wireguard: wg1: Could not create IPv4 socket
wireguard: wg2: Could not create IPv4 socket
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 2 PID: 13272 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 2 UID: 0 PID: 13272 Comm: syz-executor Not tainted 6.16.0-rc7-syzkaller-00142-gb711733e89a3 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Code: ff 89 de e8 f8 ef e0 fc 84 db 0f 85 66 ff ff ff e8 0b f5 e0 fc c6 05 d6 a9 b6 0b 01 90 48 c7 c7 a0 20 15 8c e8 77 fc 9f fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 e8 f4 e0 fc 0f b6 1d b1 a9 b6 0b 31
RSP: 0018:ffffc90004647968 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817af1a8
RDX: ffff888029ba4880 RSI: ffffffff817af1b5 RDI: 0000000000000001
RBP: ffff8880344ea478 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888059217c00
R13: ffff8880344ea478 R14: ffffffff8609d790 R15: ffffffff908c3ee0
FS:  0000000000000000(0000) GS:ffff8880d6920000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe2085a8c0 CR3: 000000003155d000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000004144
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_sub_and_test include/linux/refcount.h:400 [inline]
 __refcount_dec_and_test include/linux/refcount.h:432 [inline]
 refcount_dec_and_test include/linux/refcount.h:450 [inline]
 kref_put include/linux/kref.h:64 [inline]
 klist_dec_and_del lib/klist.c:206 [inline]
 klist_put+0x11b/0x1b0 lib/klist.c:217
 klist_del lib/klist.c:230 [inline]
 klist_remove+0x13f/0x2e0 lib/klist.c:249
 device_move+0x12d/0x10d0 drivers/base/core.c:4618
 hci_conn_del_sysfs+0x81/0x180 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
 hci_conn_del+0x566/0xdc0 net/bluetooth/hci_conn.c:1173
 hci_conn_hash_flush+0x186/0x260 net/bluetooth/hci_conn.c:2561
 hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5294
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:501
 hci_unregister_dev+0x227/0x640 net/bluetooth/hci_core.c:2717
 vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:665
 __fput+0x3ff/0xb70 fs/file_table.c:465
 task_work_run+0x150/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86c/0x2bd0 kernel/exit.c:964
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
 __do_sys_exit_group kernel/exit.c:1116 [inline]
 __se_sys_exit_group kernel/exit.c:1114 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1114
 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b41d8e9a9
Code: Unable to access opcode bytes at 0x7f3b41d8e97f.
RSP: 002b:00007ffe2085ca98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3b41e11b48 RCX: 00007f3b41d8e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043
RBP: 00007f3b41ded658 R08: 00007ffe2085a837 R09: 000000000000002d
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000002d R14: 00007ffe2085cbd2 R15: 0000000000000024
 </TASK>