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Sender: Ingo Molnar <mingo.kernel.org@gmail.com>
Date: Wed, 13 Apr 2016 09:43:19 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Anton Blanchard <anton@samba.org>,
 Peter Zijlstra <peterz@infradead.org>, tglx@linutronix.de,
 efault@gmx.de, htejun@gmail.com, linux-kernel@vger.kernel.org,
 tj@kernel.org, torvalds@linux-foundation.org,
 zhaolei@cn.fujitsu.com, yangds.fnst@cn.fujitsu.com, hpa@zytor.com,
 Stephen Rothwell <sfr@canb.auug.org.au>,
 Michael Ellerman <mpe@ellerman.id.au>, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] sched/cpuacct: Check for NULL when using task_pt_regs()
Message-ID: <20160413074319.GA8968@gmail.com>
References: <aa171da036b520b51c79549e9b3215d29473f19d.1458635566.git.zhaolei@cn.fujitsu.com>
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 <20160406065436.GB3078@gmail.com> <20160406203219.788ae7cf@kryten>
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* Srikar Dronamraju <srikar@linux.vnet.ibm.com> wrote:

> * Anton Blanchard <anton@samba.org> [2016-04-06 21:59:50]:
> 
> > Looks good, and the patch below does fix the oops for me.
> > 
> > Anton
> > --
> > 
> > task_pt_regs() can return NULL for kernel threads, so add a check.
> > This fixes an oops at boot on ppc64.
> > 
> > Signed-off-by: Anton Blanchard <anton@samba.org>
> 
> Works for me too.
> 
> Reported-and-Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>

Could someone please re-send the fix, because it has not reached me nor lkml.

Thanks,

	Ingo