INFO: task kworker/1:0:22 blocked for more than 146 seconds.
Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:23520 pid:22 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
usb_kill_urb+0x1d5/0x310 drivers/usb/core/urb.c:728
usb_start_wait_urb+0x1af/0x510 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+0xb2/0x3c0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x8a/0xe0 drivers/usb/core/message.c:1072
hub_port_init+0x11df/0x25c0 drivers/usb/core/hub.c:4967
hub_port_connect+0xd69/0x24f0 drivers/usb/core/hub.c:5334
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5549
port_event+0xecf/0x13b0 drivers/usb/core/hub.c:5709
hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5791
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:7:5134 blocked for more than 147 seconds.
Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7 state:D stack:23104 pid:5134 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
usb_kill_urb+0x1d5/0x310 drivers/usb/core/urb.c:728
usb_start_wait_urb+0x1af/0x510 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+0xb2/0x3c0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x8a/0xe0 drivers/usb/core/message.c:1072
hub_port_init+0x11df/0x25c0 drivers/usb/core/hub.c:4967
hub_port_connect+0xd69/0x24f0 drivers/usb/core/hub.c:5334
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5549
port_event+0xecf/0x13b0 drivers/usb/core/hub.c:5709
hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5791
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d3238d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d3240d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
3 locks held by kworker/0:1/14:
#0: ffff88802884e938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90000137d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e462708 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16e0 net/ipv6/addrconf.c:4083
5 locks held by kworker/1:0/22:
#0: ffff8881451f9538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900001c7d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff888022b40190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline]
#2: ffff888022b40190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bb/0xd80 drivers/usb/core/hub.c:5737
#3: ffff888022b434f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3145 [inline]
#3: ffff888022b434f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x6d5/0x24f0 drivers/usb/core/hub.c:5301
#4: ffff88801d21b168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x705/0x24f0 drivers/usb/core/hub.c:5302
1 lock held by khungtaskd/28:
#0: ffffffff8d323700 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4737:
#0: ffff8880277c8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
5 locks held by kworker/0:7/5134:
#0: ffff8881451f9538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90005127d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff888146e14190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:831 [inline]
#2: ffff888146e14190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bb/0xd80 drivers/usb/core/hub.c:5737
#3: ffff888146e174f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3145 [inline]
#3: ffff888146e174f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x6d5/0x24f0 drivers/usb/core/hub.c:5301
#4: ffff88801d32cc68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x705/0x24f0 drivers/usb/core/hub.c:5302
5 locks held by kworker/u4:9/5236:
2 locks held by kworker/1:17/10219:
#0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000398fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
1 lock held by syz-executor.1/10963:
#0: ffffffff8d328c00 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x5f0 kernel/rcu/tree.c:3995
1 lock held by syz-executor.0/10970:
#0: ffffffff8d328c00 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x5f0 kernel/rcu/tree.c:3995
2 locks held by syz-executor.3/10974:
#0: ffffffff8e462708 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e462708 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
#1: ffffffff8d328d38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8d328d38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a6/0x890 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.4/10984:
#0: ffffffff8e462708 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e462708 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x773/0xec0 net/core/rtnetlink.c:6138
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10970 Comm: syz-executor.0 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:rb_next+0x0/0xf0 lib/rbtree.c:493
Code: 74 eb 49 89 c6 48 8d 58 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 e3 48 89 df e8 9b 3a 36 f7 eb d9 66 0f 1f 84 00 00 00 00 00 <41> 57 41 56 41 54 53 49 89 fc 49 bf 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc9000571ed18 EFLAGS: 00000046
RAX: 1ffff11003f28b00 RBX: 1ffff11017307459 RCX: dffffc0000000000
RDX: ffff88807ec83b28 RSI: ffff88801f945840 RDI: ffff88801f945850
RBP: ffff8880b983a280 R08: dffffc0000000000 R09: fffffbfff1d20096
R10: fffffbfff1d20096 R11: 1ffffffff1d20095 R12: ffff88801f945840
R13: ffff8880b983a2c8 R14: dffffc0000000000 R15: ffff88801f945850
FS: 00007f1ca2856700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef8de3ff8 CR3: 00000000798b5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rb_erase_cached include/linux/rbtree.h:124 [inline]
__dequeue_entity kernel/sched/fair.c:650 [inline]
set_next_entity+0x282/0x620 kernel/sched/fair.c:4942
set_next_task_fair+0x1d2/0x710 kernel/sched/fair.c:12061
set_next_task kernel/sched/sched.h:2232 [inline]
pick_next_task+0x1afb/0x2040 kernel/sched/core.c:6146
__schedule+0x4ff/0xe40 kernel/sched/core.c:6519
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_timeout+0xac/0x300 kernel/time/timer.c:2143
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
rcu_barrier+0x473/0x5f0 kernel/rcu/tree.c:4063
netdev_wait_allrefs_any net/core/dev.c:10252 [inline]
netdev_run_todo+0xaba/0x1090 net/core/dev.c:10341
rtnl_unlock net/core/rtnetlink.c:148 [inline]
rtnetlink_rcv_msg+0x9dc/0xec0 net/core/rtnetlink.c:6142
netlink_rcv_skb+0x1f0/0x470 net/netlink/af_netlink.c:2564
netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1356
netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1932
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
____sys_sendmsg+0x597/0x8e0 net/socket.c:2476
___sys_sendmsg net/socket.c:2530 [inline]
__sys_sendmsg+0x28e/0x390 net/socket.c:2559
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1ca1a8c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ca2856168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1ca1bac050 RCX: 00007f1ca1a8c0d9
RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000007
RBP: 00007f1ca1ae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd587930df R14: 00007f1ca2856300 R15: 0000000000022000