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| author |   Alexandre Ghiti <alex@ghiti.fr> | 2019-04-04 02:19:56 -0400 |
|---|---|---|
| committer |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-06-04 15:03:53 +0200 |
| commit | 567b722347239484d0b9ab0b42aeb24c1fe6b4e4 (patch) | |
| tree | 5960ce4b35d0c04a81d1f80759913d4beaf5845b | |
| parent | s390/Kconfig: pedantic cleanups (diff) | |
| download | linux-dev-567b722347239484d0b9ab0b42aeb24c1fe6b4e4.tar.xz linux-dev-567b722347239484d0b9ab0b42aeb24c1fe6b4e4.zip | |
s390/mm: mmap base does not depend on ADDR_NO_RANDOMIZE personality
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.
[heiko.carstens@de.ibm.com]: See also commit 01578e36163c ("x86/elf:
Remove the unnecessary ADDR_NO_RANDOMIZE checks")
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| -rw-r--r-- | arch/s390/mm/mmap.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 687f2a4d3459..cbc718ba6d78 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -24,8 +24,6 @@ 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; } |