linux-kernel - Re: [PATCH] jfs: jfs_dmap: Validate db

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Message-ID: <188d388e20c.68252734185979.7356640998684740177@siddh.me>
Date:   Mon, 19 Jun 2023 17:32:23 +0530
From:   Siddh Raman Pant <code@...dh.me>
To:     "Dave Kleikamp" <dave.kleikamp@...cle.com>
Cc:     "Dongliang Mu" <mudongliangabcd@...il.com>,
        "Liu Shixin" <liushixin2@...wei.com>,
        "Hoi Pok Wu" <wuhoipok@...il.com>,
        "jfs-discussion" <jfs-discussion@...ts.sourceforge.net>,
        "linux-kernel" <linux-kernel@...r.kernel.org>,
        "Anup Sharma" <anupnewsmail@...il.com>,
        "syzbot+d2cd27dcf8e04b232eb2" 
        <syzbot+d2cd27dcf8e04b232eb2@...kaller.appspotmail.com>,
        "stable" <stable@...r.kernel.org>
Subject: Re: [PATCH] jfs: jfs_dmap: Validate db_l2nbperpage while mounting

On Sat, 17 Jun 2023 03:46:09 +0530, Dave Kleikamp wrote:
> Actually the sanity check should be much smaller. The maximum value
> should be L2PSIZE - log2(MINBLOCKSIZE). In reality, I think it's always
> zero.

Thanks for the review, will amend the patch and send.

Thanks,
Siddh