notifier callback hci_suspend_notifier already registered
WARNING: CPU: 1 PID: 8917 at kernel/notifier.c:28 notifier_chain_register kernel/notifier.c:28 [inline]
WARNING: CPU: 1 PID: 8917 at kernel/notifier.c:28 notifier_chain_register+0x156/0x210 kernel/notifier.c:22
Modules linked in:
CPU: 0 PID: 8917 Comm: syz-executor.0 Not tainted 6.0.0-rc4-syzkaller-00985-g44a8535fb87c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:notifier_chain_register kernel/notifier.c:28 [inline]
RIP: 0010:notifier_chain_register+0x156/0x210 kernel/notifier.c:22
Code: 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a5 00 00 00 49 8b 75 00 48 c7 c7 c0 f2 eb 89 e8 7c 20 eb 07 <0f> 0b 41 bc ef ff ff ff e8 bd 2b 2b 00 44 89 e0 48 83 c4 18 5b 5d
RSP: 0018:ffffc9001600f9c0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888024051108 RCX: 0000000000000000
RDX: ffff88801712bb00 RSI: ffffffff8161f408 RDI: fffff52002c01f2a
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888024051108 R14: ffff888076901110 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86db36b1b8 CR3: 000000007ec62000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __blocking_notifier_chain_register kernel/notifier.c:266 [inline]
 blocking_notifier_chain_register+0x6f/0xc0 kernel/notifier.c:284
 hci_register_suspend_notifier net/bluetooth/hci_core.c:2749 [inline]
 hci_register_suspend_notifier+0x9d/0xc0 net/bluetooth/hci_core.c:2743
 hci_sock_release+0x4a2/0x520 net/bluetooth/hci_sock.c:890
 __sock_release+0xcd/0x280 net/socket.c:650
 sock_close+0x18/0x20 net/socket.c:1365
 __fput+0x277/0x9d0 fs/file_table.c:320
 task_work_run+0xdd/0x1a0 kernel/task_work.c:177
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xad5/0x29b0 kernel/exit.c:795
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x238c/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9c22eae131
Code: Unable to access opcode bytes at RIP 0x7f9c22eae107.
RSP: 002b:00007ffd7842d970 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00007f9c22f9bf80 RCX: 00007f9c22eae131
RDX: 00007ffd7842d9b0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f9c22f9d980 R08: 0000000000000000 R09: 00007ffd784b4080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000214cb4
R13: 00007f9c22fa0da0 R14: 00007f9c22f9c7a0 R15: 000000000000000a
 </TASK>