From: CGEL <cgel.zte@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: anton@tuxera.com, linux-ntfs-dev@lists.sourceforge.net,
stable@vger.kernel.org, linux-kernel@vger.kernel.org,
xu.xin16@zte.com.cn, linux-fsdevel@vger.kernel.org,
Zeal Robot <zealci@zte.com.cn>,
syzbot+6a5a7672f663cce8b156@syzkaller.appspotmail.com,
Songyi Zhang <zhang.songyi@zte.com.cn>,
Yang Yang <yang.yang29@zte.com.cn>,
Jiang Xuexin <jiang.xuexin@zte.com.cn>,
Zhang wenya <zhang.wenya1@zte.com.cn>
Subject: Re: [PATCH] fs/ntfs: fix BUG_ON of ntfs_read_block()
Date: Thu, 23 Jun 2022 08:59:18 +0000 [thread overview]
Message-ID: <62b42b68.1c69fb81.9dc0f.49bb@mx.google.com> (raw)
In-Reply-To: <YrQc8xq+QezRcLi7@kroah.com>
On Thu, Jun 23, 2022 at 09:57:39AM +0200, Greg KH wrote:
> On Thu, Jun 23, 2022 at 03:51:31AM +0000, cgel.zte@gmail.com wrote:
> > From: xu xin <xu.xin16@zte.com.cn>
> >
> > As the bug description, attckers can use this bug to crash the system
> > When CONFIG_NTFS_FS is set.
> >
> > So remove the BUG_ON, and use WARN and return instead until someone
> > really solve the bug.
> >
> > Reported-by: Zeal Robot <zealci@zte.com.cn>
> > Reported-by: syzbot+6a5a7672f663cce8b156@syzkaller.appspotmail.com
> > Reviewed-by: Songyi Zhang <zhang.songyi@zte.com.cn>
> > Reviewed-by: Yang Yang <yang.yang29@zte.com.cn>
> > Reviewed-by: Jiang Xuexin<jiang.xuexin@zte.com.cn>
> > Reviewed-by: Zhang wenya<zhang.wenya1@zte.com.cn>
> > Signed-off-by: xu xin <xu.xin16@zte.com.cn>
> > ---
> > fs/ntfs/aops.c | 6 +++++-
> > 1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > --- a/fs/ntfs/aops.c
> > +++ b/fs/ntfs/aops.c
> > @@ -183,7 +183,11 @@ static int ntfs_read_block(struct page *page)
> > vol = ni->vol;
> >
> > /* $MFT/$DATA must have its complete runlist in memory at all times. */
> > - BUG_ON(!ni->runlist.rl && !ni->mft_no && !NInoAttr(ni));
> > + if (unlikely(!ni->runlist.rl && !ni->mft_no && !NInoAttr(ni))) {
> > + WARN(1, "NTFS: ni->runlist.rl, ni->mft_no, and NInoAttr(ni) is null!\n");
> > + unlock_page(page);
> > + return -EINVAL;
> > + }
> >
> > blocksize = vol->sb->s_blocksize;
> > blocksize_bits = vol->sb->s_blocksize_bits;
> > --
> > 2.25.1
> >
>
> <formletter>
>
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree. Please read:
> https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> for how to do this properly.
>
Sorry. I'll rewrite a patch to fix it.
Thanks.
> </formletter>
next prev parent reply other threads:[~2022-06-23 8:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 3:36 Bug report: ntfs_read_block may crash system xu xin
2022-06-23 3:51 ` [PATCH] fs/ntfs: fix BUG_ON of ntfs_read_block() cgel.zte
2022-06-23 7:57 ` Greg KH
2022-06-23 8:57 ` CGEL
2022-06-23 7:57 ` Greg KH
2022-06-23 8:59 ` CGEL [this message]
2022-06-23 7:55 ` Bug report: ntfs_read_block may crash system Greg KH
2022-06-23 9:49 ` [PATCH v2] fs/ntfs: fix BUG_ON of ntfs_read_block() cgel.zte
2022-06-23 17:08 ` Eric Biggers
2022-06-24 2:33 ` Namjae Jeon
2022-06-24 3:55 ` CGEL
[not found] ` <7FBC6FD2-5D60-4EB8-96D5-A6014D271950@tuxera.com>
2022-06-24 14:37 ` Namjae Jeon
2022-06-24 15:26 ` Anton Altaparmakov
2022-07-05 7:47 ` CGEL
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