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authorAnshuman Khandual <khandual@linux.vnet.ibm.com>2017-05-04 00:55:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 01:52:10 +0300
commit20ac28933c49433e0f064314de3618129b54a22e (patch)
tree49070dd9b127b033695f76d0d1231e09800610fb /mm/mmap.c
parentd75da004c708c9fca7b53f7da293a295522414d9 (diff)
downloadlinux-20ac28933c49433e0f064314de3618129b54a22e.tar.xz
mm/mmap: replace SHM_HUGE_MASK with MAP_HUGE_MASK inside mmap_pgoff
Commit 091d0d55b286 ("shm: fix null pointer deref when userspace specifies invalid hugepage size") had replaced MAP_HUGE_MASK with SHM_HUGE_MASK. Though both of them contain the same numeric value of 0x3f, MAP_HUGE_MASK flag sounds more appropriate than the other one in the context. Hence change it back. Link: http://lkml.kernel.org/r/20170404045635.616-1-khandual@linux.vnet.ibm.com Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index bfbe8856d134..f82741e199c0 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1479,7 +1479,7 @@ SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len,
struct user_struct *user = NULL;
struct hstate *hs;
- hs = hstate_sizelog((flags >> MAP_HUGE_SHIFT) & SHM_HUGE_MASK);
+ hs = hstate_sizelog((flags >> MAP_HUGE_SHIFT) & MAP_HUGE_MASK);
if (!hs)
return -EINVAL;