INFO: task syz-executor.4:5068 blocked for more than 143 seconds.
      Not tainted 6.6.0-rc1-syzkaller-00072-gaed8aee11130 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:21320 pid:5068  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6695
 schedule+0xc3/0x180 kernel/sched/core.c:6771
 wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:192
 __writeback_inodes_sb_nr+0x2d2/0x370 fs/fs-writeback.c:2650
 sync_filesystem+0xa4/0x220 fs/sync.c:54
 generic_shutdown_super+0x72/0x2c0 fs/super.c:666
 kill_block_super+0x41/0x70 fs/super.c:1646
 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4883
 deactivate_locked_super+0xa4/0x110 fs/super.c:481
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fed4a67de17
RSP: 002b:00007ffda83a5308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fed4a67de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffda83a53c0
RBP: 00007ffda83a53c0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffda83a6480
R13: 00007fed4a6c73b9 R14: 00000000000f6575 R15: 0000000000000009
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-syzkaller-00072-gaed8aee11130 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xdf5/0xe40 kernel/hung_task.c:379
 kthread+0x2b8/0x350 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.6.0-rc1-syzkaller-00072-gaed8aee11130 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: writeback wb_workfn (flush-7:4)
RIP: 0010:format_decode+0x11e2/0x1bb0 lib/vsprintf.c:2612
Code: 48 8b 4c 24 18 80 e1 07 38 c1 0f 8c 16 ef ff ff be 08 00 00 00 48 8b 7c 24 18 e8 49 d6 23 f7 e9 02 ef ff ff 44 89 e1 80 e1 07 <38> c1 0f 8c b7 f6 ff ff 4c 89 e7 e8 ee d4 23 f7 e9 aa f6 ff ff 48
RSP: 0018:ffffc90000115da0 EFLAGS: 00000202
RAX: 0000000000000005 RBX: 0000000000000063 RCX: 000000008b0b6401
RDX: 0000000000000000 RSI: 0000000000000063 RDI: 000000000000002e
RBP: ffffc90000115e90 R08: ffffffff8ac3ae77 R09: ffffffff8ac3b0ca
R10: 0000000000000005 R11: ffff888015e55940 R12: ffffffff8b0b6421
R13: ffffc90000115e20 R14: dffffc0000000000 R15: ffff0000ffffff00
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560a6a233600 CR3: 0000000026689000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 vsnprintf+0x14a/0x1d80 lib/vsprintf.c:2770
 snprintf+0xda/0x120 lib/vsprintf.c:2953
 print_caller kernel/printk/printk.c:1336 [inline]
 info_print_prefix+0x1f0/0x300 kernel/printk/printk.c:1355
 record_print_text kernel/printk/printk.c:1402 [inline]
 printk_get_next_message+0x408/0xce0 kernel/printk/printk.c:2842
 console_emit_next_record kernel/printk/printk.c:2877 [inline]
 console_flush_all+0x3ac/0xd50 kernel/printk/printk.c:2966
 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3035
 vprintk_emit+0xda/0x1f0 kernel/printk/printk.c:2307
 _printk+0xd5/0x120 kernel/printk/printk.c:2332
 bio_check_eod block/blk-core.c:531 [inline]
 submit_bio_noacct+0x11a5/0x1b70 block/blk-core.c:740
 f2fs_submit_page_read+0x163/0x190 fs/f2fs/data.c:1178
 f2fs_get_read_data_page+0x50e/0x850 fs/f2fs/data.c:1348
 f2fs_get_lock_data_page+0x52/0xe0 fs/f2fs/data.c:1396
 move_data_page fs/f2fs/gc.c:1432 [inline]
 gc_data_segment fs/f2fs/gc.c:1641 [inline]
 do_garbage_collect+0x3941/0x8130 fs/f2fs/gc.c:1766
 f2fs_gc+0xeff/0x3160 fs/f2fs/gc.c:1869
 f2fs_balance_fs+0x549/0x730 fs/f2fs/segment.c:439
 f2fs_write_inode+0x41b/0x4a0 fs/f2fs/inode.c:823
 write_inode fs/fs-writeback.c:1456 [inline]
 __writeback_single_inode+0x69b/0xfa0 fs/fs-writeback.c:1668
 writeback_sb_inodes+0x8e3/0x11d0 fs/fs-writeback.c:1894
 wb_writeback+0x44d/0xc60 fs/fs-writeback.c:2070
 wb_do_writeback fs/fs-writeback.c:2217 [inline]
 wb_workfn+0x400/0xff0 fs/fs-writeback.c:2257
 process_one_work+0x781/0x1130 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0xabf/0x1060 kernel/workqueue.c:2784
 kthread+0x2b8/0x350 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>