linux-kernel - Re: [PATCH] ppc64/perf: Fix oops when kthread execs user process

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Message-Id: <5943A608.30207@linux.vnet.ibm.com>
Date:   Fri, 16 Jun 2017 15:04:00 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     benh@...nel.crashing.org, paulus@...ba.org, mingo@...nel.org,
        peterz@...radead.org, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, naveen.n.rao@...ux.vnet.ibm.com,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>
Subject: Re: [PATCH] ppc64/perf: Fix oops when kthread execs user process

Hi Michael,

On Friday 16 June 2017 10:42 AM, Michael Ellerman wrote:
>
> That function (perf_get_regs_user()) didn't exist until 4.7, ie:
>
> ed4a4ef85cf5 ("powerpc/perf: Add support for sampling interrupt register state")
>
> So there must be something else going on.
>
> I'll hold off on merging this until we've worked it out.

That was my mistake. It's v4.7 not v4.4.

Thanks,
Ravi