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Date: Thu, 11 Oct 2007 01:18:00 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: Jiri Kosina <jkosina@...e.cz> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] [RESEND] i386 and x86_64: randomize brk() On Tue, 11 Sep 2007 14:17:24 +0200 (CEST) Jiri Kosina <jkosina@...e.cz> wrote: > i386 and x86_64: randomize brk() I seem to have a different copy of this patch from the one which you originally sent. It's the one which implements arch_randomize_brk() in each arch's header file. Mayeb it wasn't cc'ed to a mailing list of maybe I just lost the email, dunno. Anyway, it breaks on ia64: CC arch/ia64/ia32/binfmt_elf32.o In file included from arch/ia64/ia32/binfmt_elf32.c:49: arch/ia64/ia32/../../../fs/binfmt_elf.c: In function `load_elf_binary': arch/ia64/ia32/../../../fs/binfmt_elf.c:1085: error: implicit declaration of function `arch_randomize_brk' make[1]: *** [arch/ia64/ia32/binfmt_elf32.o] Error 1 make: *** [arch/ia64/ia32/binfmt_elf32.o] Error 2 This is because ia64 takes the exceptional stupidity which is our elf-handling build system and adds an extra layer of stupidity on top of it. Look: akpm2:/usr/src/25> head include/asm-ia64/elf.h #ifndef _ASM_IA64_ELF_H #define _ASM_IA64_ELF_H /* * ELF-specific definitions. * * Copyright (C) 1998-1999, 2002-2004 Hewlett-Packard Co * David Mosberger-Tang <davidm@....hp.com> */ akpm2:/usr/src/25> grep -r _ASM_IA64_ELF_H arch/ia64 arch/ia64/ia32/ia32priv.h:#define _ASM_IA64_ELF_H /* Don't include elf.h */ can you believe this stuff? Anyway, I'm presently running with this loveliness: --- a/include/asm-ia64/elf.h~i386-and-x86_64-randomize-brk-2-fix +++ a/include/asm-ia64/elf.h @@ -249,8 +249,10 @@ do { \ #endif /* __KERNEL__ */ +#endif /* _ASM_IA64_ELF_H */ + +#ifndef IA64_IS_WEIRD static inline void arch_randomize_brk(void) { } - -#endif /* _ASM_IA64_ELF_H */ +#endif _ Wanna see if there's something saner we can do please? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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