------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 0 PID: 5141 at lib/refcount.c:25 refcount_warn_saturate+0x13a/0x1d0 lib/refcount.c:25
Modules linked in:
CPU: 0 PID: 5141 Comm: kworker/0:4 Not tainted 6.10.0-rc6-syzkaller-00158-g0005b2dc43f9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events sco_sock_timeout
RIP: 0010:refcount_warn_saturate+0x13a/0x1d0 lib/refcount.c:25
Code: c0 96 1f 8c e8 b7 84 a9 fc 90 0f 0b 90 90 eb b9 e8 cb 56 e7 fc c6 05 bc f4 e8 0a 01 90 48 c7 c7 20 97 1f 8c e8 97 84 a9 fc 90 <0f> 0b 90 90 eb 99 e8 ab 56 e7 fc c6 05 9d f4 e8 0a 01 90 48 c7 c7
RSP: 0018:ffffc900040f7b70 EFLAGS: 00010246
RAX: 0d183b0f42c54b00 RBX: ffff888075cb2080 RCX: ffff8880643c9e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffffffff81585822 R09: fffffbfff1c39994
R10: dffffc0000000000 R11: fffffbfff1c39994 R12: ffff888075cb2000
R13: dffffc0000000000 R14: ffff888075cb2080 R15: ffff888062412808
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c316ba0 CR3: 000000005a310000 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:774 [inline]
 sco_sock_timeout+0x1e1/0x270 net/bluetooth/sco.c:92
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 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>