INFO: task krfcommd:2707 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-12817-gcffb2b72d3ed #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:krfcommd state:D stack:29080 pid: 2707 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6513
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673
__mutex_lock kernel/locking/mutex.c:733 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785
rfcomm_process_sessions+0x21/0x3f0 net/bluetooth/rfcomm/core.c:2015
rfcomm_run+0x195/0x2c0 net/bluetooth/rfcomm/core.c:2122
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task syz-executor418:3631 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-12817-gcffb2b72d3ed #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor418 state:D stack:26552 pid: 3631 ppid: 3625 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0x937/0x1090 kernel/sched/core.c:6382
schedule+0xeb/0x1b0 kernel/sched/core.c:6454
__lock_sock+0x1cf/0x330 net/core/sock.c:2770
lock_sock_nested+0x9f/0x100 net/core/sock.c:3317
lock_sock include/net/sock.h:1682 [inline]
rfcomm_sk_state_change+0x63/0x300 net/bluetooth/rfcomm/sock.c:73
__rfcomm_dlc_close+0x2cc/0x480 net/bluetooth/rfcomm/core.c:489
rfcomm_dlc_close+0x10d/0x1c0 net/bluetooth/rfcomm/core.c:520
__rfcomm_sock_close+0x101/0x220 net/bluetooth/rfcomm/sock.c:220
rfcomm_sock_shutdown+0xa5/0x220 net/bluetooth/rfcomm/sock.c:905
rfcomm_sock_release+0x55/0x120 net/bluetooth/rfcomm/sock.c:925
__sock_release net/socket.c:650 [inline]
sock_close+0xd8/0x260 net/socket.c:1318
__fput+0x3f6/0x860 fs/file_table.c:317
task_work_run+0x146/0x1c0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0x5e3/0x20f0 kernel/exit.c:794
do_group_exit+0x2af/0x2b0 kernel/exit.c:924
get_signal+0x23e8/0x23f0 kernel/signal.c:2903
arch_do_signal_or_restart+0xa1/0x740 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:149 [inline]
exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
exit_to_user_mode_prepare+0x165/0x200 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:315
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7faa979a81b9
RSP: 002b:00007ffe072d6c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007faa979a81b9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555f5a2b8
R13: 0000000000000072 R14: 00007ffe072d6c60 R15: 0000000000000003
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-12817-gcffb2b72d3ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11 Comm: kworker/u4:1 Tainted: G W 5.17.0-syzkaller-12817-gcffb2b72d3ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x11/0x12
Code: 51 41 52 41 53 e8 df 0a 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 3c 01 75 02 5a 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 55 48 89 e5 41 57 41
RSP: 0018:ffffc90000107768 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff110022b6c25 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880115b6120
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed10022b6c25
R10: ffffed10022b6c25 R11: 0000000000000000 R12: 1ffff110022b6c26
R13: ffff8880115b6130 R14: ffff8880115b6128 R15: ffff8880115b6120
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055947b3e3728 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:596 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
do_raw_spin_unlock+0x134/0x8a0 kernel/locking/spinlock_debug.c:141
__raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
__text_poke+0x874/0x9f0 arch/x86/kernel/alternative.c:1097
text_poke arch/x86/kernel/alternative.c:1121 [inline]
text_poke_bp_batch+0x680/0x920 arch/x86/kernel/alternative.c:1436
text_poke_flush arch/x86/kernel/alternative.c:1542 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1549
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x12d/0x250 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:779
process_one_work+0x83c/0x11a0 kernel/workqueue.c:2289
worker_thread+0xa6c/0x1290 kernel/workqueue.c:2436
kthread+0x2a3/0x2d0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 51 push %rcx
1: 41 52 push %r10
3: 41 53 push %r11
5: e8 df 0a 00 00 callq 0xae9
a: 41 5b pop %r11
c: 41 5a pop %r10
e: 41 59 pop %r9
10: 41 58 pop %r8
12: 5f pop %rdi
13: 5e pop %rsi
14: 5a pop %rdx
15: 59 pop %rcx
16: c3 retq
17: 66 90 xchg %ax,%ax
19: 52 push %rdx
1a: b8 01 00 00 00 mov $0x1,%eax
1f: 31 d2 xor %edx,%edx
21: f0 0f b0 17 lock cmpxchg %dl,(%rdi)
25: 3c 01 cmp $0x1,%al
27: 75 02 jne 0x2b
29: 5a pop %rdx
* 2a: c3 retq <-- trapping instruction
2b: 56 push %rsi
2c: 0f b6 f0 movzbl %al,%esi
2f: e8 c5 ff ff ff callq 0xfffffff9
34: 5e pop %rsi
35: 5a pop %rdx
36: c3 retq
37: 66 90 xchg %ax,%ax
39: 55 push %rbp
3a: 48 89 e5 mov %rsp,%rbp
3d: 41 57 push %r15
3f: 41 rex.B