diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2023-06-22 21:24:30 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-24 14:12:58 -0700 |
| commit | 8b35ca3e45e35a26a21427f35d4093606e93ad0a (patch) | |
| tree | a5e755ba10e7ebfc8770ae4f247aaad5cf831e58 /mm/mmap.c | |
| parent | 7267ef7b0b77f4ed23b7b3c87d8eca7bd9c2d007 (diff) | |
arm/mm: Convert to using lock_mm_and_find_vma()
arm has an additional check for address < FIRST_USER_ADDRESS before
expanding the stack. Since FIRST_USER_ADDRESS is defined everywhere
(generally as 0), move that check to the generic expand_downwards().
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index d600404580b2..6d120bf1d0bc 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2036,7 +2036,7 @@ int expand_downwards(struct vm_area_struct *vma, unsigned long address) int error = 0; address &= PAGE_MASK; - if (address < mmap_min_addr) + if (address < mmap_min_addr || address < FIRST_USER_ADDRESS) return -EPERM; /* Enforce stack_guard_gap */ |