[Bug 110228] [cfl] GPU hang when running UE4Editor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110228

--- Comment #6 from Andrzej Broński <koxu1996+bugs.freedesktop.org at gmail.com> ---
(In reply to Tapani Pälli from comment #5)
> (In reply to Andrzej Broński from comment #4)
> > Created attachment 143780 [details]
> > vulkaninfo output
> > 
> > Issue can be related to Vulkan, so I provide output of 'vulkaninfo' - it
> > segfaults btw.
> > My version: vulkan-intel 19.0.0-1.
> 
> Huh, can you provide the backtrace for vulkaninfo segfault?


Sure. I built mesa with debugging symbols, then run vulkaninfo with gdb:
~~~
...
Thread 1 "vulkaninfo" received signal SIGSEGV, Segmentation fault.
0x00007ffff7f650ce in xcb_send_request_with_fds64 () from /usr/lib/libxcb.so.1
(gdb) bt
#0  0x00007ffff7f650ce in xcb_send_request_with_fds64 () from
/usr/lib/libxcb.so.1
#1  0x00007ffff7f6566a in xcb_send_request () from /usr/lib/libxcb.so.1
#2  0x00007ffff7f74405 in xcb_query_extension () from /usr/lib/libxcb.so.1
#3  0x00007ffff54d2c3d in wsi_x11_connection_create (conn=0x48000401b9358b48,
wsi_dev=0x5555555b8d80) at ../mesa-19.0.0/src/vulkan/wsi/wsi_common_x11.c:135
#4  wsi_x11_get_connection (wsi_dev=wsi_dev at entry=0x5555555b8d80,
conn=conn at entry=0x48000401b9358b48) at
../mesa-19.0.0/src/vulkan/wsi/wsi_common_x11.c:242
#5  0x00007ffff54d341a in x11_surface_get_support (icd_surface=<optimized out>,
wsi_device=0x5555555b8d80, queueFamilyIndex=<optimized out>,
pSupported=0x7fffffffd824) at
../mesa-19.0.0/src/vulkan/wsi/wsi_common_x11.c:427
#6  0x0000555555562693 in ?? ()
#7  0x0000555555557f72 in ?? ()
#8  0x00007ffff7c10223 in __libc_start_main () from /usr/lib/libc.so.6
#9  0x00005555555587be in ?? ()
~~~

You can grab core file here
https://drive.google.com/open?id=1c7lX82Y2xCkVFVv84SnaqD0X3lCRphAJ however it
seems to be the problem with XCB library.

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