 </TASK>
kobject: kobject_add_internal failed for hci3:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci3: failed to register connection device
Oops: general protection fault, probably for non-canonical address 0xdffffc000000004c: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000260-0x0000000000000267]
CPU: 0 UID: 0 PID: 21172 Comm: kworker/u11:2 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: hci3 hci_rx_work
RIP: 0010:kasan_byte_accessible+0x12/0x30
Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc900087ef490 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff89446f78 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff89446f78 RDI: 000000000000004c
RBP: ffffffff8a7a62ea R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8a7a62a0 R12: 0000000000000000
R13: 0000000000000260 R14: 0000000000000260 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88818e409000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3151eff8 CR3: 00000001129fa000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __kasan_check_byte+0x12/0x40
 lock_acquire+0x84/0x330
 lock_sock_nested+0x48/0x100
 l2cap_sock_new_connection_cb+0x4a/0x2e0
 l2cap_connect_cfm+0x367/0x1130
 hci_connect_cfm+0x95/0x140
 le_conn_complete_evt+0xf65/0x1430
 hci_le_conn_complete_evt+0x187/0x470
 hci_event_packet+0x7af/0x12c0
 hci_rx_work+0x3ee/0x1030
 process_scheduled_works+0xaec/0x17a0
 worker_thread+0x89f/0xd90
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30
Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc900087ef490 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff89446f78 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff89446f78 RDI: 000000000000004c
RBP: ffffffff8a7a62ea R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8a7a62a0 R12: 0000000000000000
R13: 0000000000000260 R14: 0000000000000260 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88818e409000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3151eff8 CR3: 000000000e13a000 CR4: 00000000000006f0
