INFO: task khugepaged:36 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged state:D stack:28080 pid:36 tgid:36 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
__lru_add_drain_all+0x69/0x740 mm/swap.c:867
khugepaged_do_scan mm/khugepaged.c:2499 [inline]
khugepaged+0x109/0x17c0 mm/khugepaged.c:2568
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task jbd2/sda1-8:4492 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:26160 pid:4492 tgid:4492 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
io_schedule+0xbf/0x130 kernel/sched/core.c:9044
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:209
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer+0x64/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:389 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x4824/0x65d0 fs/jbd2/commit.c:888
kjournald2+0x1f8/0x8f0 fs/jbd2/journal.c:201
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.4:5555 blocked for more than 144 seconds.
Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23744 pid:5555 tgid:5555 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2558
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_work+0x5c4/0xb10 kernel/workqueue.c:4218
__lru_add_drain_all+0x52c/0x740 mm/swap.c:912
invalidate_bdev+0x9a/0xd0 block/bdev.c:95
ext4_put_super+0x535/0xdd0 fs/ext4/super.c:1361
generic_shutdown_super+0x159/0x3d0 fs/super.c:641
kill_block_super+0x3b/0x90 fs/super.c:1675
ext4_kill_sb+0x6a/0xb0 fs/ext4/super.c:7327
deactivate_locked_super+0xbe/0x1a0 fs/super.c:472
deactivate_super+0xde/0x100 fs/super.c:505
cleanup_mnt+0x222/0x450 fs/namespace.c:1267
task_work_run+0x14e/0x250 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac8e07efd7
RSP: 002b:00007ffdcf2602d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fac8e07efd7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdcf260390
RBP: 00007ffdcf260390 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdcf261450
R13: 00007fac8e0c83b9 R14: 000000000003eb1c R15: 0000000000000003
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
1 lock held by khugepaged/36:
#0: ffffffff8d8cdf88 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:867
2 locks held by getty/4831:
#0: ffff88802ac660a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.4/5555:
#0: ffff888021fac0e0 (&type->s_umount_key#52){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888021fac0e0 (&type->s_umount_key#52){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888021fac0e0 (&type->s_umount_key#52){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:504
#1: ffffffff8d8cdf88 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:867
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:380
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6804 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:mark_usage kernel/locking/lockdep.c:4566 [inline]
RIP: 0010:__lock_acquire+0x1256/0x3b30 kernel/locking/lockdep.c:5091
Code: ff 65 8b 05 14 cf 96 7e 85 c0 0f 85 0f 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 7c 24 48 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 44 60 7d 00
RSP: 0018:ffffc90000a08be0 EFLAGS: 00000803
RAX: dffffc0000000000 RBX: ffff88801f3e64fa RCX: 1ffffffff27bc51a
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88801f3e64bc
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff27bba31
R10: ffffffff93ddd18f R11: 0000000000000002 R12: 0000000000000002
R13: 0000000000000000 R14: ffff88801f3e64d8 R15: 0000000000000002
FS: 00007f7e335896c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7e33588f00 CR3: 000000006b30e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1696 [inline]
__hrtimer_run_queues+0x2c0/0xcc0 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 6a 98 8c f6 48 89 df e8 c2 14 8d f6 e8 ed 98 b5 f6 fb bf 01 00 00 00 b2 4f 7e f6 65 8b 05 b3 88 24 75 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc90004027cf0 EFLAGS: 00000202
RAX: 0000000005a28107 RBX: ffff8880173a0000 RCX: 1ffffffff1f3e269
RDX: 0000000000000000 RSI: ffffffff8b0cae00 RDI: 0000000000000001
RBP: ffff8880173a0400 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9f55d7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000021 R14: ffff8880173a0000 R15: ffff8880173a0000
spin_unlock_irq include/linux/spinlock.h:401 [inline]
get_signal+0x1e3e/0x2710 kernel/signal.c:2914
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e3287dca9
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:00007f7e335890c8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f7e329abf80 RCX: 00007f7e3287dca9
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7e328c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7e329abf80 R15: 00007ffe21345698