INFO: task kworker/0:2:29451 blocked for more than 143 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D26800 29451 2 0x80004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4213 __mutex_lock_common+0x11f1/0x2f30 kernel/locking/mutex.c:1033 __mutex_lock kernel/locking/mutex.c:1103 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1118 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 linkwatch_event+0xe/0x60 net/core/link_watch.c:242 process_one_work+0x7f5/0x10f0 kernel/workqueue.c:2264 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 INFO: task syz-executor.2:2172 blocked for more than 143 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28456 2172 8759 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4213 __mutex_lock_common+0x11f1/0x2f30 kernel/locking/mutex.c:1033 __mutex_lock kernel/locking/mutex.c:1103 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1118 rtnl_lock net/core/rtnetlink.c:72 [inline] rtnetlink_rcv_msg+0x83c/0xd40 net/core/rtnetlink.c:5433 netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2478 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5454 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1329 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x1ed/0x290 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c449 Code: Bad RIP value. RSP: 002b:00007fbcf127bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fbcf127c6d4 RCX: 000000000045c449 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009fa R14: 00000000004cc70b R15: 000000000076bfcc INFO: task syz-executor.3:2168 blocked for more than 144 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28520 2168 8762 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4213 __mutex_lock_common+0x11f1/0x2f30 kernel/locking/mutex.c:1033 __mutex_lock kernel/locking/mutex.c:1103 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1118 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 unregister_netdevice_notifier+0x37/0x3b0 net/core/dev.c:1777 raw_release+0x60/0x790 net/can/raw.c:354 __sock_release net/socket.c:605 [inline] sock_close+0xe1/0x260 net/socket.c:1283 __fput+0x2e4/0x740 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:313 task_work_run+0x176/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:164 [inline] prepare_exit_to_usermode+0x480/0x5b0 arch/x86/entry/common.c:195 syscall_return_slowpath+0x113/0x4a0 arch/x86/entry/common.c:278 do_syscall_64+0x11f/0x1c0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x415fe1 Code: 41 bb 04 00 00 00 49 83 c1 fc eb 24 45 88 60 01 90 48 c1 ea 04 49 83 c0 02 4d 89 cb 49 89 c9 48 89 f9 48 89 d7 48 89 c2 48 8b <84> 24 88 00 00 00 49 89 fc 48 83 e7 0f 48 81 cf f0 00 00 00 49 8d RSP: 002b:00007ffe1ade2f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000415fe1 RDX: 0000001b2f520000 RSI: 0000000000000923 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00000000cbe44923 R09: 00000000cbe44927 R10: 00007ffe1ade3000 R11: 0000000000000293 R12: 000000000076c920 R13: 000000000076c920 R14: 00000000000cade4 R15: 000000000076bfcc INFO: task syz-executor.0:2222 blocked for more than 144 seconds. Not tainted 5.6.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D26040 2222 8750 0x00004004 Call Trace: context_switch kernel/sched/core.c:3380 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4080 schedule+0x188/0x210 kernel/sched/core.c:4154 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4213 __mutex_lock_common+0x11f1/0x2f30 kernel/locking/mutex.c:1033 __mutex_lock kernel/locking/mutex.c:1103 [inline] mutex_lock_nested+0x1b/0x30 kernel/locking/mutex.c:1118 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 sock_do_ioctl+0x11e/0x260 net/socket.c:1066 sock_ioctl+0x464/0x690 net/socket.c:1204 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl fs/ioctl.c:763 [inline] __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl+0x113/0x190 fs/ioctl.c:770 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:770 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c449 Code: Bad RIP value. RSP: 002b:00007f6920405c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f69204066d4 RCX: 000000000045c449 RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000008 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000040e R14: 00000000004c66d9 R15: 000000000076bf2c Showing all locks held in the system: 8 locks held by kworker/u4:3/132: 1 lock held by khungtaskd/1130: #0: ffffffff892d9908 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 include/linux/rcupdate.h:207 3 locks held by kworker/1:35/2756: #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: spin_unlock_irq include/linux/spinlock.h:388 [inline] #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: process_one_work+0x763/0x10f0 kernel/workqueue.c:2237 #1: ffffc90007fc7d78 (deferred_process_work){+.+.}, at: process_one_work+0x7a5/0x10f0 kernel/workqueue.c:2239 #2: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 3 locks held by kworker/1:37/2759: #0: ffff888215240d28 ((wq_completion)ipv6_addrconf){+.+.}, at: spin_unlock_irq include/linux/spinlock.h:388 [inline] #0: ffff888215240d28 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x763/0x10f0 kernel/workqueue.c:2237 #1: ffffc90007fd7d78 ((addr_chk_work).work){+.+.}, at: process_one_work+0x7a5/0x10f0 kernel/workqueue.c:2239 #2: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 1 lock held by rsyslogd/8621: #0: ffff888092bca3e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x279/0x310 fs/file.c:821 2 locks held by getty/8711: #0: ffff8880a6850090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900019bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8712: #0: ffff88809b6cb090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900019ab2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8713: #0: ffff88809a52a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900019272e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8714: #0: ffff888099e62090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900019db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8715: #0: ffff88809efbc090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc900019cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8716: #0: ffff888099c86090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000199b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by getty/8717: #0: ffff8880a8242090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000191f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x22f/0x1bc0 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.0/9292: #0: ffff8880aa0b7c80 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8880aa0b7c80 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff8880aa0b7c80 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 2 locks held by syz-executor.3/14663: #0: ffff88808df34240 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff88808df34240 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff88808df34240 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 3 locks held by kworker/1:1/15270: 2 locks held by syz-executor.3/16069: #0: ffff8880aa0ecc00 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8880aa0ecc00 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff8880aa0ecc00 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 2 locks held by syz-executor.3/27908: #0: ffff88808df6ac80 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff88808df6ac80 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff88808df6ac80 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 2 locks held by syz-executor.3/27911: #0: ffff8880959a0740 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8880959a0740 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff8880959a0740 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 2 locks held by syz-executor.3/27929: #0: ffff8880912eac40 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8880912eac40 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff8880912eac40 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 2 locks held by syz-executor.2/27953: #0: ffff88808dc31700 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff88808dc31700 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff88808dc31700 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 3 locks held by kworker/0:2/29451: #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: spin_unlock_irq include/linux/spinlock.h:388 [inline] #0: ffff8880aa426d28 ((wq_completion)events){+.+.}, at: process_one_work+0x763/0x10f0 kernel/workqueue.c:2237 #1: ffffc9000453fd78 ((linkwatch_work).work){+.+.}, at: process_one_work+0x7a5/0x10f0 kernel/workqueue.c:2239 #2: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 1 lock held by syz-executor.2/2172: #0: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x83c/0xd40 net/core/rtnetlink.c:5433 3 locks held by syz-executor.3/2168: #0: ffff8880a53f4c00 (&sb->s_type->i_mutex_key#11){+.+.}, at: inode_lock include/linux/fs.h:791 [inline] #0: ffff8880a53f4c00 (&sb->s_type->i_mutex_key#11){+.+.}, at: __sock_release net/socket.c:604 [inline] #0: ffff8880a53f4c00 (&sb->s_type->i_mutex_key#11){+.+.}, at: sock_close+0x9e/0x260 net/socket.c:1283 #1: ffffffff8958f168 (pernet_ops_rwsem){++++}, at: unregister_netdevice_notifier+0x32/0x3b0 net/core/dev.c:1776 #2: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 2 locks held by syz-executor.3/2169: 1 lock held by syz-executor.0/2222: #0: ffffffff89590da0 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1130 Comm: khungtaskd Not tainted 5.6.0-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:77 [inline] dump_stack+0x1fb/0x318 lib/dump_stack.c:118 nmi_cpu_backtrace+0xaa/0x190 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x16f/0x290 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace+0x17/0x20 include/linux/nmi.h:146 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xd40/0xd60 kernel/hung_task.c:289 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2169 Comm: syz-executor.3 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:lock_is_held_type+0x23f/0x2b0 kernel/locking/lockdep.c:4523 Code: 31 db 4c 8b 7d b8 4c 8b 65 c0 43 8a 04 37 84 c0 75 4b 41 c7 45 00 00 00 00 00 48 c7 c0 10 d3 2a 89 48 c1 e8 03 42 80 3c 30 00 <74> 0c 48 c7 c7 10 d3 2a 89 e8 13 3e 58 00 48 83 3d 2b de ce 07 00 RSP: 0018:ffffc900000076f8 EFLAGS: 00000046 RAX: 1ffffffff1255a62 RBX: 0000000000000001 RCX: 0000000000010202 RDX: 00000000ffffffff RSI: ffffffff892d9908 RDI: ffff88803daf0ee8 RBP: ffffc90000007748 R08: ffffffff83a4cc07 R09: ffffed1015d47004 R10: ffffed1015d47004 R11: 0000000000000000 R12: 0000000000000082 R13: ffff88803daf0e94 R14: dffffc0000000000 R15: 1ffff11007b5e1d2 FS: 00007f0f5b19a700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000045c41f CR3: 0000000212a1f000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:361 [inline] rcu_read_lock_held+0xa7/0x130 kernel/rcu/update.c:283 __perf_output_begin kernel/events/ring_buffer.c:169 [inline] perf_output_begin_forward+0x13d/0xcb0 kernel/events/ring_buffer.c:268 __perf_event_output kernel/events/core.c:6951 [inline] perf_event_output_forward+0xdc/0x1c0 kernel/events/core.c:6969 __perf_event_overflow+0x1c6/0x350 kernel/events/core.c:8436 perf_swevent_hrtimer+0x37b/0x4e0 kernel/events/core.c:9822 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x3f3/0x840 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x37c/0xda0 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1119 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1144 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:lock_acquire+0x1ae/0x250 kernel/locking/lockdep.c:4487 Code: c1 e8 03 42 80 3c 30 00 74 0c 48 c7 c7 10 d3 2a 89 e8 56 67 58 00 48 83 3d 6e 07 cf 07 00 0f 84 9c 00 00 00 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 RSP: 0018:ffffc900032eefc0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1255a62 RBX: 0000000000000000 RCX: ffffffff815ca265 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffffc900032ef018 R08: dffffc0000000000 R09: fffffbfff1406523 R10: fffffbfff1406523 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8925b788 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] nf_conntrack_lock net/netfilter/nf_conntrack_core.c:91 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:2137 [inline] nf_ct_iterate_cleanup+0xab/0x3a0 net/netfilter/nf_conntrack_core.c:2171 nf_ct_iterate_cleanup_net+0xf9/0x150 net/netfilter/nf_conntrack_core.c:2256 masq_device_event+0x9f/0xd0 net/netfilter/nf_nat_masquerade.c:88 notifier_call_chain kernel/notifier.c:83 [inline] __raw_notifier_call_chain kernel/notifier.c:361 [inline] raw_notifier_call_chain+0xe3/0x190 kernel/notifier.c:368 __dev_notify_flags+0x24a/0x4d0 net/core/dev.c:1948 dev_change_flags+0xec/0x190 net/core/dev.c:8217 do_setlink+0xb17/0x3880 net/core/rtnetlink.c:2596 rtnl_group_changelink net/core/rtnetlink.c:3103 [inline] __rtnl_newlink net/core/rtnetlink.c:3257 [inline] rtnl_newlink+0x10b2/0x1c00 net/core/rtnetlink.c:3377 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5436 netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2478 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5454 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1329 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x1ed/0x290 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c449 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0f5b199c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0f5b19a6d4 RCX: 000000000045c449 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009f9 R14: 00000000004cc6fa R15: 000000000076bf2c INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 0.000 msecs