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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #7 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Andrzej Broński from comment #6)
> (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.

Thanks, that is weird. FYI there is another trace which refers to xcb failure
in bug #110261.

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