<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW] igt@kms_busy@extended-pageflip-hang-newfb-default-A hard hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=101231#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW] igt@kms_busy@extended-pageflip-hang-newfb-default-A hard hang" href="https://bugs.freedesktop.org/show_bug.cgi?id=101231">bug 101231</a> from <a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> Marta Löfstedt</a> <pre>tested some of the kms_busy --run-subtest extended-* with Villes branch: git://github.com/vsyrjala/linux.git no_commit_reordering Still hit some deadlock: [ 1450.965818] INFO: task kworker/2:3:2643 blocked for more than 120 seconds. [ 1450.965827] Tainted: G U 4.12.0-rc4+ #2 [ 1450.965830] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1450.965833] kworker/2:3 D 0 2643 2 0x00000000 [ 1450.965924] Workqueue: events_long i915_hangcheck_elapsed [i915] [ 1450.965927] Call Trace: [ 1450.965939] __schedule+0x3c4/0x820 [ 1450.965946] schedule+0x36/0x80 [ 1450.965951] schedule_preempt_disabled+0xe/0x10 [ 1450.965956] __ww_mutex_lock.isra.6+0x3de/0x6b0 [ 1450.965963] __ww_mutex_lock_slowpath+0x16/0x20 [ 1450.965968] ? __ww_mutex_lock_slowpath+0x16/0x20 [ 1450.965973] ww_mutex_lock+0x37/0x70 [ 1450.966009] modeset_backoff+0x4b/0xc0 [drm] [ 1450.966039] drm_modeset_backoff+0x10/0x20 [drm] [ 1450.966118] intel_prepare_reset+0x4e/0xe0 [i915] [ 1450.966171] i915_reset_and_wakeup+0xad/0x190 [i915] [ 1450.966224] i915_handle_error+0x1df/0x220 [i915] [ 1450.966229] ? scnprintf+0x49/0x80 [ 1450.966298] hangcheck_declare_hang+0xe2/0x110 [i915] [ 1450.966363] ? gen6_read32+0x9f/0x1c0 [i915] [ 1450.966424] i915_hangcheck_elapsed+0x29f/0x2d0 [i915] [ 1450.966430] process_one_work+0x1e9/0x3f0 [ 1450.966433] worker_thread+0x4b/0x410 [ 1450.966439] kthread+0x109/0x140 [ 1450.966443] ? process_one_work+0x3f0/0x3f0 [ 1450.966448] ? kthread_create_on_node+0x70/0x70 [ 1450.966452] ret_from_fork+0x25/0x30 [ 1450.966456] NMI backtrace for cpu 0 [ 1450.966461] CPU: 0 PID: 36 Comm: khungtaskd Tainted: G U 4.12.0-rc4+ #2 [ 1450.966463] Hardware name: /NUC5i5RYB, BIOS RYBDWi35.86A.0249.2015.0529.1640 05/29/2015 [ 1450.966465] Call Trace: [ 1450.966470] dump_stack+0x63/0x8d [ 1450.966475] nmi_cpu_backtrace+0x94/0xa0 [ 1450.966479] ? irq_force_complete_move+0x140/0x140 [ 1450.966484] nmi_trigger_cpumask_backtrace+0xde/0x110</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>