linux-kernel - Re: [syzbot] [ntfs3?] KASAN: out-of-bounds Read in ntfs_set

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Date:   Wed, 1 Feb 2023 08:54:16 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+8778f030156c6cd16d72@...kaller.appspotmail.com>
Cc:     almaz.alexandrovich@...agon-software.com,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        nathan@...nel.org, ndesaulniers@...gle.com, ntfs3@...ts.linux.dev,
        syzkaller-bugs@...glegroups.com, trix@...hat.com
Subject: Re: [syzbot] [ntfs3?] KASAN: out-of-bounds Read in ntfs_set_ea

On Tue, 31 Jan 2023 at 17:17, syzbot
<syzbot+8778f030156c6cd16d72@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 0e8235d28f3a0e9eda9f02ff67ee566d5f42b66b
> Author: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
> Date:   Mon Oct 10 10:15:33 2022 +0000
>
>     fs/ntfs3: Check fields while reading
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11d9c385480000
> start commit:   02bf43c7b7f7 Merge tag 'fs.xattr.simple.rework.rbtree.rwlo..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8c59170b68d26a55
> dashboard link: https://syzkaller.appspot.com/bug?extid=8778f030156c6cd16d72
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136b8f57880000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=175ca3a3880000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: fs/ntfs3: Check fields while reading
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Looks reasonable, let's close the bug report:

#syz fix: fs/ntfs3: Check fields while reading