[PATCH] fix process crash caused by randomisation and 64k pages

[powerpc.git] / fs / binfmt_elf.c

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 51db118..a2fceba 100644 (file)
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -507,7 +507,7 @@ out:
 #define INTERPRETER_ELF 2
 
 #ifndef STACK_RND_MASK
-#define STACK_RND_MASK 0x7ff           /* with 4K pages 8MB of VA */
+#define STACK_RND_MASK (0x7ff >> (PAGE_SHIFT - 12))    /* 8MB of VA */
 #endif
 
 static unsigned long randomize_stack_top(unsigned long stack_top)