[Bug 110134] SIGSEGV while playing large hevc video in mpv

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110134

--- Comment #7 from Anthony L. Eden <anthony.louis.eden at gmail.com> ---
Happened again (doesn't occur frequently). Backtrace from coredump (gdb):

(gdb) p $_siginfo._sifields._sigfault.si_addr
$1 = (void *) 0x4
(gdb) bt
#0  __memmove_avx_unaligned_erms () at
../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:306
#1  0x00007f386c1f4639 in brw_upload_cs_work_groups_surface
(brw=0x7f38644bcc40) at
../mesa-18.3.4/src/mesa/drivers/dri/i965/brw_wm_surface_state.c:1660
#2  0x00007f386c1ec829 in check_and_emit_atom (atom=0x7f38644d4020,
state=<synthetic pointer>, brw=0x7f38644bcc40) at
../mesa-18.3.4/src/mesa/drivers/dri/i965/brw_state_upload.c:496
#3  brw_upload_pipeline_state (pipeline=BRW_COMPUTE_PIPELINE,
brw=0x7f38644bcc40, brw at entry=0x7f38644d4068) at
../mesa-18.3.4/src/mesa/drivers/dri/i965/brw_state_upload.c:615
#4  brw_upload_compute_state (brw=brw at entry=0x7f38644bcc40) at
../mesa-18.3.4/src/mesa/drivers/dri/i965/brw_state_upload.c:675
#5  0x00007f386c1d33a8 in brw_dispatch_compute_common (ctx=0x7f38644bcc40) at
../mesa-18.3.4/src/mesa/drivers/dri/i965/brw_compute.c:192
#6  0x00007f386c4117ff in dispatch_compute (no_error=false, num_groups_z=1,
num_groups_y=135, num_groups_x=240) at
../mesa-18.3.4/src/mesa/main/compute.c:265
#7  _mesa_DispatchCompute (num_groups_x=240, num_groups_y=135, num_groups_z=1)
at ../mesa-18.3.4/src/mesa/main/compute.c:280
#8  0x000055a08dbdaf42 in gl_renderpass_run (ra=0x7f38644e2cd0,
params=0x7f386dc724c0) at ../video/out/opengl/ra_gl.c:1051
#9  0x000055a08dbc06db in gl_sc_dispatch_compute (sc=0x7f38646780a0,
w=w at entry=240, h=h at entry=135, d=d at entry=1) at
../video/out/gpu/shader_cache.c:1021
#10 0x000055a08dbc727c in dispatch_compute (p=p at entry=0x7f3864678e30,
w=w at entry=1916, h=h at entry=1077, info=...) at ../video/out/gpu/video.c:1165
#11 0x000055a08dbc7379 in finish_pass_tex (p=p at entry=0x7f3864678e30,
dst_tex=dst_tex at entry=0x7f3864679288, w=1916, h=1077) at
../video/out/gpu/video.c:1264
#12 0x000055a08dbc9ce7 in pass_draw_to_screen (p=p at entry=0x7f3864678e30,
fbo=...) at ../video/out/gpu/video.c:2815
#13 0x000055a08dbccc64 in gl_video_render_frame (p=0x7f3864678e30,
frame=frame at entry=0x7f3865434650, fbo=..., flags=flags at entry=3) at
../video/out/gpu/video.c:3124
#14 0x000055a08dbe0f5c in draw_frame (vo=0x55a08e1d0090, frame=0x7f3865434650)
at ../video/out/vo_gpu.c:87
#15 0x000055a08dbdeb27 in vo_render_frame_external (vo=vo at entry=0x55a08e1d0090)
at ../video/out/vo.c:898
#16 0x000055a08dbdf5f7 in vo_thread (ptr=0x55a08e1d0090) at
../video/out/vo.c:1055
#17 0x00007f3886113a9d in start_thread (arg=<optimized out>) at
pthread_create.c:486
#18 0x00007f38826baaf3 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

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