[CRIU] [PATCH] lazy-pages: fix off-by-one in remap_lazy_iovs

[Mike Rapoport]

When the remap 'from' parameter matches an IOV end we try to split that IOV
exactly at its end and effectively create an IOV with zero length.
With the off-by-one fix we will skip the IOV in such case as expected.

Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com>
---
 criu/uffd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/criu/uffd.c b/criu/uffd.c
index d631f4b..703dc43 100644
--- a/criu/uffd.c
+++ b/criu/uffd.c
@@ -481,7 +481,7 @@ static int remap_lazy_iovs(struct lazy_pages_info *lpi, unsigned long from,
 	list_for_each_entry_safe(iov, n, &lpi->iovs, l) {
 		unsigned long iov_end = iov->base + iov->len;
 
-		if (from > iov_end)
+		if (from >= iov_end)
 			continue;
 
 		if (len <= 0 || from + len < iov->base)
-- 
2.7.4