[Bug 95488] [IGT] gem_exec_flush / uc before fails (speculative fetching)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95488

--- Comment #35 from Hector Velazquez <hector.franciscox.velazquez.suriano at intel.com> ---
This test has fail on GLK QA
Test List
igt at gem_exec_flush@uc-rw-before-default

IGT-Version: 1.21-ga2664f8 (x86_64) (Linux:
4.16.0-rc2-drm-tip-ww9-commit-3a86cab+ x86_64)

======================================
        output sample
======================================
. . .
(gem_exec_flush:670) DEBUG: Test requirement passed: igt_setup_clflush()
(gem_exec_flush:670) drmtest-DEBUG: Test requirement passed: !(fd<0)
(gem_exec_flush:670) igt-debugfs-DEBUG: Opening debugfs directory
'/sys/kernel/debug/dri/0'
(gem_exec_flush:670) drmtest-DEBUG: Test requirement passed: is_i915_device(fd)
&& has_known_intel_chipset(fd)
(gem_exec_flush:670) igt-debugfs-DEBUG: Opening debugfs directory
'/sys/kernel/debug/dri/0'
(gem_exec_flush:670) ioctl-wrappers-DEBUG: Test requirement passed: dir >= 0
(gem_exec_flush:670) ioctl-wrappers-DEBUG: Test requirement passed: err == 0
(gem_exec_flush:670) DEBUG: Test requirement passed: gem_mmap__has_wc(fd)
(gem_exec_flush:670) DEBUG: Test requirement passed: gem_can_store_dword(fd, 0)
Has LLC? no
CPU features: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2
(gem_exec_flush:670) ioctl-wrappers-DEBUG: Test requirement passed:
gem_has_ring(fd, ring)
(gem_exec_flush:670) DEBUG: Test requirement passed: gem_can_store_dword(fd,
ring)
(gem_exec_flush:670) igt-core-DEBUG: Starting subtest: uc-rw-before-default
(gem_exec_flush:684) ioctl-wrappers-DEBUG: Test requirement passed:
__gem_set_caching(fd, handle, caching) == 0
(gem_exec_flush:684) DEBUG: Test requirement passed: __gem_execbuf(fd,
&execbuf) == 0
(gem_exec_flush:684) CRITICAL: Test assertion failure function run, file
gem_exec_flush.c:321:
(gem_exec_flush:684) CRITICAL: Failed assertion: map[i] == i ^ 0xffffffff
(gem_exec_flush:684) CRITICAL: error: 0xdeadbeef != 0xfffffd6c
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [run+0x8f3]
  #2 [_fini+0x170]
Subtest uc-rw-before-default failed.
No log.
child 2 failed with exit status 99
. . .

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