linux-kernel - Re: [PATCH 0/2] powerpc: Fix livepatch module re-patching issue

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 05 Feb 2023 11:46:12 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Josh Poimboeuf <jpoimboe@...nel.org>
Cc:     live-patching@...r.kernel.org, Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Song Liu <song@...nel.org>
Subject: Re: [PATCH 0/2] powerpc: Fix livepatch module re-patching issue

Josh Poimboeuf <jpoimboe@...nel.org> writes:
> On Tue, Jan 24, 2023 at 07:38:03PM -0800, Josh Poimboeuf wrote:
>> Fix a livepatch bug seen when reloading a patched module.
>> 
>> This is the powerpc counterpart to Song Liu's fix for a similar issue on
>> x86:
>> 
>>   https://lkml.kernel.org/lkml/20230121004945.697003-2-song@kernel.org
>> 
>> Josh Poimboeuf (2):
>>   powerpc/module_64: Improve restore_r2() return semantics
>>   powerpc/module_64: Fix "expected nop" error on module re-patching
>> 
>>  arch/powerpc/kernel/module_64.c | 29 ++++++++++++++++++-----------
>>  1 file changed, 18 insertions(+), 11 deletions(-)
>
> Hi Michael,
>
> Ping?  Any objections to this?
>
> The x86 counterpart to this is queued for 6.3, it would be nice if this
> also landed.  We could take it through the livepatch tree if needed.

It's in my next since about a week. Sorry I forgot to send the
"accepted" emails (which I still don't have automated :/ ).

337251c7114e1 ("powerpc/module_64: Fix "expected nop" error on module re-patching")

cheers