INFO: task syz-executor.4:5518 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25488 pid:5518  tgid:5490  ppid:5092   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x1796/0x4a00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 jfs_flush_journal+0x72c/0xec0 fs/jfs/jfs_logmgr.c:1564
 jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
 sync_filesystem+0x1c8/0x230 fs/sync.c:66
 jfs_remount+0x136/0x6b0 fs/jfs/super.c:432
 reconfigure_super+0x445/0x880 fs/super.c:1071
 do_remount fs/namespace.c:2892 [inline]
 path_mount+0xc29/0xfb0 fs/namespace.c:3671
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e25c7f5aa
RSP: 002b:00007f6e2697aef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6e2697af80 RCX: 00007f6e25c7f5aa
RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007f6e2697af80 R09: 0000000001a4243c
R10: 0000000001a4243c R11: 0000000000000202 R12: 00000000200000c0
R13: 00007f6e2697af40 R14: 0000000000000000 R15: 0000000020001380
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4826:
 #0: ffff88802abb70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.4/5518:
 #0: ffff88801112c0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: do_remount fs/namespace.c:2889 [inline]
 #0: ffff88801112c0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: path_mount+0xbe2/0xfb0 fs/namespace.c:3671
1 lock held by syz-executor.4/7283:
 #0: ffff88801112c0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88801112c0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:380
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6066 Comm: syz-executor.2 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:mark_usage kernel/locking/lockdep.c:4587 [inline]
RIP: 0010:__lock_acquire+0x1123/0x1fd0 kernel/locking/lockdep.c:5091
Code: 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 4d 0c 00 00 83 3b 00 0f 84 e4 fa ff ff 4c 89 ef 48 89 ee ba 07 00 00 00 eb 46 <ba> 02 00 00 00 e8 93 5a 00 00 85 c0 74 45 49 8d 9d b8 0a 00 00 48
RSP: 0018:ffffc900037a78b0 EFLAGS: 00000046
RAX: 0000000000040925 RBX: 0000000000000004 RCX: 0000000000040925
RDX: dffffc0000000000 RSI: ffff88807dcac6d8 RDI: ffff88807dcabc00
RBP: ffff88807dcac6d8 R08: ffffffff92efe627 R09: 1ffffffff25dfcc4
R10: dffffc0000000000 R11: fffffbfff25dfcc5 R12: 0000000000000001
R13: ffff88807dcabc00 R14: 1ffff1100fb958df R15: ffff88807dcac6f8
FS:  00007f89c67f66c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec9769c866 CR3: 00000000116ee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 io_cq_lock io_uring/io_uring.c:644 [inline]
 __io_cqring_overflow_flush+0x156/0x610 io_uring/io_uring.c:696
 io_cqring_do_overflow_flush io_uring/io_uring.c:722 [inline]
 io_cqring_wait io_uring/io_uring.c:2680 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3713 [inline]
 __se_sys_io_uring_enter+0x1f81/0x2b60 io_uring/io_uring.c:3603
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89c5a7dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f89c67f60c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f89c5babf80 RCX: 00007f89c5a7dea9
RDX: 0000000000400000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f89c5aca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f89c5babf80 R15: 00007fffcfc543c8
 </TASK>