linux-kernel - Re: [PATCH][next] afs: fix integer overflow when shifting 1 more than 32 places

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Message-ID: <2495.1523462628@warthog.procyon.org.uk>
Date:   Wed, 11 Apr 2018 17:03:48 +0100
From:   David Howells <dhowells@...hat.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     dhowells@...hat.com, Colin Ian King <colin.king@...onical.com>,
        linux-afs@...ts.infradead.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] afs: fix integer overflow when shifting 1 more than 32 places

Dan Carpenter <dan.carpenter@...cle.com> wrote:

> Ideally static analyzers should know that nr_slots is 0-9, but right now
> that seems pretty tricky to figure out...

1-9, actually, but, yeah.  Maybe the addition of "assertions" that aren't
actually evaluated at runtime?

David