INFO: task kworker/0:13:6818 blocked for more than 147 seconds.
Not tainted 6.3.0-next-20230428-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:13 state:D
stack:24408 pid:6818 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
reiserfs_sync_fs+0x81/0x130 fs/reiserfs/super.c:76
flush_old_commits+0xfb/0x200 fs/reiserfs/super.c:111
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff88814aa5e138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc900000e7db0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c798df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c798af0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0:
ffffffff8c799a00
(
rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6545
2 locks held by getty/4754:
#0: ffff888028cdb098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1:
ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
4 locks held by kworker/0:13/6818:
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc9000384fdb0 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffff88805e36a0e0 (&type->s_umount_key#111){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3:
ffff888043246090 (&sbi->lock){+.+.}-{3:3}
, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by kworker/0:0/13141:
#0: ffff888012472538
((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1:
ffffc90014ebfdb0 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
7 locks held by syz-executor.3/14824:
2 locks held by syz-executor.1/15442:
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6392
#1: ffffffff8c7a4e78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8c7a4e78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor.3/15448:
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6392
1 lock held by syz-executor.4/15454:
#0: ffffffff8e115fe8
(rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6392
2 locks held by dhcpcd/15456:
#0: ffff88803912ee10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#0: ffff88803912ee10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x290 net/socket.c:652
#1: ffffffff8c7a4e78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8c7a4e78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor.2/15467:
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e115fe8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6392
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-next-20230428-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14824 Comm: syz-executor.3 Not tainted 6.3.0-next-20230428-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:io_serial_in+0x87/0xa0 drivers/tty/serial/8250/8250_port.c:470
Code: a4 fc fc 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 16 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 e8 cc 7a 4f fd eb a6 e8 25 7b 4f fd eb e3
RSP: 0018:ffffc900034dec78 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff8487a950 RDI: ffffffff920d1140
RBP: ffffffff920d1100 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff241a279 R15: dffffc0000000000
FS: 00007fcb9f63f700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562859e99680 CR3: 0000000020e68000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:118 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:140 [inline]
wait_for_lsr+0xd7/0x180 drivers/tty/serial/8250/8250_port.c:2109
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3380 [inline]
serial8250_console_write+0xccf/0x1010 drivers/tty/serial/8250/8250_port.c:3458
console_emit_next_record kernel/printk/printk.c:2877 [inline]
console_flush_all+0x49c/0xcc0 kernel/printk/printk.c:2933
console_unlock+0xb8/0x1f0 kernel/printk/printk.c:3007
vprintk_emit+0x1bd/0x600 kernel/printk/printk.c:2307
vprintk+0x84/0xa0 kernel/printk/printk_safe.c:50
_printk+0xbf/0xf0 kernel/printk/printk.c:2328
__reiserfs_warning+0xf9/0x190 fs/reiserfs/prints.c:290
reiserfs_read_bitmap_block+0x196/0x520 fs/reiserfs/bitmap.c:1434
scan_bitmap_block.constprop.0+0x1dc/0xfd0 fs/reiserfs/bitmap.c:164
scan_bitmap fs/reiserfs/bitmap.c:402 [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+0x2c9c/0x5790 fs/reiserfs/bitmap.c:1375
reiserfs_new_unf_blocknrs fs/reiserfs/reiserfs.h:3361 [inline]
_allocate_block fs/reiserfs/inode.c:645 [inline]
reiserfs_get_block+0x9da/0x4100 fs/reiserfs/inode.c:756
__block_write_begin_int+0x3bd/0x14b0 fs/buffer.c:2064
reiserfs_write_begin+0x36e/0xa60 fs/reiserfs/inode.c:2773
generic_perform_write+0x256/0x570 mm/filemap.c:3923
__generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4051
generic_file_write_iter+0xe3/0x350 mm/filemap.c:4083
call_write_iter include/linux/fs.h:1868 [inline]
do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
do_iter_write+0x185/0x7e0 fs/read_write.c:860
vfs_writev+0x1aa/0x670 fs/read_write.c:933
do_pwritev+0x1b6/0x270 fs/read_write.c:1030
__do_sys_pwritev2 fs/read_write.c:1089 [inline]
__se_sys_pwritev2 fs/read_write.c:1080 [inline]
__x64_sys_pwritev2+0xef/0x150 fs/read_write.c:1080
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcb9e88c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcb9f63f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fcb9e9abf80 RCX: 00007fcb9e88c169
RDX: 0000000000000001 RSI: 0000000020001f80 RDI: 0000000000000004
RBP: 00007fcb9e8e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd5cd9a3cf R14: 00007fcb9f63f300 R15: 0000000000022000