Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: free socket in error exit path
  dlm: fix plock use-after-free
  dlm: Fix uninitialised variable warning in lock.c

3 files changed, 14 insertions, 9 deletions

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 205ec95..eb507c4 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -435,7 +435,7 @@ static int search_rsb(struct dlm_ls *ls, char *name, int len, int b,
 static int find_rsb(struct dlm_ls *ls, char *name, int namelen,
 		    unsigned int flags, struct dlm_rsb **r_ret)
 {
-	struct dlm_rsb *r, *tmp;
+	struct dlm_rsb *r = NULL, *tmp;
 	uint32_t hash, bucket;
 	int error = -EINVAL;
 
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index cdb580a..618a60f 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -902,7 +902,7 @@ static void tcp_connect_to_sock(struct connection *con)
 	int result = -EHOSTUNREACH;
 	struct sockaddr_storage saddr, src_addr;
 	int addr_len;
-	struct socket *sock;
+	struct socket *sock = NULL;
 
 	if (con->nodeid == 0) {
 		log_print("attempt to connect sock 0 foiled");
@@ -962,6 +962,8 @@ out_err:
 	if (con->sock) {
 		sock_release(con->sock);
 		con->sock = NULL;
+	} else if (sock) {
+		sock_release(sock);
 	}
 	/*
 	 * Some errors are fatal and this list might need adjusting. For other
diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c
index 894a32d..16f682e 100644
--- a/fs/dlm/plock.c
+++ b/fs/dlm/plock.c
@@ -353,7 +353,7 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count,
 {
 	struct dlm_plock_info info;
 	struct plock_op *op;
-	int found = 0;
+	int found = 0, do_callback = 0;
 
 	if (count != sizeof(info))
 		return -EINVAL;
@@ -366,21 +366,24 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count,
 
 	spin_lock(&ops_lock);
 	list_for_each_entry(op, &recv_list, list) {
-		if (op->info.fsid == info.fsid && op->info.number == info.number &&
+		if (op->info.fsid == info.fsid &&
+		    op->info.number == info.number &&
 		    op->info.owner == info.owner) {
+			struct plock_xop *xop = (struct plock_xop *)op;
 			list_del_init(&op->list);
-			found = 1;
-			op->done = 1;
 			memcpy(&op->info, &info, sizeof(info));
+			if (xop->callback)
+				do_callback = 1;
+			else
+				op->done = 1;
+			found = 1;
 			break;
 		}
 	}
 	spin_unlock(&ops_lock);
 
 	if (found) {
-		struct plock_xop *xop;
-		xop = (struct plock_xop *)op;
-		if (xop->callback)
+		if (do_callback)
 			dlm_plock_callback(op);
 		else
 			wake_up(&recv_wq);