From: "Ray Lee" <ray-lk@madrabbit.org>
To: "Eric Dumazet" <dada1@cosmosbay.com>
Cc: "Linus Torvalds" <torvalds@linux-foundation.org>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"John Reiser" <jreiser@bitwagon.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
security@kernel.org, tytso@mit.edu,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
mpm@selenic.com, linux-sparse@vger.kernel.org
Subject: Re: Signed divides vs shifts (Re: [Security] /dev/urandom uses uninit bytes, leaks user data)
Date: Mon, 17 Dec 2007 10:05:35 -0800 [thread overview]
Message-ID: <2c0942db0712171005w65bbb512p71a4f9b1fc65c6a7@mail.gmail.com> (raw)
In-Reply-To: <20071217185557.0b501e23.dada1@cosmosbay.com>
On Dec 17, 2007 9:55 AM, Eric Dumazet <dada1@cosmosbay.com> wrote:
> - mid = (last - first) / 2 + first;
> + while (low <= high) {
> + mid = (low + high) / 2;
I think you just introduced a bug. Think about what happens if
low=high=MAX_LONG/2 + 1.
next prev parent reply other threads:[~2007-12-17 18:05 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 19:34 /dev/urandom uses uninit bytes, leaks user data John Reiser
2007-12-14 20:13 ` Matt Mackall
2007-12-14 20:45 ` John Reiser
2007-12-14 23:23 ` Theodore Tso
2007-12-15 0:30 ` John Reiser
2007-12-15 4:32 ` Theodore Tso
2007-12-17 16:30 ` John Reiser
2007-12-17 17:36 ` Theodore Tso
2007-12-18 0:52 ` Andy Lutomirski
2007-12-18 3:05 ` Theodore Tso
2007-12-18 3:13 ` David Newall
2007-12-18 3:46 ` Theodore Tso
2007-12-18 4:09 ` David Newall
2007-12-18 4:23 ` Theodore Tso
2007-12-19 22:43 ` Bill Davidsen
2007-12-19 22:40 ` Bill Davidsen
2007-12-20 4:18 ` Andrew Lutomirski
2007-12-20 20:17 ` Phillip Susi
2007-12-21 16:10 ` Andrew Lutomirski
2007-12-22 1:14 ` Theodore Tso
2007-12-26 18:30 ` Phillip Susi
2007-12-20 20:36 ` Theodore Tso
2007-12-27 10:44 ` Pavel Machek
2007-12-18 5:12 ` David Schwartz
2007-12-17 20:59 ` David Schwartz
2007-12-15 7:13 ` Herbert Xu
2007-12-15 16:30 ` Matt Mackall
2007-12-17 17:28 ` Signed divides vs shifts (Re: [Security] /dev/urandom uses uninit bytes, leaks user data) Linus Torvalds
2007-12-17 17:48 ` Al Viro
2007-12-17 17:55 ` Eric Dumazet
2007-12-17 18:05 ` Ray Lee [this message]
2007-12-17 18:10 ` Eric Dumazet
2007-12-17 18:12 ` Ray Lee
2007-12-17 18:23 ` Al Viro
2007-12-17 18:28 ` [Security] Signed divides vs shifts (Re: " Linus Torvalds
2007-12-17 19:08 ` Al Viro
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