linux

Parvi Kaustubhi c0ce3a4076 IB/usnic: Fix potential deadlock [ Upstream commit `8036e90f92` ] Acquiring the rtnl lock while holding usdev_lock could result in a deadlock. For example: usnic_ib_query_port() \| mutex_lock(&us_ibdev->usdev_lock) \| ib_get_eth_speed() \| rtnl_lock() rtnl_lock() \| usnic_ib_netdevice_event() \| mutex_lock(&us_ibdev->usdev_lock) This commit moves the usdev_lock acquisition after the rtnl lock has been released. This is safe to do because usdev_lock is not protecting anything being accessed in ib_get_eth_speed(). Hence, the correct order of holding locks (rtnl -> usdev_lock) is not violated. Signed-off-by: Parvi Kaustubhi <pkaustub@cisco.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2019-01-26 09:20:49 +01:00
..
core	RDMA/nldev: Don't expose unsafe global rkey to regular user	2019-01-22 21:09:53 +01:00
hw	IB/usnic: Fix potential deadlock	2019-01-26 09:20:49 +01:00
sw	rxe: IB_WR_REG_MR does not capture MR's iova field	2019-01-26 09:20:43 +01:00
ulp	RDMA/srpt: Fix a use-after-free in the channel release code	2019-01-13 09:24:08 +01:00
Kconfig	RDMA: Fix building with CONFIG_MMU=n	2018-10-03 16:01:03 -06:00
Makefile	IB/rdmavt: Create module framework and handle driver registration	2016-03-10 20:37:04 -05:00