linux-kernel - Re: [PATCH 2/2] coredump: add a new elf note with siginfo fields of the signal

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:	Thu, 13 Sep 2012 17:52:59 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Amerigo Wang <amwang@...hat.com>,
	Roland McGrath <roland@...k.frob.com>
Subject: Re: [PATCH 2/2] coredump: add a new elf note with siginfo fields
	of the signal

forgot to mention...

On 09/13, Oleg Nesterov wrote:
>
> Not sure this is right. I think fill_siginfo_note() should either do
> memcpy() and let userspace to decode this (raw) info, or this layout
> should be unified with copy_siginfo_to_user().

And note that we simply do not know what this siginfo contains if
si_code < 0. Again, please look at copy_siginfo_to_user().

> Note also that we do not expose the upper bits of si_code to user-space,
> probably coredump should do the same, I dunno.

If it was sent by kernel, I meant.

Oleg.

--
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/