INFO: task syz-executor.4:16324 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D
 stack:29240 pid:16324 ppid:3644   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xae9/0x53f0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106
 f2fs_issue_checkpoint+0x358/0x460 fs/f2fs/checkpoint.c:1882
 f2fs_sync_fs+0x240/0x4c0 fs/f2fs/super.c:1656
 sync_fs_one_sb fs/sync.c:84 [inline]
 sync_fs_one_sb+0x107/0x140 fs/sync.c:80
 iterate_supers+0x13c/0x290 fs/super.c:724
 ksys_sync+0xa8/0x150 fs/sync.c:104
 __do_sys_sync+0xa/0x10 fs/sync.c:113
 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+0x63/0xcd
RIP: 0033:0x7f1a67c8b5a9
RSP: 002b:00007f1a689c0168 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f1a67dac050 RCX: 00007f1a67c8b5a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f1a67ce67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc04c97fbf R14: 00007f1a689c0300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:16331 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D
 stack:25512 pid:16331 ppid:3640   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xae9/0x53f0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106
 f2fs_issue_checkpoint+0x358/0x460 fs/f2fs/checkpoint.c:1882
 f2fs_sync_fs+0x240/0x4c0 fs/f2fs/super.c:1656
 sync_fs_one_sb fs/sync.c:84 [inline]
 sync_fs_one_sb+0x107/0x140 fs/sync.c:80
 iterate_supers+0x13c/0x290 fs/super.c:724
 ksys_sync+0xa8/0x150 fs/sync.c:104
 __do_sys_sync+0xa/0x10 fs/sync.c:113
 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+0x63/0xcd
RIP: 0033:0x7fc40d28b5a9
RSP: 002b:00007fc40df42168 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fc40d3abf80 RCX: 00007fc40d28b5a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc40d2e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9c08c6bf R14: 00007fc40df42300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:16340 blocked for more than 145 seconds.
      Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D
 stack:28136 pid:16340 ppid:3640   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xae9/0x53f0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106
 f2fs_issue_checkpoint+0x358/0x460 fs/f2fs/checkpoint.c:1882
 f2fs_sync_fs+0x240/0x4c0 fs/f2fs/super.c:1656
 sync_fs_one_sb fs/sync.c:84 [inline]
 sync_fs_one_sb+0x107/0x140 fs/sync.c:80
 iterate_supers+0x13c/0x290 fs/super.c:724
 ksys_sync+0xa8/0x150 fs/sync.c:104
 __do_sys_sync+0xa/0x10 fs/sync.c:113
 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+0x63/0xcd
RIP: 0033:0x7fc40d28b5a9
RSP: 002b:00007fc40df21168 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fc40d3ac050 RCX: 00007fc40d28b5a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc40d2e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9c08c6bf R14: 00007fc40df21300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:16345 blocked for more than 147 seconds.
      Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D
 stack:28136 pid:16345 ppid:3640   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xae9/0x53f0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x1ca/0x5c0 kernel/sched/completion.c:106
 f2fs_issue_checkpoint+0x358/0x460 fs/f2fs/checkpoint.c:1882
 f2fs_sync_fs+0x240/0x4c0 fs/f2fs/super.c:1656
 sync_fs_one_sb fs/sync.c:84 [inline]
 sync_fs_one_sb+0x107/0x140 fs/sync.c:80
 iterate_supers+0x13c/0x290 fs/super.c:724
 ksys_sync+0xa8/0x150 fs/sync.c:104
 __do_sys_sync+0xa/0x10 fs/sync.c:113
 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+0x63/0xcd
RIP: 0033:0x7fc40d28b5a9
RSP: 002b:00007fc40df00168 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fc40d3ac120 RCX: 00007fc40d28b5a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc40d2e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9c08c6bf R14: 00007fc40df00300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: 
ffffffff8bf87df0
 (
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: 
ffffffff8bf87af0
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: 
ffffffff8bf88940
 (rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
1 lock held by khugepaged/34:
 #0: ffff8880b9a3a118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:537
2 locks held by getty/3281:
 #0: 
ffff8880275ab098
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: 
ffffc900031262f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/1:2/6765:
 #0: 
ffff888011864d38
 (
(wq_completion)events
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc90003b5fda8
 (
(linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: 
ffffffff8d7b7de8
 (
rtnl_mutex
){+.+.}-{3:3}
, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:263
3 locks held by kworker/1:7/1572:
 #0: 
ffff88814aad7d38
 (
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc900156f7da8
 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: 
ffffffff8d7b7de8
 (
rtnl_mutex
){+.+.}-{3:3}
, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624
5 locks held by kworker/u4:5/8689:
2 locks held by kworker/1:12/10868:
 #0: 
ffff888011866538
 (
(wq_completion)rcu_gp
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: 
ffffc90005c5fda8
 (
(work_completion)(&rew->rew_work)
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
1 lock held by syz-executor.4/16324:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
1 lock held by syz-executor.3/16331:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
1 lock held by syz-executor.3/16340:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
1 lock held by syz-executor.3/16345:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
5 locks held by f2fs_ckpt-7:3/16336:
1 lock held by syz-executor.5/16373:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
1 lock held by syz-executor.4/16424:
 #0: 
ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
1 lock held by syz-executor.3/16467:
 #0: ffff88803eb5c0e0
 (
&type->s_umount_key
#69
){++++}-{3:3}
, at: iterate_supers+0xdb/0x290 fs/super.c:722
2 locks held by syz-executor.4/16482:
 #0: 
ffffffff8d7b7de8
 (rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6088
 #1: 
ffffffff8bf935f8
 (
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
, at: synchronize_rcu_expedited+0x5db/0x770 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/16483:
 #0: ffffffff8d7b7de8
 (
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6088

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

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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+0x24/0x18a lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 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+0xc71/0xfc0 kernel/hung_task.c:377
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10868 Comm: kworker/1:12 Not tainted 6.1.0-rc3-syzkaller-00288-gb208b9fbbcba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:__lock_release kernel/locking/lockdep.c:5372 [inline]
RIP: 0010:lock_release+0x2d7/0x810 kernel/locking/lockdep.c:5688
Code: ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 49 04 00 00 66 83 6b 22 10 66 f7 43 22 f0 ff 0f 85 0c 01 00 00 <4c> 89 f2 44 8b 64 24 50 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03
RSP: 0018:ffffc90005c5fbf8 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff8880251fa7e0 RCX: ffffc90005c5fc48
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880251fa802
RBP: 1ffff92000b8bf81 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8ccc2038
R13: 0000000000000003 R14: ffff8880251fa788 R15: ffff8880251f9d40
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005596201de000 CR3: 000000000bc8e000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:390 [inline]
 wg_ratelimiter_gc_entries+0x2d4/0x430 drivers/net/wireguard/ratelimiter.c:76
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>