FYI, we noticed the following commit: commit: 841021713a4d700059774e0d3c77ec6c538daae2 ("drm/i915: Add bannable context parameter") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master in testcase: piglit with following parameters: group: igt-basic test-description: Piglit is a collection of automated tests for OpenGL implementations. test-url: https://people.freedesktop.org/~nh/piglit/ on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 8G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): [ 214.707295] 2016-12-01 00:36:45 piglit run igt -t igt/gem_ctx_param/basic-default /tmp/lkp/piglit-results [ 214.707295] [ 216.204193] [IGT] gem_ctx_param: executing [ 216.226545] [IGT] gem_ctx_param: starting subtest basic-default [ 216.234398] [IGT] gem_ctx_param: exiting, ret=99 [ 216.287295] [1/1] fail: 1 | [ 216.289926] [ 216.365946] [1/1] fail: 1 [ 216.368636] [ 216.371057] [ 216.373161] [ 216.375618] [ 216.377890] Thank you for running Piglit! [ 216.381747] [ 216.384232] Results have been written to /tmp/lkp/piglit-results [ 216.390082] [ 216.392936] igt/gem_ctx_param/basic-default.seconds: 1.689120490 [ 216.398804] [ 216.401487] 2016-12-01 00:36:47 piglit summary console /tmp/lkp/piglit-results/results.json.bz2 [ 216.410029] [ 216.471566] igt/gem_ctx_param/basic-default: fail [ 216.476113] [ 216.478127] summary: [ 216.480151] [ 216.482355] name: piglit-results [ 216.486023] [ 216.488184] ---- -------------- [ 216.491851] [ 216.494010] pass: 0 [ 216.497677] [ 216.499827] fail: 1 [ 216.503491] [ 216.505714] crash: 0 [ 216.509381] [ 216.511596] skip: 0 [ 216.515281] [ 216.517469] timeout: 0 [ 216.521135] [ 216.523344] warn: 0 [ 216.527009] [ 216.529133] incomplete: 0 [ 216.532800] [ 216.534984] dmesg-warn: 0 [ 216.538651] [ 216.540796] dmesg-fail: 0 [ 216.544463] [ 216.546638] changes: 0 [ 216.550303] [ 216.552481] fixes: 0 [ 216.556151] [ 216.558340] regressions: 0 [ 216.562003] [ 216.564118] total: 1 [ 216.567786] [ 216.570650] 2016-12-01 00:36:47 piglit run igt -t igt/kms_sink_crc_basic /tmp/lkp/piglit-results [ 216.579266] [ 217.988055] [IGT] kms_sink_crc_basic: executing [ 218.039892] [IGT] kms_sink_crc_basic: exiting, ret=77 [ 218.120991] [1/1] skip: 1 | [ 218.123673] To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Xiaolong