linux-ext4 - Re: [PATCH] ext4: avoid arithemetic overflow that can trigger a BUG

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Message-ID: <20180901025003.GB27277@thunk.org>
Date:   Fri, 31 Aug 2018 22:50:03 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     Ext4 Developers List <linux-ext4@...r.kernel.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH] ext4: avoid arithemetic overflow that can trigger a BUG

On Fri, Aug 31, 2018 at 09:31:36PM +0200, Jiri Slaby wrote:
> 
> Can't this be just
> 
> map.m_len = min_t(unsigned long, last_block - first_block + 1, UINT_MAX)?

Yes, good point, thanks.

					- Ted