INFO: task syz-executor.3:5118 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:22336 pid:5118 tgid:5118 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
io_schedule+0xbe/0x130 kernel/sched/core.c:8998
bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0x112/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0xdb/0x110 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer+0x67/0x70 fs/buffer.c:71
lock_buffer include/linux/buffer_head.h:404 [inline]
hfs_mdb_commit+0x9a6/0x1290 fs/hfs/mdb.c:325
hfs_sync_fs+0x15/0x20 fs/hfs/super.c:35
sync_filesystem+0x109/0x280 fs/sync.c:56
generic_shutdown_super+0x7e/0x3d0 fs/super.c:669
kill_block_super+0x3b/0x90 fs/super.c:1667
deactivate_locked_super+0xbc/0x1a0 fs/super.c:484
deactivate_super+0xde/0x100 fs/super.c:517
cleanup_mnt+0x222/0x450 fs/namespace.c:1256
task_work_run+0x14d/0x240 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x217/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f3ec187e017
RSP: 002b:00007ffc16b672d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3ec187e017
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc16b67390
RBP: 00007ffc16b67390 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc16b68450
R13: 00007f3ec18c83b9 R14: 0000000000099c20 R15: 0000000000000003
INFO: task kworker/1:8:5172 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8 state:D stack:23648 pid:5172 tgid:5172 ppid:2 flags:0x00004000
Workqueue: events_long flush_mdb
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
io_schedule+0xbe/0x130 kernel/sched/core.c:8998
bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0x112/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0xdb/0x110 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer+0x67/0x70 fs/buffer.c:71
lock_buffer include/linux/buffer_head.h:404 [inline]
hfs_mdb_commit+0xf28/0x1290 fs/hfs/mdb.c:271
process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4817:
#0: ffff88802653d0a0 (&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+0xfc6/0x1490 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.3/5118:
#0: ffff88807ddb80e0 (&type->s_umount_key#69){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ddb80e0 (&type->s_umount_key#69){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807ddb80e0 (&type->s_umount_key#69){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:516
2 locks held by kworker/1:8/5172:
#0: ffff888013071538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2602
#1: ffffc90004967d80 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2603
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1079 Comm: kworker/u4:5 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:__lock_acquire+0xecd/0x3b20 kernel/locking/lockdep.c:5107
Code: 5a f2 ff ff 48 63 5c 24 20 be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 be f1 91 e8 db 5e 76 00 48 0f a3 1d c3 fa 89 10 <0f> 82 0d fb ff ff 90 e8 57 33 f7 02 85 c0 74 3c 48 c7 c0 b4 71 19
RSP: 0018:ffffc90004a57948 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000020 RCX: ffffffff8167c3b5
RDX: fffffbfff23e37d1 RSI: 0000000000000008 RDI: ffffffff91f1be80
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff23e37d0
R10: ffffffff91f1be87 R11: 0000000000000003 R12: ffff88801ede6478
R13: ffffed1003dbcc7f R14: ffff88801ede6400 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f44ea48 CR3: 000000000cd77000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff+0x5ac/0x14f0 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8c0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242