linux-kernel - Re: Kernel Bug in 2.4.35 when compiled gcc>=4.2.0 and -march=c3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 6 Aug 2007 15:05:29 +0200
From:	Segher Boessenkool <segher@...nel.crashing.org>
To:	Willy Tarreau <w@....eu>
Cc:	Axel Reinhold <axel@...akout.de>, linux-kernel@...r.kernel.org
Subject: Re: Kernel Bug in 2.4.35 when compiled gcc>=4.2.0 and -march=c3

> I still
> suspect that because the behaviour is different between 4.1 and 4.2, it
> might be a regression in 4.2,

The kernel code is wrong.  It might have accidentally worked
with GCC-4.1, but that doesn't mean GCC-4.2 has regressed.
Only supported features that stop working are regressions;
invalid code that stops working is, well, in the worst case
an improvement in diagnostics ;-)

Segher

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/