Booted next-20170130 with a flash memory card forgotten in the reader slot,
and it produced a truly impressive amount of splattage - managing to trigger
both a BUG for sleeping in an invalid context *and* a lockdep whinge. I can't
tell if it's 2 mmc bugs, or if lockdep got confused due to the BUG happening
at an unexpected time...
No idea how long it's been broken, it's been a few months since I last offloaded
the storage cards in my camera to external media...
(kernel is -dirty due to an unrelated local fix for an IPv6 VPN issue)
[ 3.338722] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:748
[ 3.338841] in_atomic(): 1, irqs_disabled(): 1, pid: 34, name: kworker/1:1
[ 3.338929] 3 locks held by kworker/1:1/34:
[ 3.338932] #0: ("events_freezable"){.+.+.+}, at: [<ffffffff910f3ea3>] process_one_work+0x2f3/0xf40
[ 3.338952] #1: ((&(&host->detect)->work)){+.+.+.}, at: [<ffffffff910f3ea3>] process_one_work+0x2f3/0xf40
[ 3.338967] #2: (&(&host->lock)->rlock#3){-.-...}, at: [<ffffffff91c2b6c5>] sdhci_request+0x55/0x220
[ 3.338986] irq event stamp: 8446
[ 3.338992] hardirqs last enabled at (8445): [<ffffffff9221a726>] _raw_spin_unlock_irqrestore+0x86/0xa0
[ 3.338996] hardirqs last disabled at (8446): [<ffffffff9221a30e>] _raw_spin_lock_irqsave+0x1e/0x90
[ 3.339002] softirqs last enabled at (7472): [<ffffffff92221025>] __do_softirq+0x585/0xa7d
[ 3.339007] softirqs last disabled at (7463): [<ffffffff910c59bb>] irq_exit+0x10b/0x170
[ 3.339012] CPU: 1 PID: 34 Comm: kworker/1:1 Not tainted 4.10.0-rc6-next-20170130-dirty #379
[ 3.339016] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A18 10/13/2016
[ 3.339022] Workqueue: events_freezable mmc_rescan
[ 3.339028] Call Trace:
[ 3.339036] dump_stack+0x7b/0xc8
[ 3.339043] ___might_sleep+0x194/0x300
[ 3.339050] __might_sleep+0x6e/0x220
[ 3.339056] ? pcpu_alloc+0x4d6/0x900
[ 3.339061] __mutex_lock+0x59/0x17c0
[ 3.339068] ? __alloc_pages_nodemask+0x36c/0x540
[ 3.339072] ? pcpu_alloc+0x4d6/0x900
[ 3.339077] ? do_raw_spin_unlock+0xdd/0x1d0
[ 3.339084] ? _raw_spin_unlock+0x69/0x80
[ 3.339089] ? cache_alloc_refill+0x90b/0x1310
[ 3.339096] mutex_lock_nested+0x1b/0x20
[ 3.339100] pcpu_alloc+0x4d6/0x900
[ 3.339105] ? debug_check_no_locks_freed+0xe1/0x200
[ 3.339114] __alloc_percpu+0x15/0x20
[ 3.339119] init_iova_domain+0xec/0x300
[ 3.339127] find_or_alloc_domain.constprop.34+0x8c/0x4f0
[ 3.339133] ? _raw_spin_lock_irqsave+0x78/0x90
[ 3.339140] __get_valid_domain_for_dev+0x51/0x380
[ 3.339145] ? do_raw_spin_unlock+0xdd/0x1d0
[ 3.339152] intel_map_sg+0x28d/0x3a0
[ 3.339157] ? mod_timer+0x2a7/0xb30
[ 3.339165] sdhci_pre_dma_transfer+0xf2/0x1c0
[ 3.339173] sdhci_send_command+0x55a/0x10d0
[ 3.339178] ? sdhci_request+0x55/0x220
[ 3.339187] sdhci_request+0xe6/0x220
[ 3.339194] __mmc_start_request+0xab/0x4a0
[ 3.339198] ? led_trigger_event+0x6f/0x90
[ 3.339204] mmc_start_request+0x1a5/0x2b0
[ 3.339210] mmc_wait_for_req+0xc7/0x1e0
[ 3.339216] mmc_app_send_scr+0x14c/0x200
[ 3.339239] ? mmc_align_data_size+0x20/0x20
[ 3.339247] mmc_sd_setup_card+0x32/0x7f0
[ 3.339254] mmc_sd_init_card+0x179/0xab0
[ 3.339260] ? _raw_spin_unlock_irqrestore+0x78/0xa0
[ 3.339268] mmc_attach_sd+0xea/0x200
[ 3.339274] mmc_rescan+0x336/0x550
[ 3.339282] process_one_work+0x38a/0xf40
[ 3.339286] ? process_one_work+0x2f3/0xf40
[ 3.339298] worker_thread+0x315/0xc70
[ 3.339309] kthread+0x176/0x250
[ 3.339314] ? process_one_work+0xf40/0xf40
[ 3.339318] ? kthread_create_on_node+0x60/0x60
[ 3.339324] ret_from_fork+0x2e/0x40
[ 3.339355] ======================================================
[ 3.339499] 4.10.0-rc6-next-20170130-dirty #379 Tainted: G W
[ 3.339560] ------------------------------------------------------
[ 3.339618] kworker/1:1/34 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[ 3.339678] (pcpu_alloc_mutex){+.+.+.}, at: [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
and this task is already holding:
[ 3.339805] (&(&host->lock)->rlock#3){-.-...}, at: [<ffffffff91c2b6c5>] sdhci_request+0x55/0x220
[ 3.339890] which would create a new lock dependency:
[ 3.339937] (&(&host->lock)->rlock#3){-.-...} -> (pcpu_alloc_mutex){+.+.+.}
but this new dependency connects a HARDIRQ-irq-safe lock:
[ 3.340077] (&(&host->lock)->rlock#3){-.-...}
... which became HARDIRQ-irq-safe at:
[ 3.340180] [<ffffffff91164956>] __lock_acquire+0x636/0x18b0
[ 3.340251] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.340320] [<ffffffff9221a0b1>] _raw_spin_lock+0x41/0x80
[ 3.340390] [<ffffffff91c2c37c>] sdhci_irq+0x2c/0xed0
[ 3.340471] [<ffffffff91179281>] __handle_irq_event_percpu+0x61/0x6a0
[ 3.340549] [<ffffffff911798f4>] handle_irq_event_percpu+0x34/0xb0
[ 3.340625] [<ffffffff911799bb>] handle_irq_event+0x4b/0xc0
[ 3.340694] [<ffffffff9117f7b8>] handle_fasteoi_irq+0xb8/0x330
[ 3.340767] [<ffffffff91039e31>] handle_irq+0xa1/0x370
[ 3.340835] [<ffffffff9221d6f3>] do_IRQ+0x83/0x1b0
[ 3.340898] [<ffffffff9221bad0>] ret_from_intr+0x0/0x19
[ 3.340967] [<ffffffff91c01564>] cpuidle_enter_state+0xe4/0x690
[ 3.341041] [<ffffffff91c01b67>] cpuidle_enter+0x17/0x20
[ 3.341109] [<ffffffff9114eef3>] do_idle+0x223/0x420
[ 3.341175] [<ffffffff9114f96c>] cpu_startup_entry+0x7c/0x90
[ 3.341248] [<ffffffff9220834c>] rest_init+0x15c/0x170
[ 3.341315] [<ffffffff938a974c>] start_kernel+0x74e/0x78f
[ 3.341383] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.341474] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.341549] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
to a HARDIRQ-irq-unsafe lock:
[ 3.341664] (pcpu_alloc_mutex){+.+.+.}
... which became HARDIRQ-irq-unsafe at:
[ 3.341758] ...
[ 3.341780] [<ffffffff911649aa>] __lock_acquire+0x68a/0x18b0
[ 3.341851] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.341919] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.345428] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.352339] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.358156] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.363931] [<ffffffff913bcd61>] alloc_kmem_cache_cpus.isra.33+0x31/0x140
[ 3.370189] [<ffffffff913c2c9d>] __do_tune_cpucache+0x3d/0x220
[ 3.375726] [<ffffffff913c2eaa>] do_tune_cpucache+0x2a/0x180
[ 3.381049] [<ffffffff913c3099>] enable_cpucache+0x99/0x210
[ 3.386394] [<ffffffff93918a9b>] kmem_cache_init_late+0x85/0xf4
[ 3.391317] [<ffffffff938a94bb>] start_kernel+0x4bd/0x78f
[ 3.394909] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.398076] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.401271] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
other info that might help us debug this:
[ 3.409256] Possible interrupt unsafe locking scenario:
[ 3.412429] CPU0 CPU1
[ 3.414005] ---- ----
[ 3.415578] lock(pcpu_alloc_mutex);
[ 3.417127] local_irq_disable();
[ 3.418690] lock(&(&host->lock)->rlock#3);
[ 3.420240] lock(pcpu_alloc_mutex);
[ 3.421784] <Interrupt>
[ 3.423300] lock(&(&host->lock)->rlock#3);
*** DEADLOCK ***
[ 3.429283] 3 locks held by kworker/1:1/34:
[ 3.430771] #0: ("events_freezable"){.+.+.+}, at: [<ffffffff910f3ea3>] process_one_work+0x2f3/0xf40
[ 3.433863] #1: ((&(&host->detect)->work)){+.+.+.}, at: [<ffffffff910f3ea3>] process_one_work+0x2f3/0xf40
[ 3.435446] #2: (&(&host->lock)->rlock#3){-.-...}, at: [<ffffffff91c2b6c5>] sdhci_request+0x55/0x220
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
[ 3.441767] -> (&(&host->lock)->rlock#3){-.-...} ops: 242 {
[ 3.443374] IN-HARDIRQ-W at:
[ 3.444974] [<ffffffff91164956>] __lock_acquire+0x636/0x18b0
[ 3.448165] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.451356] [<ffffffff9221a0b1>] _raw_spin_lock+0x41/0x80
[ 3.454560] [<ffffffff91c2c37c>] sdhci_irq+0x2c/0xed0
[ 3.457745] [<ffffffff91179281>] __handle_irq_event_percpu+0x61/0x6a0
[ 3.460929] [<ffffffff911798f4>] handle_irq_event_percpu+0x34/0xb0
[ 3.464118] [<ffffffff911799bb>] handle_irq_event+0x4b/0xc0
[ 3.467334] [<ffffffff9117f7b8>] handle_fasteoi_irq+0xb8/0x330
[ 3.470594] [<ffffffff91039e31>] handle_irq+0xa1/0x370
[ 3.473848] [<ffffffff9221d6f3>] do_IRQ+0x83/0x1b0
[ 3.477151] [<ffffffff9221bad0>] ret_from_intr+0x0/0x19
[ 3.480444] [<ffffffff91c01564>] cpuidle_enter_state+0xe4/0x690
[ 3.483807] [<ffffffff91c01b67>] cpuidle_enter+0x17/0x20
[ 3.487099] [<ffffffff9114eef3>] do_idle+0x223/0x420
[ 3.490385] [<ffffffff9114f96c>] cpu_startup_entry+0x7c/0x90
[ 3.493706] [<ffffffff9220834c>] rest_init+0x15c/0x170
[ 3.496986] [<ffffffff938a974c>] start_kernel+0x74e/0x78f
[ 3.500247] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.503518] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.506790] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
[ 3.510045] IN-SOFTIRQ-W at:
[ 3.511680] [<ffffffff91164988>] __lock_acquire+0x668/0x18b0
[ 3.514923] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.518148] [<ffffffff9221a33c>] _raw_spin_lock_irqsave+0x4c/0x90
[ 3.521370] [<ffffffff91c2b8b8>] sdhci_tasklet_finish+0x28/0x290
[ 3.524614] [<ffffffff910c5308>] tasklet_action+0x1e8/0x650
[ 3.527872] [<ffffffff92220bb8>] __do_softirq+0x118/0xa7d
[ 3.531142] [<ffffffff910c59bb>] irq_exit+0x10b/0x170
[ 3.534460] [<ffffffff9221d6fc>] do_IRQ+0x8c/0x1b0
[ 3.537808] [<ffffffff9221bad0>] ret_from_intr+0x0/0x19
[ 3.541156] [<ffffffff91c01564>] cpuidle_enter_state+0xe4/0x690
[ 3.544519] [<ffffffff91c01b67>] cpuidle_enter+0x17/0x20
[ 3.547924] [<ffffffff9114eef3>] do_idle+0x223/0x420
[ 3.566208] [<ffffffff9114f96c>] cpu_startup_entry+0x7c/0x90
[ 3.569371] [<ffffffff9220834c>] rest_init+0x15c/0x170
[ 3.572589] [<ffffffff938a974c>] start_kernel+0x74e/0x78f
[ 3.575789] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.579007] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.582246] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
[ 3.585474] INITIAL USE at:
[ 3.587071] [<ffffffff91164526>] __lock_acquire+0x206/0x18b0
[ 3.590251] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.593438] [<ffffffff9221a33c>] _raw_spin_lock_irqsave+0x4c/0x90
[ 3.596618] [<ffffffff91c296f3>] sdhci_set_ios+0x43/0x6c0
[ 3.599774] [<ffffffff91c0a587>] mmc_set_initial_state+0x77/0xe0
[ 3.602980] [<ffffffff91c0a90d>] mmc_power_up+0x5d/0x1d0
[ 3.606193] [<ffffffff91c0bd26>] mmc_rescan+0x2d6/0x550
[ 3.609398] [<ffffffff910f3f3a>] process_one_work+0x38a/0xf40
[ 3.612619] [<ffffffff910f4e05>] worker_thread+0x315/0xc70
[ 3.615838] [<ffffffff910ff616>] kthread+0x176/0x250
[ 3.619044] [<ffffffff9221b39e>] ret_from_fork+0x2e/0x40
[ 3.622257] }
[ 3.623875] ... key at: [<ffffffff949d4190>] __key.36450+0x0/0x8
[ 3.625495] ... acquired at:
[ 3.627088] [<ffffffff91162c4e>] check_irq_usage+0x7e/0x230
[ 3.630257] [<ffffffff9116575a>] __lock_acquire+0x143a/0x18b0
[ 3.633441] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.636640] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.639832] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.643024] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.646205] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.649374] [<ffffffff91950e3c>] init_iova_domain+0xec/0x300
[ 3.652552] [<ffffffff9195d62c>] find_or_alloc_domain.constprop.34+0x8c/0x4f0
[ 3.655773] [<ffffffff9195fe11>] __get_valid_domain_for_dev+0x51/0x380
[ 3.658961] [<ffffffff9196093d>] intel_map_sg+0x28d/0x3a0
[ 3.662204] [<ffffffff91c29e62>] sdhci_pre_dma_transfer+0xf2/0x1c0
[ 3.665556] [<ffffffff91c2a51a>] sdhci_send_command+0x55a/0x10d0
[ 3.668817] [<ffffffff91c2b756>] sdhci_request+0xe6/0x220
[ 3.672185] [<ffffffff91c082cb>] __mmc_start_request+0xab/0x4a0
[ 3.675448] [<ffffffff91c08865>] mmc_start_request+0x1a5/0x2b0
[ 3.678723] [<ffffffff91c094c7>] mmc_wait_for_req+0xc7/0x1e0
[ 3.682009] [<ffffffff91c17dec>] mmc_app_send_scr+0x14c/0x200
[ 3.685429] [<ffffffff91c15ef2>] mmc_sd_setup_card+0x32/0x7f0
[ 3.688831] [<ffffffff91c16829>] mmc_sd_init_card+0x179/0xab0
[ 3.692232] [<ffffffff91c174aa>] mmc_attach_sd+0xea/0x200
[ 3.695746] [<ffffffff91c0bd86>] mmc_rescan+0x336/0x550
[ 3.699206] [<ffffffff910f3f3a>] process_one_work+0x38a/0xf40
[ 3.702748] [<ffffffff910f4e05>] worker_thread+0x315/0xc70
[ 3.706067] [<ffffffff910ff616>] kthread+0x176/0x250
[ 3.709612] [<ffffffff9221b39e>] ret_from_fork+0x2e/0x40
the dependencies between the lock to be acquired
[ 3.714749] and HARDIRQ-irq-unsafe lock:
[ 3.719802] -> (pcpu_alloc_mutex){+.+.+.} ops: 762 {
[ 3.721616] HARDIRQ-ON-W at:
[ 3.723250] [<ffffffff911649aa>] __lock_acquire+0x68a/0x18b0
[ 3.726700] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.729954] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.733392] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.736796] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.740221] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.743490] [<ffffffff913bcd61>] alloc_kmem_cache_cpus.isra.33+0x31/0x140
[ 3.746906] [<ffffffff913c2c9d>] __do_tune_cpucache+0x3d/0x220
[ 3.750278] [<ffffffff913c2eaa>] do_tune_cpucache+0x2a/0x180
[ 3.755475] [<ffffffff913c3099>] enable_cpucache+0x99/0x210
[ 3.758842] [<ffffffff93918a9b>] kmem_cache_init_late+0x85/0xf4
[ 3.762197] [<ffffffff938a94bb>] start_kernel+0x4bd/0x78f
[ 3.765565] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.768966] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.772350] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
[ 3.775741] SOFTIRQ-ON-W at:
[ 3.777426] [<ffffffff911649d7>] __lock_acquire+0x6b7/0x18b0
[ 3.780812] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.784135] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.787442] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.790698] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.793990] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.797269] [<ffffffff913bcd61>] alloc_kmem_cache_cpus.isra.33+0x31/0x140
[ 3.800569] [<ffffffff913c2c9d>] __do_tune_cpucache+0x3d/0x220
[ 3.803873] [<ffffffff913c2eaa>] do_tune_cpucache+0x2a/0x180
[ 3.807175] [<ffffffff913c3099>] enable_cpucache+0x99/0x210
[ 3.810481] [<ffffffff93918a9b>] kmem_cache_init_late+0x85/0xf4
[ 3.813781] [<ffffffff938a94bb>] start_kernel+0x4bd/0x78f
[ 3.817076] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.820379] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.823704] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
[ 3.827021] RECLAIM_FS-ON-W at:
[ 3.828677] [<ffffffff91163bd3>] mark_held_locks+0x93/0x160
[ 3.831433] usb 2-1.7: new high-speed USB device number 3 using ehci-pci
[ 3.833654] [<ffffffff9116706b>] lockdep_trace_alloc+0xcb/0x150
[ 3.836980] [<ffffffff9130f13a>] __alloc_pages_nodemask+0xba/0x540
[ 3.840337] [<ffffffff91352fa2>] pcpu_populate_chunk+0xe2/0x8f0
[ 3.843760] [<ffffffff913551bd>] pcpu_alloc+0x60d/0x900
[ 3.847152] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.850579] [<ffffffff910f9a10>] __alloc_workqueue_key+0x270/0x8c0
[ 3.854003] [<ffffffff938f8bb9>] cgroup_wq_init+0x3f/0x9a
[ 3.857432] [<ffffffff91000471>] do_one_initcall+0x61/0x250
[ 3.860873] [<ffffffff938a9c8f>] kernel_init_freeable+0x502/0x62f
[ 3.864309] [<ffffffff9220836f>] kernel_init+0xf/0x120
[ 3.867753] [<ffffffff9221b39e>] ret_from_fork+0x2e/0x40
[ 3.871177] INITIAL USE at:
[ 3.872880] [<ffffffff91164526>] __lock_acquire+0x206/0x18b0
[ 3.876260] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.879646] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.882982] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.886318] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.889651] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.892969] [<ffffffff913bcd61>] alloc_kmem_cache_cpus.isra.33+0x31/0x140
[ 3.896313] [<ffffffff92209703>] setup_cpu_cache+0x33/0x270
[ 3.899652] [<ffffffff913c3857>] __kmem_cache_create+0x247/0x300
[ 3.902998] [<ffffffff9390fb09>] create_boot_cache+0x19a/0x1fb
[ 3.906362] [<ffffffff93918943>] kmem_cache_init+0x111/0x1e4
[ 3.916826] [<ffffffff938a9322>] start_kernel+0x324/0x78f
[ 3.920181] [<ffffffff938a73b8>] x86_64_start_reservations+0x4f/0x70
[ 3.923580] [<ffffffff938a7731>] x86_64_start_kernel+0x358/0x39f
[ 3.926944] [<ffffffff910001c4>] verify_cpu+0x0/0xf1
[ 3.930292] }
[ 3.931955] ... key at: [<ffffffff92ac0d10>] pcpu_alloc_mutex+0x70/0xa0
[ 3.933650] ... acquired at:
[ 3.935323] [<ffffffff91162c4e>] check_irq_usage+0x7e/0x230
[ 3.938658] [<ffffffff9116575a>] __lock_acquire+0x143a/0x18b0
[ 3.941982] [<ffffffff911661c9>] lock_acquire+0x119/0x2d0
[ 3.945303] [<ffffffff92210638>] __mutex_lock+0x88/0x17c0
[ 3.948616] [<ffffffff92211d8b>] mutex_lock_nested+0x1b/0x20
[ 3.951921] [<ffffffff91355086>] pcpu_alloc+0x4d6/0x900
[ 3.955241] [<ffffffff913554e5>] __alloc_percpu+0x15/0x20
[ 3.958570] [<ffffffff91950e3c>] init_iova_domain+0xec/0x300
[ 3.961878] [<ffffffff9195d62c>] find_or_alloc_domain.constprop.34+0x8c/0x4f0
[ 3.965156] [<ffffffff9195fe11>] __get_valid_domain_for_dev+0x51/0x380
[ 3.968490] [<ffffffff9196093d>] intel_map_sg+0x28d/0x3a0
[ 3.971821] [<ffffffff91c29e62>] sdhci_pre_dma_transfer+0xf2/0x1c0
[ 3.974441] usb 2-1.8: new full-speed USB device number 4 using ehci-pci
[ 3.976866] [<ffffffff91c2a51a>] sdhci_send_command+0x55a/0x10d0
[ 3.980175] [<ffffffff91c2b756>] sdhci_request+0xe6/0x220
[ 3.983543] [<ffffffff91c082cb>] __mmc_start_request+0xab/0x4a0
[ 3.986903] [<ffffffff91c08865>] mmc_start_request+0x1a5/0x2b0
[ 3.990288] [<ffffffff91c094c7>] mmc_wait_for_req+0xc7/0x1e0
[ 3.993637] [<ffffffff91c17dec>] mmc_app_send_scr+0x14c/0x200
[ 3.997010] [<ffffffff91c15ef2>] mmc_sd_setup_card+0x32/0x7f0
[ 4.000412] [<ffffffff91c16829>] mmc_sd_init_card+0x179/0xab0
[ 4.003825] [<ffffffff91c174aa>] mmc_attach_sd+0xea/0x200
[ 4.007231] [<ffffffff91c0bd86>] mmc_rescan+0x336/0x550
[ 4.010640] [<ffffffff910f3f3a>] process_one_work+0x38a/0xf40
[ 4.014046] [<ffffffff910f4e05>] worker_thread+0x315/0xc70
[ 4.017484] [<ffffffff910ff616>] kthread+0x176/0x250
[ 4.020867] [<ffffffff9221b39e>] ret_from_fork+0x2e/0x40
stack backtrace:
[ 4.029156] CPU: 1 PID: 34 Comm: kworker/1:1 Tainted: G W 4.10.0-rc6-next-20170130-dirty #379
[ 4.030866] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A18 10/13/2016
[ 4.032570] Workqueue: events_freezable mmc_rescan
[ 4.034264] Call Trace:
[ 4.035943] dump_stack+0x7b/0xc8
[ 4.037621] check_usage+0x4f3/0x570
[ 4.039279] ? native_sched_clock+0xd5/0x200
[ 4.040970] check_irq_usage+0x7e/0x230
[ 4.042652] __lock_acquire+0x143a/0x18b0
[ 4.044317] ? dump_stack+0x9e/0xc8
[ 4.045976] lock_acquire+0x119/0x2d0
[ 4.047624] ? pcpu_alloc+0x4d6/0x900
[ 4.049248] ? pcpu_alloc+0x4d6/0x900
[ 4.050857] __mutex_lock+0x88/0x17c0
[ 4.052449] ? pcpu_alloc+0x4d6/0x900
[ 4.054033] ? __alloc_pages_nodemask+0x36c/0x540
[ 4.055637] ? pcpu_alloc+0x4d6/0x900
[ 4.057221] ? _raw_spin_unlock+0x69/0x80
[ 4.058788] ? cache_alloc_refill+0x90b/0x1310
[ 4.060368] mutex_lock_nested+0x1b/0x20
[ 4.061923] pcpu_alloc+0x4d6/0x900
[ 4.063493] ? debug_check_no_locks_freed+0xe1/0x200
[ 4.065049] __alloc_percpu+0x15/0x20
[ 4.066612] init_iova_domain+0xec/0x300
[ 4.068151] find_or_alloc_domain.constprop.34+0x8c/0x4f0
[ 4.069704] ? _raw_spin_lock_irqsave+0x78/0x90
[ 4.071260] __get_valid_domain_for_dev+0x51/0x380
[ 4.072807] ? do_raw_spin_unlock+0xdd/0x1d0
[ 4.074356] intel_map_sg+0x28d/0x3a0
[ 4.075886] ? mod_timer+0x2a7/0xb30
[ 4.086650] sdhci_pre_dma_transfer+0xf2/0x1c0
[ 4.088222] sdhci_send_command+0x55a/0x10d0
[ 4.089703] ? sdhci_request+0x55/0x220
[ 4.091164] sdhci_request+0xe6/0x220
[ 4.092622] __mmc_start_request+0xab/0x4a0
[ 4.094068] ? led_trigger_event+0x6f/0x90
[ 4.095511] mmc_start_request+0x1a5/0x2b0
[ 4.096934] mmc_wait_for_req+0xc7/0x1e0
[ 4.098342] mmc_app_send_scr+0x14c/0x200
[ 4.099751] ? mmc_align_data_size+0x20/0x20
[ 4.101142] mmc_sd_setup_card+0x32/0x7f0
[ 4.102536] mmc_sd_init_card+0x179/0xab0
[ 4.103910] ? _raw_spin_unlock_irqrestore+0x78/0xa0
[ 4.105287] mmc_attach_sd+0xea/0x200
[ 4.106658] mmc_rescan+0x336/0x550
[ 4.108010] process_one_work+0x38a/0xf40
[ 4.109357] ? process_one_work+0x2f3/0xf40
[ 4.110707] worker_thread+0x315/0xc70
[ 4.112040] kthread+0x176/0x250
[ 4.113359] ? process_one_work+0xf40/0xf40
[ 4.114683] ? kthread_create_on_node+0x60/0x60
[ 4.115993] ret_from_fork+0x2e/0x40
[ 4.118134] tsc: Refined TSC clocksource calibration: 2691.258 MHz
[ 4.119471] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x26cafc29fa8, max_idle_ns: 440795270837 ns
[ 4.123247] mmc0: new high speed SDHC card at address aaaa
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