lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210226140352.3477860-1-arnd@kernel.org>
Date:   Fri, 26 Feb 2021 15:03:39 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Ard Biesheuvel <ardb@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        David Brazdil <dbrazdil@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: vmlinux.lds.S: keep .entry.tramp.text section

From: Arnd Bergmann <arnd@...db.de>

When building with CONFIG_LD_DEAD_CODE_DATA_ELIMINATION,
I sometimes see an assertion

 ld.lld: error: Entry trampoline text too big

This happens when any reference to the trampoline is discarded at link
time. Marking the section as KEEP() avoids the assertion, but I have
not figured out whether this is the correct solution for the underlying
problem.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm64/kernel/vmlinux.lds.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 926cdb597a45..c5ee9d5842db 100644
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -96,7 +96,7 @@ jiffies = jiffies_64;
 #define TRAMP_TEXT					\
 	. = ALIGN(PAGE_SIZE);				\
 	__entry_tramp_text_start = .;			\
-	*(.entry.tramp.text)				\
+	KEEP(*(.entry.tramp.text))			\
 	. = ALIGN(PAGE_SIZE);				\
 	__entry_tramp_text_end = .;
 #else
-- 
2.29.2

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ