diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 1e7636b..beeebf1 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -372,6 +372,10 @@
 
 		ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
 				GFP_KERNEL);
+		if (!ppace) {
+			cERROR(1, "DACL memory allocation error");
+			return;
+		}
 
 		for (i = 0; i < num_aces; ++i) {
 			ppace[i] = (struct cifs_ace *) (acl_base + acl_size);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 46c66ed..904aa47 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -136,9 +136,6 @@
 		}
 	}
 
-	if (ses->status == CifsExiting)
-		return -EIO;
-
 	/*
 	 * Give demultiplex thread up to 10 seconds to reconnect, should be
 	 * greater than cifs socket timeout which is 7 seconds
@@ -156,7 +153,7 @@
 		 * retrying until process is killed or server comes
 		 * back on-line
 		 */
-		if (!tcon->retry || ses->status == CifsExiting) {
+		if (!tcon->retry) {
 			cFYI(1, "gave up waiting on reconnect in smb_init");
 			return -EHOSTDOWN;
 		}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 47d8ff6..257b6d8 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -337,8 +337,12 @@
 	struct TCP_Server_Info *server = container_of(work,
 					struct TCP_Server_Info, echo.work);
 
-	/* no need to ping if we got a response recently */
-	if (time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
+	/*
+	 * We cannot send an echo until the NEGOTIATE_PROTOCOL request is done.
+	 * Also, no need to ping if we got a response recently
+	 */
+	if (server->tcpStatus != CifsGood ||
+	    time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
 		goto requeue_echo;
 
 	rc = CIFSSMBEcho(server);
@@ -578,12 +582,12 @@
 		else if (reconnect == 1)
 			continue;
 
-		length += 4; /* account for rfc1002 hdr */
+		total_read += 4; /* account for rfc1002 hdr */
 
-
-		dump_smb(smb_buffer, length);
-		if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) {
-			cifs_dump_mem("Bad SMB: ", smb_buffer, 48);
+		dump_smb(smb_buffer, total_read);
+		if (checkSMB(smb_buffer, smb_buffer->Mid, total_read)) {
+			cifs_dump_mem("Bad SMB: ", smb_buffer,
+					total_read < 48 ? total_read : 48);
 			continue;
 		}
 
@@ -633,11 +637,11 @@
 				mid_entry->largeBuf = isLargeBuf;
 multi_t2_fnd:
 				mid_entry->midState = MID_RESPONSE_RECEIVED;
-				list_del_init(&mid_entry->qhead);
-				mid_entry->callback(mid_entry);
 #ifdef CONFIG_CIFS_STATS2
 				mid_entry->when_received = jiffies;
 #endif
+				list_del_init(&mid_entry->qhead);
+				mid_entry->callback(mid_entry);
 				break;
 			}
 			mid_entry = NULL;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 74c0a28..e964b1c 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1662,10 +1662,10 @@
 cifs_iovec_write(struct file *file, const struct iovec *iov,
 		 unsigned long nr_segs, loff_t *poffset)
 {
-	size_t total_written = 0;
-	unsigned int written = 0;
-	unsigned long num_pages, npages;
-	size_t copied, len, cur_len, i;
+	unsigned int written;
+	unsigned long num_pages, npages, i;
+	size_t copied, len, cur_len;
+	ssize_t total_written = 0;
 	struct kvec *to_send;
 	struct page **pages;
 	struct iov_iter it;
@@ -1821,7 +1821,8 @@
 {
 	int rc;
 	int xid;
-	unsigned int total_read, bytes_read = 0;
+	ssize_t total_read;
+	unsigned int bytes_read = 0;
 	size_t len, cur_len;
 	int iov_offset = 0;
 	struct cifs_sb_info *cifs_sb;
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index b8c5e2e..fbc5aac 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -359,6 +359,10 @@
 	if (rc)
 		return rc;
 
+	/* enable signing if server requires it */
+	if (server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+		in_buf->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+
 	mutex_lock(&server->srv_mutex);
 	mid = AllocMidQEntry(in_buf, server);
 	if (mid == NULL) {