INFO: task kworker/0:1:9 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00119-g1f874787ed9a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:23888 pid:9 tgid:9 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
reiserfs_sync_fs fs/reiserfs/super.c:76 [inline]
flush_old_commits+0x1e3/0x2f0 fs/reiserfs/super.c:111
process_one_work kernel/workqueue.c:2627 [inline]
process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
INFO: task syz-executor.2:10847 blocked for more than 144 seconds.
Not tainted 6.7.0-rc8-syzkaller-00119-g1f874787ed9a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28912 pid:10847 tgid:10826 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:802 [inline]
chown_common+0x3e0/0x850 fs/open.c:773
vfs_fchown fs/open.c:851 [inline]
ksys_fchown+0xe5/0x150 fs/open.c:862
__do_sys_fchown fs/open.c:870 [inline]
__se_sys_fchown fs/open.c:868 [inline]
__x64_sys_fchown+0x7a/0x90 fs/open.c:868
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f9167c7cce9
RSP: 002b:00007f91689ac0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005d
RAX: ffffffffffffffda RBX: 00007f9167d9c050 RCX: 00007f9167c7cce9
RDX: 0000000000000000 RSI: 000000000000ee00 RDI: 0000000000000006
RBP: 00007f9167cc947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9167d9c050 R15: 00007ffee58dca88
Showing all locks held in the system:
4 locks held by kworker/0:1/9:
#0: ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c71538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc900000e7d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc900000e7d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff888077cf80e0 (&type->s_umount_key#25){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3: ffff88801f0c2090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
1 lock held by khungtaskd/29:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4815:
#0: ffff888025af60a0 (&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+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.0/5093:
#0: ffffffff8d9334b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d9334b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
2 locks held by kworker/1:2/30353:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc90017457d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc90017457d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
8 locks held by syz-executor.2/10827:
2 locks held by syz-executor.2/10847:
#0: ffff888077cf8418 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:448
#1: ffff88803c4fcbc0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803c4fcbc0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: chown_common+0x3e0/0x850 fs/open.c:773
2 locks held by kworker/u4:3/11444:
#0: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffffc90016d57d20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc90016d57d20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
1 lock held by syz-executor.2/13016:
1 lock held by udevadm/13059:
1 lock held by syz-executor.5/13062:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller-00119-g1f874787ed9a #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+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13062 Comm: syz-executor.5 Not tainted 6.7.0-rc8-syzkaller-00119-g1f874787ed9a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:io_serial_in+0x76/0xb0 drivers/tty/serial/8250/8250_port.c:410
Code: 30 07 82 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f1 0b de fc 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 89 e9 80 e1 07 38 c1 7c ad 48 89 ef
RSP: 0018:ffffc90015766c38 EFLAGS: 00000002
RAX: 1ffffffff251f600 RBX: ffffffff928fb1c0 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff850c72b6 R09: 1ffff110038d2046
R10: dffffc0000000000 R11: ffffed10038d2047 R12: dffffc0000000000
R13: 00000000000026cc R14: 00000000000003fd R15: dffffc0000000000
FS: 00007f37f53a26c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005566fb044af8 CR3: 000000001f3b8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:117 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:139 [inline]
wait_for_lsr drivers/tty/serial/8250/8250_port.c:2081 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3366 [inline]
serial8250_console_write+0x110e/0x1820 drivers/tty/serial/8250/8250_port.c:3444
console_emit_next_record kernel/printk/printk.c:2901 [inline]
console_flush_all+0x801/0xeb0 kernel/printk/printk.c:2967
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3036
vprintk_emit+0x508/0x720 kernel/printk/printk.c:2303
_printk+0xd5/0x120 kernel/printk/printk.c:2328
__ext4_error_inode+0x48c/0x4e0 fs/ext4/super.c:869
__ext4_mark_inode_dirty+0x20c/0x870 fs/ext4/inode.c:5939
ext4_truncate+0xbb7/0x1130 fs/ext4/inode.c:4192
ext4_evict_inode+0x8fe/0xf30 fs/ext4/inode.c:258
evict+0x2a4/0x630 fs/inode.c:666
ext4_orphan_cleanup+0xb71/0x1400 fs/ext4/orphan.c:474
__ext4_fill_super fs/ext4/super.c:5591 [inline]
ext4_fill_super+0x64b0/0x6d90 fs/ext4/super.c:5712
get_tree_bdev+0x416/0x5b0 fs/super.c:1598
vfs_get_tree+0x8c/0x2a0 fs/super.c:1771
do_new_mount+0x28f/0xae0 fs/namespace.c:3337
do_mount fs/namespace.c:3677 [inline]
__do_sys_mount fs/namespace.c:3886 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f37f467e3ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 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:00007f37f53a1ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f37f53a1f80 RCX: 00007f37f467e3ea
RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007f37f53a1f40
RBP: 0000000020000040 R08: 00007f37f53a1f80 R09: 000000000000c901
R10: 000000000000c901 R11: 0000000000000202 R12: 0000000020000500
R13: 00007f37f53a1f40 R14: 00000000000004bb R15: 0000000020000280