INFO: task syz.2.830:8694 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.830 state:D stack:26792 pid:8694 tgid:8691 ppid:5630 task_flags:0x400140 flags:0x08080002
Call Trace:
context_switch kernel/sched/core.c:5520 [inline]
__schedule+0x17d4/0x5820 kernel/sched/core.c:7270
__schedule_loop kernel/sched/core.c:7347 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7362
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
class_mutex_constructor include/linux/mutex.h:253 [inline]
odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
chrdev_open+0x4d9/0x600 fs/char_dev.c:411
do_dentry_open+0x816/0x1380 fs/open.c:996
vfs_open+0x3b/0x340 fs/open.c:1101
do_open fs/namei.c:4837 [inline]
path_openat+0x1443/0x1d60 fs/namei.c:5000
do_file_open+0x23e/0x4a0 fs/namei.c:5029
do_sys_openat2+0x115/0x200 fs/open.c:1417
do_sys_open fs/open.c:1423 [inline]
__do_compat_sys_openat fs/open.c:1485 [inline]
__se_compat_sys_openat fs/open.c:1483 [inline]
__ia32_compat_sys_openat+0x131/0x160 fs/open.c:1483
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
__do_fast_syscall_32+0x27a/0x6a0 arch/x86/entry/syscall_32.c:291
do_fast_syscall_32+0x33/0x70 arch/x86/entry/syscall_32.c:316
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf705f0ec
RSP: 002b:00000000f542c50c EFLAGS: 00000206 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000080000000
RDX: 0000000000000081 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
locks held by khungtaskd/30: 1, last CPU#0:
#0: ffffffff8ed5a420 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8ed5a420 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#0: ffffffff8ed5a420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6793
locks held by getty/5366: 2, on CPU#0:
#0: ffff8880364640a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
locks held by kworker/0:5/5684: 5, on CPU#0:
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#1: ffffc9000493fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#1: ffffc9000493fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#1: ffffc9000493fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#1: ffffc9000493fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#2: ffff88802a6d01d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
#2: ffff88802a6d01d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5907
#3: ffff8880541551d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
#3: ffff8880541551d8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073
#4: ffff8880456531a0 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
#4: ffff8880456531a0 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073
locks held by kworker/1:8/5744: 5, on CPU#1:
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#0: ffff8880222f9140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#1: ffffc90004c8fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#1: ffffc90004c8fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#1: ffffc90004c8fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#1: ffffc90004c8fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#2: ffff88802bba71d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
#2: ffff88802bba71d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5907
#3: ffff88802bba4568 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3260 [inline]
#3: ffff88802bba4568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5472 [inline]
#3: ffff88802bba4568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5715 [inline]
#3: ffff88802bba4568 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5879 [inline]
#3: ffff88802bba4568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x20a1/0x4d30 drivers/usb/core/hub.c:5961
#4: ffff88802bb61b60 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5473 [inline]
#4: ffff88802bb61b60 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5715 [inline]
#4: ffff88802bb61b60 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5879 [inline]
#4: ffff88802bb61b60 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x20c9/0x4d30 drivers/usb/core/hub.c:5961
locks held by kworker/u8:16/7784: 3, on CPU#1:
#0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#1: ffffc90005b37c40 ((linkwatch_work).work){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#1: ffffc90005b37c40 ((linkwatch_work).work){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#1: ffffc90005b37c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline]
#1: ffffc90005b37c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470
#2: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:313
locks held by syz.3.778/8536: 3, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_release+0x4b/0x70 sound/core/seq/oss/seq_oss.c:140
#1: ffff8880617bccb0 (&mdev->open_mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#1: ffff8880617bccb0 (&mdev->open_mutex){+.+.}-{4:4}, at: snd_seq_oss_midi_close+0x17e/0x650 sound/core/seq/oss/seq_oss_midi.c:373
#2: ffff88807ec73990 (&grp->list_mutex){++++}-{4:4}, at: class_rwsem_write_constructor include/linux/rwsem.h:270 [inline]
#2: ffff88807ec73990 (&grp->list_mutex){++++}-{4:4}, at: snd_seq_port_disconnect+0x54/0x950 sound/core/seq/seq_ports.c:625
locks held by syz.2.830/8694: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.1.835/8710: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.8.919/9028: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.6.960/9152: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.9.1015/9334: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.0.1016/9336: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.7.1028/9412: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.4.1053/9696: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.5.1089/9826: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.5.1089/9830: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.5.1089/9845: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.5.1089/9846: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.5.1089/9859: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.1.1124/9947: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.3.1139/9999: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.3.1139/10004: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.3.1139/10007: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.2.1142/10010: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.8.1160/10065: 1, on CPU#0:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.9.1194/10226: 1, on CPU#1:
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:253 [inline]
#0: ffffffff901a6620 (register_mutex#4){+.+.}-{4:4}, at: odev_open+0x5c/0xa0 sound/core/seq/oss/seq_oss.c:127
locks held by syz.7.1236/10426: 1, last CPU#0:
#0: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:650 [inline]
#0: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3587
locks held by syz-executor/10414: 2, on CPU#1:
#0: ffffffff90239a68 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x4e2/0x720 net/core/net_namespace.c:579
#1: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: ip_tunnel_init_net+0x2d5/0x820 net/ipv4/ip_tunnel.c:1136
locks held by syz.0.1238/10422: 1, on CPU#0:
#0: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:650 [inline]
#0: ffffffff902482c0 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0 drivers/net/tun.c:3587
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xfd7/0x1030 kernel/hung_task.c:561
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10426 Comm: syz.7.1236 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:lock_accessed kernel/locking/lockdep.c:1557 [inline]
RIP: 0010:__bfs kernel/locking/lockdep.c:1781 [inline]
RIP: 0010:__bfs_backwards kernel/locking/lockdep.c:1876 [inline]
RIP: 0010:check_irq_usage kernel/locking/lockdep.c:2812 [inline]
RIP: 0010:check_prev_add kernel/locking/lockdep.c:3185 [inline]
RIP: 0010:check_prevs_add kernel/locking/lockdep.c:3300 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3924 [inline]
RIP: 0010:__lock_acquire+0x17ae/0x2cf0 kernel/locking/lockdep.c:5253
Code: 8b 3c e5 a0 f9 98 96 ff c0 25 ff 0f 00 00 89 05 28 b9 f6 14 4d 85 ff 0f 84 ac 01 00 00 49 8b 47 10 48 85 c0 0f 84 38 0d 00 00 <8b> 0d 14 b9 f6 14 39 48 5c 0f 84 6a ff ff ff 89 48 5c 49 8b 47 30
RSP: 0018:ffffc9000399ef40 EFLAGS: 00000086
RAX: ffffffff943f01e8 RBX: 00000000000003fd RCX: ffffffff972976e8
RDX: ffffffff973e2908 RSI: ffff888089624aa0 RDI: 00000000000003fd
RBP: 2481c4e89d3840a5 R08: ffffc9000399ef08 R09: 0000000000000020
R10: 0000000000000000 R11: ffffffff81a313b0 R12: 000000000000008e
R13: ffff888089624aa0 R14: ffff888089623e80 R15: ffffffff972976e8
FS: 0000000000000000(0000) GS:ffff888124cf3000(0000) knlGS:0000000000000000
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000057a55470 CR3: 00000000744d8000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5886
seqcount_lockdep_reader_access+0x55/0x100 include/linux/seqlock.h:73
ktime_get+0x45/0x220 kernel/time/timekeeping.c:1002
clockevents_program_event+0x290/0x630 kernel/time/clockevents.c:363
hrtimer_rearm kernel/time/hrtimer.c:2169 [inline]
__hrtimer_rearm_deferred+0x36c/0x4b0 kernel/time/hrtimer.c:2189
hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:58 [inline]
hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:67 [inline]
irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
irqentry_exit+0x8d3/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x222/0x350 kernel/locking/lockdep.c:5890
Code: ff ff ff e8 c0 9d 3d 0a f7 44 24 08 00 02 00 00 0f 84 39 ff ff ff 65 48 8b 05 12 29 f0 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d f7 4c da
RSP: 0018:ffffc9000399f390 EFLAGS: 00000286
RAX: 984d1a56ae9fc200 RBX: 0000000000000000 RCX: 8000000000000201
RDX: ffffffff9444d3f0 RSI: ffffffff8e6f2d97 RDI: ffffffff8c6d4780
RBP: ffffffff89d1071e R08: 0000000000000008 R09: ffffffff96be1288
R10: 0000000015ab89ab R11: 000000008e254332 R12: 0000000000000000
R13: ffff88809fdf4170 R14: 0000000000000001 R15: 0000000000000246
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:182 [inline]
_raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:205
spin_lock_bh include/linux/spinlock.h:353 [inline]
some_qdisc_is_busy net/sched/sch_generic.c:1352 [inline]
dev_deactivate_many+0xade/0xda0 net/sched/sch_generic.c:1404
__dev_close_many+0x180/0x6e0 net/core/dev.c:1782
netif_close_many+0x249/0x660 net/core/dev.c:1824
unregister_netdevice_many_notify+0xb76/0x2140 net/core/dev.c:12487
unregister_netdevice_many net/core/dev.c:12589 [inline]
unregister_netdevice_queue+0x2f5/0x340 net/core/dev.c:12390
unregister_netdevice include/linux/netdevice.h:3487 [inline]
__tun_detach+0x1074/0x1900 drivers/net/tun.c:637
tun_detach drivers/net/tun.c:653 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3587
__fput+0x418/0xa50 fs/file_table.c:512
task_work_run+0x1d9/0x270 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x73a/0x2360 kernel/exit.c:1008
do_group_exit+0x22d/0x2f0 kernel/exit.c:1151
get_signal+0x121b/0x12c0 kernel/signal.c:3039
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
__do_fast_syscall_32+0x437/0x6a0 arch/x86/entry/syscall_32.c:294
do_fast_syscall_32+0x33/0x70 arch/x86/entry/syscall_32.c:316
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f440ec
Code: Unable to access opcode bytes at 0xf7f440c2.
RSP: 002b:00000000f4b7e50c EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000008914
RDX: 0000000080002280 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000