netdev - [bpf PATCH v2 3/3] bpf: test_maps, only support ESTABLISHED socks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180917175928.3870.4113.stgit@john-Precision-Tower-5810>
Date:   Mon, 17 Sep 2018 10:59:28 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     edumazet@...gle.com, ast@...nel.org, daniel@...earbox.net
Cc:     netdev@...r.kernel.org
Subject: [bpf PATCH v2 3/3] bpf: test_maps, only support ESTABLISHED socks

Ensure that sockets added to a sock{map|hash} that is not in the
ESTABLISHED state is rejected.

Fixes: 1aa12bdf1bfb ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: John Fastabend <john.fastabend@...il.com>
---
 tools/testing/selftests/bpf/test_maps.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 6f54f84..0f2090f 100644
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -580,7 +580,11 @@ static void test_sockmap(int tasks, void *data)
 	/* Test update without programs */
 	for (i = 0; i < 6; i++) {
 		err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
-		if (err) {
+		if (i < 2 && !err) {
+			printf("Allowed update sockmap '%i:%i' not in ESTABLISHED\n",
+			       i, sfd[i]);
+			goto out_sockmap;
+		} else if (i > 1 && err) {
 			printf("Failed noprog update sockmap '%i:%i'\n",
 			       i, sfd[i]);
 			goto out_sockmap;
@@ -741,7 +745,7 @@ static void test_sockmap(int tasks, void *data)
 	}
 
 	/* Test map update elem afterwards fd lives in fd and map_fd */
-	for (i = 0; i < 6; i++) {
+	for (i = 2; i < 6; i++) {
 		err = bpf_map_update_elem(map_fd_rx, &i, &sfd[i], BPF_ANY);
 		if (err) {
 			printf("Failed map_fd_rx update sockmap %i '%i:%i'\n",
@@ -845,7 +849,7 @@ static void test_sockmap(int tasks, void *data)
 	}
 
 	/* Delete the elems without programs */
-	for (i = 0; i < 6; i++) {
+	for (i = 2; i < 6; i++) {
 		err = bpf_map_delete_elem(fd, &i);
 		if (err) {
 			printf("Failed delete sockmap %i '%i:%i'\n",