INFO: task kworker/1:0:25 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-ga940d9a43e62-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:24432 pid:25 tgid:25 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
usb_kill_urb+0x1c9/0x300 drivers/usb/core/urb.c:713
usb_start_wait_urb+0x1b0/0x520 drivers/usb/core/message.c:65
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x2b1/0x4c0 drivers/usb/core/message.c:154
get_bMaxPacketSize0 drivers/usb/core/hub.c:4805 [inline]
hub_port_init+0x1156/0x2670 drivers/usb/core/hub.c:5066
hub_port_connect drivers/usb/core/hub.c:5450 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2962/0x5150 drivers/usb/core/hub.c:5903
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x870/0xd30 kernel/workqueue.c:3393
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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:
2 locks held by kworker/u8:0/11:
5 locks held by kworker/1:0/25:
#0: ffff88801e2e6148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801e2e6148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900001f7d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900001f7d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff888029525190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#2: ffff888029525190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5150 drivers/usb/core/hub.c:5849
#3: ffff888029629518 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3206 [inline]
#3: ffff888029629518 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5418 [inline]
#3: ffff888029629518 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
#3: ffff888029629518 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
#3: ffff888029629518 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x25b9/0x5150 drivers/usb/core/hub.c:5903
#4: ffff88802236c968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5419 [inline]
#4: ffff88802236c968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
#4: ffff88802236c968 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5821 [inline]
#4: ffff88802236c968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x25f7/0x5150 drivers/usb/core/hub.c:5903
1 lock held by khungtaskd/30:
#0: ffffffff8e938c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938c60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
2 locks held by getty/4981:
#0: ffff888034a720a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-ga940d9a43e62-dirty #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+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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: 4668 Comm: klogd Not tainted 6.11.0-syzkaller-ga940d9a43e62-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:fpregs_restore_userregs arch/x86/kernel/fpu/context.h:74 [inline]
RIP: 0010:switch_fpu_return+0xd6/0x180 arch/x86/kernel/fpu/core.c:787
Code: c8 5d 00 eb 4b e8 da c8 5d 00 49 81 c7 50 19 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 bd 0d c5 00 49 8b 3f ff 0c 06 00 e8 30 cb ff ff 48 89 ef e8 78 05 00 00 48 89 e8 48
RSP: 0018:ffffc90003707ea0 EFLAGS: 00000046
RAX: 1ffff1100c1d46ea RBX: ffff888060ea1e00 RCX: ffff888060ea1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888060ea3780
RBP: ffff888060ea3740 R08: ffffffff8136610c R09: 1ffff1100c1d43c0
R10: dffffc0000000000 R11: ffffed100c1d43c1 R12: ffff888060ea1e00
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888060ea3750
FS: 00007f1238006380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056473e45c028 CR3: 0000000030efe000 CR4: 0000000000350ef0
Call Trace:
arch_exit_to_user_mode_prepare arch/x86/include/asm/entry-common.h:58 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x283/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1238167fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc74abbe88 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: 00000000000003e2 RBX: 00007f12383064a0 RCX: 00007f1238167fa7
RDX: 00000000000003ff RSI: 00007f12383064a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 7111a177d664ea18
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f12383064a0
R13: 00007f12382f6212 R14: 00007f1238306550 R15: 00007f1238306550