https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_7/fi-gdg-551/igt@gem_eio@in-flight-internal.html [ 241.790215] ===================================== [ 241.790220] WARNING: bad unlock balance detected! [ 241.790227] 4.16.0-rc6-g94f5d9189e61-drmtip_7+ #1 Tainted: G U [ 241.790233] ------------------------------------- [ 241.790239] kworker/0:1/17 is trying to release lock (crtc_ww_class_acquire) at: [ 241.790256] [<ffffffffb15c7360>] drm_modeset_acquire_fini+0x0/0x60 [ 241.790261] but there are no more locks to release! [ 241.790266] other info that might help us debug this: [ 241.790274] 2 locks held by kworker/0:1/17: [ 241.790278] #0: ((wq_completion)"events_long"){+.+.}, at: [<000000002f5bee42>] process_one_work+0x19e/0x680 [ 241.790294] #1: ((work_completion)(&(&i915->gpu_error.hangcheck_work)->work)){+.+.}, at: [<000000002f5bee42>] process_one_work+0x19e/0x680 [ 241.790309] stack backtrace: [ 241.790316] CPU: 0 PID: 17 Comm: kworker/0:1 Tainted: G U 4.16.0-rc6-g94f5d9189e61-drmtip_7+ #1 [ 241.790325] Hardware name: Dell Inc. OptiPlex GX280 /0G8310, BIOS A04 02/09/2005 [ 241.790455] Workqueue: events_long i915_hangcheck_elapsed [i915] [ 241.790464] Call Trace: [ 241.790474] dump_stack+0x67/0x95 [ 241.790482] ? drm_modeset_backoff+0x1b0/0x1b0 [ 241.790490] print_unlock_imbalance_bug+0xd2/0xe0 [ 241.790498] ? drm_modeset_backoff+0x1b0/0x1b0 [ 241.790504] lock_release+0x23e/0x300 [ 241.790512] drm_modeset_acquire_fini+0x16/0x60 [ 241.790589] intel_finish_reset+0x72/0x160 [i915] [ 241.790647] i915_reset_device+0x1e9/0x240 [i915] [ 241.790705] ? __intel_get_crtc_scanline+0x1c0/0x1c0 [i915] [ 241.790713] ? work_on_cpu_safe+0x50/0x50 [ 241.790771] i915_handle_error+0x1f2/0x470 [i915] [ 241.790782] ? scnprintf+0x3a/0x70 [ 241.790855] i915_hangcheck_elapsed+0x313/0x4a0 [i915] [ 241.790865] process_one_work+0x224/0x680 [ 241.790873] worker_thread+0x35/0x380 [ 241.790880] ? process_one_work+0x680/0x680 [ 241.790887] kthread+0x119/0x130 [ 241.790893] ? _kthread_create_on_node+0x30/0x30 [ 241.790901] ret_from_fork+0x3a/0x50 [ 241.815931] i915 0000:00:02.0: Resetting chip for Manually set wedged engine mask = ffffffffffffffff [ 241.911720] Setting dangerous option reset - tainting kernel [ 241.928002] i915 0000:00:02.0: Resetting chip for Manually set wedged engine mask = ffffffffffffffff This is from ~2 weeks ago, so it may have been fixed already!
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_7/fi-blb-e6850/igt@gem_eio@in-flight-internal.html https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_7/fi-pnv-d510/igt@gem_eio@in-flight-internal.html https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_7/fi-bwr-2160/igt@gem_eio@in-flight-external.html
commit 40da1d310e8a155a09cd64b5b3fd3548a9dcfda0 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Apr 5 13:37:14 2018 +0100 drm/i915: Only call finish_reset after a prepare_reset If we skip the intel_prepare_reset(), we should also skip the intel_display_reset(). If we we use a flag set by intel_prepare_reset() then we do not have to second guess based on external user controlled state whether or not the prepare was called before deciding to finish it after the reset. igt/gem_eio is one such example that may tweak i915.reset faster than the code is expecting, leading to [ 190.233528] ===================================== [ 190.233534] WARNING: bad unlock balance detected! [ 190.233540] 4.16.0-rc7-g335ef9849310-drmtip_10+ #1 Tainted: G U [ 190.233547] ------------------------------------- [ 190.233553] gem_eio/1348 is trying to release lock (crtc_ww_class_acquire) at: [ 190.233569] [<ffffffff895c7810>] drm_modeset_acquire_fini+0x0/0x60 [ 190.233575] but there are no more locks to release! [ 190.233580] other info that might help us debug this: [ 190.233588] 3 locks held by gem_eio/1348: [ 190.233592] #0: (&f->f_pos_lock){+.+.}, at: [<00000000ab90c784>] __fdget_pos+0x3a/0x50 [ 190.233607] #1: (sb_writers#11){.+.+}, at: [<00000000e1529265>] vfs_write+0x188/0x1a0 [ 190.233622] #2: (&attr->mutex){+.+.}, at: [<0000000011f40afe>] simple_attr_write+0x36/0xd0 [ 190.233635] stack backtrace: [ 190.233644] CPU: 0 PID: 1348 Comm: gem_eio Tainted: G U 4.16.0-rc7-g335ef9849310-drmtip_10+ #1 [ 190.233655] Hardware name: Dell Inc. OptiPlex GX280 /0G8310, BIOS A04 02/09/2005 [ 190.233664] Call Trace: [ 190.233674] dump_stack+0x67/0x95 [ 190.233682] ? drm_modeset_backoff+0x1b0/0x1b0 [ 190.233690] print_unlock_imbalance_bug+0xd2/0xe0 [ 190.233698] ? drm_modeset_backoff+0x1b0/0x1b0 [ 190.233704] lock_release+0x23e/0x300 [ 190.233712] drm_modeset_acquire_fini+0x16/0x60 [ 190.233835] intel_finish_reset+0x72/0x160 [i915] [ 190.233894] i915_reset_device+0x1e9/0x240 [i915] [ 190.233953] ? __intel_get_crtc_scanline+0x1c0/0x1c0 [i915] [ 190.233962] ? work_on_cpu_safe+0x50/0x50 [ 190.234020] i915_handle_error+0x1f2/0x470 [i915] [ 190.234031] ? __might_fault+0x39/0x90 [ 190.234037] ? __might_fault+0x39/0x90 [ 190.234099] i915_wedged_set+0x7f/0xc0 [i915] [ 190.234107] simple_attr_write+0xb0/0xd0 [ 190.234117] full_proxy_write+0x51/0x80 [ 190.234125] __vfs_write+0x21/0x140 [ 190.234133] ? rcu_read_lock_sched_held+0x6f/0x80 [ 190.234140] ? rcu_sync_lockdep_assert+0x29/0x50 [ 190.234147] ? __sb_start_write+0x152/0x1f0 [ 190.234152] ? __sb_start_write+0x168/0x1f0 [ 190.234159] vfs_write+0xbd/0x1a0 [ 190.234166] SyS_write+0x40/0xa0 [ 190.234173] ? do_syscall_64+0x19/0x1b0 [ 190.234180] do_syscall_64+0x6b/0x1b0 [ 190.234188] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 190.234196] RIP: 0033:0x7f84c1b392b7 [ 190.234201] RSP: 002b:00007f84b6755b00 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 190.234211] RAX: ffffffffffffffda RBX: 0000000000000046 RCX: 00007f84c1b392b7 [ 190.234218] RDX: 0000000000000002 RSI: 000055ec20abc8d6 RDI: 0000000000000046 [ 190.234225] RBP: 000055ec20abc8d6 R08: 0000000000000000 R09: 0000000000000000 [ 190.234231] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 [ 190.234238] R13: 0000000000000000 R14: 00007f84b0000b20 R15: 000055ec20ce4eb8 Testcase: igt/gem_eio Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180405123714.3638-1-chris@chris-wilson.co.uk
Was this fixed, can you see it Martin?
(In reply to Jani Saarinen from comment #3) > Was this fixed, can you see it Martin? Yes, we have not seen it in 10 runs when it used to be reproducible in all runs, closing.
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