From: Oleg Nesterov <oleg@redhat.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Anton Arapov <anton@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Roland McGrath <roland@hack.frob.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] ptrace: fix set_task_blockstep()->update_debugctlmsr() logic
Date: Tue, 7 Aug 2012 17:31:31 +0200 [thread overview]
Message-ID: <20120807153131.GA14238@redhat.com> (raw)
In-Reply-To: <50213462.5040304@linutronix.de>
On 08/07, Sebastian Andrzej Siewior wrote:
>
> On 08/07/2012 05:15 PM, Oleg Nesterov wrote:
>> It turns out, original code is even more buggy than I thought.
>>
>> Ironically, "task != current" case is more difficult and so far
>> I do not see how we can handle this case correctly. I'll return
>> to this a bit later, currently I am working on other patches.
>
> maybe you could remove the autodectect mode and add helper for uprobe
> which disables it.
No, this won't help.
So. Sorry for delay, I'll try to return to this tomorrow. Today
I spent THE WHOLE DAY trying to understand what is wrong with my
emails, and I did nothing else.
Oleg.
next prev parent reply other threads:[~2012-08-07 15:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 16:29 [PATCH 0/2] ptrace: DEBUGCTLMSR_BTF fixes Oleg Nesterov
2012-08-03 16:29 ` [PATCH 1/2] ptrace: introduce set_task_blockstep() helper Oleg Nesterov
2012-08-03 16:29 ` [PATCH 2/2] ptrace: fix set_task_blockstep()->update_debugctlmsr() logic Oleg Nesterov
2012-08-03 16:43 ` Sebastian Andrzej Siewior
2012-08-03 17:38 ` Oleg Nesterov
2012-08-03 18:28 ` Sebastian Andrzej Siewior
2012-08-07 15:13 ` Oleg Nesterov
2012-08-07 9:41 ` Sebastian Andrzej Siewior
2012-08-07 10:52 ` Sebastian Andrzej Siewior
2012-08-07 15:15 ` Oleg Nesterov
2012-08-07 15:29 ` Sebastian Andrzej Siewior
2012-08-07 15:31 ` Oleg Nesterov [this message]
2012-08-07 15:12 ` Oleg Nesterov
2012-08-06 16:14 ` [PATCH 0/2] ptrace: DEBUGCTLMSR_BTF fixes Sebastian Andrzej Siewior
2012-08-07 15:15 ` Oleg Nesterov
2012-08-07 15:38 ` Sebastian Andrzej Siewior
2012-08-07 15:46 ` Oleg Nesterov
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