[Mesa-dev] [Bug 79421] New: [llvmpipe] SIGSEGV src/gallium/drivers/llvmpipe/lp_rast_priv.h:218

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79421

          Priority: medium
            Bug ID: 79421
          Keywords: have-backtrace
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [llvmpipe] SIGSEGV
                    src/gallium/drivers/llvmpipe/lp_rast_priv.h:218
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vlee at freedesktop.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Other
           Product: Mesa

mesa: c0bd206a148b8fcda253359efe8c95871f89bd05 (master 10.3.0-devel)

Run piglit test fbo-drawbuffers-none glBlendFunci on llvmpipe.

$ ./bin/fbo-drawbuffers-none glBlendFunci -auto
Testing glBlendFunci.
Segmentation fault (core dumped)

(gdb) bt
#0  0x00007f49681c56a7 in lp_rast_get_unswizzled_color_block_pointer
(task=0x1e27838, buf=0, x=0, y=0, layer=0)
    at src/gallium/drivers/llvmpipe/lp_rast_priv.h:218
#1  0x00007f49681c6328 in lp_rast_shade_tile (task=0x1e27838, arg=...) at
src/gallium/drivers/llvmpipe/lp_rast.c:316
#2  0x00007f49681c6d5b in do_rasterize_bin (task=0x1e27838, bin=0x7f496b95b1e8,
x=0, y=0)
    at src/gallium/drivers/llvmpipe/lp_rast.c:589
#3  0x00007f49681c6dc8 in rasterize_bin (task=0x1e27838, bin=0x7f496b95b1e8,
x=0, y=0)
    at src/gallium/drivers/llvmpipe/lp_rast.c:608
#4  0x00007f49681c6ed8 in rasterize_scene (task=0x1e27838,
scene=0x7f496b95b010)
    at src/gallium/drivers/llvmpipe/lp_rast.c:657
#5  0x00007f49681c71a4 in thread_function (init_data=0x1e27838) at
src/gallium/drivers/llvmpipe/lp_rast.c:778
#6  0x00007f49681c4ce9 in impl_thrd_routine (p=0x1e18c40) at
include/c11/threads_posix.h:87
#7  0x00007f496716c182 in start_thread (arg=0x7f4966b0f700) at
pthread_create.c:312
#8  0x00007f496afb330d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) frame 0
#0  0x00007f49681c56a7 in lp_rast_get_unswizzled_color_block_pointer
(task=0x1e27838, buf=0, x=0, y=0, layer=0)
    at src/gallium/drivers/llvmpipe/lp_rast_priv.h:218
218       format_bytes =
util_format_get_blocksize(task->scene->fb.cbufs[buf]->format);
(gdb) print task->scene->fb.cbufs[buf]
$1 = (struct pipe_surface *) 0x0

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