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cifs: fail i/o on soft mounts if sessionsetup errors out 

RHBZ: 1579050

If we have a soft mount we should fail commands for session-setup
failures (such as the password having changed/ account being deleted/ ...)
and return an error back to the application.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
This commit is contained in:
Ronnie Sahlberg 2020-02-05 11:08:01 +10:00 committed by Steve French
parent 87f93d82e0
commit b0dd940e58
1 changed files with 8 additions and 2 deletions
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10
fs/cifs/smb2pdu.c
View File

@ -350,9 +350,14 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
}
rc = cifs_negotiate_protocol(0, tcon->ses);
if (!rc && tcon->ses->need_reconnect)
if (!rc && tcon->ses->need_reconnect) {
rc = cifs_setup_session(0, tcon->ses, nls_codepage);
if ((rc == -EACCES) && !tcon->retry) {
rc = -EHOSTDOWN;
mutex_unlock(&tcon->ses->session_mutex);
goto failed;
}
}
if (rc || !tcon->need_reconnect) {
mutex_unlock(&tcon->ses->session_mutex);
goto out;
@ -397,6 +402,7 @@ out:
case SMB2_SET_INFO:
rc = -EAGAIN;
}
failed:
unload_nls(nls_codepage);
return rc;
}