thread (arg=0x5555584ec010) at ../libs/ardour/session_process.cc:1126
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 41 (Thread 0x7fffcae49700 (LWP 7602)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x7fff5c17a830, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2e5ad66 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2e5b0f2 in g_main_loop_run () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff4094db4 in BaseUI::main_thread (this=0x555558a51010) at ../libs/pbd/base_ui.cc:101
#4  0x00007ffff4098f46 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x555559c9eaa8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff4098b86 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x555559c9eaa0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00007ffff40985c7 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x555559c9ea70) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 40 (Thread 0x7fffae887700 (LWP 7601)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x7fffae886318, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff40aacee in CrossThreadChannel::poll_for_request (this=0x555558243738) at ../libs/pbd/crossthread.posix.cc:102
#2  0x00007ffff40aad57 in CrossThreadChannel::receive (this=0x555558243738, msg=@0x7fffae8863ef: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:123
#3  0x00007ffff6a52abe in ARDOUR::Butler::thread_work (this=0x5555582436a0) at ../libs/ardour/butler.cc:185
#4  0x00007ffff6a5283f in ARDOUR::Butler::_thread_work (arg=0x5555582436a0) at ../libs/ardour/butler.cc:166
#5  0x00007ffff40ce0c4 in fake_thread_start (arg=0x555559c9e100) at ../libs/pbd/pthread_utils.cc:100
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 39 (Thread 0x7fffae908700 (LWP 7600)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffae907cf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffae907d08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffae907cf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffae907cf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555584de550) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 38 (Thread 0x7fffae989700 (LWP 7599)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffae988cf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffae988d08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffae988cf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffae988cf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555584de3a0) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 37 (Thread 0x7fffaea0a700 (LWP 7598)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffaea09cf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffaea09d08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffaea09cf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffaea09cf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555558769870) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 36 (Thread 0x7fffaea8b700 (LWP 7597)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffaea8acf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffaea8ad08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffaea8acf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffaea8acf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555558a18a40) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 35 (Thread 0x7fffaeb0c700 (LWP 7596)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffaeb0bcf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffaeb0bd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffaeb0bcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffaeb0bcf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555584e6ca0) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 34 (Thread 0x7fffaeb8d700 (LWP 7595)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf18) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf18, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf18) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b83bc6 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6b8407e in ARDOUR::Graph::helper_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffaeb8ccf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffaeb8cd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffaeb8ccf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffaeb8ccf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555558aa5f40) at ../libs/backends/jack/jack_audiobackend.cc:953
#12 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 33 (Thread 0x7fffaec0e700 (LWP 7594)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555cd5cf40) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x55555cd5cf40, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x55555cd5cf40, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x55555cd5cf40) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6b82f54 in ARDOUR::Graph::reached_terminal_node (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:301
#5  0x00007ffff6b8b15b in ARDOUR::GraphNode::finish (this=0x55555f928430, chain=0) at ../libs/ardour/graphnode.cc:74
#6  0x00007ffff6b864f6 in ARDOUR::GraphNode::run (this=0x55555f928430, chain=0) at ../libs/ardour/ardour/graphnode.h:65
#7  0x00007ffff6b83d34 in ARDOUR::Graph::run_one (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:442
#8  0x00007ffff6b84460 in ARDOUR::Graph::main_thread (this=0x55555cd5cd80) at ../libs/ardour/graph.cc:523
#9  0x00007ffff6b8aa81 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffaec0dcf8, p=0x55555cd5cd80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#10 0x00007ffff6b8a236 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffaec0dd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#11 0x00007ffff6b89693 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffaec0dcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#12 0x00007ffff6b88f37 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#13 0x0000555555c110e2 in boost::function0<void>::operator() (this=0x7fffaec0dcf0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#14 0x00007fffcbbaa7e1 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555587679a0) at ../libs/backends/jack/jack_audiobackend.cc:953
#15 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#16 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 32 (Thread 0x7fffaec19900 (LWP 7593)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7fffc800d900 (LWP 7592)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7fffc8019900 (LWP 7591)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7fffc8025900 (LWP 7590)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7fffc8031900 (LWP 7589)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7fffc803d900 (LWP 7588)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7fffd400e900 (LWP 7587)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x7fffbc003850) at ../sysdeps/nptl/futex-internal.h:320
#1  do_futex_wait (sem=sem@entry=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:112
#2  0x00007fffeef854e8 in __new_sem_wait_slow (sem=0x7fffbc003850, abstime=0x0, clockid=0) at sem_waitcommon.c:184
#3  0x00007ffff6b8648c in PBD::Semaphore::wait (this=0x7fffbc003850) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70630a1 in ARDOUR::RTTaskList::run (this=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff7062e90 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffbc003820) at ../libs/ardour/rt_tasklist.cc:68
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fffc8781700 (LWP 7580)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fffd40ee5bc in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fffd40ee6c5 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffd40d4b79 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd40d3463 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffcbbcef06 in WJACK_cycle_wait (client=0x555557686800) at ../libs/backends/jack/weak_libjack.def:95
#6  0x00007fffcbbaa8a8 in ARDOUR::JACKAudioBackend::process_thread (this=0x555557be3040) at ../libs/backends/jack/jack_audiobackend.cc:982
#7  0x00007fffcbbaa830 in ARDOUR::JACKAudioBackend::_process_thread (arg=0x555557be3040) at ../libs/backends/jack/jack_audiobackend.cc:961
#8  0x00007fffd40d33c7 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#9  0x00007fffd40ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fffca453700 (LWP 7579)):
#0  __libc_read (nbytes=4, buf=0x7fffca452b80, fd=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __libc_read (fd=16, buf=0x7fffca452b80, nbytes=4) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fffd40edb12 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#3  0x00007fffd40f29ed in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd40ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fffca648700 (LWP 7578)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555578b1e28) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5555578b1dd0, cond=0x5555578b1e00) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5555578b1e00, mutex=0x5555578b1dd0) at pthread_cond_wait.c:638
#3  0x00007fffd40ed382 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#4  0x00007fffd40e4dfd in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fffd40ec870 in ?? () from /lib/x86_64-linux-gnu/libjack.so.0
#6  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fffca3d2700 (LWP 7574)):
#0  0x00007fffecb97aff in __GI___poll (fds=0x5555576c6730, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2e5ad66 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2e5ae7c in g_main_context_iteration () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff2e5aec1 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#5  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffd5601700 (LWP 7566)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69dca8a in ARDOUR::AudioEngine::do_devicelist_update (this=0x555557aab7b0) at ../libs/ardour/audioengine.cc:720
#3  0x00007ffff69eaf45 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5555579dc870, p=0x555557aab7b0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff69ea8ec in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x5555579dc880, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff69e9f59 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x5555579dc870) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff69e95ec in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x5555579dc870) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff69e8668 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x5555579dc840) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffd7de5700 (LWP 7565)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69dc84b in ARDOUR::AudioEngine::do_reset_backend (this=0x555557aab7b0) at ../libs/ardour/audioengine.cc:684
#3  0x00007ffff69eaf45 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5555579dcc10, p=0x555557aab7b0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff69ea8ec in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x5555579dcc20, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff69e9f59 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x5555579dcc10) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff69e95ec in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x5555579dcc10) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff69e8668 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x5555579dcbe0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffe6a4c700 (LWP 7563)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff69901cc in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:93
#3  0x00007ffff698ffb8 in analyser_work () at ../libs/ardour/analyser.cc:58
#4  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555557381738) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555557381730) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555557381700) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fffe724d700 (LWP 7562)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71b3134 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x55555739f5a8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x55555739f5a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x55555739f570) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fffe7a4e700 (LWP 7561)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2eabe4c in g_cond_wait () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71b3134 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x00005555564f3321 in sigc::pointer_functor0<void>::operator() (this=0x555557381868) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555564f0454 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555557381860) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555564ec2dd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555557381830) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff33f4c4d in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2e8a1e5 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fffe824f700 (LWP 7560)):
#0  0x00007fffecb623bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7fffe824ebf0, rem=0x7fffe824ec00) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007fffecb68047 in __GI___nanosleep (requested_time=<optimized out>, remaining=<optimized out>) at nanosleep.c:27
#2  0x00007ffff2e8ba38 in g_usleep () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#3  0x00005555568e303c in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:468
#4  0x00007fffeef7b609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#5  0x00007fffecba4293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fffe8e2c900 (LWP 7556)):
#0  0x0000555555e52fe8 in ArdourCanvas::Item::position (this=0x4052c80000000000) at ../libs/canvas/canvas/item.h:140
#1  0x00007ffff4ba64e1 in ArdourCanvas::Item::position_offset (this=0x55556046a720) at ../libs/canvas/item.cc:164
#2  0x00007ffff4ba65b6 in ArdourCanvas::Item::item_to_canvas (this=0x55556046a720, d=...) at ../libs/canvas/item.cc:180
#3  0x00007ffff4ba6339 in ArdourCanvas::Item::canvas_origin (this=0x55556046a720) at ../libs/canvas/item.cc:125
#4  0x0000555556209b60 in ArdourMarker::setup_line (this=0x55556036f000) at ../gtk2_ardour/marker.cc:407
#5  0x000055555620a520 in ArdourMarker::set_position (this=0x55556036f000, sample=279427) at ../gtk2_ardour/marker.cc:537
#6  0x000055555620a558 in ArdourMarker::reposition (this=0x55556036f000) at ../gtk2_ardour/marker.cc:544
#7  0x000055555620db52 in sigc::bound_mem_functor0<void, ArdourMarker>::operator() (this=0x55556046f3e8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#8  0x000055555620d484 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourMarker> >::operator() (this=0x55556046f3e0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#9  0x000055555620c9df in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourMarker>, void>::call_it (rep=0x55556046f3b0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#10 0x0000555555c2b3fe in sigc::internal::signal_emit0<void, sigc::nil>::emit (impl=0x55555bd1d430) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:772
#11 0x0000555555c35de6 in sigc::signal0<void, sigc::nil>::emit (this=0x5555582269f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:2679
#12 0x0000555555c2f444 in sigc::signal0<void, sigc::nil>::operator() (this=0x5555582269f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/signal.h:2687
#13 0x0000555555dc7725 in Editor::on_samples_per_pixel_changed (this=0x555558226710) at ../gtk2_ardour/editor.cc:4637
#14 0x0000555555dc7a6e in Editor::visual_changer (this=0x555558226710, vc=...) at ../gtk2_ardour/editor.cc:4761
#15 0x0000555555dc797e in Editor::idle_visual_changer (this=0x555558226710) at ../gtk2_ardour/editor.cc:4726
#16 0x0000555555dc7896 in Editor::_idle_visual_changer (arg=0x555558226710) at ../gtk2_ardour/editor.cc:4684
#17 0x00007ffff2e5aa2a in g_main_context_dispatch () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#18 0x00007ffff2e5add0 in ?? () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#19 0x00007ffff2e5b0f2 in g_main_loop_run () from /opt/Ardour-6.8.209-dbg/lib/libglib-2.0.so.0
#20 0x00007ffff244b3e7 in gtk_main () from /opt/Ardour-6.8.209-dbg/lib/libgtk-x11-2.0.so.0
#21 0x00007ffff447811c in Gtkmm2ext::UI::run (this=0x555557ae26f0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:310
#22 0x00005555562051a1 in main (argc=1, argv=0x7fffffffd158) at ../gtk2_ardour/main.cc:422

paul

2021-07-26 13:51

administrator   ~0026082

You had already used some region cue markers?

al f

2021-07-26 14:47

reporter   ~0026083

Yes, I've used a few - less than five I think (I am away from session right now, so can't check exact number [is there a way to do that?])

aricjoshua

2021-07-28 04:57

reporter   ~0026084

So, I used the debug version to try things out. Ardour crashes when it tries to establish a new session after closing a few others.
https://cookieclicker2.io

Issue History

Date Modified Username Field Change
2021-06-21 10:09 al f New Issue
2021-06-21 10:09 al f Tag Attached: 6.7
2021-06-21 10:09 al f Tag Attached: Editor
2021-06-21 10:09 al f Tag Attached: Import
2021-06-24 16:49 Hans Flikkema Note Added: 0026004
2021-07-20 12:54 al f Note Added: 0026066
2021-07-20 12:54 al f Tag Attached: 6.8
2021-07-20 12:57 al f Note Added: 0026067
2021-07-21 06:10 al f Note Added: 0026068
2021-07-21 11:33 al f Note Added: 0026069
2021-07-21 15:38 al f Note Added: 0026071
2021-07-21 21:01 al f Note Added: 0026072
2021-07-22 20:34 al f File Added: ardour-gdb.log
2021-07-22 20:34 al f Note Added: 0026073
2021-07-22 21:42 paul Note Added: 0026074
2021-07-22 21:55 al f Note Added: 0026075
2021-07-22 22:12 paul Note Added: 0026076
2021-07-22 22:45 al f File Added: gdb-ardour-03.txt
2021-07-22 22:45 al f Note Added: 0026077
2021-07-26 11:26 al f File Added: gdb-ardour-06-scroll-to-zoom.txt
2021-07-26 11:26 al f Note Added: 0026080
2021-07-26 13:51 paul Note Added: 0026082
2021-07-26 14:47 al f Note Added: 0026083
2021-07-28 04:57 aricjoshua Note Added: 0026084