INFO: task kworker/0:1:9 blocked for more than 143 seconds.
Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:26480 pid:9 tgid:9 ppid:2 flags:0x00004000
Workqueue: events_long bch2_fs_read_only_work
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
journal_quiesce fs/bcachefs/journal.c:474 [inline]
journal_quiesce+0x274/0x2b0 fs/bcachefs/journal.c:472
bch2_fs_journal_stop+0xec/0x390 fs/bcachefs/journal.c:1181
__bch2_fs_read_only+0x334/0x500 fs/bcachefs/super.c:291
bch2_fs_read_only+0x9b2/0xf10 fs/bcachefs/super.c:356
bch2_fs_read_only_work+0x2c/0x40 fs/bcachefs/super.c:393
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.4:5232 blocked for more than 144 seconds.
Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:21888 pid:5232 tgid:5231 ppid:5109 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
__bch2_fs_stop+0xf4/0x540 fs/bcachefs/super.c:614
bch2_fs_stop fs/bcachefs/super.c:674 [inline]
bch2_fs_open+0x761/0x1110 fs/bcachefs/super.c:2143
bch2_mount+0xe2c/0x1230 fs/bcachefs/fs.c:1919
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8f/0x380 fs/super.c:1780
do_new_mount fs/namespace.c:3352 [inline]
path_mount+0x14e6/0x1f20 fs/namespace.c:3679
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount fs/namespace.c:3875 [inline]
__x64_sys_mount+0x297/0x320 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc8cc07e5aa
RSP: 002b:00007fc8ccd6fef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8ccd6ff80 RCX: 00007fc8cc07e5aa
RDX: 0000000020005d80 RSI: 0000000020005dc0 RDI: 00007fc8ccd6ff40
RBP: 0000000020005d80 R08: 00007fc8ccd6ff80 R09: 0000000000000480
R10: 0000000000000480 R11: 0000000000000202 R12: 0000000020005dc0
R13: 00007fc8ccd6ff40 R14: 0000000000005e05 R15: 0000000020000040
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff888015481148 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc900000e7d80 ((work_completion)(&c->read_only_work)){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffff88805c300278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_read_only_work+0x24/0x40 fs/bcachefs/super.c:392
2 locks held by kworker/1:0/25:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc900001f7d80 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
1 lock held by khungtaskd/31:
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8dbb1920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:11/2857:
#0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffff8880b9228a08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:988
1 lock held by klogd/4525:
2 locks held by getty/4844:
#0: ffff88802b5260a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-fuzzer/5084:
1 lock held by syz-executor.4/5232:
#0: ffff88805c300278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xf4/0x540 fs/bcachefs/super.c:614
1 lock held by syz-executor.2/6115:
3 locks held by syz-executor.4/7130:
#0: ffff88807abacd88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:554
#1: ffff88807abac078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x339/0x1100 net/bluetooth/hci_sync.c:5050
#2: ffffffff8f9ade68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8f9ade68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2584
1 lock held by syz-executor.3/7134:
3 locks held by syz-executor.0/7157:
#0: ffff888052230d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:554
#1: ffff888052230078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x339/0x1100 net/bluetooth/hci_sync.c:5050
#2: ffffffff8f9ade68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8f9ade68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2584
1 lock held by syz-executor.1/7160:
#0: ffffffff8dbbd0b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 31 Comm: khungtaskd Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 784 Comm: kworker/0:2 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events destroy_super_work
RIP: 0010:__bfs+0x28a/0x670 kernel/locking/lockdep.c:1737
Code: 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 50 03 00 00 4d 8b 2f 4c 39 eb 0f 84 1f fe ff ff 4d 85 ed 4d 89 ef 0f 84 13 fe ff ff <49> 8d 6f 10 48 89 ee 48 c1 ee 03 42 80 3c 36 00 0f 85 15 03 00 00
RSP: 0018:ffffc9000382f4c0 EFLAGS: 00000082
RAX: 1ffffffff28a38d5 RBX: ffffffff942aa990 RCX: 1ffffffff2725ef8
RDX: 00000000000003ff RSI: 00000000000208c3 RDI: ffffffff944f7ff8
RBP: ffffffff9451c6b8 R08: 0000000000000000 R09: ffffffff94293358
R10: 00000000000002ed R11: 00000000000003f0 R12: ffffffff816ad200
R13: ffffffff94526268 R14: dffffc0000000000 R15: ffffffff94526268
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 000000000d97a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__bfs_backwards kernel/locking/lockdep.c:1844 [inline]
check_irq_usage+0x170/0x1490 kernel/locking/lockdep.c:2804
check_prev_add kernel/locking/lockdep.c:3138 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x248e/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
__free_object+0x242/0xcb0 lib/debugobjects.c:370
__debug_check_no_obj_freed lib/debugobjects.c:994 [inline]
debug_check_no_obj_freed+0x2de/0x600 lib/debugobjects.c:1019
slab_free_hook mm/slub.c:2163 [inline]
slab_free mm/slub.c:4437 [inline]
kfree+0x284/0x3b0 mm/slub.c:4558
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244