INFO: task kworker/1:5:4950 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5 state:D stack:21296 pid:4950 tgid:4950 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
__flush_work+0x776/0xc30 kernel/workqueue.c:4217
__cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4337
quiesce_and_remove_host drivers/usb/storage/usb.c:939 [inline]
usb_stor_disconnect+0xc5/0x270 drivers/usb/storage/usb.c:1178
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3864
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task kworker/1:2:11429 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D stack:20912 pid:11429 tgid:11429 ppid:2 flags:0x00004000
Workqueue: events_freezable usb_stor_scan_dwork
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
blk_mq_freeze_queue_wait+0x146/0x190 block/blk-mq.c:139
blk_freeze_queue block/blk-mq.c:166 [inline]
blk_mq_freeze_queue block/blk-mq.c:175 [inline]
blk_mq_update_tag_set_shared+0xba/0x160 block/blk-mq.c:4035
blk_mq_add_queue_tag_set block/blk-mq.c:4069 [inline]
blk_mq_init_allocated_queue+0xd59/0x11f0 block/blk-mq.c:4343
blk_mq_alloc_queue+0x1f8/0x2f0 block/blk-mq.c:4158
scsi_alloc_sdev+0x897/0xd90 drivers/scsi/scsi_scan.c:337
scsi_probe_and_add_lun+0x525/0x7b0 drivers/scsi/scsi_scan.c:1210
scsi_sequential_lun_scan drivers/scsi/scsi_scan.c:1393 [inline]
__scsi_scan_target+0x42c/0x4e0 drivers/scsi/scsi_scan.c:1764
scsi_scan_channel drivers/scsi/scsi_scan.c:1845 [inline]
scsi_scan_channel+0x149/0x1e0 drivers/scsi/scsi_scan.c:1821
scsi_scan_host_selected+0x2ae/0x370 drivers/scsi/scsi_scan.c:1874
do_scsi_scan_host+0x1ef/0x260 drivers/scsi/scsi_scan.c:2013
scsi_scan_host drivers/scsi/scsi_scan.c:2043 [inline]
scsi_scan_host+0x3a7/0x440 drivers/scsi/scsi_scan.c:2031
usb_stor_scan_dwork+0xad/0x280 drivers/usb/storage/usb.c:998
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
4 locks held by kworker/u8:6/1130:
#0: ffff888100abf948 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900021efd80 ((work_completion)(&entry->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8881263c2378 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8881263c2378 (&dev->mutex){....}-{3:3}, at: __device_attach_async_helper+0x84/0x290 drivers/base/dd.c:973
#3: ffff888105f721e8 (&q->limits_lock){+.+.}-{3:3}
, at: queue_limits_start_update include/linux/blkdev.h:926 [inline]
, at: sd_revalidate_disk.isra.0+0x27a/0xa420 drivers/scsi/sd.c:3727
2 locks held by getty/2606:
#0: ffff88810f7ac0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
8 locks held by kworker/0:4/4931:
#0: ffff8881062c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900023cfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888109b8f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888109b8f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888109335190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888109335190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88812e63b160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88812e63b160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88812e63b160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
#5: ffffffff8a1a1d68 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_unregister+0x13e/0xc10 net/wireless/core.c:1100
#6: ffff888128b20768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#6: ffff888128b20768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_unregister+0x148/0xc10 net/wireless/core.c:1101
#7: ffffffff88ec6a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
5 locks held by kworker/1:5/4950:
#0: ffff8881062c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000241fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810276e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88810276e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888129194190 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff8881375c0160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff8881375c0160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff8881375c0160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
4 locks held by kworker/1:2/11429:
#0: ffff888100081548 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000181fd80 ((work_completion)(&(&us->scan_dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88812aed40e0 (&shost->scan_mutex){+.+.}-{3:3}, at: scsi_scan_host_selected+0x160/0x370 drivers/scsi/scsi_scan.c:1866
#3: ffff88812aed42d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_add_queue_tag_set block/blk-mq.c:4060 [inline]
#3: ffff88812aed42d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_init_allocated_queue+0x7bc/0x11f0 block/blk-mq.c:4343
2 locks held by kworker/u8:2/29770:
#0: ffff888111fb4948 ((wq_completion)scsi_tmf_1){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900108dfd80 ((work_completion)(&(&cmd->abort_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
1 lock held by usb-storage/32501:
#0: ffff88812aed4d08 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_control_thread+0xd6/0xac0 drivers/usb/storage/usb.c:394
1 lock held by syz.0.6580/1209:
#0: ffffffff88ec6a78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
1 lock held by rm/1228:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1230 Comm: dhcpcd-run-hook Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:mark_lock+0x124/0xc60 kernel/locking/lockdep.c:4746
Code: c7 40 08 00 00 00 00 48 c7 40 10 00 00 00 00 48 8b 84 24 08 01 00 00 65 48 2b 04 25 28 00 00 00 0f 85 56 09 00 00 48 8d 65 d8 <89> d0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8d 7e 22 48
RSP: 0018:ffffc900036379f8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888104fe27d8 RCX: 1ffffffff1f585ea
RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffff8fac2f50
RBP: ffffc90003637a20 R08: 0000000000000000 R09: fffffbfff1f55dba
R10: ffffffff8faaedd7 R11: 0000000000000000 R12: ffff888104fe1d40
R13: 0000000000000040 R14: 0000000000000006 R15: 1ffff920006c6f22
FS: 00007f8463072380(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f846317adc3 CR3: 000000011d6c0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4638 [inline]
__lock_acquire+0x8ee/0x3ce0 kernel/locking/lockdep.c:5156
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825
down_write_killable+0x96/0x250 kernel/locking/rwsem.c:1588
mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
do_mprotect_pkey+0x23b/0xd00 mm/mprotect.c:740
__do_sys_mprotect mm/mprotect.c:859 [inline]
__se_sys_mprotect mm/mprotect.c:856 [inline]
__x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:856
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8463396bb7
Code: 00 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d b9 46 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 99 46 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffd2b178178 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f84633735c0 RCX: 00007f8463396bb7
RDX: 0000000000000001 RSI: 0000000000004000 RDI: 00007f846329d000
RBP: 00007ffd2b178290 R08: 00007ffd2b170000 R09: 00007f84633aaab0
R10: 00007f8463103ab8 R11: 0000000000000206 R12: 00007f84633735c0
R13: 00007f846339eeda R14: 00007f84632a0bf8 R15: 00007f84632a0b70