[Bug 107190] Got seg fault on snb when use INTEL_DEBUG=bat

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107190

            Bug ID: 107190
           Summary: Got seg fault on snb when use INTEL_DEBUG=bat
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: denys.kostin at globallogic.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Hi. During investigating one issue on SNB I faced with another problem:

Appeared during trace replay but shpuld happen to any app on SNB with
INTEL_DEBUG=bat
apitrace: warning: caught signal 11
2706: error: caught an unhandled exception
glretrace+0x23e85c
/lib/x86_64-linux-gnu/libpthread.so.0+0x1138f
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
gen_field_iterator_next+0x88b79b: common/gen_decoder.c:1003
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
decode_3dstate_constant+0x887a76: common/gen_batch_decoder.c:578
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
gen_print_batch+0x888414: common/gen_batch_decoder.c:837
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
submit_batch+0x6384e4:
/home/test/mesa/src/mesa/drivers/dri/i965/intel_batchbuffer.c:815
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
_intel_batchbuffer_flush_fence+0x638785:
/home/test/mesa/src/mesa/drivers/dri/i965/intel_batchbuffer.c:879
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so:
intel_glFlush+0x5ffa7b:
/home/test/mesa/src/mesa/drivers/dri/i965/brw_context.c:247
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so: _mesa_flush+0xba689:
main/context.c:1854
/home/test/mesa_versions/mesa-latest/lib/dri//i965_dri.so: _mesa_Flush+0xba811:
main/context.c:1892
glretrace+0x6039c
glretrace+0xbff3
glretrace+0xc61b
glretrace+0x7e94
/lib/x86_64-linux-gnu/libc.so.6: __libc_start_main+0xef
glretrace: _start+0x28
?
apitrace: info: taking default action for signal 11

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