------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 0 PID: 5355 at lib/refcount.c:25 refcount_warn_saturate+0x13a/0x1d0 lib/refcount.c:25
Modules linked in:
CPU: 0 UID: 0 PID: 5355 Comm: kworker/0:7 Not tainted 6.11.0-rc7-syzkaller-01514-g34c44eb31de9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events sco_sock_timeout
RIP: 0010:refcount_warn_saturate+0x13a/0x1d0 lib/refcount.c:25
Code: e0 3c 60 8c e8 d7 23 a3 fc 90 0f 0b 90 90 eb b9 e8 9b ff e0 fc c6 05 20 82 4f 0b 01 90 48 c7 c7 40 3d 60 8c e8 b7 23 a3 fc 90 <0f> 0b 90 90 eb 99 e8 7b ff e0 fc c6 05 01 82 4f 0b 01 90 48 c7 c7
RSP: 0018:ffffc900042cfb70 EFLAGS: 00010246
RAX: 0214806cb38c2c00 RBX: ffff888067211080 RCX: ffff8880259d9e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffffffff8155b372 R09: fffffbfff1cfa0e0
R10: dffffc0000000000 R11: fffffbfff1cfa0e0 R12: ffff888067211000
R13: dffffc0000000000 R14: ffff888067211080 R15: ffff88806f513c08
FS:  0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c31d5e4 CR3: 000000000e734000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_inc include/linux/refcount.h:241 [inline]
 refcount_inc include/linux/refcount.h:258 [inline]
 sock_hold include/net/sock.h:781 [inline]
 sco_sock_timeout+0x1e4/0x270 net/bluetooth/sco.c:92
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>