*** This bug is a duplicate of bug 1876219 ***
https://bugs.launchpad.net/bugs/1876219
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mesa (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1877879
Title:
segfault in iris_dri.so
Status in mesa package in Ubuntu:
Confirmed
Bug description:
As of Ubuntu 20.04, on intel graphics with intel driver (not
modesetting), I got segfault whenever anything tries to use GL.
This happens unless I export MESA_LOADER_DRIVER_OVERRIDE=i965. One
says that it does not happen with modesetting driver.
(gdb) run
Starting program: /usr/bin/glxgears
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff17cf700 (LWP 97070)]
[New Thread 0x7fffebfff700 (LWP 97071)]
[New Thread 0x7ffff0fce700 (LWP 97072)]
[New Thread 0x7fffeb7fe700 (LWP 97073)]
Thread 1 "glxgears" received signal SIGSEGV, Segmentation fault.
0x00007ffff6a7e1d4 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
(gdb) where
#0 0x00007ffff6a7e1d4 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#1 0x00007ffff6c42de4 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#2 0x00007ffff6a59e5d in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#3 0x00007ffff6a5aa95 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007ffff6099774 in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x000055555555711e in ?? ()
#6 0x0000555555556c88 in ?? ()
#7 0x00007ffff7ace0b3 in __libc_start_main (main=0x555555556410, argc=1,
argv=0x7fffffffe698, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffffffe688) at ../csu/libc-start.c:308
#8 0x0000555555556f0a in ?? ()
(gdb)
I believe, this is a bug in mesa tracked here:
https://gitlab.freedesktop.org/mesa/mesa/issues/1358
packages versions:
libgl1-mesa-dri:amd64 20.0.4-2ubuntu1
amd64
xserver-xorg-video-intel 2:2.99.917+git20200226-1
amd64
xserver-xorg-core 2:1.20.8-2ubuntu2
amd64
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