tree 3f9c6caa641e8fae147d1db12f300afdf9cd2411
parent 97ebcf056f15c285e09307fbf50c9f99bdeafb3c
author Jason Gunthorpe <jgg@nvidia.com> 1597752321 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1603961716 +0100

RDMA/ucma: Fix locking for ctx->events_reported

[ Upstream commit 98837c6c3d7285f6eca86480b6f7fac6880e27a8 ]

This value is locked under the file->mut, ensure it is held whenever
touching it.

The case in ucma_migrate_id() is a race, while in ucma_free_uctx() it is
already not possible for the write side to run, the movement is just for
clarity.

Fixes: 88314e4dda1e ("RDMA/cma: add support for rdma_migrate_id()")
Link: https://lore.kernel.org/r/20200818120526.702120-10-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>