INFO: task kworker/0:0:8 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:19712 pid:8 tgid:8 ppid:2 flags:0x00004000
Workqueue: events_freezable usb_stor_scan_dwork
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xcda/0x2f80 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
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:4032
blk_mq_add_queue_tag_set block/blk-mq.c:4066 [inline]
blk_mq_init_allocated_queue+0xe1c/0x1280 block/blk-mq.c:4340
blk_mq_alloc_queue+0x1f8/0x2f0 block/blk-mq.c:4155
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+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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/0:3:4942 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:21872 pid:4942 tgid:4942 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xcda/0x2f80 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_work+0x776/0xc30 kernel/workqueue.c:4212
__cancel_work_sync+0x10c/0x130 kernel/workqueue.c:4332
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:568 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:560
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22f/0x420 drivers/base/bus.c:574
device_del+0x396/0x9f0 drivers/base/core.c:3871
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+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
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:
4 locks held by kworker/0:0/8:
#0: ffff888100081548 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000008fd80 ((work_completion)(&(&us->scan_dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2:
ffff888118f600e0 (&shost->scan_mutex){+.+.}-{3:3}, at: scsi_scan_host_selected+0x160/0x370 drivers/scsi/scsi_scan.c:1866
#3: ffff888118f602d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_add_queue_tag_set block/blk-mq.c:4057 [inline]
#3: ffff888118f602d0 (&set->tag_list_lock){+.+.}-{3:3}, at: blk_mq_init_allocated_queue+0x7d9/0x1280 block/blk-mq.c:4340
4 locks held by kworker/1:0/24:
1 lock held by khungtaskd/30:
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff88ebb660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
6 locks held by kworker/0:2/42:
4 locks held by kworker/u8:5/765:
#0: ffff888100abf948 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc900019bfd80 ((work_completion)(&entry->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff8881243cc378 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff8881243cc378 (&dev->mutex){....}-{3:3}, at: __device_attach_async_helper+0x84/0x290 drivers/base/dd.c:972
#3: ffff888101f04fb0 (&q->limits_lock
){+.+.}-{3:3}, at: queue_limits_start_update include/linux/blkdev.h:926 [inline]
){+.+.}-{3:3}, at: sd_revalidate_disk.isra.0+0x27a/0xa420 drivers/scsi/sd.c:3728
7 locks held by kworker/1:2/1763:
2 locks held by getty/2604:
#0: ffff888108ea70a0 (&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+0xfc8/0x1490 drivers/tty/n_tty.c:2211
5 locks held by kworker/0:3/4942:
#0: ffff8881062fad48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc9000ee17d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
#2: ffff888109bac190 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3:
ffff888116409190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff8881072ab160
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
(&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
(&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
2 locks held by kworker/u8:0/13186:
#0: ffff888118e51148 ((wq_completion)scsi_tmf_1
){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
#1: ffffc90003fffd80
((work_completion)(&(&cmd->abort_work)->work)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
4 locks held by udevd/15251:
#0: ffff8881173680a0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1: ffff8881067e7088 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88811da75008 (kn->active#21){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3: ffff88810b79b190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1014 [inline]
#3: ffff88810b79b190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by usb-storage/17886:
#0: ffff888118f60d28 (&us_interface_key[i]){+.+.}-{3:3}, at: usb_stor_control_thread+0xd6/0xac0 drivers/usb/storage/usb.c:394
1 lock held by syz.0.3301/19109:
#0: ffffffff88ec6df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
1 lock held by syz.1.3305/19123:
#0: ffffffff88ec6df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:328
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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: 2535 Comm: klogd Not tainted 6.11.0-rc7-syzkaller-00152-g68d4209158f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5500 [inline]
RIP: 0010:lock_is_held_type+0xb0/0x150 kernel/locking/lockdep.c:5831
Code: 00 41 83 c7 01 45 3b bc 24 90 0a 00 00 0f 8d 80 00 00 00 49 63 c7 48 89 ee 48 8d 04 80 49 8d 5c c5 00 48 89 df e8 80 fe ff ff <85> c0 74 d3 41 83 fe ff 41 bd 01 00 00 00 74 13 31 c0 f6 43 22 03
RSP: 0018:ffffc9000167f880 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff888115976258 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff88ebb660 RDI: ffff888115976258
RBP: ffffffff88ebb660 R08: 0000000000000000 R09: ffffed10201dad23
R10: ffff888100ed691f R11: 0000000000000000 R12: ffff8881159757c0
R13: ffff888115976258 R14: 00000000ffffffff R15: 0000000000000000
FS: 00007eff00817380(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2df87c CR3: 0000000115a5c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
select_idle_cpu kernel/sched/fair.c:7414 [inline]
select_idle_sibling kernel/sched/fair.c:7649 [inline]
select_task_rq_fair+0x2362/0x3eb0 kernel/sched/fair.c:8249
select_task_rq kernel/sched/core.c:3437 [inline]
try_to_wake_up+0x3db/0x10b0 kernel/sched/core.c:4152
autoremove_wake_function+0x16/0x150 kernel/sched/wait.c:384
receiver_wake_function+0x53/0x80 net/core/datagram.c:82
__wake_up_common+0x131/0x1e0 kernel/sched/wait.c:89
__wake_up_common_lock kernel/sched/wait.c:106 [inline]
__wake_up_sync_key+0x36/0x50 kernel/sched/wait.c:173
sock_def_readable+0x160/0x610 net/core/sock.c:3374
unix_dgram_sendmsg+0xf3d/0x1920 net/unix/af_unix.c:2170
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x47f/0x4e0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2212
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: 0033:0x7eff009799b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd97a4ecf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007eff009799b5
RDX: 000000000000004d RSI: 0000561143b9a8d0 RDI: 0000000000000003
RBP: 0000561143b8e2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007eff00b07212 R14: 00007ffd97a4edf8 R15: 0000000000000000