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authorFranck Bui-Huu <fbuihuu@gmail.com>2007-10-17 10:30:24 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 19:43:01 +0400
commitd68c9d6ae8f1fdae7d998158adc5ee106a2f8ce6 (patch)
tree91f1aef562d7769d06453e9a60ef599bcb057ba0 /fs/sysfs
parent96358de6bc2ab0bc5e8b44a8f3be4c9bf4a14e4f (diff)
downloadlinux-d68c9d6ae8f1fdae7d998158adc5ee106a2f8ce6.tar.xz
Break ELF_PLATFORM and stack pointer randomization dependency
Currently arch_align_stack() is used by fs/binfmt_elf.c to randomize stack pointer inside a page. But this happens only if ELF_PLATFORM symbol is defined. ELF_PLATFORM is normally set if the architecture wants ld.so to load implementation specific libraries for optimization. And currently a lot of architectures just yield this symbol to NULL. This is the case for MIPS architecture where ELF_PLATFORM is NULL but arch_align_stack() has been redefined to do stack inside page randomization. So in this case no randomization is actually done. This patch breaks this dependency which seems to be useless and allows platforms such MIPS to do the randomization. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/sysfs')
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