Use @ses->ses_lock to protect access of @ses->ses_status.

Cc: stable@vger.kernel.org Signed-off-by: Paulo Alcantara (SUSE) pc@manguebit.com --- fs/cifs/smb2pdu.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 4245249dbba8..6a9661f3d324 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -175,8 +175,17 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon, } } spin_unlock(&tcon->tc_lock); - if ((!tcon->ses) || (tcon->ses->ses_status == SES_EXITING) || - (!tcon->ses->server) || !server) + + ses = tcon->ses; + if (!ses) + return -EIO; + spin_lock(&ses->ses_lock); + if (ses->ses_status == SES_EXITING) { + spin_unlock(&ses->ses_lock); + return -EIO; + } + spin_unlock(&ses->ses_lock); + if (!ses->server || !server) return -EIO;

spin_lock(&server->srv_lock); @@ -204,8 +213,6 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon, if (rc) return rc;

- ses = tcon->ses; - spin_lock(&ses->chan_lock); if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) { spin_unlock(&ses->chan_lock);