INFO: task kworker/0:2:896 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-syzkaller-00204-g61dabacdad4e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D
stack:26264 pid:896 ppid:2 flags:0x00004000
Workqueue: events_long flush_old_commits
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 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:2408
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2555
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:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c7984f0
(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: ffffffff8c7981f0 (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/27:
#0: ffffffff8c799100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
4 locks held by kworker/0:2/896:
#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:2379
#1: ffffc90004f27db0 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2383
#2: ffff888021e200e0 (&type->s_umount_key#41){++++}-{3:3}, at: flush_old_commits+0x7c/0x200 fs/reiserfs/super.c:97
#3: ffff88802cee4090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x79/0x100 fs/reiserfs/lock.c:27
2 locks held by getty/4753:
#0: ffff88802ce4a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
3 locks held by syz-executor787/4999:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.4.0-rc7-syzkaller-00204-g61dabacdad4e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4999 Comm: syz-executor787 Not tainted 6.4.0-rc7-syzkaller-00204-g61dabacdad4e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__lock_acquire+0x0/0x5f30 kernel/locking/lockdep.c:4944
Code: 8e e8 c4 99 71 00 e9 46 ff ff ff 48 c7 c7 ac cc 7a 8e e8 b3 99 71 00 e9 58 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <41> 57 41 89 f7 41 56 41 55 41 89 d5 48 ba 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90003abecf8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000757da7 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c6a6b00
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1cf52f2 R11: 205d393939345420 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8c6a6b00 R15: 0000000000000000
FS: 0000555556881300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561a52bf9580 CR3: 0000000079f28000 CR4: 0000000000350ee0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5705 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
console_lock_spinning_enable kernel/printk/printk.c:1858 [inline]
console_emit_next_record kernel/printk/printk.c:2871 [inline]
console_flush_all+0x472/0xcc0 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:3929
__generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4057
generic_file_write_iter+0xe3/0x350 mm/filemap.c:4089
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: 0033:0x7f02958e3769
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe7b64be68 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f02958e3769
RDX: 0000000000000001 RSI: 0000000020000480 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000f000 R11: 0000000000000246 R12: 00007ffe7b64bea0
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.670 msecs