4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);