On Mon, Feb 25, 2019 at 09:12:06PM +0100, Ilya Dryomov wrote:
The authorize reply can be empty, for example when the ticket used to build the authorizer is too old and TAG_BADAUTHORIZER is returned from the service. Calling ->verify_authorizer_reply() results in an attempt to decrypt and validate (somewhat) random data in au->buf (most likely the signature block from calc_signature()), which fails and ends up in con_fault_finish() with !con->auth_retry. The ticket isn't invalidated and the connection is retried again and again until a new ticket is obtained from the monitor:
libceph: osd2 192.168.122.1:6809 bad authorize reply libceph: osd2 192.168.122.1:6809 bad authorize reply libceph: osd2 192.168.122.1:6809 bad authorize reply libceph: osd2 192.168.122.1:6809 bad authorize reply
Let TAG_BADAUTHORIZER handler kick in and increment con->auth_retry.
Cc: stable@vger.kernel.org Fixes: 5c056fdc5b47 ("libceph: verify authorize reply on connect") Link: https://tracker.ceph.com/issues/20164 Signed-off-by: Ilya Dryomov idryomov@gmail.com Reviewed-by: Sage Weil sage@redhat.com [idryomov@gmail.com: backport to 4.4: extra arg, no CEPHX_V2]
net/ceph/messenger.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)
What is the git commit id of this patch in Linus's tree?
thanks,
greg k-h