INFO: task kworker/u9:3:88 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:3    state:D stack:22648 pid:88    tgid:88    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-7:8)
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x87d/0x1080
 down_write+0x1bc/0x200
 f2fs_down_write_trace+0x34/0x1f0
 f2fs_issue_checkpoint+0x414/0x6f0
 f2fs_balance_fs_bg+0x573/0x990
 f2fs_write_node_pages+0x158/0x700
 do_writepages+0x338/0x560
 __writeback_single_inode+0x12e/0xf90
 writeback_sb_inodes+0x9de/0x1b00
 __writeback_inodes_wb+0x114/0x240
 wb_writeback+0x42f/0xad0
 wb_workfn+0xc92/0x10f0
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8694 Comm: syz.8.347 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70
Code: 89 fb e8 23 00 00 00 48 8b 3d 64 af 63 0c 48 89 de 5b e9 03 0c 62 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0d 08 ff 78 11 65 8b 15 29 ff 78
RSP: 0018:ffffc90005957238 EFLAGS: 00000246
RAX: ffffea000445b580 RBX: ffffffff8205371d RCX: 0000000000080000
RDX: ffffc90008b22000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90005957338 R08: ffffea000445b5b7 R09: 1ffffd400088b6b6
R10: dffffc0000000000 R11: fffff9400088b6b7 R12: 1ffff92000b2ae4c
R13: 0000000000000002 R14: ffffea000445b580 R15: ffffc90005957280
FS:  00007fc6bcc466c0(0000) GS:ffff8882a922d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc49d947e20 CR3: 000000016e7ac000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 filemap_get_entry+0x2d8/0x3f0
 __filemap_get_folio_mpol+0x71/0x1000
 __get_node_folio+0x20e/0xdc0
 f2fs_update_inode_page+0x82/0x2e0
 f2fs_write_checkpoint+0xc4c/0x2710
 f2fs_issue_checkpoint+0x424/0x6f0
 f2fs_do_sync_file+0xcd3/0x1960
 __x64_sys_fdatasync+0xb9/0x110
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6bbd9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc6bcc46028 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fc6bc015fa0 RCX: 00007fc6bbd9ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000a
RBP: 00007fc6bbe32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6bc016038 R14: 00007fc6bc015fa0 R15: 00007ffc01ce02c8
 </TASK>
