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authorShyam Prasad N <sprasad@microsoft.com>2023-02-10 17:41:17 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-04-06 12:10:33 +0200
commitf60cdd319b2c35df32934802ce2bfb6810cac048 (patch)
tree0ff2e5496d921c018ba3b8e63600c19a09db99bf /fs
parenteddee1c229c21ad1686547d50ebd0c835a20cd30 (diff)
downloadlinux-f60cdd319b2c35df32934802ce2bfb6810cac048.tar.gz
cifs: update ip_addr for ses only for primary chan setup
[ Upstream commit e77978de4765229e09c8fabcf4f8419ff367317f ]

We update ses->ip_addr whenever we do a session setup.
But this should happen only for primary channel in mchan
scenario.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: bc962159e8e3 ("cifs: avoid race conditions with parallel reconnects")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/connect.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 7aecb1646b6f..43637c128374 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -4082,16 +4082,12 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 		   struct nls_table *nls_info)
 {
 	int rc = -ENOSYS;
-	struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
-	struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
+	struct TCP_Server_Info *pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server;
+	struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&pserver->dstaddr;
+	struct sockaddr_in *addr = (struct sockaddr_in *)&pserver->dstaddr;
 	bool is_binding = false;
 
 	spin_lock(&ses->ses_lock);
-	if (server->dstaddr.ss_family == AF_INET6)
-		scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI6", &addr6->sin6_addr);
-	else
-		scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI4", &addr->sin_addr);
-
 	if (ses->ses_status != SES_GOOD &&
 	    ses->ses_status != SES_NEW &&
 	    ses->ses_status != SES_NEED_RECON) {
@@ -4115,6 +4111,14 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 		ses->ses_status = SES_IN_SETUP;
 	spin_unlock(&ses->ses_lock);
 
+	/* update ses ip_addr only for primary chan */
+	if (server == pserver) {
+		if (server->dstaddr.ss_family == AF_INET6)
+			scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI6", &addr6->sin6_addr);
+		else
+			scnprintf(ses->ip_addr, sizeof(ses->ip_addr), "%pI4", &addr->sin_addr);
+	}
+
 	if (!is_binding) {
 		ses->capabilities = server->capabilities;
 		if (!linuxExtEnabled)