INFO: task krfcommd:2706 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-10753-gbddac7c1e02b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:krfcommd state:D stack:30008 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-executor164:3636 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-10753-gbddac7c1e02b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor164 state:D stack:26552 pid: 3636 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: 0033:0x7f67f5af71b9
RSP: 002b:00007fff870ff1b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007f67f5af71b9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000003 R08: 000000ff00000001 R09: 000000ff00000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555556b682b8
R13: 0000000000000072 R14: 00007fff870ff210 R15: 0000000000000003
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-10753-gbddac7c1e02b #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Tainted: G W 5.17.0-syzkaller-10753-gbddac7c1e02b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:insn_get_opcode+0x81f/0xa90 arch/x86/lib/insn.c:314
Code: 0f 85 a8 01 00 00 41 8b 1e bd c0 07 08 00 be c0 07 08 00 21 de 31 ff e8 ff fa 28 fd 21 dd 74 24 e8 e6 f6 28 fd 48 8b 6c 24 20 <42> 8a 44 25 00 84 c0 48 8b 5c 24 50 0f 85 90 01 00 00 c6 03 01 45
RSP: 0018:ffffc900001076d8 EFLAGS: 00000293
RAX: ffffffff845d5ae4 RBX: 1ffff92000020f39 RCX: ffff88813fe7ba00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92000020f33 R08: ffffffff845d5ab4 R09: ffffc90000107980
R10: fffff52000020f3b R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc90000107990 R15: ffffc900001079cc
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558e1eb7ca88 CR3: 000000000ca8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
insn_get_modrm+0x205/0x760 arch/x86/lib/insn.c:343
insn_get_sib arch/x86/lib/insn.c:421 [inline]
insn_get_displacement+0x12a/0xa90 arch/x86/lib/insn.c:464
insn_get_immediate+0x404/0x1fe0 arch/x86/lib/insn.c:632
insn_get_length arch/x86/lib/insn.c:707 [inline]
insn_decode+0x350/0x4c0 arch/x86/lib/insn.c:747
arch_jump_entry_size arch/x86/kernel/jump_label.c:24 [inline]
__jump_label_patch+0xe0/0x2b0 arch/x86/kernel/jump_label.c:45
arch_jump_label_transform_queue+0x49/0xd0 arch/x86/kernel/jump_label.c:137
__jump_label_update+0x15d/0x350 kernel/jump_label.c:451
static_key_disable_cpuslocked+0xcc/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate+0x3c8/0x460 mm/kfence/core.c:793
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: 0f 85 a8 01 00 00 jne 0x1ae
6: 41 8b 1e mov (%r14),%ebx
9: bd c0 07 08 00 mov $0x807c0,%ebp
e: be c0 07 08 00 mov $0x807c0,%esi
13: 21 de and %ebx,%esi
15: 31 ff xor %edi,%edi
17: e8 ff fa 28 fd callq 0xfd28fb1b
1c: 21 dd and %ebx,%ebp
1e: 74 24 je 0x44
20: e8 e6 f6 28 fd callq 0xfd28f70b
25: 48 8b 6c 24 20 mov 0x20(%rsp),%rbp
* 2a: 42 8a 44 25 00 mov 0x0(%rbp,%r12,1),%al <-- trapping instruction
2f: 84 c0 test %al,%al
31: 48 8b 5c 24 50 mov 0x50(%rsp),%rbx
36: 0f 85 90 01 00 00 jne 0x1cc
3c: c6 03 01 movb $0x1,(%rbx)
3f: 45 rex.RB