commit 30c4ae42317666f3aeed658cdb8803c84ac6fe77
author Michael Buesch <mb@bu3sch.de> Fri Nov 02 18:35:02 2007 +0100
committer Jeff Garzik <jeff@garzik.org> Sat Nov 10 04:25:12 2007 -0500
tree c1bc8e501b3fb2c41f53dda7dc2a28f6a3dbf81e
parent 80fda03fc8b5cd09c3e0e90725ef9bcb2a5c7b30

b43: debugfs SHM read buffer overrun fix

Fix possible buffer overrun.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/debugfs.c

diff --git a/drivers/net/wireless/b43/debugfs.c b/drivers/net/wireless/b43/debugfs.c
index 734e70e..ef0075d 100644
--- a/drivers/net/wireless/b43/debugfs.c
+++ b/drivers/net/wireless/b43/debugfs.c
@@ -128,7 +128,7 @@
 	__le16 *le16buf = (__le16 *)buf;
 
 	for (i = 0; i < 0x1000; i++) {
-		if (bufsize <= 0)
+		if (bufsize < sizeof(tmp))
 			break;
 		tmp = b43_shm_read16(dev, B43_SHM_SHARED, 2 * i);
 		le16buf[i] = cpu_to_le16(tmp);