------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 1 PID: 27 at lib/refcount.c:25 refcount_warn_saturate+0x1ca/0x210 lib/refcount.c:25
Modules linked in:
CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 6.7.0-syzkaller-12262-g736b5545d39c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events sco_sock_timeout
RIP: 0010:refcount_warn_saturate+0x1ca/0x210 lib/refcount.c:25
Code: ff 89 de e8 38 be 1f fd 84 db 0f 85 e6 fe ff ff e8 fb c2 1f fd c6 05 00 51 bc 0a 01 90 48 c7 c7 60 3f 2f 8b e8 c7 b8 e5 fc 90 <0f> 0b 90 90 e9 c3 fe ff ff e8 d8 c2 1f fd c6 05 db 50 bc 0a 01 90
RSP: 0018:ffffc90000a2fcb0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814e18f9
RDX: ffff8880172d9dc0 RSI: ffffffff814e1906 RDI: 0000000000000001
RBP: ffff88802cf8e080 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888023353a08
R13: ffff88802cf8e080 R14: ffffc90000a2fd80 R15: ffff8880b993c480
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ecaed56c6 CR3: 000000000cf78000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_add include/linux/refcount.h:188 [inline]
 __refcount_inc include/linux/refcount.h:239 [inline]
 refcount_inc include/linux/refcount.h:256 [inline]
 sock_hold include/net/sock.h:760 [inline]
 sco_sock_timeout+0x232/0x2b0 net/bluetooth/sco.c:88
 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
 process_scheduled_works kernel/workqueue.c:2706 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
 kthread+0x2c6/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>