INFO: task syz-executor.0:5308 blocked for more than 143 seconds.
      Not tainted 6.3.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D
 stack:21400 pid:5308  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x187b/0x4900 kernel/sched/core.c:6669
 schedule+0xc3/0x180 kernel/sched/core.c:6745
 wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:192
 sync_inodes_sb+0x297/0xab0 fs/fs-writeback.c:2730
 sync_filesystem+0x16f/0x220 fs/sync.c:64
 generic_shutdown_super+0x6f/0x340 fs/super.c:473
 kill_block_super+0x84/0xf0 fs/super.c:1407
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 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:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0x90 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f267908d567
RSP: 002b:00007ffcb8147278 EFLAGS: 00000246
 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f267908d567
RDX: 00007ffcb8147349 RSI: 000000000000000a RDI: 00007ffcb8147340
RBP: 00007ffcb8147340 R08: 00000000ffffffff R09: 00007ffcb8147110
R10: 0000555555917893 R11: 0000000000000246 R12: 00007f26790e6b74
R13: 00007ffcb8148400 R14: 0000555555917810 R15: 00007ffcb8148440
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: 
ffffffff8cf24930
 (
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/13:
 #0: 
ffffffff8cf24cf0
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
 #0: 
ffffffff8cf24760
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:4/997:
 #0: 
ffff88801679b938
 (
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
 #1: 
ffffc9000509fd20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
 #2: 
ffff8880292aa650
 (
sb_internal
#2
){.+.+}-{0:0}
, at: native_irq_enable arch/x86/include/asm/irqflags.h:42 [inline]
, at: arch_local_irq_enable arch/x86/include/asm/irqflags.h:77 [inline]
, at: arch_local_irq_restore arch/x86/include/asm/irqflags.h:135 [inline]
, at: console_trylock_spinning+0x3b4/0x460 kernel/printk/printk.c:1972
 #3: 
ffff888072a61858
 (
&xfs_nondir_ilock_class
#3
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x295/0x1310 fs/xfs/libxfs/xfs_bmap.c:4526
2 locks held by getty/4709:
 #0: 
ffff88802c4ea098
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900015802f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
6 locks held by kworker/0:4/4970:
2 locks held by syz-executor.0/5308:
 #0: 
ffff8880292aa0e0
 (
&type->s_umount_key
#50
){+.+.}-{3:3}
, at: deactivate_super+0xad/0xf0 fs/super.c:361
 #1: 
ffff88801e60e7d0
 (
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-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+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x187/0x2e0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xec2/0xf00 kernel/hung_task.c:379
 kthread+0x2b2/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4970 Comm: kworker/0:4 Not tainted 6.3.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: xfs-buf/loop0 xfs_buf_ioend_work
RIP: 0010:hlist_move_list include/linux/list.h:1029 [inline]
RIP: 0010:collect_expired_timers kernel/time/timer.c:1772 [inline]
RIP: 0010:__run_timers+0x359/0x860 kernel/time/timer.c:2008
Code: 48 8b 14 24 48 89 1a 48 85 db 74 38 e8 60 78 10 00 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 1d 2b 68 00 48 8b 0c 24 48 89 0b eb 10 e8 2f 78
RSP: 0018:ffffc90000007ca0 EFLAGS: 00000046
RAX: 1ffff1102949c903 RBX: ffff88814a4e4818 RCX: dffffc0000000000
RDX: 0000000080000102 RSI: 0000000000000023 RDI: 0000000000000201
RBP: ffffc90000007df0 R08: ffffffff81799aac R09: ffffed10173052bd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9829738
R13: 00000000ffffe6a3 R14: 0000000000000000 R15: 1ffff110173052e7
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560a6dcbb600 CR3: 000000002c182000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
 __do_softirq+0x2ab/0x908 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x159/0x240 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_trylock_spinning+0x3b8/0x460
Code: ed 0f 84 48 ff ff ff e8 26 83 1c 00 fb 31 db eb 45 e8 1c 83 1c 00 e8 17 52 39 09 4d 85 ed 74 cd e8 0d 83 1c 00 fb f3 0f 1e fa <bb> 01 00 00 00 48 c7 c7 60 04 e0 8c 31 f6 ba 01 00 00 00 31 c9 41
RSP: 0018:ffffc9000418f7c0 EFLAGS: 00000293
RAX: ffffffff816d9073 RBX: 0000000000000000 RCX: ffff88807dc6d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000418f888 R08: ffffffff816d902c R09: fffffbfff205fe3d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000831ef8
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
 vprintk_emit+0xbc/0x1f0 kernel/printk/printk.c:2306
 _printk+0xd5/0x120 kernel/printk/printk.c:2328
 print_hex_dump+0x1a6/0x250 lib/hexdump.c:285
 xfs_hex_dump+0x3d/0x50 fs/xfs/xfs_message.c:110
 xfs_buf_verifier_error+0x1ce/0x2a0 fs/xfs/xfs_error.c:460
 xfs_allocbt_read_verify+0x5a/0xd0
 xfs_buf_ioend+0x270/0x6f0 fs/xfs/xfs_buf.c:1302
 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
 kthread+0x2b2/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>