Re: [PATCH] Fix offset2lib issue for x86*, ARM*, PowerPC and MIPS

From: David Daney
Date: Thu Feb 26 2015 - 17:43:30 EST


On 02/26/2015 02:38 PM, Andrew Morton wrote:
[...]

From: Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix

Consolidate randomize_et_dyn() implementations into fs/binfmt_elf.c.

There doesn't seem to be a compile-time way of making randomize_et_dyn()
go away on architectures which don't need it, so mark it __weak to cause
it to be discarded at link time.

Cc: "H. Peter Anvin"<hpa@xxxxxxxxx>
Cc: Benjamin Herrenschmidt<benh@xxxxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas<catalin.marinas@xxxxxxx>
Cc: Hector Marco Gisbert<hecmargi@xxxxxx>
Cc: Hector Marco-Gisbert<hecmargi@xxxxxx>
Cc: Ingo Molnar<mingo@xxxxxxxxxx>
Cc: Ismael Ripoll<iripoll@xxxxxx>
Cc: Kees Cook<keescook@xxxxxxxxxxxx>
Cc: Ralf Baechle<ralf@xxxxxxxxxxxxxx>
Cc: Russell King<rmk@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner<tglx@xxxxxxxxxxxxx>
Cc: Will Deacon<will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton<akpm@xxxxxxxxxxxxxxxxxxxx>
[...]
diff -puN arch/arm64/include/asm/elf.h~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix arch/arm64/include/asm/elf.h
--- a/arch/arm64/include/asm/elf.h~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix
+++ a/arch/arm64/include/asm/elf.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2012 ARM Ltd.
+ * Copyright (C) 20q12 ARM Ltd.

This particular change looks like it may be a typo.

*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as

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