x86/kaslr: Avoid the setup_data area when picking location
authorKees Cook <keescook@chromium.org>
Thu, 11 Sep 2014 16:19:31 +0000 (09:19 -0700)
committerIngo Molnar <mingo@kernel.org>
Fri, 19 Sep 2014 11:04:29 +0000 (13:04 +0200)
commit0cacbfbeb5077b63d5d3cf6df88b14ac12ad584b
tree9bb11c6c1601404990f7ed17b3573c4d155b38f3
parent43657ffb79eba5234333d8657457774c0d3bff46
x86/kaslr: Avoid the setup_data area when picking location

The KASLR location-choosing logic needs to avoid the setup_data
list memory areas as well. Without this, it would be possible to
have the ASLR position stomp on the memory, ultimately causing
the boot to fail.

Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Baoquan He <bhe@redhat.com>
Cc: stable@vger.kernel.org
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140911161931.GA12001@www.outflux.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/boot/compressed/aslr.c