[Bug 110913] New: [CI][SHARDS] Igt@* - dmesg-warn - WARNING: possible circular locking dependency detected
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Jun 13 12:17:43 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=110913
Bug ID: 110913
Summary: [CI][SHARDS] Igt@* - dmesg-warn - WARNING: possible
circular locking dependency detected
Product: DRI
Version: DRI git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: lakshminarayana.vudum at intel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6249/re-cml-u/igt@gem_persistent_relocs@forked-faulting-reloc-thrashing.html
<6> [194.764268] Console: switching to colour dummy device 80x25
<6> [194.764311] [IGT] gem_persistent_relocs: executing
<6> [194.774481] [IGT] gem_persistent_relocs: starting subtest
forked-faulting-reloc-thrashing
<5> [194.779443] Setting dangerous option prefault_disable - tainting kernel
<5> [194.781849] Setting dangerous option prefault_disable - tainting kernel
<5> [194.784406] Setting dangerous option prefault_disable - tainting kernel
<5> [194.788362] Setting dangerous option prefault_disable - tainting kernel
<7> [194.790251] [drm:intel_power_well_enable [i915]] enabling DC off
<7> [194.790289] [drm:gen9_set_dc_state [i915]] Setting DC state from 02 to 00
<5> [194.792327] Setting dangerous option prefault_disable - tainting kernel
<5> [194.796117] Setting dangerous option prefault_disable - tainting kernel
<5> [194.800471] Setting dangerous option prefault_disable - tainting kernel
<5> [194.802502] Setting dangerous option prefault_disable - tainting kernel
<4> [195.305572]
<4> [195.305577] ======================================================
<4> [195.305580] WARNING: possible circular locking dependency detected
<4> [195.305584] 5.2.0-rc4-CI-CI_DRM_6249+ #1 Tainted: G U
<4> [195.305587] ------------------------------------------------------
<4> [195.305589] gem_persistent_/1507 is trying to acquire lock:
<4> [195.305592] 0000000016c7d56e (i915.reset){+.+.}, at:
i915_request_wait+0x148/0x940 [i915]
<4> [195.305671]
but task is already holding lock:
<4> [195.305673] 000000007f2a8000 (&dev->struct_mutex/1){+.+.}, at:
shrinker_lock+0x63/0x80 [i915]
<4> [195.305707]
which lock already depends on the new lock.
<4> [195.305710]
the existing dependency chain (in reverse order) is:
<4> [195.305712]
-> #4 (&dev->struct_mutex/1){+.+.}:
<4> [195.305742] i915_gem_shrinker_taints_mutex+0x52/0xe0 [i915]
<4> [195.305771] i915_address_space_init+0x59/0x120 [i915]
<4> [195.305799] i915_ggtt_init_hw+0x50/0x140 [i915]
<4> [195.305821] i915_driver_load+0xebb/0x18b0 [i915]
<4> [195.305842] i915_pci_probe+0x3f/0x1a0 [i915]
<4> [195.305847] pci_device_probe+0x9e/0x120
<4> [195.305850] really_probe+0xea/0x3c0
<4> [195.305853] driver_probe_device+0x10b/0x120
<4> [195.305855] device_driver_attach+0x4a/0x50
<4> [195.305857] __driver_attach+0x97/0x130
<4> [195.305860] bus_for_each_dev+0x74/0xc0
<4> [195.305862] bus_add_driver+0x13f/0x210
<4> [195.305864] driver_register+0x56/0xe0
<4> [195.305867] do_one_initcall+0x58/0x300
<4> [195.305871] do_init_module+0x56/0x1f6
<4> [195.305873] load_module+0x24d1/0x2990
<4> [195.305875] __se_sys_finit_module+0xd3/0xf0
<4> [195.305878] do_syscall_64+0x55/0x1c0
<4> [195.305881] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [195.305883]
-> #3 (fs_reclaim){+.+.}:
<4> [195.305888] fs_reclaim_acquire.part.24+0x24/0x30
<4> [195.305891] kmem_cache_alloc_trace+0x2a/0x290
<4> [195.305918] i915_gem_object_get_pages_stolen+0xa2/0x130 [i915]
<4> [195.305945] ____i915_gem_object_get_pages+0x1d/0xa0 [i915]
<4> [195.305971] __i915_gem_object_get_pages+0x59/0xb0 [i915]
<4> [195.305998] _i915_gem_object_create_stolen+0xd4/0x100 [i915]
<4> [195.306024] i915_gem_object_create_stolen+0x67/0xb0 [i915]
<4> [195.306053] i915_gem_init+0xe5/0xac0 [i915]
<4> [195.306073] i915_driver_load+0xdc0/0x18b0 [i915]
<4> [195.306095] i915_pci_probe+0x3f/0x1a0 [i915]
<4> [195.306098] pci_device_probe+0x9e/0x120
<4> [195.306100] really_probe+0xea/0x3c0
<4> [195.306102] driver_probe_device+0x10b/0x120
<4> [195.306105] device_driver_attach+0x4a/0x50
<4> [195.306107] __driver_attach+0x97/0x130
<4> [195.306109] bus_for_each_dev+0x74/0xc0
<4> [195.306111] bus_add_driver+0x13f/0x210
<4> [195.306113] driver_register+0x56/0xe0
<4> [195.306116] do_one_initcall+0x58/0x300
<4> [195.306118] do_init_module+0x56/0x1f6
<4> [195.306120] load_module+0x24d1/0x2990
<4> [195.306122] __se_sys_finit_module+0xd3/0xf0
<4> [195.306125] do_syscall_64+0x55/0x1c0
<4> [195.306127] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [195.306129]
-> #2 (&obj->mm.lock){+.+.}:
<4> [195.306133] __mutex_lock+0x8c/0x960
<4> [195.306158] i915_gem_object_pin_map+0x2d/0x2a0 [i915]
<4> [195.306182] __engine_unpark+0x42/0x80 [i915]
<4> [195.306205] __intel_wakeref_get_first+0x40/0xa0 [i915]
<4> [195.306233] i915_request_create+0x101/0x240 [i915]
<4> [195.306260] i915_gem_do_execbuffer+0xbbc/0x21b0 [i915]
<4> [195.306285] i915_gem_execbuffer2_ioctl+0x11b/0x430 [i915]
<4> [195.306289] drm_ioctl_kernel+0x83/0xf0
<4> [195.306291] drm_ioctl+0x2f3/0x3b0
<4> [195.306294] do_vfs_ioctl+0xa0/0x6e0
<4> [195.306297] ksys_ioctl+0x35/0x60
<4> [195.306299] __x64_sys_ioctl+0x11/0x20
<4> [195.306301] do_syscall_64+0x55/0x1c0
<4> [195.306303] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [195.306305]
-> #1 (wakeref#2/1){+.+.}:
<4> [195.306309] __mutex_lock+0x8c/0x960
<4> [195.306331] __intel_wakeref_get_first+0x24/0xa0 [i915]
<4> [195.306355] reset_prepare_engine+0x9/0x30 [i915]
<4> [195.306379] reset_prepare+0x29/0x40 [i915]
<4> [195.306403] i915_reset+0x9f/0x3d0 [i915]
<4> [195.306427] i915_reset_device+0xf2/0x170 [i915]
<4> [195.306450] i915_handle_error+0x231/0x370 [i915]
<4> [195.306473] i915_wedged_set+0x57/0xc0 [i915]
<4> [195.306477] simple_attr_write+0xb0/0xd0
<4> [195.306480] full_proxy_write+0x51/0x80
<4> [195.306483] vfs_write+0xbd/0x1b0
<4> [195.306485] ksys_write+0x8f/0xe0
<4> [195.306487] do_syscall_64+0x55/0x1c0
<4> [195.306490] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [195.306492]
-> #0 (i915.reset){+.+.}:
<4> [195.306496] lock_acquire+0xa6/0x1c0
<4> [195.306524] i915_request_wait+0x16f/0x940 [i915]
<4> [195.306552] i915_gem_wait_for_idle+0xf5/0x5e0 [i915]
<4> [195.306579] i915_gem_shrink+0x4b0/0x630 [i915]
<4> [195.306605] i915_gem_shrink_all+0x2c/0x50 [i915]
<4> [195.306629] i915_drop_caches_set+0x1de/0x270 [i915]
<4> [195.306631] simple_attr_write+0xb0/0xd0
<4> [195.306634] full_proxy_write+0x51/0x80
<4> [195.306636] vfs_write+0xbd/0x1b0
<4> [195.306639] ksys_write+0x8f/0xe0
<4> [195.306641] do_syscall_64+0x55/0x1c0
<4> [195.306644] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [195.306646]
other info that might help us debug this:
<4> [195.306649] Chain exists of:
i915.reset --> fs_reclaim --> &dev->struct_mutex/1
<4> [195.306654] Possible unsafe locking scenario:
<4> [195.306656] CPU0 CPU1
<4> [195.306658] ---- ----
<4> [195.306659] lock(&dev->struct_mutex/1);
<4> [195.306661] lock(fs_reclaim);
<4> [195.306664] lock(&dev->struct_mutex/1);
<4> [195.306666] lock(i915.reset);
<4> [195.306668]
*** DEADLOCK ***
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6250/re-icl-u/igt@gem_persistent_relocs@forked-faulting-reloc-thrashing.html
<6> [558.123450] Console: switching to colour dummy device 80x25
<6> [558.123486] [IGT] gem_persistent_relocs: executing
<6> [558.139070] [IGT] gem_persistent_relocs: starting subtest
forked-faulting-reloc-thrashing
<5> [558.144289] Setting dangerous option prefault_disable - tainting kernel
<5> [558.146790] Setting dangerous option prefault_disable - tainting kernel
<5> [558.150358] Setting dangerous option prefault_disable - tainting kernel
<5> [558.154106] Setting dangerous option prefault_disable - tainting kernel
<5> [558.157928] Setting dangerous option prefault_disable - tainting kernel
<5> [558.161480] Setting dangerous option prefault_disable - tainting kernel
<5> [558.164165] Setting dangerous option prefault_disable - tainting kernel
<5> [558.166581] Setting dangerous option prefault_disable - tainting kernel
<4> [558.932217]
<4> [558.932222] ======================================================
<4> [558.932224] WARNING: possible circular locking dependency detected
<4> [558.932227] 5.2.0-rc4-CI-CI_DRM_6250+ #1 Tainted: G U
<4> [558.932229] ------------------------------------------------------
<4> [558.932231] gem_persistent_/4166 is trying to acquire lock:
<4> [558.932234] 00000000c23189ff (i915.reset){+.+.}, at:
i915_request_wait+0x148/0x940 [i915]
<4> [558.932289]
but task is already holding lock:
<4> [558.932292] 0000000042388a8d (&dev->struct_mutex/1){+.+.}, at:
shrinker_lock+0x63/0x80 [i915]
<4> [558.932324]
which lock already depends on the new lock.
<4> [558.932326]
the existing dependency chain (in reverse order) is:
<4> [558.932329]
-> #4 (&dev->struct_mutex/1){+.+.}:
<4> [558.932358] i915_gem_shrinker_taints_mutex+0x52/0xe0 [i915]
<4> [558.932387] i915_address_space_init+0x59/0x120 [i915]
<4> [558.932415] i915_ggtt_init_hw+0x50/0x140 [i915]
<4> [558.932435] i915_driver_load+0xebb/0x18b0 [i915]
<4> [558.932456] i915_pci_probe+0x3f/0x1a0 [i915]
<4> [558.932460] pci_device_probe+0x9e/0x120
<4> [558.932463] really_probe+0xea/0x3c0
<4> [558.932466] driver_probe_device+0x10b/0x120
<4> [558.932468] device_driver_attach+0x4a/0x50
<4> [558.932470] __driver_attach+0x97/0x130
<4> [558.932472] bus_for_each_dev+0x74/0xc0
<4> [558.932475] bus_add_driver+0x13f/0x210
<4> [558.932477] driver_register+0x56/0xe0
<4> [558.932480] do_one_initcall+0x58/0x300
<4> [558.932483] do_init_module+0x56/0x1f6
<4> [558.932486] load_module+0x24d1/0x2990
<4> [558.932488] __se_sys_finit_module+0xd3/0xf0
<4> [558.932490] do_syscall_64+0x55/0x1c0
<4> [558.932494] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [558.932496]
-> #3 (fs_reclaim){+.+.}:
<4> [558.932500] fs_reclaim_acquire.part.24+0x24/0x30
<4> [558.932503] kmem_cache_alloc_trace+0x2a/0x290
<4> [558.932529] i915_gem_object_get_pages_stolen+0xa2/0x130 [i915]
<4> [558.932555] ____i915_gem_object_get_pages+0x1d/0xa0 [i915]
<4> [558.932580] __i915_gem_object_get_pages+0x59/0xb0 [i915]
<4> [558.932605] _i915_gem_object_create_stolen+0xd4/0x100 [i915]
<4> [558.932630] i915_gem_object_create_stolen+0x67/0xb0 [i915]
<4> [558.932657] i915_gem_init+0xe5/0xac0 [i915]
<4> [558.932677] i915_driver_load+0xdc0/0x18b0 [i915]
<4> [558.932697] i915_pci_probe+0x3f/0x1a0 [i915]
<4> [558.932700] pci_device_probe+0x9e/0x120
<4> [558.932702] really_probe+0xea/0x3c0
<4> [558.932704] driver_probe_device+0x10b/0x120
<4> [558.932707] device_driver_attach+0x4a/0x50
<4> [558.932709] __driver_attach+0x97/0x130
<4> [558.932711] bus_for_each_dev+0x74/0xc0
<4> [558.932713] bus_add_driver+0x13f/0x210
<4> [558.932716] driver_register+0x56/0xe0
<4> [558.932718] do_one_initcall+0x58/0x300
<4> [558.932720] do_init_module+0x56/0x1f6
<4> [558.932722] load_module+0x24d1/0x2990
<4> [558.932724] __se_sys_finit_module+0xd3/0xf0
<4> [558.932727] do_syscall_64+0x55/0x1c0
<4> [558.932729] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [558.932731]
-> #2 (&obj->mm.lock){+.+.}:
<4> [558.932734] __mutex_lock+0x8c/0x960
<4> [558.932759] i915_gem_object_pin_map+0x2d/0x2a0 [i915]
<4> [558.932792] __engine_unpark+0x42/0x80 [i915]
<4> [558.932828] __intel_wakeref_get_first+0x40/0xa0 [i915]
<4> [558.932867] i915_request_create+0x101/0x240 [i915]
<4> [558.932908] i915_gem_do_execbuffer+0xbbc/0x21b0 [i915]
<4> [558.932945] i915_gem_execbuffer2_ioctl+0x11b/0x430 [i915]
<4> [558.932949] drm_ioctl_kernel+0x83/0xf0
<4> [558.932952] drm_ioctl+0x2f3/0x3b0
<4> [558.932956] do_vfs_ioctl+0xa0/0x6e0
<4> [558.932959] ksys_ioctl+0x35/0x60
<4> [558.932962] __x64_sys_ioctl+0x11/0x20
<4> [558.932965] do_syscall_64+0x55/0x1c0
<4> [558.932969] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [558.932972]
-> #1 (wakeref#2/1){+.+.}:
<4> [558.932977] __mutex_lock+0x8c/0x960
<4> [558.933012] __intel_wakeref_get_first+0x24/0xa0 [i915]
<4> [558.933049] reset_prepare_engine+0x9/0x30 [i915]
<4> [558.933085] reset_prepare+0x29/0x40 [i915]
<4> [558.933121] i915_reset+0x9f/0x3d0 [i915]
<4> [558.933156] i915_reset_device+0xf2/0x170 [i915]
<4> [558.933192] i915_handle_error+0x231/0x370 [i915]
<4> [558.933228] i915_wedged_set+0x57/0xc0 [i915]
<4> [558.933232] simple_attr_write+0xb0/0xd0
<4> [558.933236] full_proxy_write+0x51/0x80
<4> [558.933240] vfs_write+0xbd/0x1b0
<4> [558.933243] ksys_write+0x8f/0xe0
<4> [558.933246] do_syscall_64+0x55/0x1c0
<4> [558.933250] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [558.933253]
-> #0 (i915.reset){+.+.}:
<4> [558.933258] lock_acquire+0xa6/0x1c0
<4> [558.933296] i915_request_wait+0x16f/0x940 [i915]
<4> [558.933334] i915_gem_wait_for_idle+0xf5/0x5e0 [i915]
<4> [558.933371] i915_gem_shrink+0x4b0/0x630 [i915]
<4> [558.933407] i915_gem_shrink_all+0x2c/0x50 [i915]
<4> [558.933443] i915_drop_caches_set+0x1de/0x270 [i915]
<4> [558.933446] simple_attr_write+0xb0/0xd0
<4> [558.933450] full_proxy_write+0x51/0x80
<4> [558.933453] vfs_write+0xbd/0x1b0
<4> [558.933456] ksys_write+0x8f/0xe0
<4> [558.933459] do_syscall_64+0x55/0x1c0
<4> [558.933462] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [558.933466]
other info that might help us debug this:
<4> [558.933470] Chain exists of:
i915.reset --> fs_reclaim --> &dev->struct_mutex/1
<4> [558.933476] Possible unsafe locking scenario:
<4> [558.933480] CPU0 CPU1
<4> [558.933482] ---- ----
<4> [558.933485] lock(&dev->struct_mutex/1);
<4> [558.933488] lock(fs_reclaim);
<4> [558.933491] lock(&dev->struct_mutex/1);
<4> [558.933495] lock(i915.reset);
<4> [558.933498]
*** DEADLOCK ***
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