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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2015-03-13 11:19:09 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-03-13 12:15:45 +0100
commite143fa93c28669a7f0851e6850b1da5b1945fd53 (patch)
tree3666450af8b0e344439215271ad981767ae69040 /arch/s390/include/asm/elf.h
parent20e76ee184a7cea155268377c4e414eea1dab6fd (diff)
downloadlinux-linaro-stable-e143fa93c28669a7f0851e6850b1da5b1945fd53.tar.gz
s390/mm: limit STACK_RND_MASK for compat tasks
For compat tasks the mmap randomization does not use the maximum randomization value from mmap_rnd_mask but the fixed value of 0x7ff. This needs to be respected in the definition of STACK_RND_MASK as well. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/elf.h')
-rw-r--r--arch/s390/include/asm/elf.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index c9df40b5c0ac..c9c875d9ed31 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -211,7 +211,7 @@ do { \
extern unsigned long mmap_rnd_mask;
-#define STACK_RND_MASK (mmap_rnd_mask)
+#define STACK_RND_MASK (test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
#define ARCH_DLINFO \
do { \