Re: [syzbot] [serial?] KASAN: use-after-free Read in gsm_cleanup_mux

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+893c55305230e719a203@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         6465e260 Linux 6.6-rc3
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=11c6d11e680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=50b6fcb179f758ed
dashboard link: https://syzkaller.appspot.com/bug?extid=893c55305230e719a203
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=13dd0012680000

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