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cifs: handle cases where multiple sessions share connection

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Based on our implementation of multichannel, it is entirely
possible that a server struct may not be found in any channel
of an SMB session.

In such cases, we should be prepared to move on and search for
the server struct in the next session.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2024-02-06 15:00:47 +00:00 committed by Steve French
parent c6e02eefd6
commit a39c757bf0
2 changed files with 6 additions and 1 deletions
fs/smb/client
connect.csess.c

6
fs/smb/client/connect.c

@ -233,6 +233,12 @@ cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server,
list_for_each_entry_safe(ses, nses, &pserver->smb_ses_list, smb_ses_list) {
/* check if iface is still active */
spin_lock(&ses->chan_lock);
if (cifs_ses_get_chan_index(ses, server) ==
CIFS_INVAL_CHAN_INDEX) {
spin_unlock(&ses->chan_lock);
continue;
}
if (!cifs_chan_is_iface_active(ses, server)) {
spin_unlock(&ses->chan_lock);
cifs_chan_update_iface(ses, server);

1
fs/smb/client/sess.c

@ -88,7 +88,6 @@ cifs_ses_get_chan_index(struct cifs_ses *ses,
if (server)
cifs_dbg(VFS, "unable to get chan index for server: 0x%llx",
server->conn_id);
WARN_ON(1);
return CIFS_INVAL_CHAN_INDEX;
}