INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 4568 Comm: syz-executor.4 Not tainted 5.17.0-rc2-next-20220204-syzkaller #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+0xcd/0x134 lib/dump_stack.c:106
assign_lock_key kernel/locking/lockdep.c:951 [inline]
register_lock_class+0xd28/0x1030 kernel/locking/lockdep.c:1263
__lock_acquire+0x105/0x54d0 kernel/locking/lockdep.c:4906
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
hci_uart_flush+0x11b/0x550 drivers/bluetooth/hci_ldisc.c:240
hci_uart_close+0x1d/0x70 drivers/bluetooth/hci_ldisc.c:266
hci_uart_tty_close+0xb1/0x2a0 drivers/bluetooth/hci_ldisc.c:536
tty_ldisc_close+0x110/0x190 drivers/tty/tty_ldisc.c:456
tty_ldisc_kill+0x94/0x150 drivers/tty/tty_ldisc.c:608
tty_ldisc_release+0xe1/0x2a0 drivers/tty/tty_ldisc.c:776
tty_release_struct+0x20/0xe0 drivers/tty/tty_io.c:1694
tty_release+0xc70/0x1200 drivers/tty/tty_io.c:1865
__fput+0x286/0x9f0 fs/file_table.c:311
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xafa/0x2aa0 kernel/exit.c:806
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc725352059
Code: Unable to access opcode bytes at RIP 0x7fc72535202f.
RSP: 002b:00007fc724285168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fc725465100 RCX: 00007fc725352059
RDX: 0000000000000004 RSI: 00000000400455c8 RDI: 0000000000000003
RBP: 00007fc7253ac08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd22d16dbf R14: 00007fc724285300 R15: 0000000000022000
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 4568 Comm: syz-executor.4 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__wake_up_common+0xdf/0x650 kernel/sched/wait.c:101
Code: 05 00 00 4c 8b 43 40 49 83 e8 18 49 8d 78 18 48 3b 3c 24 0f 84 6a 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 40 05 00 00 49 8b 40 18 89 54 24 10 31 db 48 bd
RSP: 0018:ffffc90003ddf7b0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff888074d95cc8 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 1ffffffff1b29b19 RDI: 0000000000000000
RBP: ffff888074d95d18 R08: ffffffffffffffe8 R09: 0000000000000000
R10: fffff520007bbef0 R11: 0000000000000000 R12: ffff888074d95cc0
R13: 0000000000000297 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f459b1058 CR3: 000000004c105000 CR4: 00000000003506e0
Call Trace:
rcu_sync_func+0x119/0x180 kernel/rcu/sync.c:87
rcu_sync_enter+0x150/0x2e0 kernel/rcu/sync.c:150
percpu_down_write+0x55/0x320 kernel/locking/percpu-rwsem.c:220
hci_uart_tty_close+0x162/0x2a0 drivers/bluetooth/hci_ldisc.c:539
tty_ldisc_close+0x110/0x190 drivers/tty/tty_ldisc.c:456
tty_ldisc_kill+0x94/0x150 drivers/tty/tty_ldisc.c:608
tty_ldisc_release+0xe1/0x2a0 drivers/tty/tty_ldisc.c:776
tty_release_struct+0x20/0xe0 drivers/tty/tty_io.c:1694
tty_release+0xc70/0x1200 drivers/tty/tty_io.c:1865
__fput+0x286/0x9f0 fs/file_table.c:311
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xafa/0x2aa0 kernel/exit.c:806
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x4b0/0x28c0 kernel/signal.c:2862
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc725352059
Code: Unable to access opcode bytes at RIP 0x7fc72535202f.
RSP: 002b:00007fc724285168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007fc725465100 RCX: 00007fc725352059
RDX: 0000000000000004 RSI: 00000000400455c8 RDI: 0000000000000003
RBP: 00007fc7253ac08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd22d16dbf R14: 00007fc724285300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common+0xdf/0x650 kernel/sched/wait.c:101
Code: 05 00 00 4c 8b 43 40 49 83 e8 18 49 8d 78 18 48 3b 3c 24 0f 84 6a 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 40 05 00 00 49 8b 40 18 89 54 24 10 31 db 48 bd
RSP: 0018:ffffc90003ddf7b0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff888074d95cc8 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 1ffffffff1b29b19 RDI: 0000000000000000
RBP: ffff888074d95d18 R08: ffffffffffffffe8 R09: 0000000000000000
R10: fffff520007bbef0 R11: 0000000000000000 R12: ffff888074d95cc0
R13: 0000000000000297 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f459b1058 CR3: 000000004c105000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
0: 05 00 00 4c 8b add $0x8b4c0000,%eax
5: 43 rex.XB
6: 40 rex
7: 49 83 e8 18 sub $0x18,%r8
b: 49 8d 78 18 lea 0x18(%r8),%rdi
f: 48 3b 3c 24 cmp (%rsp),%rdi
13: 0f 84 6a 02 00 00 je 0x283
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 f9 mov %rdi,%rcx
26: 48 c1 e9 03 shr $0x3,%rcx
* 2a: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) <-- trapping instruction
2e: 0f 85 40 05 00 00 jne 0x574
34: 49 8b 40 18 mov 0x18(%r8),%rax
38: 89 54 24 10 mov %edx,0x10(%rsp)
3c: 31 db xor %ebx,%ebx
3e: 48 rex.W
3f: bd .byte 0xbd