linux-kernel - Re: [PATCH] powerpc/kprobes: Use probe

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Message-ID: <87r1unfcvc.fsf@mpe.ellerman.id.au>
Date:   Wed, 10 Jun 2020 20:12:39 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Christoph Hellwig <hch@...radead.org>,
        Michael Ellerman <patch-notifications@...erman.id.au>
Cc:     Christophe Leroy <christophe.leroy@....fr>,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        naveen.n.rao@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/kprobes: Use probe_address() to read instructions

Christoph Hellwig <hch@...radead.org> writes:
> On Tue, Jun 09, 2020 at 03:28:38PM +1000, Michael Ellerman wrote:
>> On Mon, 24 Feb 2020 18:02:10 +0000 (UTC), Christophe Leroy wrote:
>> > In order to avoid Oopses, use probe_address() to read the
>> > instruction at the address where the trap happened.
>> 
>> Applied to powerpc/next.
>> 
>> [1/1] powerpc/kprobes: Use probe_address() to read instructions
>>       https://git.kernel.org/powerpc/c/9ed5df69b79a22b40b20bc2132ba2495708b19c4
>
> probe_addresss has been renamed to get_kernel_nofault in the -mm
> queue that Andrew sent off to Linus last night.

That commit above is actually already in mainline, I was just _really_
behind on sending the patch notifications.

cheers