INFO: task kworker/0:5:8150 blocked for more than 150 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:22576 pid: 8150 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
usb_kill_urb+0x1d5/0x310 drivers/usb/core/urb.c:720
usb_start_wait_urb+0x265/0x530 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x2a5/0x4b0 drivers/usb/core/message.c:153
hub_port_init+0x9f1/0x2df0 drivers/usb/core/hub.c:4829
hub_port_connect+0xcf8/0x27d0 drivers/usb/core/hub.c:5280
hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5488
port_event+0xb67/0x1220 drivers/usb/core/hub.c:5634
hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5716
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
3 locks held by kworker/u4:1/10:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d900 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6139:
5 locks held by kworker/0:5/8150:
#0: ffff88801258ad38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000b47fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffff888147e1a220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff888147e1a220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5662
#3: ffff888147e1e5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline]
#3: ffff888147e1e5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0xce1/0x27d0 drivers/usb/core/hub.c:5279
#4: ffff888147e39168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1ef/0x2df0 drivers/usb/core/hub.c:4703
2 locks held by syz-executor.4/16198:
2 locks held by syz-executor.3/17486:
1 lock held by syz-executor.3/17540:
=============================================
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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 953 Comm: kworker/u4:4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__add_wait_queue include/linux/wait.h:176 [inline]
RIP: 0010:prepare_to_wait_event+0x127/0x560 kernel/sched/wait.c:321
Code: 04 00 00 49 8d 6e 40 41 f6 07 01 0f 85 36 02 00 00 48 89 e8 48 c1 e8 03 80 3c 18 00 74 08 48 89 ef e8 2d 6f 6d 00 4c 8b 7d 00 <4c> 39 fd 74 2b 4d 8d 6f e8 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00
RSP: 0018:ffffc9000489fad0 EFLAGS: 00000046
RAX: 1ffffffff197ee88 RBX: dffffc0000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000489f9a0
RBP: ffffffff8cbf7440 R08: dffffc0000000000 R09: 0000000000000003
R10: fffff52000913f35 R11: 0000000000000004 R12: dffffc0000000000
R13: ffffc9000489fb78 R14: ffffffff8cbf7400 R15: ffffffff8cbf7440
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000140 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
toggle_allocation_gate+0x1ac/0x460 mm/kfence/core.c:739
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 04 00 add $0x0,%al
2: 00 49 8d add %cl,-0x73(%rcx)
5: 6e outsb %ds:(%rsi),(%dx)
6: 40 rex
7: 41 f6 07 01 testb $0x1,(%r15)
b: 0f 85 36 02 00 00 jne 0x247
11: 48 89 e8 mov %rbp,%rax
14: 48 c1 e8 03 shr $0x3,%rax
18: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
1c: 74 08 je 0x26
1e: 48 89 ef mov %rbp,%rdi
21: e8 2d 6f 6d 00 callq 0x6d6f53
26: 4c 8b 7d 00 mov 0x0(%rbp),%r15
* 2a: 4c 39 fd cmp %r15,%rbp <-- trapping instruction
2d: 74 2b je 0x5a
2f: 4d 8d 6f e8 lea -0x18(%r15),%r13
33: 4c 89 e8 mov %r13,%rax
36: 48 c1 e8 03 shr $0x3,%rax
3a: 48 rex.W
3b: b9 00 00 00 00 mov $0x0,%ecx