INFO: task kworker/u4:5:20842 blocked for more than 143 seconds.
      Not tainted 6.1.27-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5    state:D stack:21016 pid:20842 ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:1)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x132c/0x4330 kernel/sched/core.c:6554
 schedule+0xbf/0x180 kernel/sched/core.c:6630
 rwsem_down_write_slowpath+0xe93/0x14a0 kernel/locking/rwsem.c:1189
 f2fs_down_write fs/f2fs/f2fs.h:2207 [inline]
 f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:418
 f2fs_write_inode+0x4c3/0x540 fs/f2fs/inode.c:757
 write_inode fs/fs-writeback.c:1443 [inline]
 __writeback_single_inode+0x67d/0x11e0 fs/fs-writeback.c:1655
 writeback_sb_inodes+0xc21/0x1ac0 fs/fs-writeback.c:1881
 __writeback_inodes_wb+0x114/0x400 fs/fs-writeback.c:1952
 wb_writeback+0x4b1/0xe10 fs/fs-writeback.c:2057
 wb_check_old_data_flush fs/fs-writeback.c:2157 [inline]
 wb_do_writeback fs/fs-writeback.c:2210 [inline]
 wb_workfn+0xbec/0x1020 fs/fs-writeback.c:2238
 process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2289
 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436
 kthread+0x26e/0x300 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 rcu_tasks_kthre/12:
 #0: ffffffff8cf273f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8cf27bf0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8cf27220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3303:
 #0: ffff88814b5ad098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/3594:
 #0: ffff888079d3a0e0 (&type->s_umount_key#69){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362
1 lock held by syz-executor.4/3595:
 #0: ffffffff8cf2c7f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #0: ffffffff8cf2c7f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3b0/0x8a0 kernel/rcu/tree_exp.h:948
5 locks held by kworker/1:5/13949:
 #0: ffff888016af5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc900157cfd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffff8880b9927788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0xf9/0x270 kernel/sched/psi.c:876
 #3: ffffffff8cf27220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:305
 #4: ffff8880b9839618 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x56b/0xf50
3 locks held by kworker/1:20/20651:
 #0: ffff888016af5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc9000312fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffff888022316190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline]
 #2: ffff888022316190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x57b0 drivers/usb/core/hub.c:5683
4 locks held by kworker/u4:5/20842:
 #0: ffff888143a95938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90003b0fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffff888078a880e0 (&type->s_umount_key#51){++++}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:415
 #3: ffff88809964d140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2207 [inline]
 #3: ffff88809964d140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:418
3 locks held by kworker/u4:1/22111:
3 locks held by kworker/0:2/384:
 #0: ffff888016af5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90019877d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffff888144fd6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline]
 #2: ffff888144fd6190 (&dev->mutex){....}-{3:3}, at: hub_event+0x20e/0x57b0 drivers/usb/core/hub.c:5683
3 locks held by kworker/0:6/1504:
 #0: ffff888012464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc90015c8fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
 #2: ffffffff8cf2c7f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
 #2: ffffffff8cf2c7f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x479/0x8a0 kernel/rcu/tree_exp.h:948
2 locks held by kworker/1:12/1572:
 #0: ffff888012466538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
 #1: ffffc900183cfd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2264
2 locks held by syz-executor.1/4137:

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.27-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 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+0xf18/0xf60 kernel/hung_task.c:377
 kthread+0x26e/0x300 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: 4137 Comm: syz-executor.1 Not tainted 6.1.27-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline]
RIP: 0010:arch_atomic_long_try_cmpxchg include/linux/atomic/atomic-long.h:437 [inline]
RIP: 0010:atomic_long_try_cmpxchg include/linux/atomic/atomic-instrumented.h:1773 [inline]
RIP: 0010:rwsem_clear_reader_owned kernel/locking/rwsem.c:213 [inline]
RIP: 0010:__up_read+0x221/0x690 kernel/locking/rwsem.c:1348
Code: 00 e8 e3 db 76 00 48 b8 00 00 00 00 00 fc ff df 41 80 3c 04 00 74 08 4c 89 ff e8 2a da 76 00 48 8b 44 24 40 f0 49 0f b1 5d 00 <74> 1e 48 89 c3 48 b8 00 00 00 00 00 fc ff df 41 80 3c 04 00 74 96
RSP: 0018:ffffc900031ad9e0 EFLAGS: 00000246
RAX: ffff88807a3f0001 RBX: 0000000000000001 RCX: ffffffff8169348d
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900031ada20
RBP: ffffc900031ada90 R08: dffffc0000000000 R09: fffff52000635b45
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000635b44
R13: ffff888020d05860 R14: 1ffff110041a0b0c R15: ffffc900031ada20
FS:  00007fba3a4fc700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd4cd5831b8 CR3: 000000009323a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_valid_map fs/f2fs/gc.c:960 [inline]
 gc_data_segment fs/f2fs/gc.c:1511 [inline]
 do_garbage_collect+0x1c5b/0x7940 fs/f2fs/gc.c:1740
 f2fs_gc+0xc73/0x22f0 fs/f2fs/gc.c:1838
 f2fs_balance_fs+0x506/0x6c0 fs/f2fs/segment.c:419
 f2fs_write_single_data_page+0x10c9/0x1f70 fs/f2fs/data.c:2885
 f2fs_write_cache_pages fs/f2fs/data.c:3101 [inline]
 __f2fs_write_data_pages fs/f2fs/data.c:3251 [inline]
 f2fs_write_data_pages+0x1978/0x2e60 fs/f2fs/data.c:3278
 do_writepages+0x3a2/0x670 mm/page-writeback.c:2469
 filemap_fdatawrite_wbc+0x121/0x180 mm/filemap.c:388
 __filemap_fdatawrite_range mm/filemap.c:421 [inline]
 file_write_and_wait_range+0x1ca/0x2b0 mm/filemap.c:774
 f2fs_do_sync_file+0x69d/0x1c00 fs/f2fs/file.c:275
 generic_write_sync include/linux/fs.h:2897 [inline]
 f2fs_file_write_iter+0x723/0x2990 fs/f2fs/file.c:4729
 __kernel_write_iter+0x2ff/0x710 fs/read_write.c:517
 dump_emit_page fs/coredump.c:881 [inline]
 dump_user_range+0x43d/0x8e0 fs/coredump.c:908
 elf_core_dump+0x3cff/0x45b0 fs/binfmt_elf.c:2312
 do_coredump+0x18b7/0x2700 fs/coredump.c:755
 get_signal+0x1454/0x17d0 kernel/signal.c:2844
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:310
 exc_page_fault+0x4e0/0x790 arch/x86/mm/fault.c:1578
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000020000588 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fba399abf80 RCX: 00007fba3988c169
RDX: 0000000020000600 RSI: 0000000020000580 RDI: 0000000000020000
RBP: 00007fba398e7ca1 R08: 0000000020000680 R09: 0000000020000680
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffe553dbe8f R14: 00007fba3a4fc300 R15: 0000000000022000
 </TASK>