From: Nick Desaulniers <ndesaulniers@google.com>
To: Julien Thierry <jthierry@redhat.com>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Will Deacon <will@kernel.org>,
ycote@redhat.com, Fangrui Song <maskray@google.com>,
Bill Wendling <morbo@google.com>, Pete Swain <swine@google.com>,
Yonghyun Hwang <yonghyun@google.com>,
clang-built-linux <clang-built-linux@googlegroups.com>
Subject: Re: [RFC PATCH v2 00/13] objtool: add base support for arm64
Date: Fri, 5 Mar 2021 16:04:07 -0800 [thread overview]
Message-ID: <CAKwvOdmgRAJXVdaHAnZoYm-Y4Dt01CYxvsnJC6zaSwr5amRWBg@mail.gmail.com> (raw)
In-Reply-To: <20210305235102.384950-1-ndesaulniers@google.com>
On Fri, Mar 5, 2021 at 3:51 PM Nick Desaulniers <ndesaulniers@google.com> wrote:
>
> (in response to
> https://lore.kernel.org/linux-arm-kernel/20210303170932.1838634-1-jthierry@redhat.com/
> from the command line)
>
> > Changes since v1[2]:
> > - Drop gcc plugin in favor of -fno-jump-tables
>
> Thank you for this! I built+booted(under emulation) arm64 defconfig and built
> arm64 allmodconfig with LLVM=1 with this series applied.
>
> Tested-by: Nick Desaulniers <ndesaulniers@google.com>
>
> One thing I noticed was a spew of warnings for allmodconfig, like:
> init/main.o: warning: objtool: asan.module_ctor()+0xc: call without frame pointer save/setup
> init/main.o: warning: objtool: asan.module_dtor()+0xc: call without frame pointer save/setup
>
> I assume those are from the KASAN constructors. See also:
> https://github.com/ClangBuiltLinux/linux/issues/1238
>
> Can we disable HAVE_STACK_PROTECTOR if CC_IS_CLANG and CONFIG_KASAN is set,
> until we can resolve the above issue?
Ah, filtering the logs more, it looks like GCOV is has the same issue
KASAN does (known issue). Here's a filtered log:
https://gist.github.com/nickdesaulniers/01358015b33bd16ccd7d951c4a8c44e7
I'm curious about the failure to decode certain instructions?
The stack state mismatches are what are valuable to me; we'll need
some help digging into those at some point. The logs from defconfig
are clean.
--
Thanks,
~Nick Desaulniers
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-03-06 0:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 17:09 [RFC PATCH v2 00/13] objtool: add base support for arm64 Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 01/13] tools: Add some generic functions and headers Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 02/13] tools: arm64: Make aarch64 instruction decoder available to tools Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 03/13] tools: bug: Remove duplicate definition Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 04/13] objtool: arm64: Add base definition for arm64 backend Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 05/13] objtool: arm64: Decode add/sub instructions Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 06/13] objtool: arm64: Decode jump and call related instructions Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 07/13] objtool: arm64: Decode other system instructions Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 08/13] objtool: arm64: Decode load/store instructions Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 09/13] objtool: arm64: Decode LDR instructions Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 10/13] objtool: arm64: Accept padding in code sections Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 11/13] objtool: arm64: Handle supported relocations in alternatives Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 12/13] objtool: arm64: Ignore replacement section for alternative callback Julien Thierry
2021-03-03 17:09 ` [RFC PATCH v2 13/13] objtool: arm64: Enable stack validation for arm64 Julien Thierry
2021-03-07 10:25 ` Ard Biesheuvel
2021-03-09 14:31 ` Julien Thierry
2021-03-03 19:17 ` [RFC PATCH v2 00/13] objtool: add base support " Peter Zijlstra
2021-03-04 14:03 ` Julien Thierry
2021-03-05 23:51 ` Nick Desaulniers
2021-03-06 0:04 ` Nick Desaulniers [this message]
2021-03-09 14:27 ` Julien Thierry
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAKwvOdmgRAJXVdaHAnZoYm-Y4Dt01CYxvsnJC6zaSwr5amRWBg@mail.gmail.com \
--to=ndesaulniers@google.com \
--cc=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=clang-built-linux@googlegroups.com \
--cc=jpoimboe@redhat.com \
--cc=jthierry@redhat.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=masahiroy@kernel.org \
--cc=maskray@google.com \
--cc=morbo@google.com \
--cc=peterz@infradead.org \
--cc=swine@google.com \
--cc=will@kernel.org \
--cc=ycote@redhat.com \
--cc=yonghyun@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).