6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 7052622fccb1efb850c6b55de477f65d03525a30 upstream.
The cgroup_get_from_path() function never returns NULL, it returns error
pointers. Update the error handling to match.
Fixes: 7f3287db6543 ("netfilter: nft_socket: make cgroupsv2 matching work with namespaces")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Florian Westphal <fw@xxxxxxxxx>
Acked-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Link: https://patch.msgid.link/bbc0c4e0-05cc-4f44-8797-2f4b3920a820@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netfilter/nft_socket.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/netfilter/nft_socket.c
+++ b/net/netfilter/nft_socket.c
@@ -61,8 +61,8 @@ static noinline int nft_socket_cgroup_su
struct cgroup *cgrp = cgroup_get_from_path("/");
int level;
- if (!cgrp)
- return -ENOENT;
+ if (IS_ERR(cgrp))
+ return PTR_ERR(cgrp);
level = cgrp->level;
