INFO: task kworker/1:2:2509 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:21632 pid:2509 tgid:2509 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
INFO: task kworker/0:1:10183 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/0:1 state:D stack:21184 pid:10183 tgid:10183 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
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
5 locks held by kworker/1:1/36:
4 locks held by kworker/1:2/2509:
#0: ffff888100081548 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90004c2fd80 ((work_completion)(&(&us->scan_dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810eb780e0 (&shost->scan_mutex){+.+.}-{3:3}, at: scsi_scan_host_selected+0x160/0x370 drivers/scsi/scsi_scan.c:1866
#3: ffff88810eb782d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_add_queue_tag_set block/blk-mq.c:4060 [inline]
#3: ffff88810eb782d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_init_allocated_queue+0x7bc/0x11f0 block/blk-mq.c:4343
2 locks held by syslogd/2531:
2 locks held by getty/2607:
#0: ffff888113db10a0 (
&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
6 locks held by kworker/1:3/4930:
2 locks held by kworker/u8:0/7560:
#0: ffff888105371148 ((wq_completion)scsi_tmf_1){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1:
ffffc900100e7d80
((work_completion)(&(&cmd->abort_work)->work)
){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
4 locks held by kworker/u8:2/7907:
#0: ffff888100abf948 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9001055fd80 ((work_completion)(&entry->work)
){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888122e80378 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888122e80378 (&dev->mutex){....}-{3:3}, at: __device_attach_async_helper+0x84/0x290 drivers/base/dd.c:973
#3: ffff888105398f98 (&q->limits_lock){+.+.}-{3:3}, at: queue_limits_start_update include/linux/blkdev.h:926 [inline]
#3: ffff888105398f98 (&q->limits_lock){+.+.}-{3:3}, at: sd_revalidate_disk.isra.0+0x27a/0xa420 drivers/scsi/sd.c:3727
5 locks held by kworker/0:1/10183:
#0: ffff8881062c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900102d7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8881093fd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8881093fd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff8881063ba190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff8881063ba190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff8881063bd160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff8881063bd160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff8881063bd160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
1 lock held by usb-storage/15159:
#0: ffff88810eb78d08
(&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_control_thread+0xd6/0xac0 drivers/usb/storage/usb.c:394
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2641 Comm: syz-executor 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:lookup_object_or_alloc lib/debugobjects.c:567 [inline]
RIP: 0010:__debug_object_init+0x2f4/0x480 lib/debugobjects.c:633
Code: 74 7e be 03 00 00 00 4c 89 ef ff d0 0f 1f 00 84 c0 74 6d 83 05 9c 44 ff 07 01 eb 64 3b 05 9c 44 ff 07 7e 06 89 05 94 44 ff 07 <8b> 8d 1c ff ff ff 45 31 c0 4c 89 ef 4c 89 8d 28 ff ff ff 48 8b 95
RSP: 0018:ffffc90001a8fc40 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8133c13d
RDX: 1ffffffff26bec48 RSI: ffffffff935f6228 RDI: ffffc90001a8fbb0
RBP: ffffc90001a8fd30 R08: 0000000000000001 R09: 0000000000000a07
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff92000351f8c
R13: ffffc90001a8fd78 R14: 00000000000fd008 R15: ffffffff935f6230
FS: 000055556950f500(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556efe44a8 CR3: 000000011247e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:448 [inline]
hrtimer_nanosleep+0xa0/0x370 kernel/time/hrtimer.c:2078
common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1365
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1411 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1388 [inline]
__x64_sys_clock_nanosleep+0x344/0x4a0 kernel/time/posix-timers.c:1388
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: 0033:0x7f00275300a3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 9e c4 15 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007fff3ce158b8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f00275300a3
RDX: 00007fff3ce158d0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000000358a2 R09: 00007f002737a080
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff3ce15d00
R13: 0000000000000004 R14: 00007fff3ce1590c R15: 00007fff3ce159a0