INFO: task kworker/u4:1:12 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00017-g29cd507cbec2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1    state:D stack:20080 pid:12    tgid:12    ppid:2      flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1ae/0x200 kernel/locking/rwsem.c:1306
 f2fs_down_write fs/f2fs/f2fs.h:2138 [inline]
 f2fs_balance_fs+0x500/0x730 fs/f2fs/segment.c:437
 f2fs_write_inode+0x3f0/0x470 fs/f2fs/inode.c:794
 write_inode fs/fs-writeback.c:1473 [inline]
 __writeback_single_inode+0x69f/0xfd0 fs/fs-writeback.c:1690
 writeback_sb_inodes+0x8e3/0x1220 fs/fs-writeback.c:1916
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1987
 wb_writeback+0x461/0xc80 fs/fs-writeback.c:2094
 wb_check_background_flush fs/fs-writeback.c:2164 [inline]
 wb_do_writeback fs/fs-writeback.c:2252 [inline]
 wb_workfn+0xc33/0xfb0 fs/fs-writeback.c:2279
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
INFO: task syz-executor.0:14894 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00017-g29cd507cbec2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:26832 pid:14894 tgid:14829 ppid:5081   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common+0x1ae/0x200 kernel/locking/rwsem.c:1306
 inode_lock include/linux/fs.h:804 [inline]
 process_measurement+0x44d/0x21d0 security/integrity/ima/ima_main.c:248
 ima_file_check+0xf1/0x170 security/integrity/ima/ima_main.c:557
 do_open fs/namei.c:3647 [inline]
 path_openat+0x28b6/0x3240 fs/namei.c:3802
 do_filp_open+0x234/0x490 fs/namei.c:3829
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1404
 do_sys_open fs/open.c:1419 [inline]
 __do_sys_open fs/open.c:1427 [inline]
 __se_sys_open fs/open.c:1423 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1423
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f2b8987dda9
RSP: 002b:00007f2b8a5360c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f2b899ac120 RCX: 00007f2b8987dda9
RDX: 0000000000000000 RSI: 0000000000024000 RDI: 0000000020000180
RBP: 00007f2b898ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2b899ac120 R15: 00007ffe18a14f38
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:1/9:
4 locks held by kworker/u4:1/12:
 #0: ffff888018ad5d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888018ad5d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc90000117d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc90000117d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffff88807ed9c0e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:561
 #3: ffff88802d1352a8 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2138 [inline]
 #3: ffff88802d1352a8 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x500/0x730 fs/f2fs/segment.c:437
1 lock held by khungtaskd/29:
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/1:2/926:
 #0: ffff888014c7a538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888014c7a538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc90003bffd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc90003bffd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
4 locks held by kworker/u4:8/2879:
2 locks held by getty/4805:
 #0: ffff88802abdd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.2/5091:
 #0: ffffffff8e136578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
 #0: ffffffff8e136578 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:995
5 locks held by syz-executor.0/14831:
1 lock held by syz-executor.0/14894:
 #0: ffff88804bb259c0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
 #0: ffff88804bb259c0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: process_measurement+0x44d/0x21d0 security/integrity/ima/ima_main.c:248
1 lock held by syz-executor.4/17386:

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

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller-00017-g29cd507cbec2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 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:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17429 Comm: syz-executor.3 Not tainted 6.8.0-rc7-syzkaller-00017-g29cd507cbec2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0033:0x7f897462983b
Code: cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 <45> 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83
RSP: 002b:00007f89753cc530 EFLAGS: 00000202
RAX: 000000000015b1a3 RBX: 00007f89753cc5d0 RCX: 00000000000000a3
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f89753cc670
RBP: 0000000000000102 R08: 00007f896ac00000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007f89753cc5e0 R12: 0000000000000001
R13: 00007f89746ecd00 R14: 0000000000000000 R15: 00007f89753cc670
FS:  00007f89753cd6c0 GS:  0000000000000000