INFO: task kworker/0:6:21142 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:27496 pid:21142 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
usb_kill_urb.part.0+0x19a/0x220 drivers/usb/core/urb.c:720
usb_kill_urb+0x7f/0xa0 drivers/usb/core/urb.c:715
usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
hub_port_init+0x82e/0x2f10 drivers/usb/core/hub.c:4829
hub_port_connect drivers/usb/core/hub.c:5280 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x2190/0x4330 drivers/usb/core/hub.c:5716
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b980ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6461
3 locks held by khugepaged/33:
1 lock held by in:imklog/6175:
3 locks held by kworker/u4:8/9008:
5 locks held by kworker/0:6/21142:
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff8880129e2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000bef7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffff88801eed5220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88801eed5220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662
#3: ffff888147e9f5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline]
#3: ffff888147e9f5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5279 [inline]
#3: ffff888147e9f5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
#3: ffff888147e9f5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5634 [inline]
#3: ffff888147e9f5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5716
#4: ffff88801ef48b68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2f10 drivers/usb/core/hub.c:4703
1 lock held by syz-executor.2/3308:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 32594 Comm: kworker/0:0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: 0x0 (events)
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:688 [inline]
RIP: 0010:cpuacct_charge+0x76/0x330 kernel/sched/cpuacct.c:348
Code: 48 8b 43 20 41 bd 08 00 00 00 48 05 58 7f 00 00 0f 85 2c 01 00 00 e8 a9 8e 08 00 31 d2 45 31 c9 45 31 c0 31 f6 68 82 cb 59 81 02 00 00 00 48 c7 c7 a0 0e 98 8b e8 69 48 02 00 e8 14 92 08 00
RSP: 0018:ffffc9001d74fbc0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffff8880746320c0 RCX: 1ffff92003ae9ffc
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880746324fc
RBP: ffff8880b9c39bc0 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1adf0a2 R11: 0000000001e6eaf6 R12: 000000000020c014
R13: 0000000000000008 R14: ffff888074632190 R15: ffff8880746320c0
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f236dfe0000 CR3: 000000001e728000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cgroup_account_cputime include/linux/cgroup.h:792 [inline]
update_curr+0x37b/0x900 kernel/sched/fair.c:877
dequeue_entity+0x23/0xfd0 kernel/sched/fair.c:4337
dequeue_task_fair+0x238/0xea0 kernel/sched/fair.c:5688
deactivate_task kernel/sched/core.c:2033 [inline]
__schedule+0xbe1/0x4940 kernel/sched/core.c:6204
schedule+0xd2/0x260 kernel/sched/core.c:6323
worker_thread+0x15c/0x11f0 kernel/workqueue.c:2466
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 8b 43 20 mov 0x20(%rbx),%rax
4: 41 bd 08 00 00 00 mov $0x8,%r13d
a: 48 05 58 7f 00 00 add $0x7f58,%rax
10: 0f 85 2c 01 00 00 jne 0x142
16: e8 a9 8e 08 00 callq 0x88ec4
1b: 31 d2 xor %edx,%edx
1d: 45 31 c9 xor %r9d,%r9d
20: 45 31 c0 xor %r8d,%r8d
23: 31 f6 xor %esi,%esi
25: 68 82 cb 59 81 pushq $0xffffffff8159cb82
* 2a: b9 02 00 00 00 mov $0x2,%ecx <-- trapping instruction
2f: 48 c7 c7 a0 0e 98 8b mov $0xffffffff8b980ea0,%rdi
36: e8 69 48 02 00 callq 0x248a4
3b: e8 14 92 08 00 callq 0x89254