X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmmap.c;h=7b40abd7cba26aeb49595af3f2ec15099e11e5ee;hb=d73468533451fd896324058d9ba649c11ba3e3ee;hp=bdace87d7c019a75c0dbb26e29548bbd888869ed;hpb=68589bc353037f233fe510ad9ff432338c95db66;p=linux-2.6

diff --git a/mm/mmap.c b/mm/mmap.c
index bdace87d7c..7b40abd7cb 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1880,6 +1880,9 @@ unsigned long do_brk(unsigned long addr, unsigned long len)
 	if ((addr + len) > TASK_SIZE || (addr + len) < addr)
 		return -EINVAL;
 
+	if (is_hugepage_only_range(mm, addr, len))
+		return -EINVAL;
+
 	flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
 
 	error = arch_mmap_check(addr, len, flags);