4.14-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Monakhov dmonakhov@openvz.org
[ Upstream commit a9cd1a673737dd81332fce1145801bfacfb90d90 ]
Once infiniband is compiled as a core component its subsystem must be enabled before device initialization. Otherwise there is a NULL pointer dereference during mlx4_core init, calltrace: ->device_add if (dev->class) { deref dev->class->p =>NULLPTR
#Config CONFIG_NET_DEVLINK=y CONFIG_MAY_USE_DEVLINK=y CONFIG_MLX4_EN=y
Signed-off-by: Dmitry Monakhov dmonakhov@openvz.org Reviewed-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/core/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -1261,5 +1261,5 @@ static void __exit ib_core_cleanup(void)
MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4);
-module_init(ib_core_init); +subsys_initcall(ib_core_init); module_exit(ib_core_cleanup);