From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Joe Lawrence <joe.lawrence@redhat.com>,
Russell Currey <ruscur@russell.cc>,
"live-patching@vger.kernel.org" <live-patching@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Jessica Yu <jeyu@kernel.org>, Jordan Niethe <jniethe5@gmail.com>
Subject: Re: ppc64le STRICT_MODULE_RWX and livepatch apply_relocate_add() crashes
Date: Mon, 13 Dec 2021 07:42:06 +0000 [thread overview]
Message-ID: <bed88ff4-e5d3-4b78-4f28-29fc635c2f97@csgroup.eu> (raw)
In-Reply-To: <f8a96ac1-fda3-92da-cf27-0992a43a2f3f@redhat.com>
Le 01/11/2021 à 14:48, Joe Lawrence a écrit :
> On 11/1/21 5:20 AM, Russell Currey wrote:
>> I'm looking into this now, will update when there's progress. I
>> personally wasn't aware but Jordan flagged this as an issue back in
>> August [0]. Are the selftests in the klp-convert tree sufficient for
>> testing? I'm not especially familiar with livepatching & haven't used
>> the userspace tools.
>>
>
> Hi Russell, thanks for taking a look.
>
> Testing with that klp-convert tree is probably the quickest and easiest
> way to verify the late relocations.
>
> I'm happy to setup and test additional tools (ie, kpatch-build) with any
> potential changes as I know they take longer to config and run.
>
Hello Joe,
I'm implementing LIVEPATCH on PPC32 and I wanted to test with
STRICT_MODULE_RWX enabled so I took your branch as suggested, but I'm
getting the following errors on build. What shall I do ?
CALL scripts/checksyscalls.sh
CALL scripts/atomic/check-atomics.sh
CHK include/generated/compile.h
KLP lib/livepatch/test_klp_convert1.ko
klp-convert: section .rela.klp.module_relocs.test_klp_convert_mod length
beyond nr_entries
klp-convert: Unable to load user-provided sympos
make[2]: *** [scripts/Makefile.modfinal:79:
lib/livepatch/test_klp_convert1.ko] Error 255
KLP lib/livepatch/test_klp_convert2.ko
klp-convert: section .rela.klp.module_relocs.test_klp_convert_mod length
beyond nr_entries
klp-convert: Unable to load user-provided sympos
make[2]: *** [scripts/Makefile.modfinal:79:
lib/livepatch/test_klp_convert2.ko] Error 255
KLP lib/livepatch/test_klp_convert_sections.ko
klp-convert: section .rela.klp.module_relocs.test_klp_convert_mod length
beyond nr_entries
klp-convert: Unable to load user-provided sympos
make[2]: *** [scripts/Makefile.modfinal:79:
lib/livepatch/test_klp_convert_sections.ko] Error 255
make[2]: Target '__modfinal' not remade because of errors.
make[1]: *** [scripts/Makefile.modpost:145: __modpost] Error 2
make: *** [Makefile:1770: modules] Error 2
Christophe
next prev parent reply other threads:[~2021-12-13 7:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 2:43 ppc64le STRICT_MODULE_RWX and livepatch apply_relocate_add() crashes Joe Lawrence
2021-11-01 9:20 ` Russell Currey
2021-11-01 13:48 ` Joe Lawrence
2021-12-13 7:42 ` Christophe Leroy [this message]
2021-12-13 14:47 ` Joe Lawrence
2021-12-13 16:36 ` Christophe Leroy
2021-12-13 17:26 ` Joe Lawrence
2021-12-14 12:44 ` Christophe Leroy
2021-12-14 13:00 ` Joe Lawrence
2021-12-14 13:35 ` Christophe Leroy
2021-11-03 21:33 ` Suraj Jitindar Singh
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