INFO: task kworker/u4:2:41 blocked for more than 143 seconds.
      Not tainted 5.19.0-rc8-syzkaller-00102-g33ea1340bafe #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2    state:D
 stack:23360 pid:   41 ppid:     2 flags:0x00004000
Workqueue: writeback wb_workfn
 (flush-7:3)

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5146 [inline]
 __schedule+0xa00/0x4b50 kernel/sched/core.c:6458
 schedule+0xd2/0x1f0 kernel/sched/core.c:6530
 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
 do_wait_for_common kernel/sched/completion.c:85 [inline]
 __wait_for_common+0x378/0x530 kernel/sched/completion.c:106
 f2fs_issue_checkpoint+0x363/0x460 fs/f2fs/checkpoint.c:1867
 f2fs_sync_fs+0x20f/0x420 fs/f2fs/super.c:1622
 f2fs_balance_fs_bg+0xc6a/0xef0 fs/f2fs/segment.c:477
 f2fs_write_node_pages+0x148/0xc50 fs/f2fs/node.c:2104
 do_writepages+0x1ab/0x690 mm/page-writeback.c:2443
 __writeback_single_inode+0x126/0x10d0 fs/fs-writeback.c:1587
 writeback_sb_inodes+0x54d/0xf10 fs/fs-writeback.c:1865
 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1936
 wb_writeback+0x7f8/0xc30 fs/fs-writeback.c:2041
 wb_check_old_data_flush fs/fs-writeback.c:2141 [inline]
 wb_do_writeback fs/fs-writeback.c:2194 [inline]
 wb_workfn+0x84f/0x1230 fs/fs-writeback.c:2222
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/28:
 #0: 
ffffffff8bd846e0
 (
rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
3 locks held by kworker/u4:2/41:
 #0: 
ffff8880173b3938
 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc90000d2fda8 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff88806e7020e0 (&type->s_umount_key#101){++++}-{3:3}, at: trylock_super+0x1d/0x100 fs/super.c:415
2 locks held by getty/3292:
 #0: ffff88814ab80098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc90001c482e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
1 lock held by syz-fuzzer/3923:
2 locks held by kworker/u4:20/10585:
4 locks held by kworker/u4:21/11105:
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8881400a3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc90004a17da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffffffff8d576250 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:556
 #3: ffffffff8bd8ec28 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x630 kernel/rcu/tree.c:4105
1 lock held by syz-executor.3/23555:
5 locks held by f2fs_ckpt-7:3/32339:
6 locks held by kworker/0:0/32716:
 #0: 
ffff8881457e4938
 (
(wq_completion)usb_hub_wq
){+.+.}-{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+0x87a/0x1610 kernel/workqueue.c:2260
 #1: 
ffffc90005607da8
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff888021613190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff888021613190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691
 #3: ffff888021b7b4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3095 [inline]
 #3: ffff888021b7b4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5259 [inline]
 #3: ffff888021b7b4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 #3: ffff888021b7b4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5663 [inline]
 #3: ffff888021b7b4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2001/0x4690 drivers/usb/core/hub.c:5745
 #4: ffff888021a88068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5260 [inline]
 #4: ffff888021a88068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 #4: ffff888021a88068 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5663 [inline]
 #4: ffff888021a88068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x202a/0x4690 drivers/usb/core/hub.c:5745
 #5: ffffffff8cc9c290 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x188/0x1ce0 drivers/usb/core/hub.c:2953
2 locks held by kworker/0:7/2546:
2 locks held by syz-executor.2/2919:
 #0: ffffffff8bdece48 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x7d/0xe0 kernel/tracepoint.c:478
 #1: ffffffff8bd8ed60 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #1: ffffffff8bd8ed60 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f8/0x610 kernel/rcu/tree_exp.h:927
2 locks held by syz-executor.5/2925:
 #0: ffffffff8bc59b48 (sched_core_mutex){+.+.}-{3:3}, at: sched_core_get+0x47/0x190 kernel/sched/core.c:404
 #1: ffffffff8bd8ed60 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #1: ffffffff8bd8ed60 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d3/0x610 kernel/rcu/tree_exp.h:927
1 lock held by syz-executor.0/2936:
 #0: ffffffff8bdece48 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x7d/0xe0 kernel/tracepoint.c:478
2 locks held by syz-executor.4/2942:

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc8-syzkaller-00102-g33ea1340bafe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xc1d/0xf50 kernel/hung_task.c:369
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2966 Comm: klogd Not tainted 5.19.0-rc8-syzkaller-00102-g33ea1340bafe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:selinux_socket_unix_may_send+0x26/0x270 security/selinux/hooks.c:4971
Code: 00 00 00 00 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 49 89 fc 55 48 89 f5 53 48 81 ec e8 00 00 00 48 c7 44 24 08 b3 8a b5 41 <48> 8d 44 24 08 48 c7 44 24 10 c8 81 6b 8b 48 c1 e8 03 48 c7 44 24
RSP: 0018:ffffc90003087a58 EFLAGS: 00000292
RAX: 1ffffffff16ffc50 RBX: ffffffff8b7fe268 RCX: 0000000000000000
RDX: ffff88807d90c1c0 RSI: ffff88801f1f6180 RDI: ffff88801f282680
RBP: ffff88801f1f6180 R08: 0000000000000003 R09: 0000000000000005
R10: 0000000000000002 R11: 0000000000000001 R12: ffff88801f282680
R13: dffffc0000000000 R14: ffff88801f282680 R15: 0000000000000000
FS:  00007fb653589800(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb70b16a1b8 CR3: 000000007d8b9000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 security_unix_may_send+0x48/0xa0 security/security.c:2173
 unix_dgram_sendmsg+0xdf0/0x1ad0 net/unix/af_unix.c:1979
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 __sys_sendto+0x21a/0x320 net/socket.c:2119
 __do_sys_sendto net/socket.c:2131 [inline]
 __se_sys_sendto net/socket.c:2127 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2127
 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: 0033:0x7fb6537250ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffcc7a1a948 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb6537250ac
RDX: 0000000000000048 RSI: 000055e285856800 RDI: 0000000000000003
RBP: 000055e28584d2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fb6538a077d R15: 00007ffcc7a1aa58
 </TASK>