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| author |   Radu Caragea <sinaelgl@gmail.com> | 2013-08-13 16:00:59 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-08-13 17:57:49 -0700 |
| commit | df54d6fa54275ce59660453e29d1228c2b45a826 (patch) | |
| tree | 8e8c54da4a1cd7f9caca46b2b39d673c3bf7f793 /include | |
| parent | ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page (diff) | |
| download | linux-dev-df54d6fa54275ce59660453e29d1228c2b45a826.tar.xz linux-dev-df54d6fa54275ce59660453e29d1228c2b45a826.zip | |
x86 get_unmapped_area(): use proper mmap base for bottom-up direction
When the stack is set to unlimited, the bottomup direction is used for
mmap-ings but the mmap_base is not used and thus effectively renders
ASLR for mmapings along with PIE useless.
Cc: Michel Lespinasse <walken@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Sendroiu <molecula2788@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index d722490da030..923dd6ea4a0e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -314,6 +314,7 @@ struct nsproxy; struct user_namespace; #ifdef CONFIG_MMU +extern unsigned long mmap_legacy_base(void); extern void arch_pick_mmap_layout(struct mm_struct *mm); extern unsigned long arch_get_unmapped_area(struct file *, unsigned long, unsigned long, |