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Add missing alignment check in arch/score sys_mmap()
author
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 11 Dec 2009 11:48:57 +0000
(06:48 -0500)
committer
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 11 Dec 2009 11:48:57 +0000
(06:48 -0500)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
arch/score/kernel/sys_score.c
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diff --git
a/arch/score/kernel/sys_score.c
b/arch/score/kernel/sys_score.c
index
3d6a67d
..
856ed68
100644
(file)
--- a/
arch/score/kernel/sys_score.c
+++ b/
arch/score/kernel/sys_score.c
@@
-41,10
+41,11
@@
sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
asmlinkage long
sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long fd, off_t
pgoff
)
+ unsigned long flags, unsigned long fd, off_t
offset
)
{
- /* where's the alignment check? */
- return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
+ if (unlikely(offset & ~PAGE_MASK))
+ return -EINVAL;
+ return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
}
asmlinkage long