INFO: task kworker/0:3:30101 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D
stack:23568 pid:30101 tgid:30101 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.2:17197 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D
stack:28752 pid:17197 tgid:17171 ppid:5095 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]
generic_file_write_iter+0x83/0x310 mm/filemap.c:4045
call_write_iter include/linux/fs.h:2020 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x792/0xb20 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
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: 0033:0x7f412427cce9
RSP: 002b:00007f4122ddd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f412439c050 RCX: 00007f412427cce9
RDX: 000000000000001d RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00007f41242c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f412439c050 R15: 00007ffeb0e14038
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0:
ffffffff8d92dae0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4816:
#0:
ffff88802a4190a0 (&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
4 locks held by kworker/0:3/30101:
#0:
ffff888012c71538
((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
((wq_completion)events_long){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc9000caffd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000caffd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2:
ffff88803bb700e0 (&type->s_umount_key#24){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3: ffff8880396e3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
7 locks held by syz-executor.2/17172:
3 locks held by syz-executor.2/17197:
#0:
ffff888079d20ac8
(
&f->f_pos_lock
){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
#1: ffff88803bb70418 (sb_writers#15){.+.+}-{0:0}, at: vfs_write+0x223/0xb20 fs/read_write.c:580
#2: ffff88808f914bc0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff88808f914bc0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: generic_file_write_iter+0x83/0x310 mm/filemap.c:4045
2 locks held by syz-executor.3/19088:
#0:
ffff88803bb700e0
(&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
(&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117
#1: ffff8880396e3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17172 Comm: syz-executor.2 Not tainted 6.7.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:number+0x29b/0xf90 lib/vsprintf.c:498
Code: f6 48 83 7c 24 40 01 48 8b 44 24 18 83 d0 ff 48 89 44 24 18 49 bd 00 00 00 00 00 fc ff df 41 80 e4 20 48 c1 eb 28 48 89 1c 24 <0f> b6 db 4c 89 f7 48 89 de e8 17 3f 7d f6 49 39 de 4c 89 64 24 20
RSP: 0018:ffffc900037ae1a0 EFLAGS: 00000a06
RAX: ffffffff8b113cab RBX: 0000000000ffff0a RCX: ffff88807d135940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900037ae2b0 R08: ffffffff8b113b88 R09: 0000000000000000
R10: ffffc900037ae220 R11: fffff520006f5c47 R12: 00000000ffff0a00
R13: dffffc0000000000 R14: 00000000000c3859 R15: ffffc900037ae607
FS: 00007f4122dfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564e83ad7030 CR3: 000000001d584000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2890
sprintf+0xda/0x120 lib/vsprintf.c:3028
print_time kernel/printk/printk.c:1324 [inline]
info_print_prefix+0x16b/0x300 kernel/printk/printk.c:1350
record_print_text kernel/printk/printk.c:1399 [inline]
printk_get_next_message+0x408/0xce0 kernel/printk/printk.c:2828
console_emit_next_record kernel/printk/printk.c:2868 [inline]
console_flush_all+0x42a/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
__reiserfs_warning+0x153/0x1a0 fs/reiserfs/prints.c:290
reiserfs_read_bitmap_block+0x236/0x6d0 fs/reiserfs/bitmap.c:1434
scan_bitmap_block+0x1a1/0xff0 fs/reiserfs/bitmap.c:164
scan_bitmap fs/reiserfs/bitmap.c:391 [inline]
allocate_without_wrapping_disk fs/reiserfs/bitmap.c:1161 [inline]
blocknrs_and_prealloc_arrays_from_search_start fs/reiserfs/bitmap.c:1274 [inline]
reiserfs_allocate_blocknrs+0x2b0a/0x5070 fs/reiserfs/bitmap.c:1375
reiserfs_get_block+0x3280/0x5130 fs/reiserfs/inode.c:756
__block_write_begin_int+0x54d/0x1ad0 fs/buffer.c:2119
reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2767
generic_perform_write+0x31b/0x630 mm/filemap.c:3927
generic_file_write_iter+0xaf/0x310 mm/filemap.c:4048
do_iter_readv_writev+0x330/0x4a0
do_iter_write+0x1f6/0x8d0 fs/read_write.c:860
vfs_writev fs/read_write.c:933 [inline]
do_pwritev+0x21a/0x360 fs/read_write.c:1030
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: 0033:0x7f412427cce9
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:00007f4122dfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f412439bf80 RCX: 00007f412427cce9
RDX: 0000000000000001 RSI: 0000000020001180 RDI: 0000000000000005
RBP: 00007f41242c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f412439bf80 R15: 00007ffeb0e14038