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cifs: fix channel signing 

The server var was accidentally used as an iterator over the global
list of connections, thus overwritten the passed argument. This
resulted in the wrong signing key being returned for extra channels.

Fix this by using a separate var to iterate.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Aurelien Aptel 2020-02-06 13:49:26 +01:00 committed by Steve French
parent d26c2ddd33
commit cc95b67727
1 changed files with 3 additions and 2 deletions
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5
fs/cifs/smb2transport.c
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@ -104,13 +104,14 @@ int smb2_get_sign_key(__u64 ses_id, struct TCP_Server_Info *server, u8 *key)
{
struct cifs_chan *chan;
struct cifs_ses *ses = NULL;
struct TCP_Server_Info *it = NULL;
int i;
int rc = 0;
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
list_for_each_entry(it, &cifs_tcp_ses_list, tcp_ses_list) {
list_for_each_entry(ses, &it->smb_ses_list, smb_ses_list) {
if (ses->Suid == ses_id)
goto found;
}