commit 4a45b7d4ece0e6dc425e9f66fa8b501b72d846db
author Bryan O'Sullivan <bos@pathscale.com> Sat Jul 01 04:35:55 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Sat Jul 01 09:55:59 2006 -0700
tree 6e858b3343ffb3670eb6f5a838479d52791e0a30
parent 6665ddee85bfc336d691ea5132a2c20a1d0e8053

[PATCH] IB/ipath: don't allow resources to be created with illegal values

Signed-off-by: Robert Walsh <robert.walsh@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/infiniband/hw/ipath/ipath_mr.c

diff --git a/drivers/infiniband/hw/ipath/ipath_mr.c b/drivers/infiniband/hw/ipath/ipath_mr.c
index 3093676..4ac31a5 100644
--- a/drivers/infiniband/hw/ipath/ipath_mr.c
+++ b/drivers/infiniband/hw/ipath/ipath_mr.c
@@ -170,6 +170,11 @@
 	int n, m, i;
 	struct ib_mr *ret;
 
+	if (region->length == 0) {
+		ret = ERR_PTR(-EINVAL);
+		goto bail;
+	}
+
 	n = 0;
 	list_for_each_entry(chunk, &region->chunk_list, list)
 		n += chunk->nents;