From: Will Deacon <will.deacon@arm.com>
To: Laura Abbott <labbott@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
Kees Cook <keescook@google.com>,
Linux-Next Mailing List <linux-next@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Alexander Popov <alex.popov@linux.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: linux-next: build failure after merge of the kspp tree
Date: Mon, 30 Jul 2018 17:37:23 +0100 [thread overview]
Message-ID: <20180730163722.GD4276@arm.com> (raw)
In-Reply-To: <d2a8ceda-a0e7-66a3-4d47-66f1f5f4e839@redhat.com>
Hi Laura,
On Mon, Jul 30, 2018 at 07:47:52AM -0700, Laura Abbott wrote:
> On 07/30/2018 12:33 AM, Stephen Rothwell wrote:
> >On Fri, 27 Jul 2018 13:55:22 +0100 Will Deacon <will.deacon@arm.com> wrote:
> >>On Fri, Jul 27, 2018 at 08:55:11PM +1000, Stephen Rothwell wrote:
> >>>Actually, it may have been caused by commit
> >>>
> >>> 0b3e336601b8 ("arm64: Add support for STACKLEAK gcc plugin")
> >>>
> >>>from the arm64 tree.
> >>
> >>Thanks, Stephen. I managed to reproduce this by merging for-next/kspp from
> >>Kees's tree and for-next/core from the arm64 tree. The failure happens when
> >>building the EFI stub, so the commit you mention above is almost certainly
> >>the culprit.
> >>
> >>We build the stub with the following GCC invocation:
> >>
> >> gcc -Wp,-MD,drivers/firmware/efi/libstub/.efi-stub-helper.o.d -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/4.9/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./arch/x86/include/generated/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -include ./include/linux/compiler_types.h -D__KERNEL__ -mcmodel=small -m64 -D__KERNEL__ -O2 -fPIC -fno-strict-aliasing -mno-red-zone -mno-mmx -mno-sse -fshort-wchar -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY -ffreestanding -fno-stack-protector -fplugin-arg-stackleak_plugin-disable -fno-builtin -DKBUILD_BASENAME='"efi_stub_helper"' -DKBUILD_MODNAME='"efi_stub_helper"' -c -o drivers/firmware/efi/libstub/.tmp_efi-stub-helper.o drivers/firmware/efi/libstub/e
fi-stub-helper.c
> >>
> >>so given that we're not passing any -fplugin= option anyway (because we
> >>override KBUILD_CFLAGS for the stub), I don't understand why we need
> >>to the disable option at all.
> >>
> >>Laura?
> >
> >So today I am just trying reverting that arm64 tree commit.
> >
>
> It looks like arm and arm64 start from the KBUILD_CFLAGS and
> then filter out vs. x86 which just specifies the CFLAGS individually,
> hence x86 picking up the disable when there's no plugin at all. This
> seems to be the simplest fix unless we want to change arm64 to not
> pick up all the KBUILD_CFLAGS to match x86. That seems like a more
> involved process though. If this is okay, I can send a patch
> that also sticks a comment in there explaining why fixing on arm64
> is necessary.
Indeed, I posted a very similar patch last week!
https://lore.kernel.org/lkml/CAGXu5jJ=0YBYKkQM3=KZRp1o3fT0yGY6-0UDkkit0WenFM3oDg@mail.gmail.com/T/#m1bd3d2de78e33da4d1f496fd82be7cf088ebaa06
If you send a version with a commit message, I'm happy to pick it up.
Cheers,
Will
next prev parent reply other threads:[~2018-07-30 16:37 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-27 9:02 linux-next: build failure after merge of the kspp tree Stephen Rothwell
2018-07-27 9:06 ` Stephen Rothwell
2018-07-27 10:55 ` Stephen Rothwell
2018-07-27 12:55 ` Will Deacon
2018-07-27 13:01 ` Will Deacon
2018-07-27 13:27 ` Will Deacon
2018-07-27 16:00 ` Kees Cook
2018-07-30 7:33 ` Stephen Rothwell
2018-07-30 14:47 ` Laura Abbott
2018-07-30 16:37 ` Will Deacon [this message]
2018-07-30 18:31 ` [PATCH] efi/libstub: Only disable stackleak plugin for arm64 Laura Abbott
2018-07-30 19:09 ` Kees Cook
2018-07-31 8:51 ` Will Deacon
2018-07-31 10:09 ` linux-next: build failure after merge of the kspp tree Will Deacon
2018-07-31 11:27 ` Stephen Rothwell
-- strict thread matches above, loose matches on Subject: below --
2024-03-05 3:50 Stephen Rothwell
2024-03-05 9:54 ` Kees Cook
2023-09-14 1:50 Stephen Rothwell
2023-09-14 3:07 ` Kees Cook
2023-01-05 2:25 Stephen Rothwell
2023-01-05 3:22 ` Kees Cook
2023-01-05 4:24 ` Stephen Rothwell
2022-12-01 3:07 Stephen Rothwell
2022-12-01 16:31 ` Kees Cook
2022-07-28 10:55 Stephen Rothwell
2022-07-28 15:12 ` Matthias Kaehlcke
2022-05-05 7:40 Stephen Rothwell
2022-05-07 17:18 ` Kees Cook
2022-03-16 7:32 Stephen Rothwell
2022-03-17 1:01 ` Linus Walleij
2022-03-17 8:24 ` Marc Zyngier
2022-03-09 10:10 Stephen Rothwell
2022-03-09 16:52 ` Kees Cook
2022-03-09 16:58 ` Hans de Goede
2022-03-09 17:18 ` Kees Cook
2022-02-28 22:27 Stephen Rothwell
2022-02-28 23:02 ` Kees Cook
2022-03-02 9:16 ` Stephen Rothwell
2022-03-03 7:29 ` Stephen Rothwell
2022-01-30 23:09 Stephen Rothwell
2022-01-31 4:04 ` Kees Cook
2022-01-31 4:59 ` Stephen Rothwell
2022-01-31 6:19 ` Kees Cook
2022-01-31 19:10 ` Saeed Mahameed
2022-01-31 21:06 ` Kees Cook
2022-01-30 22:34 Stephen Rothwell
2022-01-30 23:24 ` Herbert Xu
2022-01-31 0:15 ` Stephen Rothwell
2022-01-31 0:20 ` Herbert Xu
2022-01-31 0:41 ` Stephen Rothwell
2022-01-25 3:50 Stephen Rothwell
2022-01-25 7:44 ` Kees Cook
2022-01-25 13:27 ` Masami Hiramatsu
2022-01-25 14:01 ` Steven Rostedt
2022-01-25 17:53 ` Kees Cook
2022-01-25 14:31 ` Masami Hiramatsu
2022-01-25 15:49 ` Steven Rostedt
2022-01-25 17:54 ` Kees Cook
2022-01-25 18:41 ` Steven Rostedt
2022-01-25 20:57 ` Kees Cook
2022-01-25 21:23 ` Steven Rostedt
2022-01-25 21:28 ` Steven Rostedt
2022-01-25 22:07 ` Kees Cook
2022-01-25 22:21 ` Steven Rostedt
2022-01-26 0:35 ` Masami Hiramatsu
2022-01-26 1:16 ` Steven Rostedt
2022-01-26 3:18 ` Kees Cook
2022-01-26 3:26 ` Steven Rostedt
2022-01-26 19:41 ` Beau Belgrave
2022-01-26 21:00 ` Steven Rostedt
2022-01-26 3:52 ` Masami Hiramatsu
2022-01-26 4:06 ` Steven Rostedt
2022-01-26 3:17 ` Kees Cook
2022-01-25 22:01 ` Kees Cook
2022-01-25 3:24 Stephen Rothwell
2022-01-25 3:43 ` Kees Cook
2022-02-08 4:42 ` Stephen Rothwell
2022-02-08 6:13 ` Kees Cook
2022-01-25 2:55 Stephen Rothwell
2022-01-25 3:02 ` Stephen Rothwell
2022-01-25 3:22 ` Kees Cook
2022-01-25 0:57 Stephen Rothwell
2022-01-25 3:35 ` Kees Cook
2022-01-25 14:07 ` David Sterba
2021-09-16 3:34 Stephen Rothwell
2021-09-16 6:00 ` Kees Cook
2021-08-26 7:52 Stephen Rothwell
2021-08-26 15:38 ` Kees Cook
2020-06-23 3:51 Stephen Rothwell
2020-06-23 3:56 ` David Miller
2020-06-21 13:48 Stephen Rothwell
2020-06-21 15:36 ` Kees Cook
2017-11-08 5:23 Stephen Rothwell
2017-11-08 23:43 ` Kees Cook
2017-11-09 0:18 ` Darrick J. Wong
2017-11-09 0:31 ` Kees Cook
2017-06-20 4:56 Stephen Rothwell
2017-06-20 5:39 ` Kees Cook
2017-06-20 5:42 ` John Johansen
2017-06-20 5:39 ` John Johansen
2017-06-26 18:19 ` Kees Cook
2017-06-27 3:33 ` James Morris
2017-06-27 22:16 ` Kees Cook
2017-06-28 5:48 ` James Morris
2017-06-16 1:30 Stephen Rothwell
2017-06-16 2:51 ` Daniel Micay
2017-06-16 2:52 ` Daniel Micay
2017-06-16 3:20 ` Kees Cook
2017-06-16 3:31 ` Stephen Rothwell
2017-06-19 0:23 ` Stephen Rothwell
2017-06-19 21:01 ` Kees Cook
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