linux-kernel - Re: [PATCH 06/10] signal: fix premature completion of group stop when interfered by ptrace

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]

Message-ID: <20110131110007.GF7459@htj.dyndns.org>
Date:	Mon, 31 Jan 2011 12:00:07 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Roland McGrath <roland@...hat.com>
Cc:	oleg@...hat.com, jan.kratochvil@...hat.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 06/10] signal: fix premature completion of group stop
 when interfered by ptrace

Hello,

On Fri, Jan 28, 2011 at 01:22:57PM -0800, Roland McGrath wrote:
> It feels nasty to add a word to task_struct just for this.
> I don't see another place to store such bookkeeping bits.

I have plans on separate out ptrace related stuff from task_struct so
that they're allocate iff they're used which will save some tens of
bytes on the task struct, so there at least is a plan to compensate
for the added cruft.

> But I'm not entirely convinced that we'll really need them when we
> conclude on fully cleaning up the whole picture.

I really don't know at this point.  I tried to make it share one of
the related fields but there needs to be a per-task field which is
protected by siglock and there currently isn't any, so...

Thanks.

-- 
tejun
--
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/