diff mbox series

[net] net: sock: fix in-kernel mark setting

Message ID 20210531210030.1462995-1-aahringo@redhat.com (mailing list archive)
State Accepted
Commit dd9082f4a9f94280fbbece641bf8fc0a25f71f7a
Delegated to: Netdev Maintainers
Headers show
Series [net] net: sock: fix in-kernel mark setting | expand

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Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net
netdev/subject_prefix success Link
netdev/cc_maintainers fail 1 blamed authors not CCed: teigland@redhat.com; 7 maintainers not CCed: linmiaohe@huawei.com xiangxia.m.yue@gmail.com teigland@redhat.com keescook@chromium.org bjorn@kernel.org pabeni@redhat.com edumazet@google.com
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 5 this patch: 5
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 32 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 5 this patch: 5
netdev/header_inline success Link

Commit Message

Alexander Aring May 31, 2021, 9 p.m. UTC
This patch fixes the in-kernel mark setting by doing an additional
sk_dst_reset() which was introduced by commit 50254256f382 ("sock: Reset
dst when changing sk_mark via setsockopt"). The code is now shared to
avoid any further suprises when changing the socket mark value.

Fixes: 84d1c617402e ("net: sock: add sock_set_mark")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
 net/core/sock.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org June 1, 2021, 10:30 p.m. UTC | #1
Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Mon, 31 May 2021 17:00:30 -0400 you wrote:
> This patch fixes the in-kernel mark setting by doing an additional
> sk_dst_reset() which was introduced by commit 50254256f382 ("sock: Reset
> dst when changing sk_mark via setsockopt"). The code is now shared to
> avoid any further suprises when changing the socket mark value.
> 
> Fixes: 84d1c617402e ("net: sock: add sock_set_mark")
> Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Signed-off-by: Alexander Aring <aahringo@redhat.com>
> 
> [...]

Here is the summary with links:
  - [net] net: sock: fix in-kernel mark setting
    https://git.kernel.org/netdev/net/c/dd9082f4a9f9

You are awesome, thank you!
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diff mbox series

Patch

diff --git a/net/core/sock.c b/net/core/sock.c
index 958614ea16ed..946888afef88 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -815,10 +815,18 @@  void sock_set_rcvbuf(struct sock *sk, int val)
 }
 EXPORT_SYMBOL(sock_set_rcvbuf);
 
+static void __sock_set_mark(struct sock *sk, u32 val)
+{
+	if (val != sk->sk_mark) {
+		sk->sk_mark = val;
+		sk_dst_reset(sk);
+	}
+}
+
 void sock_set_mark(struct sock *sk, u32 val)
 {
 	lock_sock(sk);
-	sk->sk_mark = val;
+	__sock_set_mark(sk, val);
 	release_sock(sk);
 }
 EXPORT_SYMBOL(sock_set_mark);
@@ -1126,10 +1134,10 @@  int sock_setsockopt(struct socket *sock, int level, int optname,
 	case SO_MARK:
 		if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) {
 			ret = -EPERM;
-		} else if (val != sk->sk_mark) {
-			sk->sk_mark = val;
-			sk_dst_reset(sk);
+			break;
 		}
+
+		__sock_set_mark(sk, val);
 		break;
 
 	case SO_RXQ_OVFL: