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:29976 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-executor433:3624 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-executor433 state:D stack:26552 pid: 3624 ppid: 3619 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: 0033:0x7efcf0ca27d9
RSP: 002b:00007ffc46f64ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007efcf0ca27d9
RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555ed72b8
R13: 0000000000000072 R14: 0000000000000003 R15: 00007ffc46f64b50
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: 8 Comm: kworker/u4:0 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:text_poke_bp_batch+0x387/0x920 arch/x86/kernel/alternative.c:1340
Code: c0 f4 d1 20 8e 48 c1 e8 03 48 89 44 24 58 4c 8b 64 24 40 4d 89 ee 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 49 8d 5e 0f 48 89 d8 <48> c1 e8 03 48 be 00 00 00 00 00 fc ff df 0f b6 04 30 84 c0 0f 85
RSP: 0018:ffffc900000d79a0 EFLAGS: 00000202
RAX: ffffffff8f7f442f RBX: ffffffff8f7f442f RCX: ffff88813fe6d700
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000d7ae8 R08: ffffffff81aab855 R09: fffffbfff1c414e4
R10: fffffbfff1c414e4 R11: 0000000000000000 R12: 0000000000000008
R13: ffffffff8f7f4400 R14: ffffffff8f7f4420 R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562b5d682000 CR3: 000000000ca8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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: c0 f4 d1 shl $0xd1,%ah
3: 20 8e 48 c1 e8 03 and %cl,0x3e8c148(%rsi)
9: 48 89 44 24 58 mov %rax,0x58(%rsp)
e: 4c 8b 64 24 40 mov 0x40(%rsp),%r12
13: 4d 89 ee mov %r13,%r14
16: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
1d: 00 00 00
20: 0f 1f 00 nopl (%rax)
23: 49 8d 5e 0f lea 0xf(%r14),%rbx
27: 48 89 d8 mov %rbx,%rax
* 2a: 48 c1 e8 03 shr $0x3,%rax <-- trapping instruction
2e: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi
35: fc ff df
38: 0f b6 04 30 movzbl (%rax,%rsi,1),%eax
3c: 84 c0 test %al,%al
3e: 0f .byte 0xf
3f: 85 .byte 0x85