Re: [syzbot] [udf?] KASAN: use-after-free Write in udf_close_lvid

From: Jan Kara
Date: Mon Feb 19 2024 - 06:51:37 EST


On Sun 18-02-24 10:20:04, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 6f861765464f43a71462d52026fbddfc858239a5
> Author: Jan Kara <jack@xxxxxxx>
> Date: Wed Nov 1 17:43:10 2023 +0000
>
> fs: Block writes to mounted block devices
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12c941c2180000
> start commit: f016f7547aee Merge tag 'gpio-fixes-for-v6.7-rc8' of git://..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=f8e72bae38c079e4
> dashboard link: https://syzkaller.appspot.com/bug?extid=60864ed35b1073540d57
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c2caf9e80000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f518f9e80000
>
> If the result looks correct, please mark the issue as fixed by replying with:

Yes, this was expected :)

#syz fix: fs: Block writes to mounted block devices

Honza
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR