linux-kernel - Re: splat in kretprobe in get_task

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Message-ID: <r3nha409t6q.fsf@perdido.sfo.corp.google.com>
Date:	Wed, 04 Jun 2014 16:00:13 -0700
From:	Peter Moody <pmoody@...gle.com>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc:	ananth@...ibm.com, anil.s.keshavamurthy@...el.com,
	davem@...emloft.net, linux-kernel@...r.kernel.org,
	Kees Cook <keescook@...gle.com>
Subject: Re: splat in kretprobe in get_task_mm(current)


On Wed, Jun 04 2014 at 15:49, Masami Hiramatsu wrote:

> Here, as you can see, calling mmput() in kretprobe handler is actually the root cause
> of this problem.

Indeed, deferring the mmput to a workqueue solved my issue.

Thanks for your quick reply today!

Cheers,
peter
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