INFO: task syz-executor.5:8882 blocked for more than 143 seconds.
Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24272 pid:8882 tgid:8881 ppid:5090 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_timeout+0x1bd/0x300 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2188
gfs2_fill_super+0x1d4e/0x26b0 fs/gfs2/ops_fstype.c:1316
get_tree_bdev+0x416/0x5b0 fs/super.c:1598
gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1341
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: 0033:0x7f7d5447e3ea
RSP: 002b:00007f7d55269ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7d55269f80 RCX: 00007f7d5447e3ea
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 00007f7d55269f40
RBP: 0000000020000040 R08: 00007f7d55269f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 00007f7d55269f40 R14: 000000000001274f R15: 0000000020012900
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
3 locks held by kworker/u4:3/48:
2 locks held by udevd/4514:
2 locks held by getty/4813:
#0: ffff88802a2120a0 (&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.0/5091:
#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
1 lock held by syz-executor.3/5109:
#0: ffff8880691160e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880691160e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880691160e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:516
2 locks held by kworker/1:6/5153:
#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: ffffc90004927d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc90004927d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
1 lock held by syz-executor.5/8882:
#0: ffff8880362a20e0 (&type->s_umount_key#120){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880362a20e0 (&type->s_umount_key#120){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880362a20e0 (&type->s_umount_key#120){++++}-{3:3}, at: get_tree_bdev+0x36e/0x5b0 fs/super.c:1596
1 lock held by syz-executor.1/9514:
2 locks held by syz-executor.5/9517:
1 lock held by syz-executor.2/9539:
2 locks held by syz-executor.4/9546:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #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: 12 Comm: kworker/u4:1 Not tainted 6.7.0-rc6-syzkaller-00176-g24e0d2e527a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: btrfs-cache btrfs_work_helper
RIP: 0010:__bfs_next kernel/locking/lockdep.c:1686 [inline]
RIP: 0010:__bfs kernel/locking/lockdep.c:1736 [inline]
RIP: 0010:__bfs_backwards kernel/locking/lockdep.c:1844 [inline]
RIP: 0010:check_irq_usage kernel/locking/lockdep.c:2804 [inline]
RIP: 0010:check_prev_add kernel/locking/lockdep.c:3138 [inline]
RIP: 0010:check_prevs_add kernel/locking/lockdep.c:3253 [inline]
RIP: 0010:validate_chain+0x1ce2/0x5ab0 kernel/locking/lockdep.c:3869
Code: 80 3c 20 00 74 08 4c 89 ef e8 da 8f 7c 00 49 83 c6 30 4d 8b 7d 00 48 8d bc 24 20 01 00 00 48 89 fb 48 c1 eb 03 42 80 3c 23 00 <74> 05 e8 57 90 7c 00 4c 89 bc 24 20 01 00 00 4d 39 f7 48 8b 54 24
RSP: 0018:ffffc90000117120 EFLAGS: 00000046
RAX: 1ffffffff23dd3bf RBX: 1ffff92000022e48 RCX: dffffc0000000000
RDX: ffff888017a464c0 RSI: 0000000000000008 RDI: ffffc90000117240
RBP: ffffc90000117420 R08: ffffffff90dd7377 R09: 1ffffffff21bae6e
R10: dffffc0000000000 R11: fffffbfff21bae6f R12: dffffc0000000000
R13: ffffffff91ee9df8 R14: ffffffff90aec890 R15: ffffffff91eea1e8
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000002beb1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x1345/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
raw_spin_rq_lock kernel/sched/sched.h:1349 [inline]
rq_lock kernel/sched/sched.h:1663 [inline]
ttwu_queue kernel/sched/core.c:4019 [inline]
try_to_wake_up+0x7b5/0x1440 kernel/sched/core.c:4342
autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x12d/0x1e0 kernel/sched/wait.c:106
caching_thread+0x1caf/0x1fa0 fs/btrfs/block-group.c:912
btrfs_work_helper+0x37c/0xbe0 fs/btrfs/async-thread.c:315
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