linux-kernel - Re: A shift-out-of-bounds in minix

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Message-ID: <YPjdVAj7GLS8LyNK@casper.infradead.org>
Date:   Thu, 22 Jul 2021 03:52:04 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     butt3rflyh4ck <butterflyhuangxx@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-fsdevel@...r.kernel.org,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        djwong@...nel.org
Subject: Re: A shift-out-of-bounds in minix_statfs in fs/minix/inode.c

On Thu, Jul 22, 2021 at 10:43:10AM +0800, butt3rflyh4ck wrote:
> On Thu, Jul 22, 2021 at 1:37 AM Matthew Wilcox <willy@...radead.org> wrote:
> >That's not something we're
> > traditionally interested in, unless the filesystem is one customarily
> > used for data interchange (like FAT or iso9660).
> 
> These file systems are my fuzzing targets.

You're not the first.

https://lore.kernel.org/linux-fsdevel/6A96C62E-1D01-44AD-B2C5-7A2258BADC0D@schumilo.de/T/#u