linux-kernel - Re: [PATCH 2/4] x86: SROP mitigation: implement signal canaries

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] [day] [month] [year] [list]

Message-ID: <20140516160301.GH1873@two.firstfloor.org>
Date:	Fri, 16 May 2014 18:03:01 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Erik Bosman <erik@...emu.org>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] x86: SROP mitigation: implement signal canaries

> Hrmz.. FP state is aligned on a 64 byte boundary, the signal frame (separately)
> on a 16 byte-sizeof(long) boundary.  But it looks like that for 32 and 64 bit
> rt_sigreturn this means no padding :-/

There may be some unused bytes in the existing structures, perhaps not
continuous.

-Andi
--
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/