[Bug 79218] New: [regression] "i965: Print disassembly after compaction." SIGSEGV

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79218

          Priority: medium
            Bug ID: 79218
          Assignee: idr at freedesktop.org
           Summary: [regression] "i965: Print disassembly after
                    compaction." SIGSEGV
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: andreas.reis at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/DRI/i965
           Product: Mesa

"i965: Print disassembly after compaction." (bisected) introduces a SIGSEGV
when trying to playback videos with mpv:

Program received signal SIGSEGV, Segmentation fault.
0x00007fffd3c73c40 in annotation_finalize(annotation_info*, unsigned int) ()
from /usr/lib/xorg/modules/dri/i965_dri.so
(gdb) bt
#0  0x00007fffd3c73c40 in annotation_finalize(annotation_info*, unsigned int)
() from /usr/lib/xorg/modules/dri/i965_dri.so
#1  0x00007fffd3c499e7 in fs_generator::generate_code(exec_list*,
annotation_info*) () from /usr/lib/xorg/modules/dri/i965_dri.so
#2  0x00007fffd3c4af2e in fs_generator::generate_assembly(exec_list*,
exec_list*, unsigned int*) () from /usr/lib/xorg/modules/dri/i965_dri.so
#3  0x00007fffd3c3bfd1 in brw_wm_fs_emit () from
/usr/lib/xorg/modules/dri/i965_dri.so
#4  0x00007fffd3caf0dd in do_wm_prog () from
/usr/lib/xorg/modules/dri/i965_dri.so
#5  0x00007fffd3c3bc2f in brw_fs_precompile(gl_context*, gl_shader_program*) ()
from /usr/lib/xorg/modules/dri/i965_dri.so
#6  0x00007fffd3c73263 in brw_link_shader () from
/usr/lib/xorg/modules/dri/i965_dri.so
#7  0x00007fffd3b0b00e in _mesa_glsl_link_shader () from
/usr/lib/xorg/modules/dri/i965_dri.so
#8  0x00007fffd3924e0b in _mesa_get_fixed_func_fragment_program () from
/usr/lib/xorg/modules/dri/i965_dri.so
#9  0x00007fffd39cfc36 in _mesa_update_state_locked () from
/usr/lib/xorg/modules/dri/i965_dri.so
#10 0x00007fffd39cfd11 in _mesa_update_state () from
/usr/lib/xorg/modules/dri/i965_dri.so
#11 0x00007fffd39f240c in _mesa_TexImage2D () from
/usr/lib/xorg/modules/dri/i965_dri.so

It also makes Steam crash on start.

Arch Linux x64
Haswell 4770 / HD 4600

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