This is a note to let you know that I've just added the patch titled
IB/core: Init subsys if compiled to vmlinuz-core
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-core-init-subsys-if-compiled-to-vmlinuz-core.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Feb 23 11:45:09 CET 2018
From: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
Date: Mon, 27 Nov 2017 13:39:05 +0000
Subject: IB/core: Init subsys if compiled to vmlinuz-core
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);
Patches currently in stable-queue which might be from dmonakhov@xxxxxxxxxx are
queue-4.14/ib-core-init-subsys-if-compiled-to-vmlinuz-core.patch