INFO: task kworker/u4:5:3759 blocked for more than 143 seconds.
      Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5    state:D stack:22872 pid: 3759 ppid:     2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:3)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5183 [inline]
 __schedule+0x91f/0xdf0 kernel/sched/core.c:6495
 schedule+0xcb/0x190 kernel/sched/core.c:6571
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6630
 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 jfs_commit_inode+0x20d/0x5a0 fs/jfs/inode.c:102
 jfs_write_inode+0x13d/0x210 fs/jfs/inode.c:132
 write_inode fs/fs-writeback.c:1440 [inline]
 __writeback_single_inode+0x4d6/0x670 fs/fs-writeback.c:1652
 writeback_sb_inodes+0xb3b/0x18f0 fs/fs-writeback.c:1870
 __writeback_inodes_wb+0x125/0x420 fs/fs-writeback.c:1941
 wb_writeback+0x440/0x7b0 fs/fs-writeback.c:2046
 wb_check_old_data_flush fs/fs-writeback.c:2146 [inline]
 wb_do_writeback fs/fs-writeback.c:2199 [inline]
 wb_workfn+0xa78/0xef0 fs/fs-writeback.c:2227
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x425/0x450 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xcd5/0xd20 kernel/hung_task.c:369
 kthread+0x266/0x300 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: 3767 Comm: syz-fuzzer Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0033:0x415138
Code: 24 68 4c 8b ac 24 c0 00 00 00 75 0a 4c 8b 57 08 49 c1 ea 03 eb 2f 4d 85 d2 0f 84 78 03 00 00 48 89 c8 48 89 d1 31 d2 49 f7 f2 <48> 8d 50 ff 4c 0f af d2 4c 03 57 08 49 c1 ea 03 48 8b 84 24 c8 00
RSP: 002b:000000c01deeec80 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 0000000000000030 RCX: 00aaaaaaaaaaaaaa
RDX: 0000000000000000 RSI: 0000000000203009 RDI: 00000000009d4da0
RBP: 000000c01deeed80 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000010 R11: 0000000000c02b78 R12: 0000000000203009
R13: 0000000000203009 R14: 000000c000083ba0 R15: 00007fdfbc1bc094
FS:  000000c02d6f6890 GS:  0000000000000000