tree 6265175dff59f674ecd82e69536f4e9a0b89f4a4
parent 6cc2c8e535ec19153714cee62e11e4d9ac2ea953
author Jason Gunthorpe <jgg@mellanox.com> 1550031176 -0700
committer Jason Gunthorpe <jgg@mellanox.com> 1550634738 -0700

RDMA/rxe: Close a race after ib_register_device

Since rxe allows unregistration from other threads the rxe pointer can
become invalid any moment after ib_register_driver returns. This could
cause a user triggered use after free.

Add another driver callback to be called right after the device becomes
registered to complete any device setup required post-registration.  This
callback has enough core locking to prevent the device from becoming
unregistered.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>