Created attachment 127443 [details] gem_exec_alignment single test logfile. While executing IGT we found the below test regression on BDW, attached dmesg log file. gem_exec_alignment@single Output ======================================================================== (gem_exec_alignment:1223) CRITICAL: Test assertion failure function single, file gem_exec_align (gem_exec_alignment:1223) CRITICAL: Failed assertion: execobj.offset % execobj.alignment == 0 (gem_exec_alignment:1223) CRITICAL: error: 0xfffff000 != 0 Stack trace: #0 [__igt_fail_assert+0x101] #1 [__real_main198+0x7b3] #2 [main+0x23] #3 [__libc_start_main+0xf0] #4 [_start+0x29] #5 [<unknown>+0x29] Subtest single failed. **** DEBUG **** (gem_exec_alignment:1223) DEBUG: execbuffer() accepts non-power-of-two alignment? no (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffffff000, next alignment: 0x1000 [1 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffffff000, next alignment: 0x2000 [1 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffffe000, next alignment: 0x4000 [1 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffffc000, next alignment: 0x8000 [1 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffff8000, next alignment: 0x10000 [ (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffff0000, next alignment: 0x20000 [ (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffffe0000, next alignment: 0x40000 [ (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffffc0000, next alignment: 0x80000 [ (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffff80000, next alignment: 0x100000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffff00000, next alignment: 0x200000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffe00000, next alignment: 0x400000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffffc00000, next alignment: 0x800000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffff800000, next alignment: 0x1000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffff000000, next alignment: 0x2000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffe000000, next alignment: 0x4000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffffc000000, next alignment: 0x8000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffff8000000, next alignment: 0x1000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xfffffffff0000000, next alignment: 0x2000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffe0000000, next alignment: 0x4000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffffc0000000, next alignment: 0x8000000 (gem_exec_alignment:1223) DEBUG: starting offset: 0xffffffff80000000, next alignment: 0x1000000 (gem_exec_alignment:1223) CRITICAL: Test assertion failure function single, file gem_exec_align (gem_exec_alignment:1223) CRITICAL: Failed assertion: execobj.offset % execobj.alignment == 0 (gem_exec_alignment:1223) CRITICAL: error: 0xfffff000 != 0 **** END **** Used the below Configuration Kernel ================================================================= Branch : drm-intel-nightly WW42 commit 15dfed2b90e84e7c277f81842fc3f19355293061 Author: Lyude <thatslyude@gmail.com> Date: Sun Oct 16 19:16:08 2016 -0400 drm-intel-nightly: 2016y-10m-16d-23h-15m-00s UTC integration manifest Gfx stack ================================================================= Component : drm tag : libdrm-2.4.71 commit : a44c9c31b7b38b3eedf3d26648f9e68dcc377c4c Component : cairo tag : 1.15.2 commit : db8a7f1697c49ae4942d2aa49eed52dd73dd9c7a Component : intel-gpu-tools tag : intel-gpu-tools-1.16-83-g54f8a3f commit : 54f8a3f7cf12eea484a0b0641718ced559959f53
Test was passing under the following nightly commit: commit f35ed31aea66b3230c366fcba5f3456ae2cb956e Author: Jani Nikula <jani.nikula@intel.com> Date: Mon Oct 10 14:29:09 2016 +0300 drm-intel-nightly: 2016y-10m-10d-11h-28m-51s UTC integration manifest Will perform bisection and publish findings soon.
No need. This test was written to demonstrate a bug since inception of drm_mm.
*** This bug has been marked as a duplicate of bug 97973 ***
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