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
next prev parent reply other threads:[~2020-11-10 1:57 UTC|newest]
Thread overview: 53+ 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 8:26 ` Linus Walleij
2020-11-06 8:28 ` Ard Biesheuvel
2020-11-06 9:44 ` Nathan Chancellor
2020-11-06 13:37 ` Linus Walleij
2020-11-06 15:15 ` Russell King - ARM Linux admin
2020-11-06 15:18 ` Ard Biesheuvel
2020-11-06 18:09 ` Nathan Chancellor
2020-11-09 16:02 ` Linus Walleij
2020-11-09 16:06 ` Russell King - ARM Linux admin
2020-11-10 12:04 ` Ard Biesheuvel
2020-11-12 13:51 ` Linus Walleij
2020-11-12 15:05 ` Ard Biesheuvel
2020-11-12 17:52 ` Nathan Chancellor
2020-11-16 15:16 ` Ard Biesheuvel
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 18:10 ` Ard Biesheuvel
2020-10-29 19:41 ` 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 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).