diff mbox series

[1/2,net] devlink: Fix some error codes

Message ID 20201026080059.GA1628785@mwanda (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series [1/2,net] devlink: Fix some error codes | expand

Commit Message

Dan Carpenter Oct. 26, 2020, 8 a.m. UTC 
These paths don't set the error codes.  It's especially important in
devlink_nl_region_notify_build() where it leads to a NULL dereference in
the caller.

Fixes: 544e7c33ec2f ("net: devlink: Add support for port regions")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 net/core/devlink.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

Comments

Jakub Kicinski Oct. 28, 2020, 12:12 a.m. UTC | #1 
On Mon, 26 Oct 2020 11:00:59 +0300 Dan Carpenter wrote:
> devlink_nl_region_notify_build() where it leads to a NULL dereference in
> the caller.
> 
> Fixes: 544e7c33ec2f ("net: devlink: Add support for port regions")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Applied both, thanks Dan!
diff mbox series

Patch

diff --git a/net/core/devlink.c b/net/core/devlink.c
index a578634052a3..925da7c0fcf3 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -4213,10 +4213,12 @@  static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink,
 	if (err)
 		goto nla_put_failure;
 
-	if (region->port)
-		if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
-				region->port->index))
+	if (region->port) {
+		err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+				  region->port->index);
+		if (err)
 			goto nla_put_failure;
+	}
 
 	err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
 	if (err)
@@ -4265,10 +4267,12 @@  devlink_nl_region_notify_build(struct devlink_region *region,
 	if (err)
 		goto out_cancel_msg;
 
-	if (region->port)
-		if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
-				region->port->index))
+	if (region->port) {
+		err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+				  region->port->index);
+		if (err)
 			goto out_cancel_msg;
+	}
 
 	err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
 			     region->ops->name);
@@ -4962,10 +4966,12 @@  static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
 	if (err)
 		goto nla_put_failure;
 
-	if (region->port)
-		if (nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
-				region->port->index))
+	if (region->port) {
+		err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
+				  region->port->index);
+		if (err)
 			goto nla_put_failure;
+	}
 
 	err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
 	if (err)