Messages in this thread Patch in this message | | | From | Alexandre Ghiti <> | Subject | [PATCH] s390: mmap base does not depend on ADDR_NO_RANDOMIZE personality | Date | Thu, 4 Apr 2019 02:19:56 -0400 |
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randomize_stack_top() checks for current task flag PF_RANDOMIZE in order to use stack randomization and PF_RANDOMIZE is set when ADDR_NO_RANDOMIZE is unset, so no need to check for ADDR_NO_RANDOMIZE in stack_maxrandom_size.
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> --- arch/s390/mm/mmap.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 687f2a4d3459..5185ed0a0463 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -24,8 +24,7 @@ static unsigned long stack_maxrandom_size(void) { if (!(current->flags & PF_RANDOMIZE)) return 0; - if (current->personality & ADDR_NO_RANDOMIZE) - return 0; + return STACK_RND_MASK << PAGE_SHIFT; } -- 2.20.1
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