* [PATCH net] net: core: devlink: use right genl user_ptr when handling port param get/set
@ 2021-01-18 17:32 Vadym Kochan
0 siblings, 0 replies; only message in thread
From: Vadym Kochan @ 2021-01-18 17:32 UTC (permalink / raw)
To: Jiri Pirko, David S. Miller, Jakub Kicinski, netdev
Cc: Oleksandr Mazur, Vadym Kochan
From: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Fix incorrect user_ptr dereferencing when handling port param get/set:
idx [0] stores the 'struct devlink' pointer;
idx [1] stores the 'struct devlink_port' pointer;
Fixes: f4601dee25d5 ("devlink: Add port param get command")
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: Vadym Kochan <vadym.kochan@plvision.com>
---
net/core/devlink.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/core/devlink.c b/net/core/devlink.c
index ee828e4b1007..738d4344d679 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -4146,7 +4146,7 @@ static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
struct devlink_param_item *param_item;
struct sk_buff *msg;
int err;
@@ -4175,7 +4175,7 @@ static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
devlink_port->index,
--
2.17.1
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