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authorJiri Kosina <jkosina@suse.cz>2011-11-03 00:37:41 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-03 03:06:58 +0400
commita3defbe5c337dbc6da911f8cc49ae3cc3b49b453 (patch)
tree0971645887ef2848ad4f7bc86d2204aacb748de9 /fs/ramfs
parentb35a35b556f5e6b7993ad0baf20173e75c09ce8c (diff)
downloadlinux-a3defbe5c337dbc6da911f8cc49ae3cc3b49b453.tar.xz
binfmt_elf: fix PIE execution with randomization disabled
The case of address space randomization being disabled in runtime through randomize_va_space sysctl is not treated properly in load_elf_binary(), resulting in SIGKILL coming at exec() time for certain PIE-linked binaries in case the randomization has been disabled at runtime prior to calling exec(). Handle the randomize_va_space == 0 case the same way as if we were not supporting .text randomization at all. Based on original patch by H.J. Lu and Josh Boyer. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Ingo Molnar <mingo@elte.hu> Cc: Russell King <rmk@arm.linux.org.uk> Cc: H.J. Lu <hongjiu.lu@intel.com> Cc: <stable@kernel.org> Tested-by: Josh Boyer <jwboyer@redhat.com> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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