All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nathan Chancellor <natechancellor@gmail.com>
To: Russell King <linux@armlinux.org.uk>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Abbott Liu <liuwenliang@huawei.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Jian Cai <jiancai@google.com>,
	clang-built-linux@googlegroups.com,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Nathan Chancellor <natechancellor@gmail.com>,
	Mike Rapoport <rppt@linux.ibm.com>, Will Deacon <will@kernel.org>,
	Ard Biesheuvel <ardb@kernel.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: Link with '-z norelro'
Date: Mon,  9 Nov 2020 18:56:32 -0700	[thread overview]
Message-ID: <20201110015632.2509254-1-natechancellor@gmail.com> (raw)
In-Reply-To: <CAKwvOdmqEmPGqbkg9KpgXh+jG7aWtFVn16SCUxqANBYQPLhoXg@mail.gmail.com>

When linking a multi_v7_defconfig + CONFIG_KASAN=y kernel with
LD=ld.lld, the following error occurs:

$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- LLVM=1 zImage
ld.lld: error: section: .exit.data is not contiguous with other relro sections

LLD defaults to '-z relro', which is unneeded for the kernel because
program headers are not used nor is there any position independent code
generation or linking for ARM. Add '-z norelro' to LDFLAGS_vmlinux to
avoid this error.

Link: https://github.com/ClangBuiltLinux/linux/issues/1189
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
 arch/arm/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 4d76eab2b22d..3c0a64cefe52 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -10,7 +10,7 @@
 #
 # Copyright (C) 1995-2001 by Russell King
 
-LDFLAGS_vmlinux	:= --no-undefined -X --pic-veneer
+LDFLAGS_vmlinux	:= --no-undefined -X --pic-veneer -z norelro
 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 LDFLAGS_vmlinux	+= --be8
 KBUILD_LDFLAGS_MODULE	+= --be8

base-commit: a0796429c6abecf8afaeb65b1db286af1fb579d1
-- 
2.29.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-11-10  1:57 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-19  8:41 [PATCH 0/5 v16] KASan for Arm Linus Walleij
2020-10-19  8:41 ` [PATCH 1/5 v16] ARM: Disable KASan instrumentation for some code Linus Walleij
2020-10-19  8:41 ` [PATCH 2/5 v16] ARM: Replace string mem* functions for KASan Linus Walleij
2020-11-06  7:49   ` Naresh Kamboju
2020-11-06  7:49     ` Naresh Kamboju
2020-11-06  8:26     ` Linus Walleij
2020-11-06  8:26       ` Linus Walleij
2020-11-06  8:28       ` Ard Biesheuvel
2020-11-06  8:28         ` Ard Biesheuvel
2020-11-06  9:44         ` Nathan Chancellor
2020-11-06  9:44           ` Nathan Chancellor
2020-11-06 13:37           ` Linus Walleij
2020-11-06 13:37             ` Linus Walleij
2020-11-06 15:15             ` Russell King - ARM Linux admin
2020-11-06 15:15               ` Russell King - ARM Linux admin
2020-11-06 15:18               ` Ard Biesheuvel
2020-11-06 15:18                 ` Ard Biesheuvel
2020-11-06 18:09               ` Nathan Chancellor
2020-11-06 18:09                 ` Nathan Chancellor
2020-11-09 16:02               ` Linus Walleij
2020-11-09 16:02                 ` Linus Walleij
2020-11-09 16:06                 ` Russell King - ARM Linux admin
2020-11-09 16:06                   ` Russell King - ARM Linux admin
2020-11-10 12:04                   ` Ard Biesheuvel
2020-11-10 12:04                     ` Ard Biesheuvel
2020-11-12 13:51                     ` Linus Walleij
2020-11-12 13:51                       ` Linus Walleij
2020-11-12 15:05                       ` Ard Biesheuvel
2020-11-12 15:05                         ` Ard Biesheuvel
2020-11-12 17:52                         ` Nathan Chancellor
2020-11-12 17:52                           ` Nathan Chancellor
2020-11-16 15:16                           ` Ard Biesheuvel
2020-11-16 15:16                             ` Ard Biesheuvel
2020-11-09 16:05             ` Linus Walleij
2020-11-09 16:05               ` Linus Walleij
2020-10-19  8:41 ` [PATCH 3/5 v16] ARM: Define the virtual space of KASan's shadow region Linus Walleij
2020-10-19  8:41 ` [PATCH 4/5 v16] ARM: Initialize the mapping of KASan shadow memory Linus Walleij
2020-10-19  8:54   ` Ard Biesheuvel
2020-10-19  9:34   ` Mike Rapoport
2020-10-19  9:42     ` Ard Biesheuvel
2020-10-19 10:04       ` Mike Rapoport
2020-10-19 12:57         ` Linus Walleij
2020-10-19  8:41 ` [PATCH 5/5 v16] ARM: Enable KASan for ARM Linus Walleij
2020-10-29 17:45 ` [PATCH 0/5 v16] KASan for Arm Dmitry Osipenko
2020-10-29 17:45   ` Dmitry Osipenko
2020-10-29 18:10   ` Ard Biesheuvel
2020-10-29 18:10     ` Ard Biesheuvel
2020-10-29 19:41     ` Dmitry Osipenko
2020-10-29 19:41       ` Dmitry Osipenko
2020-11-02 18:10     ` Dmitry Osipenko
2020-11-02 18:10       ` Dmitry Osipenko
2020-10-30  0:29 ` Nathan Chancellor
2020-10-30  0:38   ` Nick Desaulniers
2020-10-30  1:32     ` Nathan Chancellor
2020-10-30  7:52       ` Ard Biesheuvel
2020-10-30  7:56         ` Nathan Chancellor
2020-10-30  7:58           ` Ard Biesheuvel
2020-10-30  8:04             ` Nathan Chancellor
2020-10-30  8:10               ` Ard Biesheuvel
2020-10-30  8:45                 ` Nathan Chancellor
2020-10-30  8:51                   ` Arnd Bergmann
2020-10-30  9:09                     ` Nathan Chancellor
2020-11-05  0:30                       ` Fāng-ruì Sòng
2020-11-05  0:38                         ` Nick Desaulniers
2020-11-05  7:52                           ` Ard Biesheuvel
2020-11-05 10:24                             ` Mike Rapoport
2020-11-09 23:47       ` Nick Desaulniers
2020-11-10  1:56         ` Nathan Chancellor [this message]
2020-11-10  2:05           ` [PATCH] ARM: Link with '-z norelro' Nick Desaulniers
2020-11-10 18:49             ` Nick Desaulniers
2020-11-12  2:52               ` Nathan Chancellor
2020-12-02 23:05                 ` Nick Desaulniers
2020-11-05 22:10 ` [PATCH 0/5 v16] KASan for Arm Ahmad Fatoum

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=20201110015632.2509254-1-natechancellor@gmail.com \
    --to=natechancellor@gmail.com \
    --cc=ardb@kernel.org \
    --cc=arnd@arndb.de \
    --cc=aryabinin@virtuozzo.com \
    --cc=clang-built-linux@googlegroups.com \
    --cc=f.fainelli@gmail.com \
    --cc=jiancai@google.com \
    --cc=linus.walleij@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux@armlinux.org.uk \
    --cc=liuwenliang@huawei.com \
    --cc=rppt@linux.ibm.com \
    --cc=will@kernel.org \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.