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

[syzbot]

Hello,

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

Reported-by: syzbot+39a2135de1558208d3b3@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+39a2135de1558208d3b3@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         cbbddb6b Merge tag 'power-utilities-2026.10.31' of git..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=165ce62d580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=245a52f53bb4b06b
dashboard link: https://syzkaller.appspot.com/bug?extid=39a2135de1558208d3b3
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17f6dc8d580000

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