INFO: task kworker/0:8:5167 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/0:8 state:D stack:21592 pid:5167 tgid:5167 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
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]
#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
4 locks held by kworker/0:2/55:
#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: ffffc9000130fd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000130fd20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff8880252f20e0 (&type->s_umount_key#24){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3:
ffff88803a625090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
2 locks held by getty/4813:
#0: ffff88801ee820a0
(&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/0:8/5167:
#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: ffffc90004d27d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc90004d27d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff88807d0460e0 (&type->s_umount_key#24){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3: ffff88803a6e3090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
7 locks held by syz-executor.1/8509:
4 locks held by syz-executor.3/8692:
1 lock held by syz-executor.3/9336:
#0: ffff8880252f20e0 (&type->s_umount_key#24){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880252f20e0 (&type->s_umount_key#24){++++}-{3:3}, at: super_lock+0x129/0x3a0 fs/super.c:117
=============================================
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: 8509 Comm: syz-executor.1 Not tainted 6.7.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
RIP: 0010:unwind_next_frame+0x1378/0x29e0 arch/x86/kernel/unwind_orc.c:585
Code: 00 4c 89 e7 e8 a9 23 00 00 48 89 c3 48 8b 44 24 30 42 80 3c 28 00 48 8b 6c 24 20 4c 8b 74 24 48 74 08 48 89 ef e8 d8 ad ac 00 <48> 89 5d 00 48 8b 44 24 58 42 80 3c 28 00 48 8b 5c 24 50 74 08 48
RSP: 0018:ffffc900000072a8 EFLAGS: 00000246
RAX: 1ffff92000000e79 RBX: ffffffff88f481e1 RCX: ffff8880283f0000
RDX: 0000000000000102 RSI: 0000000000000002 RDI: ffffc90000007858
RBP: ffffc900000073c8 R08: ffffffff813dcebe R09: ffffffff813dce17
R10: 0000000000000003 R11: ffff8880283f0000 R12: ffffc90000007858
R13: dffffc0000000000 R14: ffffc900000073d0 R15: 1ffff92000000e70
FS: 00007f1fa9baa6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32bd877000 CR3: 0000000029ca9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x1dd/0x310 mm/slub.c:3523
kmalloc_reserve+0x8a/0x260 net/core/skbuff.c:560
__alloc_skb+0x1b1/0x420 net/core/skbuff.c:651
__netdev_alloc_skb+0x105/0x540 net/core/skbuff.c:715
netdev_alloc_skb include/linux/skbuff.h:3225 [inline]
dev_alloc_skb include/linux/skbuff.h:3238 [inline]
__ieee80211_beacon_get+0x998/0x15b0 net/mac80211/tx.c:5445
ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5567
ieee80211_beacon_get include/net/mac80211.h:5442 [inline]
mac80211_hwsim_beacon_tx+0x3a4/0x7b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2260
__iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:767
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:803
mac80211_hwsim_beacon+0xd4/0x1e0 drivers/net/wireless/virtual/mac80211_hwsim.c:2290
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x59f/0xd20 kernel/time/hrtimer.c:1752
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1769
__do_softirq+0x2b8/0x939 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1b0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x20 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:console_flush_all+0x9c3/0xeb0 kernel/printk/printk.c:2973
Code: 48 21 c3 0f 85 fa 01 00 00 e8 f9 7b 1d 00 48 8b 5c 24 38 4d 85 f6 75 07 e8 ea 7b 1d 00 eb 06 e8 e3 7b 1d 00 fb 48 8b 44 24 58 <42> 0f b6 04 28 84 c0 0f 85 4a 02 00 00 0f b6 1b 31 ff 89 de e8 54
RSP: 0018:ffffc900041f6900 EFLAGS: 00000246
RAX: 1ffff9200083ed6c RBX: ffffc900041f6b60 RCX: 0000000000040000
RDX: ffffc90004919000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900041f6ab0 R08: ffffffff8170fde4 R09: 1ffffffff21bb26c
R10: dffffc0000000000 R11: fffffbfff21bb26d R12: ffffffff8e0cf340
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffffff8e0cf398
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
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: 0033:0x7f1fa8e7cce9
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:00007f1fa9baa0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1fa8f9c050 RCX: 00007f1fa8e7cce9
RDX: 00000000ffffff97 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f1fa8ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f1fa8f9c050 R15: 00007fffd583c578