[Bug 96396] Segfault in Xorg after RADEON(0): Failed to make 28944x66x32bpp GBM bo

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96396

--- Comment #15 from Theo <alpha0x89 at yahoo.de> ---
Created attachment 139820
  --> https://bugs.freedesktop.org/attachment.cgi?id=139820&action=edit
backtrace from within glamor_make_pixmap_exportable

(In reply to Michel Dänzer from comment #14)
> I don't suppose
> https://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/
> ?id=3dcfce8d0f495d09d7836caf98ef30d625b78a13 helps by any chance?

It doesn't. "Failed to make ... GBM bo" crashes still happen with this patch.

> If not, can you attach gdb to the Xorg process, set a breakpoint in
> glamor_make_pixmap_exportable where it prints the "Failed to make" message,
> then when the breakpoint triggers, run "bt full" and attach its output here?

I followed [1] to set a breakpoint at [2] with these commands:

set confirm off
set breakpoint pending on
file $XSERVER
set args $ARGS
handle SIGUSR1 nostop
handle SIGUSR2 nostop
handle SIGPIPE nostop
break glamor_egl.c:372
run
bt full
cont
bt full
cont
detach
quit

and then waited for the next crash. The resulting backtrace is attached.

[1] https://www.x.org/wiki/Development/Documentation/ServerDebugging/#index2h3
[2]
https://cgit.freedesktop.org/xorg/xserver/tree/glamor/glamor_egl.c?h=server-1.19-branch#n372

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