Using SNA with intel driver 2.17.0, xserver 1.11.2 and GIMP: choose Filters -> Render -> Gfig and try draw an arc: [ 4297.240] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x81a9717] [ 4297.240] 1: /usr/bin/X (0x8047000+0x1660da) [0x81ad0da] [ 4297.240] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xffffe40c] [ 4297.240] 3: /usr/bin/X (miPolyArc+0x1426) [0x81858e6] [ 4297.240] 4: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb7748000+0x3ade6) [0xb7782de6] [ 4297.240] 5: /usr/bin/X (0x8047000+0xf0b8a) [0x8137b8a] [ 4297.240] 6: /usr/bin/X (0x8047000+0x2ba0a) [0x8072a0a] [ 4297.240] 7: /usr/bin/X (0x8047000+0x2f178) [0x8076178] [ 4297.240] 8: /usr/bin/X (0x8047000+0x1e4a5) [0x80654a5] [ 4297.240] 9: /lib/libc.so.6 (__libc_start_main+0xe6) [0x48581c72] [ 4297.240] 10: /usr/bin/X (0x8047000+0x1e091) [0x8065091] [ 4297.240] Segmentation fault at address (nil) After digging a bit I found it can be triggered with x11perf as well: x11perf -wdcircle100 -time 1 -repeat 1 -rop GXxor (related to #25078, but with EXA)
commit 297f7680cfd73ab6eb099adca7aefe00e61c9e85 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Sat Nov 19 16:11:42 2011 +0000 sna: Avoid the NULL damage deref Fixes x11perf -wdcircle100 -time 1 -repeat 1 -rop GXxor Reported-by: Fryderyk Dziarmagowski <fdziarmagowski@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43084 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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