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: 7544 Comm: syz-executor.4 Tainted: G        W         5.4.219-syzkaller-00097-ga76dfbc99260 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline]
RIP: 0010:__wake_up_locked+0x67/0x120 kernel/sched/wait.c:151
Code: 00 00 fc ff df 4c 8b 73 08 66 2e 0f 1f 84 00 00 00 00 00 4d 39 f5 0f 84 b4 00 00 00 4c 89 f5 49 8d 5e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 2b c7 48 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881dc827920 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffffffffffe8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881e9c1d498
RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103b904f19 R11: 1ffff1103b904f18 R12: 0000000000000001
R13: ffff8881e9c1d4a0 R14: 0000000000000000 R15: ffff8881e9c1d498
FS:  00007faa46ffb700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15fd293ff8 CR3: 00000001ef5e2000 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+0x1ea/0x330 kernel/rcu/sync.c:150
 percpu_down_write+0x72/0x340 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 drivers/tty/tty_ldisc.c:642 [inline]
 tty_ldisc_hangup+0x4bf/0x6b0 drivers/tty/tty_ldisc.c:761
 __tty_hangup+0x64b/0x8b0 drivers/tty/tty_io.c:624
 tty_vhangup drivers/tty/tty_io.c:697 [inline]
 tty_ioctl+0x630/0xcb0 drivers/tty/tty_io.c:2598
 do_vfs_ioctl+0x744/0x1730 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+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace b038424049954027 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:81 [inline]
RIP: 0010:__wake_up_locked+0x67/0x120 kernel/sched/wait.c:151
Code: 00 00 fc ff df 4c 8b 73 08 66 2e 0f 1f 84 00 00 00 00 00 4d 39 f5 0f 84 b4 00 00 00 4c 89 f5 49 8d 5e e8 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 2b c7 48 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff8881dc827920 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffffffffffe8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881e9c1d498
RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed103b904f19 R11: 1ffff1103b904f18 R12: 0000000000000001
R13: ffff8881e9c1d4a0 R14: 0000000000000000 R15: ffff8881e9c1d498
FS:  00007faa46ffb700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15fd293ff8 CR3: 00000001ef5e2000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	df 4c 8b 73          	fisttps 0x73(%rbx,%rcx,4)
   4:	08 66 2e             	or     %ah,0x2e(%rsi)
   7:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   e:	00
   f:	4d 39 f5             	cmp    %r14,%r13
  12:	0f 84 b4 00 00 00    	je     0xcc
  18:	4c 89 f5             	mov    %r14,%rbp
  1b:	49 8d 5e e8          	lea    -0x18(%r14),%rbx
  1f:	4c 89 f0             	mov    %r14,%rax
  22:	48 c1 e8 03          	shr    $0x3,%rax
* 26:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1) <-- trapping instruction
  2a:	74 12                	je     0x3e
  2c:	48 89 ef             	mov    %rbp,%rdi
  2f:	e8 2b c7 48 00       	callq  0x48c75f
  34:	48                   	rex.W
  35:	ba 00 00 00 00       	mov    $0x0,%edx
  3a:	00 fc                	add    %bh,%ah