INFO: task syz-executor.0:2380 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:13400 pid:2380 tgid:2380 ppid:1979 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x613/0x9b0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_timeout+0x88/0x190 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common+0xfa/0x1c0 kernel/sched/completion.c:127
__flush_workqueue+0x313/0x5a0 kernel/workqueue.c:3310
drain_workqueue+0x7f/0x120 kernel/workqueue.c:3423
destroy_workqueue+0x57/0x3c0 kernel/workqueue.c:4916
hci_release_dev+0x69/0x5a0 net/bluetooth/hci_core.c:2774
bt_host_release+0x2c/0x40 net/bluetooth/hci_sysfs.c:94
device_release+0x31/0x70
kobject_cleanup lib/kobject.c:682 [inline]
kobject_release lib/kobject.c:716 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x61/0x180 lib/kobject.c:733
hci_uart_tty_close+0xa5/0x120 drivers/bluetooth/hci_ldisc.c:552
tty_ldisc_close drivers/tty/tty_ldisc.c:455 [inline]
tty_ldisc_kill+0x66/0xc0 drivers/tty/tty_ldisc.c:607
tty_ldisc_release+0x10c/0x120 drivers/tty/tty_ldisc.c:775
tty_release_struct+0x10/0x80 drivers/tty/tty_io.c:1692
tty_release+0x501/0x660 drivers/tty/tty_io.c:1863
__fput+0xf4/0x290 fs/file_table.c:376
__do_sys_close fs/open.c:1554 [inline]
__se_sys_close+0x6a/0xc0 fs/open.c:1539
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f2cc6c7cc9a
RSP: 002b:00007ffd59c44210 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f2cc6c7cc9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000032 R08: 0000001b2f560000 R09: 00007f2cc6dabf8c
R10: 00007ffd59c44360 R11: 0000000000000293 R12: 00007f2cc68001d8
R13: ffffffffffffffff R14: 00007f2cc6800000 R15: 000000000000a37f
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff83b7ec80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff83b7ec80 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff83b7ec80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614
2 locks held by getty/1414:
#0: ffff888100e8f8a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90002c872f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x242/0x910 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.0/2380:
#0: ffff88810abc28a0 (&tty->ldisc_sem){....}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:289 [inline]
#0: ffff88810abc28a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:352 [inline]
#0: ffff88810abc28a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:366 [inline]
#0: ffff88810abc28a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_release+0xa7/0x120 drivers/tty/tty_ldisc.c:774
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 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+0x5da/0x600 kernel/hung_task.c:379
kthread+0xe9/0x100 kernel/kthread.c:388
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 527 Comm: kworker/u4:4 Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__default_send_IPI_dest_field+0x3e/0x60 arch/x86/kernel/apic/ipi.c:186
Code: 5f ff 00 10 00 00 74 0f f3 90 f7 04 25 00 c3 5f ff 00 10 00 00 75 f1 c1 e5 18 89 2c 25 10 c3 5f ff 09 de 89 34 25 00 c3 5f ff <5b> 5d c3 cc cc cc cc e8 16 ff ff ff be 00 04 00 00 eb da 66 2e 0f
RSP: 0018:ffffc900016abc08 EFLAGS: 00000002
RAX: 8a1a8314aab2ba00 RBX: 0000000000000800 RCX: ffff8881012cb700
RDX: 0000000000000800 RSI: 00000000000008fb RDI: 0000000000000002
RBP: 0000000002000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff810663b0 R12: ffffffff8103dbe0
R13: ffff888237d34b80 R14: 0000000000000000 R15: ffff888237c30480
FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa273dbd58 CR3: 0000000003a44000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:36 [inline]
flat_send_IPI_mask+0x34/0x80 arch/x86/kernel/apic/apic_flat_64.c:44
arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:101 [inline]
send_call_function_single_ipi kernel/smp.c:117 [inline]
smp_call_function_many_cond+0x57a/0xae0 kernel/smp.c:837
on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2087 [inline]
text_poke_bp_batch+0x21c/0x310 arch/x86/kernel/alternative.c:2359
text_poke_flush arch/x86/kernel/alternative.c:2488 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2495
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked kernel/jump_label.c:205 [inline]
static_key_enable+0x40/0x60 kernel/jump_label.c:218
toggle_allocation_gate+0x3a/0x130 mm/kfence/core.c:826
process_one_work kernel/workqueue.c:2742 [inline]
process_scheduled_works+0x250/0x500 kernel/workqueue.c:2818
worker_thread+0x23d/0x300 kernel/workqueue.c:2899
kthread+0xe9/0x100 kernel/kthread.c:388
ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242