Re: [syzbot] [bluetooth?] KASAN: slab-use-after-free Read in l2cap_unregister_user

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+14b6d57fb728e27ce23c@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+14b6d57fb728e27ce23c@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         8f5ae30d Linux 6.17-rc1
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=16786842580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb
dashboard link: https://syzkaller.appspot.com/bug?extid=14b6d57fb728e27ce23c
compiler:       Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
userspace arch: arm64
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17f5caf0580000

Note: testing is done by a robot and is best-effort only.