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libceph: return the handler error from mon_handle_auth_done()

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commit e84b48d31b5008932c0a0902982809fbaa1d3b70 upstream.

Currently any error from ceph_auth_handle_reply_done() is propagated
via finish_auth() but isn't returned from mon_handle_auth_done().  This
results in higher layers learning that (despite the monitor considering
us to be successfully authenticated) something went wrong in the
authentication phase and reacting accordingly, but msgr2 still trying
to proceed with establishing the session in the background.  In the
case of secure mode this can trigger a WARN in setup_crypto() and later
lead to a NULL pointer dereference inside of prepare_auth_signature().

Cc: stable@vger.kernel.org
Fixes: cd1a677cad ("libceph, ceph: implement msgr2.1 protocol (crc and secure modes)")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilya Dryomov 2025-12-29 15:14:48 +01:00 committed by Greg Kroah-Hartman
parent 851241d3f7
commit 77229551f2
1 changed files with 1 additions and 1 deletions
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2
net/ceph/mon_client.c
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@ -1418,7 +1418,7 @@ static int mon_handle_auth_done(struct ceph_connection *con,
if (!ret)
finish_hunting(monc);
mutex_unlock(&monc->mutex);
return 0;
return ret;
}
static int mon_handle_auth_bad_method(struct ceph_connection *con,