kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8335 Comm: syz-executor.4 Not tainted 5.4.233-syzkaller-00032-g21086923c1e6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline]
RIP: 0010:__wake_up_locked+0x5d/0x110 kernel/sched/wait.c:151
Code: e8 28 63 47 00 48 ba 00 00 00 00 00 fc ff df 4d 8b 34 24 4d 39 e6 0f 84 b1 00 00 00 4c 89 f3 49 8d 6e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 df e8 f5 62 47 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881e0f87900 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881d997f098
RBP: ffffffffffffffe8 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881d997f0a0
R13: ffff8881d997f0b0 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f928db87700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8bc06458 CR3: 00000001ab164000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rcu_sync_func+0xaa/0x210 kernel/rcu/sync.c:87
 rcu_sync_enter+0x1ec/0x330 kernel/rcu/sync.c:150
 percpu_down_write+0x72/0x330 kernel/locking/percpu-rwsem.c:146
 hci_uart_tty_close+0x11e/0x220 drivers/bluetooth/hci_ldisc.c:536
 tty_ldisc_close drivers/tty/tty_ldisc.c:494 [inline]
 tty_ldisc_kill+0x100/0x220 drivers/tty/tty_ldisc.c:642
 tty_ldisc_hangup+0x39d/0x4a0 drivers/tty/tty_ldisc.c:761
 __tty_hangup+0x62d/0x8a0 drivers/tty/tty_io.c:624
 tty_vhangup drivers/tty/tty_io.c:697 [inline]
 tty_ioctl+0x639/0xcb0 drivers/tty/tty_io.c:2598
 do_vfs_ioctl+0x742/0x1720 fs/ioctl.c:47
 ksys_ioctl fs/ioctl.c:742 [inline]
 __do_sys_ioctl fs/ioctl.c:749 [inline]
 __se_sys_ioctl fs/ioctl.c:747 [inline]
 __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace e93f171ca211e627 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline]
RIP: 0010:__wake_up_locked+0x5d/0x110 kernel/sched/wait.c:151
Code: e8 28 63 47 00 48 ba 00 00 00 00 00 fc ff df 4d 8b 34 24 4d 39 e6 0f 84 b1 00 00 00 4c 89 f3 49 8d 6e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 df e8 f5 62 47 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881e0f87900 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881d997f098
RBP: ffffffffffffffe8 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881d997f0a0
R13: ffff8881d997f0b0 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f928db87700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8bc06458 CR3: 00000001ab164000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 28 63 47 00       	callq  0x47632d
   5:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
   c:	fc ff df
   f:	4d 8b 34 24          	mov    (%r12),%r14
  13:	4d 39 e6             	cmp    %r12,%r14
  16:	0f 84 b1 00 00 00    	je     0xcd
  1c:	4c 89 f3             	mov    %r14,%rbx
  1f:	49 8d 6e e8          	lea    -0x18(%r14),%rbp
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1) <-- trapping instruction
  2e:	74 12                	je     0x42
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 f5 62 47 00       	callq  0x47632d
  38:	48                   	rex.W
  39:	ba 00 00 00 00       	mov    $0x0,%edx
  3e:	00 fc                	add    %bh,%ah