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| author | Alexandre Ghiti <alex@ghiti.fr> | 2019-04-04 02:26:22 -0400 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2019-05-03 23:47:38 +0200 |
| commit | 17d9822d4b4c1bfeb14971d9a2639698e7f5b1eb (patch) | |
| tree | e7317d1feba8497929bb36676d3e435527033748 /arch | |
| parent | 37624b58542fb9f2d9a70e6ea006ef8a5f66c30b (diff) | |
| download | linux-17d9822d4b4c1bfeb14971d9a2639698e7f5b1eb.tar.gz linux-17d9822d4b4c1bfeb14971d9a2639698e7f5b1eb.tar.bz2 linux-17d9822d4b4c1bfeb14971d9a2639698e7f5b1eb.zip | |
parisc: Consider stack randomization for mmap base only when necessary
Do not offset mmap base address because of stack randomization if
current task does not want randomization.
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 376ea0d1b275..4407ac4c1d84 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -86,7 +86,8 @@ static unsigned long mmap_upper_limit(struct rlimit *rlim_stack) stack_base = STACK_SIZE_MAX; /* Add space for stack randomization. */ - stack_base += (STACK_RND_MASK << PAGE_SHIFT); + if (current->flags & PF_RANDOMIZE) + stack_base += (STACK_RND_MASK << PAGE_SHIFT); return PAGE_ALIGN(STACK_TOP - stack_base); } |