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authorIlya Dryomov <idryomov@gmail.com>2019-02-05 20:30:27 +0100
committerIlya Dryomov <idryomov@gmail.com>2019-02-18 18:05:33 +0100
commit0fd3fd0a9bb0b02b6435bb7070e9f7b82a23f068 (patch)
tree07cd4e55be55374bfd563067e84d9c0dd1ecce58 /.gitignore
parenta3b22b9f11d9fbc48b0291ea92259a5a810e9438 (diff)
libceph: handle an empty authorize reply
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>
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