This part looks suspicious:
#37 0x00007fabd14d636e in _cogl_pipeline_free (pipeline=0x0) at
../cogl/cogl/cogl-pipeline.c:386
__func__ = <optimized out>
#38 _cogl_object_pipeline_indirect_free (obj=0x0) at
../cogl/cogl/cogl-pipeline.c:69
No locals.
#39 0x00007fabd1af1983 in meta_shaped_texture_reset_pipelines
(stex=0x55d9891fab50) at ../src/compositor/meta-shaped-texture.c:244
_pp = 0x55d9891fab98
_ptr = <optimized out>
#40 meta_shaped_texture_dispose (object=0x55d9891fab50) at
../src/compositor/meta-shaped-texture.c:261
stex = 0x55d9891fab50
And the same in bug 1944054.
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https://bugs.launchpad.net/bugs/1943406
Title:
[amdgpu] [radeon] gnome-shell crashed with SIGSEGV in
release_expired_buffers_locked() from pb_cache_add_buffer() from
pb_destroy() from pb_reference_with_winsys() from
radeon_bo_reference()
Status in Mutter:
Unknown
Status in gnome-shell package in Ubuntu:
Confirmed
Bug description:
The Ubuntu Error Tracker has been receiving reports about a problem regarding
gnome-shell. This problem was most recently seen with package version
40.2-1ubuntu6, the problem page at
https://errors.ubuntu.com/problem/17edbc90dd7001a4a55edc878d9b3719dd3a4815
contains more details, including versions of packages affected, stacktrace or
traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software
developer, you can request it at http://forms.canonical.com/reports/.
To manage notifications about this bug go to:
https://bugs.launchpad.net/mutter/+bug/1943406/+subscriptions
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