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@microsoft.com --- drivers/infiniband/core/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 84fc32a2c8b3..5e1be4949d5f 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -1253,5 +1253,5 @@ 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);