From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Alexander Fyodorov <halcy@yandex.ru>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: [PATCH rt] Fix races in ptrace
Date: Mon, 12 Aug 2013 18:41:45 +0200 [thread overview]
Message-ID: <20130812164145.GJ23040@linutronix.de> (raw)
In-Reply-To: <102271374683007@web8f.yandex.ru>
* Alexander Fyodorov | 2013-07-24 20:23:27 [+0400]:
>Hi all,
Hi Alexander,
>I ran into a race on 2.6.33-rt kernel which I think still exists in the latest RT patches. The following patch fixes it but it may be incomplete: probably spinlock should be taken in all other places that check saved_state too. I only compile-tested this patch for 3.6-rt.
It looks interresting, thanks for the report. Do you have maybe a
test-case which can provoke the bug?
Sebastian
next prev parent reply other threads:[~2013-08-12 16:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-24 16:23 [PATCH rt] Fix races in ptrace Alexander Fyodorov
2013-08-12 16:41 ` Sebastian Andrzej Siewior [this message]
2013-08-12 21:13 ` Alexander Fyodorov
2013-08-21 17:24 ` Sebastian Andrzej Siewior
2013-08-22 14:23 ` Alexander Fyodorov
2013-08-29 16:33 ` Sebastian Andrzej Siewior
2013-08-29 17:26 ` Alexander Fyodorov
2013-08-29 18:28 ` Sebastian Andrzej Siewior
2013-08-29 18:47 ` Alexander Fyodorov
2013-08-29 18:49 ` Sebastian Andrzej Siewior
2013-11-30 20:07 ` [PATCH v2] ptrace: fix ptrace vs tasklist_lock race Sebastian Andrzej Siewior
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