From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Frederic Sowa Subject: [PATCH net v3] ovs: limit ovs recursions in ovs_execute_actions to not corrupt stack Date: Fri, 15 Jan 2016 15:33:47 +0100 Message-ID: <1452868427-5655-1-git-send-email-hannes@stressinduktion.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org, Simon Horman To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-yBygre7rU0TnMu66kgdUjQ@public.gmane.org Sender: "dev" List-Id: netdev.vger.kernel.org SXQgd2FzIHNlZW4gdGhhdCBkZWZlY3RpdmUgY29uZmlndXJhdGlvbnMgb2Ygb3BlbnZzd2l0Y2gg Y291bGQgb3ZlcndyaXRlCnRoZSBTVEFDS19FTkRfTUFHSUMgYW5kIGNhdXNlIGEgaGFyZCBjcmFz aCBvZiB0aGUga2VybmVsIGJlY2F1c2Ugb2YgdG9vCm1hbnkgcmVjdXJzaW9ucyB3aXRoaW4gb3Zz LgoKVGhpcyBwcm9ibGVtIGFyaXNlcyBkdWUgdG8gdGhlIGhpZ2ggc3RhY2sgdXNhZ2Ugb2Ygb3Bl bnZzd2l0Y2guIFRoZSByZXN0Cm9mIHRoZSBrZXJuZWwgaXMgZmluZSB3aXRoIHRoZSBjdXJyZW50 IGxpbWl0IG9mIDEwIChSRUNVUlNJT05fTElNSVQpLgoKV2UgdXNlIHRoZSBhbHJlYWR5IGV4aXN0 aW5nIHJlY3Vyc2lvbiBjb3VudGVyIGluIG92c19leGVjdXRlX2FjdGlvbnMgdG8KaW1wbGVtZW50 IGFuIHVwcGVyIGJvdW5kIG9mIDUgcmVjdXJzaW9ucy4KCkNjOiBQcmF2aW4gU2hlbGFyIDxwc2hl bGFyQG92bi5vcmc+CkNjOiBTaW1vbiBIb3JtYW4gPHNpbW9uLmhvcm1hbkBuZXRyb25vbWUuY29t PgpTaWduZWQtb2ZmLWJ5OiBIYW5uZXMgRnJlZGVyaWMgU293YSA8aGFubmVzQHN0cmVzc2luZHVr dGlvbi5vcmc+ClJldmlld2VkLWJ5OiBTaW1vbiBIb3JtYW4gPHNpbW9uLmhvcm1hbkBuZXRyb25v bWUuY29tPgotLS0KdjIpIGFkZGVkIHByZWVtcHRpb24gZ3VhcmRzCnYzKSBQcmF2aW4gc3VnZ2Vz dGVkIHRvIHJldXNlIHRoZSBvdnNfZXhlY3V0ZV9hY3Rpb25zIGNvdW50ZXIgd2hpY2ggdGhpcwog ICAgcGF0Y2ggZG9lcy4gQWxzbyBvbmx5IGFsbG93IDUgcmVjdXJzaW9ucyBhcyBzdWdnZXN0ZWQg YnkgUHJhdmluLgoKIG5ldC9vcGVudnN3aXRjaC9hY3Rpb25zLmMgfCAyMSArKysrKysrKysrKysr KysrLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNiBpbnNlcnRpb25zKCspLCA1IGRlbGV0aW9ucygt KQoKZGlmZiAtLWdpdCBhL25ldC9vcGVudnN3aXRjaC9hY3Rpb25zLmMgYi9uZXQvb3BlbnZzd2l0 Y2gvYWN0aW9ucy5jCmluZGV4IGM4OGQwZjJkM2UwMTliLi45ZDhhMDlmZDcxNmFiZSAxMDA2NDQK LS0tIGEvbmV0L29wZW52c3dpdGNoL2FjdGlvbnMuYworKysgYi9uZXQvb3BlbnZzd2l0Y2gvYWN0 aW9ucy5jCkBAIC0xMTYwLDE3ICsxMTYwLDI4IEBAIGludCBvdnNfZXhlY3V0ZV9hY3Rpb25zKHN0 cnVjdCBkYXRhcGF0aCAqZHAsIHN0cnVjdCBza19idWZmICpza2IsCiAJCQljb25zdCBzdHJ1Y3Qg c3dfZmxvd19hY3Rpb25zICphY3RzLAogCQkJc3RydWN0IHN3X2Zsb3dfa2V5ICprZXkpCiB7Ci0J aW50IGxldmVsID0gdGhpc19jcHVfcmVhZChleGVjX2FjdGlvbnNfbGV2ZWwpOwotCWludCBlcnI7 CisJc3RhdGljIGNvbnN0IGludCBvdnNfcmVjdXJzaW9uX2xpbWl0ID0gNTsKKwlpbnQgZXJyLCBs ZXZlbDsKKworCXByZWVtcHRfZGlzYWJsZSgpOworCWxldmVsID0gX190aGlzX2NwdV9pbmNfcmV0 dXJuKGV4ZWNfYWN0aW9uc19sZXZlbCk7CisJaWYgKGxldmVsID4gb3ZzX3JlY3Vyc2lvbl9saW1p dCkgeworCQluZXRfY3JpdF9yYXRlbGltaXRlZCgib3ZzOiByZWN1cnNpb24gbGltaXQgcmVhY2hl ZCBvbiBkYXRhcGF0aCAlcywgcHJvYmFibGUgY29uZmlndXJhdGlvbiBlcnJvclxuIiwKKwkJCQkg ICAgIG92c19kcF9uYW1lKGRwKSk7CisJCWtmcmVlX3NrYihza2IpOworCQllcnIgPSAtRU5FVERP V047CisJCWdvdG8gb3V0OworCX0KIAotCXRoaXNfY3B1X2luYyhleGVjX2FjdGlvbnNfbGV2ZWwp OwogCWVyciA9IGRvX2V4ZWN1dGVfYWN0aW9ucyhkcCwgc2tiLCBrZXksCiAJCQkJIGFjdHMtPmFj dGlvbnMsIGFjdHMtPmFjdGlvbnNfbGVuKTsKIAotCWlmICghbGV2ZWwpCisJaWYgKGxldmVsID09 IDEpCiAJCXByb2Nlc3NfZGVmZXJyZWRfYWN0aW9ucyhkcCk7CiAKLQl0aGlzX2NwdV9kZWMoZXhl Y19hY3Rpb25zX2xldmVsKTsKK291dDoKKwlfX3RoaXNfY3B1X2RlYyhleGVjX2FjdGlvbnNfbGV2 ZWwpOworCXByZWVtcHRfZW5hYmxlKCk7CiAJcmV0dXJuIGVycjsKIH0KIAotLSAKMi41LjAKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRldiBtYWlsaW5n IGxpc3QKZGV2QG9wZW52c3dpdGNoLm9yZwpodHRwOi8vb3BlbnZzd2l0Y2gub3JnL21haWxtYW4v bGlzdGluZm8vZGV2Cg==