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

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Message-ID: <CACT4Y+YrjD=3Tn6o4FJFefDYsOCbUFWahPUp87PXXcHQsr0xXg@mail.gmail.com>
Date: Mon, 8 Jul 2024 08:54:57 +0200
From: Dmitry Vyukov <dvyukov@...gle.com>
To: Lizhi Xu <lizhi.xu@...driver.com>
Cc: almaz.alexandrovich@...agon-software.com, linux-kernel@...r.kernel.org, 
	ntfs3@...ts.linux.dev, linux-fsdevel@...r.kernel.org, 
	syzbot+a426cde6dee8c2884b0b@...kaller.appspotmail.com, 
	syzkaller-bugs@...glegroups.com, Kees Cook <keescook@...gle.com>
Subject: Re: [syzbot] [ntfs3?] KASAN: slab-out-of-bounds Read in mi_enum_attr

On Fri, 5 Jul 2024 at 15:52, Lizhi Xu <lizhi.xu@...driver.com> wrote:
>
> On Thu, 4 Jul 2024 15:44:02 +0200, Dmitry Vyukov wrote:
> > > index 53629b1f65e9..a435df98c2b1 100644
> > > --- a/fs/ntfs3/record.c
> > > +++ b/fs/ntfs3/record.c
> > > @@ -243,14 +243,14 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
> > >                 off += asize;
> > >         }
> > >
> > > -       asize = le32_to_cpu(attr->size);
> > > -
> > >         /* Can we use the first field (attr->type). */
> > >         if (off + 8 > used) {
> > >                 static_assert(ALIGN(sizeof(enum ATTR_TYPE), 8) == 8);
> > >                 return NULL;
> > >         }
> > >
> > > +       asize = le32_to_cpu(attr->size);
> > > +
> > >         if (attr->type == ATTR_END) {
> > >                 /* End of enumeration. */
> > >                 return NULL;
> >
> > Hi Lizhi,
> >
> > I don't see this fix mailed as a patch. Do you plan to submit it officially?
> Hi Dmitry Vyukov,
> Here: https://lore.kernel.org/all/20240202033334.1784409-1-lizhi.xu@windriver.com

I don't see this patch merged upstream.  Was it lost? Perhaps it needs
to be resent.