INFO: task kworker/0:6:8348 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:24600 pid: 8348 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
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
usb_get_descriptor+0xb5/0x3c0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x8a/0xe0 drivers/usb/core/message.c:1071
hub_port_init+0x106f/0x2e60 drivers/usb/core/hub.c:4922
hub_port_connect+0xc30/0x2910 drivers/usb/core/hub.c:5282
hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5497
port_event+0xb67/0x1220 drivers/usb/core/hub.c:5643
hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5725
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/u4:0/8:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6223:
#0: ffff8880230c0870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:994
2 locks held by kworker/1:8/8180:
#0: ffff888011466538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000ed07d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
5 locks held by kworker/0:6/8348:
#0: ffff888142bacd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000f1e7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffff88814768c220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88814768c220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5671
#3: ffff8881478705c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline]
#3: ffff8881478705c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4f4/0x2910 drivers/usb/core/hub.c:5249
#4: ffff8881479b8968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x51d/0x2910 drivers/usb/core/hub.c:5250
3 locks held by kworker/1:0/23644:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc9000cfcfd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffffffff8db81248 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
5 locks held by kworker/u4:9/3517:
#0: ffff888015fb3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc900196e7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffffffff8db75470 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:555
#3: ffffffff8db81248 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock_unregistering net/core/dev.c:11563 [inline]
#3: ffffffff8db81248 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x189/0x4b0 net/core/dev.c:11601
#4: ffffffff8cb223a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#4: ffffffff8cb223a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x277/0x740 kernel/rcu/tree_exp.h:836
3 locks held by kworker/0:2/7078:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc90019927d20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffffffff8db81248 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc3-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:111
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2967 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_static_branch include/trace/events/lock.h:13 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:trace_lock_acquire+0x1/0x190 include/trace/events/lock.h:13
Code: 07 80 c1 03 38 c1 0f 8c 22 ff ff ff 48 8b 7c 24 20 e8 b3 6e 6a 00 e9 13 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 <41> 57 41 56 41 55 41 54 53 50 0f 1f 44 00 00 65 8b 05 91 27 9c 7e
RSP: 0018:ffffc90001ccf5c8 EFLAGS: 00000a02
RAX: f2f2f200f1f1f1f1 RBX: ffffffff8cb1db40 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8cb1db40
RBP: ffffc90001ccf738 R08: 0000000000000000 R09: 0000000000000000
R10: fffffbfff1bfd176 R11: 0000000000000000 R12: 0000000000000002
R13: 1ffff92000399ec4 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f540c4558c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5409a16008 CR3: 000000001e09d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:688 [inline]
dput+0x56/0x6e0 fs/dcache.c:874
step_into+0x409/0x1f90 fs/namei.c:1809
walk_component+0x33a/0x790 fs/namei.c:1976
link_path_walk+0x697/0xd00
path_parentat fs/namei.c:2496 [inline]
filename_parentat+0x27c/0x7b0 fs/namei.c:2519
filename_create+0xf4/0x4e0 fs/namei.c:3637
do_mkdirat+0xae/0x530 fs/namei.c:3898
__do_sys_mkdir fs/namei.c:3929 [inline]
__se_sys_mkdir fs/namei.c:3927 [inline]
__x64_sys_mkdir+0x6a/0x80 fs/namei.c:3927
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f540b710687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007fff5a68bae8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fff5a68eb50 RCX: 00007f540b710687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 000055d41eb608a0
RBP: 00007fff5a68bb20 R08: 000055d41e6173e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 000055d41eb608a0 R15: 00007fff5a68c160
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 80 c1 03 add $0x3,%cl
3: 38 c1 cmp %al,%cl
5: 0f 8c 22 ff ff ff jl 0xffffff2d
b: 48 8b 7c 24 20 mov 0x20(%rsp),%rdi
10: e8 b3 6e 6a 00 callq 0x6a6ec8
15: e9 13 ff ff ff jmpq 0xffffff2d
1a: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
21: 00 00 00
24: 0f 1f 40 00 nopl 0x0(%rax)
28: 55 push %rbp
* 29: 41 57 push %r15 <-- trapping instruction
2b: 41 56 push %r14
2d: 41 55 push %r13
2f: 41 54 push %r12
31: 53 push %rbx
32: 50 push %rax
33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
38: 65 8b 05 91 27 9c 7e mov %gs:0x7e9c2791(%rip),%eax # 0x7e9c27d0