diff options
| author | Sage Weil <sage@inktank.com> | 2012-07-30 18:16:56 -0700 |
|---|---|---|
| committer | Xavier Boudet <x-boudet@ti.com> | 2012-11-27 09:36:01 +0100 |
| commit | ef8823244f6e78471673617c0cf5bb93fa0d3257 (patch) | |
| tree | d2de6019dd77fb3e6dd78ecbbf034933c612ef27 /net | |
| parent | 364a226819083473c49df93df516c2aa3a4a1460 (diff) | |
libceph: verify state after retaking con lock after dispatch
(cherry picked from commit 7b862e07b1a4d5c963d19027f10ea78085f27f9b)
We drop the con mutex when delivering a message. When we retake the
lock, we need to verify we are still in the OPEN state before
preparing to read the next tag, or else we risk stepping on a
connection that has been closed.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/messenger.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 8edc0c14f1c1..bb21e5b0fb55 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -2003,7 +2003,6 @@ static void process_message(struct ceph_connection *con) con->ops->dispatch(con, msg); mutex_lock(&con->mutex); - prepare_read_tag(con); } @@ -2213,6 +2212,8 @@ more: if (con->in_tag == CEPH_MSGR_TAG_READY) goto more; process_message(con); + if (con->state == CON_STATE_OPEN) + prepare_read_tag(con); goto more; } if (con->in_tag == CEPH_MSGR_TAG_ACK) { |