[Bug 110669] New: iMac with GK107M unstable - hangs with xorg / crashes with xwayland

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=110669

            Bug ID: 110669
           Summary: iMac with GK107M unstable - hangs with xorg / crashes
                    with xwayland
           Product: Mesa
           Version: 19.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: sjon-bheiZbv1XdVtjaSKtHux1w@public.gmane.org
        QA Contact: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org

I'd like to start with noting this issue has been occurring for years on most
of our iMacs and I strongly suspect this isn't necessarily "caused" by nouveau
but rather by an implementation detail NVidia forgot to document (please remind
me why I keep buying their hardware?)

Hardware: Apple Inc. iMac13,2/Mac-FC02E91DDD3FA6A4, BIOS
IM131.88Z.010A.B05.1211151146 11/15/2012
Software: Archlinux / any nouveau release, currenty running xf86-video-nouveau
1.0.16-1

Using Xorg this iMac hangs maybe 2 or 3 times a day, using Xwayland (using
sway, a native wayland implementation) there actually is a backtrace and I have
a chance to reboot instead of kill the power. I'd love to help debug this since
I assume it only happens when using this specific hardware. To start with -
here is a backtrace:

Stack trace of thread 765:
#0  0x00007f9374fe282f raise (libc.so.6)
#1  0x00007f9374fcd672 abort (libc.so.6)
#2  0x000055ef04386f6a n/a (Xwayland)
#3  0x000055ef0437f645 n/a (Xwayland)
#4  0x000055ef0438a7a6 n/a (Xwayland)
#5  0x00007f9374fe28b0 __restore_rt (libc.so.6)
#6  0x00007f9374fe282f raise (libc.so.6)
#7  0x00007f9374fcd672 abort (libc.so.6)
#8  0x00007f9375024e78 __libc_message (libc.so.6)
#9  0x00007f937502b78a malloc_printerr (libc.so.6)
#10 0x00007f937502d007 _int_free (libc.so.6)
#11 0x00007f936e02b7da nouveau_bo_ref (libdrm_nouveau.so.2)
#12 0x00007f9372866894 n/a (nouveau_dri.so)
#13 0x00007f9372a14c87 n/a (nouveau_dri.so)
#14 0x00007f93729d6604 n/a (nouveau_dri.so)
#15 0x00007f93729d9031 n/a (nouveau_dri.so)
#16 0x00007f93729dc5c8 n/a (nouveau_dri.so)
#17 0x000055ef0448d8d4 n/a (Xwayland)
#18 0x000055ef0449963d n/a (Xwayland)
#19 0x000055ef04404ec1 n/a (Xwayland)
#20 0x000055ef043e53c8 n/a (Xwayland)
#21 0x000055ef043e5933 n/a (Xwayland)
#22 0x000055ef04451270 n/a (Xwayland)
#23 0x000055ef0434b11d n/a (Xwayland)
#24 0x00007f9374fcece3 __libc_start_main (libc.so.6)
#25 0x000055ef0434c14e n/a (Xwayland)

Stack trace of thread 769:
#0  0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1  0x00007f9372687474 n/a (nouveau_dri.so)
#2  0x00007f93726872c8 n/a (nouveau_dri.so)
#3  0x00007f93746eca92 start_thread (libpthread.so.0)
#4  0x00007f93750a5cd3 __clone (libc.so.6)

Stack trace of thread 771:
#0  0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1  0x00007f9372687474 n/a (nouveau_dri.so)
#2  0x00007f93726872c8 n/a (nouveau_dri.so)
#3  0x00007f93746eca92 start_thread (libpthread.so.0)
#4  0x00007f93750a5cd3 __clone (libc.so.6)

Stack trace of thread 772:
#0  0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1  0x00007f9372687474 n/a (nouveau_dri.so)
#2  0x00007f93726872c8 n/a (nouveau_dri.so)
#3  0x00007f93746eca92 start_thread (libpthread.so.0)
#4  0x00007f93750a5cd3 __clone (libc.so.6)

Stack trace of thread 768:
#0  0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1  0x00007f9372cc81e4 n/a (nouveau_dri.so)
#2  0x00007f9372cc7f08 n/a (nouveau_dri.so)
#3  0x00007f93746eca92 start_thread (libpthread.so.0)
#4  0x00007f93750a5cd3 __clone (libc.so.6)

Stack trace of thread 770:
#0  0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
#1  0x00007f9372687474 n/a (nouveau_dri.so)
#2  0x00007f93726872c8 n/a (nouveau_dri.so)
#3  0x00007f93746eca92 start_thread (libpthread.so.0)
#4  0x00007f93750a5cd3 __clone (libc.so.6)

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