On CI_DRM_3152 on cnl system in CI igt@gem_exec_suspend@basic-s3 causing error. https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3152/fi-cnl-y/igt@gem_exec_suspend@basic-s3.html Results for igt@gem_exec_suspend@basic-s3 Result: dmesg-warn Out IGT-Version: 1.19-g3df22e0d (x86_64) (Linux: 4.14.0-rc2-CI-CI_DRM_3152+ x86_64) rtcwake: wakeup from "mem" using /dev/rtc0 at Thu Sep 28 20:29:11 2017 Subtest basic-S3: SUCCESS (9.471s) Environment PIGLIT_PLATFORM="mixed_glx_egl" PIGLIT_SOURCE_DIR="/opt/igt/piglit" Command /opt/igt/libexec/intel-gpu-tools/gem_exec_suspend --run-subtest basic-S3 Dmesg [ 277.886969] Setting dangerous option reset - tainting kernel [ 279.334108] Suspending console(s) (use no_console_suspend to debug) [ 279.890551] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 283.912201] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x201f0500 [ 284.914685] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x201f0500 [ 285.918189] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to single_cmd mode: last cmd=0x201f0500 [ 286.158699] ====================================================== [ 286.158700] WARNING: possible circular locking dependency detected [ 286.158703] 4.14.0-rc2-CI-CI_DRM_3152+ #1 Tainted: G U [ 286.158704] ------------------------------------------------------ [ 286.158706] rtcwake/3262 is trying to acquire lock: [ 286.158708] ((complete)&st->done){+.+.}, at: [<ffffffff81909e0d>] wait_for_completion+0x1d/0x20 [ 286.158718] but task is already holding lock: [ 286.158719] (sparse_irq_lock){+.+.}, at: [<ffffffff810f22e7>] irq_lock_sparse+0x17/0x20 [ 286.158726] which lock already depends on the new lock. [ 286.158727] the existing dependency chain (in reverse order) is: [ 286.158728] -> #1 (sparse_irq_lock){+.+.}: [ 286.158734] __mutex_lock+0x86/0x9b0 [ 286.158736] mutex_lock_nested+0x1b/0x20 [ 286.158740] irq_lock_sparse+0x17/0x20 [ 286.158743] irq_affinity_online_cpu+0x18/0xd0 [ 286.158746] cpuhp_invoke_callback+0xa3/0x840 [ 286.158746] -> #0 ((complete)&st->done){+.+.}: [ 286.158752] check_prev_add+0x430/0x840 [ 286.158755] __lock_acquire+0x1420/0x15e0 [ 286.158758] lock_acquire+0xb0/0x200 [ 286.158760] wait_for_common+0x58/0x210 [ 286.158762] wait_for_completion+0x1d/0x20 [ 286.158764] takedown_cpu+0x89/0xf0 [ 286.158766] cpuhp_invoke_callback+0xa3/0x840 [ 286.158769] cpuhp_down_callbacks+0x42/0x80 [ 286.158770] _cpu_down+0xb9/0xf0 [ 286.158773] freeze_secondary_cpus+0xa3/0x390 [ 286.158775] suspend_devices_and_enter+0x2fd/0xce0 [ 286.158778] pm_suspend+0x4f0/0x9d0 [ 286.158779] state_store+0x82/0xf0 [ 286.158783] kobj_attr_store+0xf/0x20 [ 286.158787] sysfs_kf_write+0x45/0x60 [ 286.158790] kernfs_fop_write+0x124/0x1c0 [ 286.158792] __vfs_write+0x28/0x130 [ 286.158794] vfs_write+0xcb/0x1c0 [ 286.158796] SyS_write+0x49/0xb0 [ 286.158799] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 286.158800] other info that might help us debug this: [ 286.158800] Possible unsafe locking scenario: [ 286.158801] CPU0 CPU1 [ 286.158802] ---- ---- [ 286.158803] lock(sparse_irq_lock); [ 286.158805] lock((complete)&st->done); [ 286.158807] lock(sparse_irq_lock); [ 286.158809] lock((complete)&st->done); [ 286.158811] *** DEADLOCK *** [ 286.158813] 8 locks held by rtcwake/3262: [ 286.158814] #0: (sb_writers#5){.+.+}, at: [<ffffffff81220701>] vfs_write+0x171/0x1c0 [ 286.158820] #1: (&of->mutex){+.+.}, at: [<ffffffff812a39d2>] kernfs_fop_write+0xf2/0x1c0 [ 286.158826] #2: (kn->count#210){.+.+}, at: [<ffffffff812a39db>] kernfs_fop_write+0xfb/0x1c0 [ 286.158832] #3: (pm_mutex){+.+.}, at: [<ffffffff810e60a9>] pm_suspend+0xa9/0x9d0 [ 286.158837] #4: (acpi_scan_lock){+.+.}, at: [<ffffffff8153b8b7>] acpi_scan_lock_acquire+0x17/0x20 [ 286.158844] #5: (cpu_add_remove_lock){+.+.}, at: [<ffffffff810811ce>] freeze_secondary_cpus+0x2e/0x390 [ 286.158849] #6: (cpu_hotplug_lock.rw_sem){++++}, at: [<ffffffff810d676b>] percpu_down_write+0x2b/0x110 [ 286.158855] #7: (sparse_irq_lock){+.+.}, at: [<ffffffff810f22e7>] irq_lock_sparse+0x17/0x20 [ 286.158861] stack backtrace: [ 286.158864] CPU: 2 PID: 3262 Comm: rtcwake Tainted: G U 4.14.0-rc2-CI-CI_DRM_3152+ #1 [ 286.158866] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X095.A01.1707101424 07/10/2017 [ 286.158867] Call Trace: [ 286.158872] dump_stack+0x68/0x9f [ 286.158876] print_circular_bug+0x235/0x3c0 [ 286.158879] ? lockdep_init_map_crosslock+0x20/0x20 [ 286.158882] check_prev_add+0x430/0x840 [ 286.158888] __lock_acquire+0x1420/0x15e0 [ 286.158890] ? __lock_acquire+0x1420/0x15e0 [ 286.158893] ? lockdep_init_map_crosslock+0x20/0x20 [ 286.158897] lock_acquire+0xb0/0x200 [ 286.158900] ? wait_for_completion+0x1d/0x20 [ 286.158903] wait_for_common+0x58/0x210 [ 286.158905] ? wait_for_completion+0x1d/0x20 [ 286.158907] ? cpuhp_invoke_callback+0x840/0x840 [ 286.158912] ? stop_machine_cpuslocked+0xc1/0xd0 [ 286.158914] ? cpuhp_invoke_callback+0x840/0x840 [ 286.158916] wait_for_completion+0x1d/0x20 [ 286.158919] takedown_cpu+0x89/0xf0 [ 286.158921] ? cpuhp_complete_idle_dead+0x20/0x20 [ 286.158924] cpuhp_invoke_callback+0xa3/0x840 [ 286.158927] cpuhp_down_callbacks+0x42/0x80 [ 286.158930] _cpu_down+0xb9/0xf0 [ 286.158933] freeze_secondary_cpus+0xa3/0x390 [ 286.158936] suspend_devices_and_enter+0x2fd/0xce0 [ 286.158940] pm_suspend+0x4f0/0x9d0 [ 286.158943] state_store+0x82/0xf0 [ 286.158947] kobj_attr_store+0xf/0x20 [ 286.158950] sysfs_kf_write+0x45/0x60 [ 286.158953] kernfs_fop_write+0x124/0x1c0 [ 286.158956] __vfs_write+0x28/0x130 [ 286.158960] ? rcu_read_lock_sched_held+0x7a/0x90 [ 286.158962] ? rcu_sync_lockdep_assert+0x2f/0x60 [ 286.158965] ? __sb_start_write+0x108/0x200 [ 286.158968] vfs_write+0xcb/0x1c0 [ 286.158970] SyS_write+0x49/0xb0 [ 286.158974] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 286.158977] RIP: 0033:0x7f2b7e8378f0 [ 286.158979] RSP: 002b:00007fffb950fe08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 286.158981] RAX: ffffffffffffffda RBX: ffffffff81493023 RCX: 00007f2b7e8378f0 [ 286.158983] RDX: 0000000000000004 RSI: 0000558d2b42e060 RDI: 0000000000000007 [ 286.158984] RBP: ffffc90000293f88 R08: 0000558d2b42bdc0 R09: 00007f2b7ed0b700 [ 286.158986] R10: 00007f2b7eb00b58 R11: 0000000000000246 R12: 0000558d2b42bce0 [ 286.158987] R13: 0000000000000001 R14: 0000000000000004 R15: 0000000000000004 [ 286.158993] ? __this_cpu_preempt_check+0x13/0x20 [ 286.169772] IRQ 32: no longer affine to CPU2 [ 286.169781] IRQ 120: no longer affine to CPU2 [ 286.180638] IRQ 1: no longer affine to CPU3 [ 286.180646] IRQ 8: no longer affine to CPU3 [ 286.180651] IRQ 9: no longer affine to CPU3 [ 286.180672] IRQ 12: no longer affine to CPU3 [ 286.180699] IRQ 16: no longer affine to CPU3 [ 286.180726] IRQ 17: no longer affine to CPU3 [ 286.180761] IRQ 122: no longer affine to CPU3 [ 286.195291] cache: parent cpu1 should not be sleeping [ 286.198990] cache: parent cpu2 should not be sleeping [ 286.202167] cache: parent cpu3 should not be sleeping [ 286.231235] ACPI: button: The lid device is not compliant to SW_LID. [ 286.406396] HDA: we are doing full chip reset now [ 286.423171] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -5 [ 286.440300] CSR SSP Base Not fine [ 286.440315] ------------[ cut here ]------------ [ 286.440334] WARNING: CPU: 2 PID: 5 at drivers/gpu/drm/i915/intel_runtime_pm.c:577 assert_csr_loaded+0x8e/0xc0 [i915] [ 286.440335] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 snd_hda_intel snd_hda_codec asix snd_hwdep usbnet snd_hda_core mii e1000e snd_pcm x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ptp ghash_clmulni_intel pps_core prime_numbers i2c_hid [ 286.440354] CPU: 2 PID: 5 Comm: kworker/u8:0 Tainted: G U 4.14.0-rc2-CI-CI_DRM_3152+ #1 [ 286.440355] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X095.A01.1707101424 07/10/2017 [ 286.440358] Workqueue: events_unbound async_run_entry_fn [ 286.440360] task: ffff8802677d0040 task.stack: ffffc90000068000 [ 286.440377] RIP: 0010:assert_csr_loaded+0x8e/0xc0 [i915] [ 286.440378] RSP: 0000:ffffc9000006bac0 EFLAGS: 00010282 [ 286.440380] RAX: 0000000000000015 RBX: ffff880255510000 RCX: 0000000000000000 [ 286.440381] RDX: 0000000080000001 RSI: 0000000000000001 RDI: ffffffff810eef26 [ 286.440382] RBP: ffffc9000006bac8 R08: 0000000000000001 R09: 0000000000000000 [ 286.440382] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880255510000 [ 286.440383] R13: ffffffffa0258d38 R14: ffff880255510000 R15: 0000000400000000 [ 286.440385] FS: 0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000 [ 286.440386] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.440387] CR2: 0000000000000000 CR3: 0000000003e10001 CR4: 00000000006606e0 [ 286.440387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 286.440388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 286.440389] PKRU: 00000000 [ 286.440390] Call Trace: [ 286.440408] skl_enable_dc6+0x40/0xb0 [i915] [ 286.440425] gen9_dc_off_power_well_disable+0x31/0x40 [i915] [ 286.440442] intel_power_well_disable+0x3e/0x50 [i915] [ 286.440459] intel_display_power_put+0xb5/0x110 [i915] [ 286.440490] intel_display_set_init_power+0x2a/0x40 [i915] [ 286.440516] intel_modeset_setup_hw_state+0xc5b/0xda0 [i915] [ 286.440519] ? ww_mutex_lock+0x42/0xb0 [ 286.440544] __intel_display_resume+0x1f/0xc0 [i915] [ 286.440568] intel_display_resume+0xc7/0x100 [i915] [ 286.440585] i915_pm_restore+0xf4/0x190 [i915] [ 286.440600] i915_pm_resume+0xe/0x10 [i915] [ 286.440603] pci_pm_resume+0x74/0xb0 [ 286.440606] dpm_run_callback+0x6f/0x310 [ 286.440608] ? pci_pm_suspend+0x140/0x140 [ 286.440611] device_resume+0xb4/0x1e0 [ 286.440614] ? dpm_watchdog_set+0x70/0x70 [ 286.440617] async_resume+0x1d/0x50 [ 286.440619] async_run_entry_fn+0x38/0x160 [ 286.440622] process_one_work+0x233/0x660 [ 286.440625] worker_thread+0x4e/0x3b0 [ 286.440628] kthread+0x152/0x190 [ 286.440629] ? process_one_work+0x660/0x660 [ 286.440631] ? kthread_create_on_node+0x40/0x40 [ 286.440633] ret_from_fork+0x27/0x40 [ 286.440636] Code: 05 77 7d 15 00 01 e8 f3 83 fb e0 0f ff eb af 80 3d 66 7d 15 00 00 75 bd 48 c7 c7 f7 82 24 a0 c6 05 56 7d 15 00 01 e8 d3 83 fb e0 <0f> ff eb a6 80 3d 45 7d 15 00 00 75 b4 48 c7 c7 0e 83 24 a0 c6 [ 286.440674] ---[ end trace 623896c0d288792c ]--- [ 286.440676] CSR HTP Not fine [ 286.440686] ------------[ cut here ]------------ [ 286.440704] WARNING: CPU: 2 PID: 5 at drivers/gpu/drm/i915/intel_runtime_pm.c:578 assert_csr_loaded+0xae/0xc0 [i915] [ 286.440705] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 snd_hda_intel snd_hda_codec asix snd_hwdep usbnet snd_hda_core mii e1000e snd_pcm x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ptp ghash_clmulni_intel pps_core prime_numbers i2c_hid [ 286.440720] CPU: 2 PID: 5 Comm: kworker/u8:0 Tainted: G U W 4.14.0-rc2-CI-CI_DRM_3152+ #1 [ 286.440721] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X095.A01.1707101424 07/10/2017 [ 286.440724] Workqueue: events_unbound async_run_entry_fn [ 286.440725] task: ffff8802677d0040 task.stack: ffffc90000068000 [ 286.440742] RIP: 0010:assert_csr_loaded+0xae/0xc0 [i915] [ 286.440743] RSP: 0000:ffffc9000006bac0 EFLAGS: 00010282 [ 286.440744] RAX: 0000000000000010 RBX: ffff880255510000 RCX: 0000000000000000 [ 286.440745] RDX: 0000000080000001 RSI: 0000000000000001 RDI: ffffffff810eef26 [ 286.440746] RBP: ffffc9000006bac8 R08: 0000000000000001 R09: 0000000000000000 [ 286.440747] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880255510000 [ 286.440748] R13: ffffffffa0258d38 R14: ffff880255510000 R15: 0000000400000000 [ 286.440749] FS: 0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000 [ 286.440750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.440751] CR2: 0000000000000000 CR3: 0000000003e10001 CR4: 00000000006606e0 [ 286.440752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 286.440753] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 286.440753] PKRU: 00000000 [ 286.440754] Call Trace: [ 286.440771] skl_enable_dc6+0x40/0xb0 [i915] [ 286.440787] gen9_dc_off_power_well_disable+0x31/0x40 [i915] [ 286.440803] intel_power_well_disable+0x3e/0x50 [i915] [ 286.440820] intel_display_power_put+0xb5/0x110 [i915] [ 286.440836] intel_display_set_init_power+0x2a/0x40 [i915] [ 286.440860] intel_modeset_setup_hw_state+0xc5b/0xda0 [i915] [ 286.440861] ? ww_mutex_lock+0x42/0xb0 [ 286.440885] __intel_display_resume+0x1f/0xc0 [i915] [ 286.440907] intel_display_resume+0xc7/0x100 [i915] [ 286.440924] i915_pm_restore+0xf4/0x190 [i915] [ 286.440939] i915_pm_resume+0xe/0x10 [i915] [ 286.440941] pci_pm_resume+0x74/0xb0 [ 286.440944] dpm_run_callback+0x6f/0x310 [ 286.440946] ? pci_pm_suspend+0x140/0x140 [ 286.440949] device_resume+0xb4/0x1e0 [ 286.440951] ? dpm_watchdog_set+0x70/0x70 [ 286.440955] async_resume+0x1d/0x50 [ 286.440957] async_run_entry_fn+0x38/0x160 [ 286.440959] process_one_work+0x233/0x660 [ 286.440962] worker_thread+0x4e/0x3b0 [ 286.440964] kthread+0x152/0x190 [ 286.440965] ? process_one_work+0x660/0x660 [ 286.440967] ? kthread_create_on_node+0x40/0x40 [ 286.440969] ret_from_fork+0x27/0x40 [ 286.440972] Code: 05 56 7d 15 00 01 e8 d3 83 fb e0 0f ff eb a6 80 3d 45 7d 15 00 00 75 b4 48 c7 c7 0e 83 24 a0 c6 05 35 7d 15 00 01 e8 b3 83 fb e0 <0f> ff eb 9d 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 [ 286.441010] ---[ end trace 623896c0d288792d ]--- [ 286.655622] atkbd serio0: Failed to deactivate keyboard on isa0060/serio0 [ 286.686680] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 [ 286.686799] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 [ 287.039766] atkbd serio0: Failed to enable keyboard on isa0060/serio0 [ 287.368209] Setting dangerous option reset - tainting kernel
Some relation to https://bugs.freedesktop.org/show_bug.cgi?id=102505?
Olso as reference: https://patchwork.kernel.org/patch/9937251/
(In reply to Jani Saarinen from comment #0) > On CI_DRM_3152 on cnl system in CI igt@gem_exec_suspend@basic-s3 > causing error. Same as 103026. Ok to dup?
We have a bunch of these lockdep bugs open. Let's try-bot the Peter Zijlstra patch and see if it helps.
https://patchwork.freedesktop.org/series/31251/
The fixes from Peter Zijlstra are included in 4.14.0-rc3. From CI_DRM_3959 drm-tip is 4.14.0-rc3. And we are no longer seeing the lockdep.
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