tree 425a3a94af73ed41c7eb28a0ad50d411bc545663
parent e1444b5a163e81138754cab27c4fa1637b5a2239
author Michael S. Tsirkin <mst@mellanox.co.il> 1164843190 -0800
committer Roland Dreier <rolandd@cisco.com> 1164843190 -0800

IB/ucm: Fix deadlock in cleanup

ib_ucm_cleanup_events() holds file_mutex while calling ib_destroy_cm_id().
This can deadlock since ib_destroy_cm_id() flushes event handlers, and
ib_ucm_event_handler() needs file_mutex, too.  Therefore, drop the
file_mutex during the call to ib_destroy_cm_id().

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>