X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fncpfs%2Fioctl.c;h=0a3f9b594602341350afb79f27ba2cd8191468e8;hb=2f1371614a5d49428846b90673a89036518dffad;hp=79b113048eacdc645fb67994cb0dcb25aad84dd0;hpb=86579aa470dee9c6038ac4adf0f8c4863a215865;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 79b113048eac..0a3f9b594602 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -525,6 +525,8 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg
 			switch (rqdata.cmd) {
 				case NCP_LOCK_EX:
 				case NCP_LOCK_SH:
+						if (rqdata.timeout < 0)
+							return -EINVAL;
 						if (rqdata.timeout == 0)
 							rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
 						else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)