INFO: task syz-executor.3:5553 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:28592 pid:5553  tgid:5549  ppid:5393   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __fdget_pos+0x24e/0x310 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 __do_sys_getdents64 fs/readdir.c:405 [inline]
 __se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc21a07dda9
RSP: 002b:00007fc21ae590c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fc21a1ac050 RCX: 00007fc21a07dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fc21a0ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc21a1ac050 R15: 00007fffd747bd58
 </TASK>
INFO: task syz-executor.4:5566 blocked for more than 144 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:29456 pid:5566  tgid:5560  ppid:5398   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __fdget_pos+0x24e/0x310 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 __do_sys_getdents64 fs/readdir.c:405 [inline]
 __se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd61bc7dda9
RSP: 002b:00007fd61c90b0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fd61bdac050 RCX: 00007fd61bc7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fd61bcca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fd61bdac050 R15: 00007ffc740b3298
 </TASK>
INFO: task syz-executor.2:5589 blocked for more than 145 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:29456 pid:5589  tgid:5582  ppid:5392   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __fdget_pos+0x24e/0x310 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 __do_sys_getdents64 fs/readdir.c:405 [inline]
 __se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe53ca7dda9
RSP: 002b:00007fe53d75e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fe53cbac050 RCX: 00007fe53ca7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fe53caca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe53cbac050 R15: 00007ffff00748b8
 </TASK>
INFO: task syz-executor.1:5601 blocked for more than 145 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:29456 pid:5601  tgid:5593  ppid:5406   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __fdget_pos+0x24e/0x310 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 __do_sys_getdents64 fs/readdir.c:405 [inline]
 __se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2ec5e7dda9
RSP: 002b:00007f2ec6c6d0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f2ec5fac050 RCX: 00007f2ec5e7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f2ec5eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2ec5fac050 R15: 00007ffd9c1db6e8
 </TASK>
INFO: task syz-executor.0:5599 blocked for more than 146 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:28976 pid:5599  tgid:5594  ppid:5394   flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 __fdget_pos+0x24e/0x310 fs/file.c:1191
 fdget_pos include/linux/file.h:76 [inline]
 __do_sys_getdents64 fs/readdir.c:405 [inline]
 __se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f5647dda9
RSP: 002b:00007f8f571060c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f8f565ac050 RCX: 00007f8f5647dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f8f564ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f565ac050 R15: 00007ffe450f52f8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:2/35:
2 locks held by getty/4830:
 #0: ffff88802aeb60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.3/5550:
1 lock held by syz-executor.3/5553:
 #0: ffff88802d2bf748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
3 locks held by syz-executor.4/5562:
1 lock held by syz-executor.4/5566:
 #0: ffff8880292ff748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
3 locks held by syz-executor.2/5583:
1 lock held by syz-executor.2/5589:
 #0: ffff8880294399c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
3 locks held by syz-executor.1/5595:
1 lock held by syz-executor.1/5601:
 #0: ffff88807f924fc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
4 locks held by syz-executor.0/5596:
1 lock held by syz-executor.0/5599:
 #0: ffff888021fdfc48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
1 lock held by syz-executor.0/5861:
1 lock held by syz-executor.0/10664:
 #0: ffff8880b953e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
5 locks held by syz-executor.1/10666:

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

NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 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: 10672 Comm: syz-executor.1 Not tainted 6.10.0-rc2-syzkaller-00366-g771ed66105de #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:ext4_has_metadata_csum fs/ext4/ext4.h:3275 [inline]
RIP: 0010:__ext4_read_dirblock+0x533/0x880 fs/ext4/namei.c:178
Code: 5d 00 bd 00 04 00 00 be 00 04 00 00 21 de 31 ff e8 a2 82 37 ff 21 dd 75 0a e8 59 7e 37 ff e9 7c fc ff ff 49 81 c6 48 07 00 00 <4c> 89 f0 48 c1 e8 03 48 bb 00 00 00 00 00 fc ff df 80 3c 18 00 74
RSP: 0018:ffffc900097778d0 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 000000000000046b RCX: ffff8880235dda00
RDX: ffff8880235dda00 RSI: 0000000000000400 RDI: 0000000000000000
RBP: 0000000000000400 R08: ffffffff825ea7ae R09: 1ffff1100bf0e64a
R10: dffffc0000000000 R11: ffffed100bf0e64b R12: ffff88805f8734b0
R13: ffff88806fb1f570 R14: ffff88802fa6e748 R15: ffff88802fa6c638
FS:  0000555578587480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd2346f020 CR3: 0000000077dfc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 ext4_add_entry+0x78c/0x25d0 fs/ext4/namei.c:2433
 ext4_add_nondir+0x8d/0x290 fs/ext4/namei.c:2792
 ext4_symlink+0x920/0xb50 fs/ext4/namei.c:3433
 vfs_symlink+0x137/0x2e0 fs/namei.c:4489
 do_symlinkat+0x222/0x3a0 fs/namei.c:4515
 __do_sys_symlinkat fs/namei.c:4531 [inline]
 __se_sys_symlinkat fs/namei.c:4528 [inline]
 __x64_sys_symlinkat+0x99/0xb0 fs/namei.c:4528
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f05c307d527
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 01 00 00 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:00007ffd2346ef58 EFLAGS: 00000206 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007ffd2346f020 RCX: 00007f05c307d527
RDX: 00007f05c30ca51b RSI: 00000000ffffff9c RDI: 00007f05c30c950e
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
 </TASK>