INFO: task krfcommd:2706 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-10752-g52d543b5497c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:krfcommd state:D stack:28984 pid: 2706 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-executor327:3637 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-10752-g52d543b5497c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor327 state:D stack:26552 pid: 3637 ppid: 3631 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+0x3fc/0x870 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+0x1831/0x2330 kernel/signal.c:2903
arch_do_signal_or_restart+0x9c/0x730 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: 0033:0x7f277be2a1b9
RSP: 002b:00007fff8f2cb6b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007f277be2a1b9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001
R10: 0000000000000000 R11: 0000000000000246 R12: 000055555648c2b8
R13: 0000000000000072 R14: 00007fff8f2cb710 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-10752-g52d543b5497c #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-10752-g52d543b5497c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xc22/0xe10 kernel/smp.c:969
Code: 83 e6 01 31 ff e8 9e c6 0b 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 0e e8 79 c2 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 <42> 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 2b e8 56 c2
RSP: 0018:ffffc90000107820 EFLAGS: 00000293
RAX: ffffffff817a8fca RBX: 1ffff11017348405 RCX: ffff88813fe9ba00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000107960 R08: ffffffff817a8f92 R09: ffffffff8457a700
R10: 0000000000000009 R11: ffff88813fe9ba00 R12: 0000000000000000
R13: ffff8880b9a42028 R14: ffff8880b9b3ac80 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005577c62a7680 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1146 [inline]
text_poke_bp_batch+0x64a/0x920 arch/x86/kernel/alternative.c:1387
text_poke_flush arch/x86/kernel/alternative.c:1504 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1511
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: 83 e6 01 and $0x1,%esi
3: 31 ff xor %edi,%edi
5: e8 9e c6 0b 00 callq 0xbc6a8
a: 41 83 e7 01 and $0x1,%r15d
e: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
15: fc ff df
18: 75 0e jne 0x28
1a: e8 79 c2 0b 00 callq 0xbc298
1f: eb 4c jmp 0x6d
21: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
28: f3 90 pause
* 2a: 42 0f b6 04 3b movzbl (%rbx,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 75 11 jne 0x44
33: 41 f7 45 00 01 00 00 testl $0x1,0x0(%r13)
3a: 00
3b: 74 2b je 0x68
3d: e8 .byte 0xe8
3e: 56 push %rsi
3f: c2 .byte 0xc2