On Thu, Oct 20, 2016 at 3:27 PM, Dan Kegel <[email protected]> wrote: > Hi folks, > a few piglit tests seem to leave a little noise in dmesg when run on > nvidia proprietary drivers. > Is this expected? > > 1) > > dmesg output: > texsubimage[27980]: segfault at 20e0d20 ip 00007fc0492ce5d5 sp > 00007ffc97347800 error 4 in > libnvidia-glcore.so.370.28[7fc0481ad000+13bd000] > > reproducers: > piglit/bin/texsubimage array pbo -auto -fbo > piglit/bin/texsubimage array -auto -fbo > > 2) > > dmesg output: > ext_texture_for[28147]: segfault at 0 ip 00007f35dc1ca385 sp > 00007ffd0b13dda8 error 4 in libc-2.23.so[7f35dc07d000+1c0000] > > reproducer: > piglit/bin/ext_texture_format_bgra8888-api-errors -auto -fbo > > 3) > > dmesg output: > glslparsertest[28167]: segfault at 8 ip 00007fad84a0bb1e sp > 00007ffe20214850 error 4 in > libnvidia-glcore.so.370.28[7fad8463b000+13bd000] > > reproducers: > piglit/bin/glslparsertest > piglit/tests/spec/glsl-1.10/compiler/void/void-equal.vert fail 1.10 > piglit/bin/glslparsertest > piglit/tests/spec/glsl-1.10/compiler/void/void-lt.vert fail 1.10 > > 4) > > dmesg output: traps: glslparsertest[28205] trap divide error > ip:7f871d7db4a3 sp:7ffc1b0064e8 error:0 in > libnvidia-glcore.so.370.28[7f871d4ba000+13bd000] > > reproducers: > piglit/bin/glslparsertest > piglit/tests/spec/glsl-1.10/preprocessor/divide-by-zero.vert fail 1.10 > piglit/bin/glslparsertest > piglit/tests/spec/glsl-1.10/preprocessor/modulus-by-zero.vert fail > 1.10
It's expected that the Linux Kernel makes a note in dmesg when it kills a process as a result of a signal (like SIGSEGV or SIGILL or whatever). In all but case 2, the IP causing the fault is inside the NVIDIA proprietary driver. I suspect that the piglit test for case 2 isn't sufficiently resilient to drivers doing odd things, but who knows. (Or it could be the NVIDIA blob calling into libc with bs.) Not sure if that answers your question... -ilia _______________________________________________ Piglit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/piglit
