INFO: task kworker/u4:11:9217 blocked for more than 143 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:11   state:D stack:23848 pid: 9217 ppid:     2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10619
 sit_exit_batch_net+0x535/0x750 net/ipv6/sit.c:1952
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
INFO: task systemd-udevd:20552 blocked for more than 143 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd   state:D stack:27928 pid:20552 ppid:  2973 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2db5637017
RSP: 002b:00007fff45a1d278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff45a1d2c0 RCX: 00007f2db5637017
RDX: 00007fff45a1d290 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007fff45a1d430 R08: 0000000000000000 R09: 0000000000000018
R10: 0000000000000001 R11: 0000000000000246 R12: 000055fd56492cf0
R13: 00007fff45a1d290 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
INFO: task systemd-udevd:20580 blocked for more than 143 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd   state:D stack:27928 pid:20580 ppid:  2973 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2db5637017
RSP: 002b:00007fff45a1d278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff45a1d2c0 RCX: 00007f2db5637017
RDX: 00007fff45a1d290 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007fff45a1d430 R08: 0000000000000000 R09: 0000000000000078
R10: 0000000000000001 R11: 0000000000000246 R12: 000055fd56492cf0
R13: 00007fff45a1d290 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
INFO: task systemd-udevd:20585 blocked for more than 143 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd   state:D stack:27928 pid:20585 ppid:  2973 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2db5637017
RSP: 002b:00007fff45a1d278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff45a1d2c0 RCX: 00007f2db5637017
RDX: 00007fff45a1d290 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007fff45a1d430 R08: 0000000000000000 R09: 0000000000000018
R10: 0000000000000001 R11: 0000000000000246 R12: 000055fd56492cf0
R13: 00007fff45a1d290 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
INFO: task systemd-udevd:20667 blocked for more than 144 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-udevd   state:D stack:27928 pid:20667 ppid:  2973 flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
 sock_do_ioctl+0x15a/0x230 net/socket.c:1132
 sock_ioctl+0x2f1/0x640 net/socket.c:1235
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2db5637017
RSP: 002b:00007fff45a1d278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff45a1d2c0 RCX: 00007f2db5637017
RDX: 00007fff45a1d290 RSI: 0000000000008946 RDI: 0000000000000007
RBP: 00007fff45a1d430 R08: 0000000000000000 R09: 0000000000000060
R10: 0000000000000001 R11: 0000000000000246 R12: 000055fd56492cf0
R13: 00007fff45a1d290 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
INFO: task syz-executor.5:21023 can't die for more than 144 seconds.
task:syz-executor.5  state:R  running task     stack:26120 pid:21023 ppid: 15719 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 dev_deactivate_many+0x710/0xc60 net/sched/sch_generic.c:1302
 dev_deactivate+0xe9/0x1b0 net/sched/sch_generic.c:1312
 qdisc_graft+0xdac/0x1260 net/sched/sch_api.c:1061
 tc_modify_qdisc+0xb92/0x1980 net/sched/sch_api.c:1671
 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f00baa76a39
RSP: 002b:00007f00b7fec188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f00bab79f60 RCX: 00007f00baa76a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007f00baad0c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff740bb4df R14: 00007f00b7fec300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:21026 can't die for more than 144 seconds.
task:syz-executor.3  state:D stack:27456 pid:21026 ppid: 15717 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f56502a6a39
RSP: 002b:00007f564d81c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f56503a9f60 RCX: 00007f56502a6a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007f5650300c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc1fab7edf R14: 00007f564d81c300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:21026 blocked for more than 145 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27456 pid:21026 ppid: 15717 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f56502a6a39
RSP: 002b:00007f564d81c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f56503a9f60 RCX: 00007f56502a6a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007f5650300c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc1fab7edf R14: 00007f564d81c300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.4:21029 can't die for more than 145 seconds.
task:syz-executor.4  state:D stack:27912 pid:21029 ppid: 17887 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb274ba3a39
RSP: 002b:00007fb272119188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb274ca6f60 RCX: 00007fb274ba3a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007fb274bfdc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb49f357f R14: 00007fb272119300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.4:21029 blocked for more than 145 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27912 pid:21029 ppid: 17887 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb274ba3a39
RSP: 002b:00007fb272119188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb274ca6f60 RCX: 00007fb274ba3a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007fb274bfdc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb49f357f R14: 00007fb272119300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:21047 can't die for more than 146 seconds.
task:syz-executor.2  state:D stack:27912 pid:21047 ppid: 18649 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f61579c2a39
RSP: 002b:00007f6154f38188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6157ac5f60 RCX: 00007f61579c2a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007f6157a1cc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff29b7ddbf R14: 00007f6154f38300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.2:21047 blocked for more than 146 seconds.
      Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:27912 pid:21047 ppid: 18649 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 schedule+0xd2/0x260 kernel/sched/core.c:6319
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6378
 __mutex_lock_common kernel/locking/mutex.c:672 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:732
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2491
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x86d/0xda0 net/netlink/af_netlink.c:1916
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f61579c2a39
RSP: 002b:00007f6154f38188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6157ac5f60 RCX: 00007f61579c2a39
RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00007f6157a1cc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff29b7ddbf R14: 00007f6154f38300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8bb835a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6233:
 #0: ffff8880729f2370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
3 locks held by kworker/0:6/8523:
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
 #0: ffff888022149138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
 #1: ffffc90016d57db0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
 #2: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590
4 locks held by kworker/u4:11/9217:
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
 #0: ffff8881407b3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2268
 #1: ffffc9001843fdb0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2272
 #2: ffffffff8d2e9390 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:555
 #3: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10619
1 lock held by systemd-udevd/20552:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/20580:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/20585:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/20650:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/20667:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/20790:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by syz-executor.5/21023:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by syz-executor.3/21026:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by syz-executor.4/21029:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by syz-executor.2/21047:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 net/core/rtnetlink.c:5569
1 lock held by systemd-udevd/21065:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/21066:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/21067:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/21068:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/21069:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521
1 lock held by systemd-udevd/21070:
 #0: ffffffff8d2fcb68 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x470/0xee0 net/core/dev_ioctl.c:521

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
 watchdog+0xcb7/0xed0 kernel/hung_task.c:339
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20980 Comm: kworker/1:8 Not tainted 5.15.0-rc6-next-20211020-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:rol32 include/linux/bitops.h:75 [inline]
RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:419 [inline]
RIP: 0010:__lock_acquire+0xc2d/0x54a0 kernel/locking/lockdep.c:5015
Code: 0f 84 c6 0c 00 00 0f b7 44 24 10 8b 4c 24 40 8b 5c 24 50 c1 e0 0d 66 0b 44 24 08 98 2b 44 24 60 33 44 24 58 89 c2 29 c1 01 d8 <c1> c2 06 31 ca 41 89 d7 29 d3 01 c2 41 c1 c7 08 41 31 df 44 89 f9
RSP: 0018:ffffc900031cfa98 EFLAGS: 00000817
RAX: 0000000071047dc9 RBX: 000000009883e4cc RCX: 00000000acbf8189
RDX: 00000000d88098fd RSI: 0000000000000008 RDI: ffffffff8ff997e0
RBP: ffff888032748ada R08: 0000000000000000 R09: ffffffff8ff46adf
R10: fffffbfff1fe8d5b R11: 0000000000000000 R12: ffff888032748ab8
R13: ffff888032748000 R14: 0000000000000000 R15: 1343ca4685401a86
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effdb301000 CR3: 0000000022a7d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5637 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:367 [inline]
 wg_ratelimiter_gc_entries+0x5d/0x430 drivers/net/wireguard/ratelimiter.c:63
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 84 c6 0c 00 00    	je     0xccc
   6:	0f b7 44 24 10       	movzwl 0x10(%rsp),%eax
   b:	8b 4c 24 40          	mov    0x40(%rsp),%ecx
   f:	8b 5c 24 50          	mov    0x50(%rsp),%ebx
  13:	c1 e0 0d             	shl    $0xd,%eax
  16:	66 0b 44 24 08       	or     0x8(%rsp),%ax
  1b:	98                   	cwtl
  1c:	2b 44 24 60          	sub    0x60(%rsp),%eax
  20:	33 44 24 58          	xor    0x58(%rsp),%eax
  24:	89 c2                	mov    %eax,%edx
  26:	29 c1                	sub    %eax,%ecx
  28:	01 d8                	add    %ebx,%eax
* 2a:	c1 c2 06             	rol    $0x6,%edx <-- trapping instruction
  2d:	31 ca                	xor    %ecx,%edx
  2f:	41 89 d7             	mov    %edx,%r15d
  32:	29 d3                	sub    %edx,%ebx
  34:	01 c2                	add    %eax,%edx
  36:	41 c1 c7 08          	rol    $0x8,%r15d
  3a:	41 31 df             	xor    %ebx,%r15d
  3d:	44 89 f9             	mov    %r15d,%ecx