From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B21FEC43381 for ; Tue, 19 Feb 2019 21:21:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85E022147C for ; Tue, 19 Feb 2019 21:21:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727795AbfBSVVe (ORCPT ); Tue, 19 Feb 2019 16:21:34 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:40754 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726778AbfBSVVd (ORCPT ); Tue, 19 Feb 2019 16:21:33 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 464E11087A83D; Tue, 19 Feb 2019 13:21:33 -0800 (PST) Date: Tue, 19 Feb 2019 13:21:32 -0800 (PST) Message-Id: <20190219.132132.1441357188232859482.davem@davemloft.net> To: tung.q.nguyen@dektech.com.au Cc: netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net Subject: Re: [tipc-discussion][net 1/1] tipc: fix race condition causing hung sendto From: David Miller In-Reply-To: <20190219070310.23888-2-tung.q.nguyen@dektech.com.au> References: <20190219070310.23888-1-tung.q.nguyen@dektech.com.au> <20190219070310.23888-2-tung.q.nguyen@dektech.com.au> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-7 Content-Transfer-Encoding: base64 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 19 Feb 2019 13:21:33 -0800 (PST) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org RnJvbTogVHVuZyBOZ3V5ZW4gPHR1bmcucS5uZ3V5ZW5AZGVrdGVjaC5jb20uYXU+DQpEYXRlOiBU dWUsIDE5IEZlYiAyMDE5IDE0OjAzOjEwICswNzAwDQoNCj4gV2hlbiBzZW5kaW5nIG11bHRpY2Fz dCBtZXNzYWdlcyB2aWEgYmxvY2tpbmcgc29ja2V0LA0KPiBpZiBzZW5kaW5nIGxpbmsgaXMgY29u Z2VzdGVkICh0c2stPmNvbmdfbGlua19jbnQgaXMgc2V0IHRvIDEpLA0KPiB0aGUgc2VuZGluZyB0 aHJlYWQgd2lsbCBiZSBwdXQgaW50byBzbGVlcGluZyBzdGF0ZS4gSG93ZXZlciwNCj4gdGlwY19z a19maWx0ZXJfcmN2KCkgaXMgY2FsbGVkIHVuZGVyIHNvY2tldCBzcGluIGxvY2sgYnV0DQo+IHRp cGNfd2FpdF9mb3JfY29uZCgpIGlzIG5vdC4gU28sIHRoZXJlIGlzIG5vIGd1YXJhbnRlZSB0aGF0 DQo+IHRoZSBzZXR0aW5nIG9mIHRzay0+Y29uZ19saW5rX2NudCB0byAwIGluIHRpcGNfc2tfcHJv dG9fcmN2KCkgaW4NCj4gQ1BVLTEgd2lsbCBiZSBwZXJjZWl2ZWQgYnkgQ1BVLTAuIElmIHRoYXQg aXMgdGhlIGNhc2UsIHRoZSBzZW5kaW5nDQo+IHRocmVhZCBpbiBDUFUtMCBhZnRlciBiZWluZyB3 YWtlbiB1cCwgd2lsbCBjb250aW51ZSB0byBzZWUNCj4gdHNrLT5jb25nX2xpbmtfY250IGFzIDEg YW5kIHB1dCB0aGUgc2VuZGluZyB0aHJlYWQgaW50byBzbGVlcGluZw0KPiBzdGF0ZSBhZ2Fpbi4g VGhlIHNlbmRpbmcgdGhyZWFkIHdpbGwgc2xlZXAgZm9yZXZlci4NCiAuLi4NCj4gVGhpcyBjb21t aXQgZml4ZXMgaXQgYnkgYWRkaW5nIG1lbW9yeSBiYXJyaWVyIHRvIHRpcGNfc2tfcHJvdG9fcmN2 KCkNCj4gYW5kIHRpcGNfd2FpdF9mb3JfY29uZCgpLg0KPiANCj4gQWNrZWQtYnk6IEpvbiBNYWxv eSA8am9uLm1hbG95QGVyaWNzc29uLmNvbT4NCj4gU2lnbmVkLW9mZi1ieTogVHVuZyBOZ3V5ZW4g PHR1bmcucS5uZ3V5ZW5AZGVrdGVjaC5jb20uYXU+DQoNCllvdSByZWFsbHkgbmVlZCB0byBidWls ZCB0ZXN0IHRoaXMgc3R1ZmYgcHJvcGVybHk6DQoNCm5ldC90aXBjL3NvY2tldC5jOiBJbiBmdW5j dGlvbiChX190aXBjX3NodXRkb3duojoNCi4vaW5jbHVkZS9saW51eC93YWl0Lmg6MTExOToyOiB3 YXJuaW5nOiBJU08gQzkwIGZvcmJpZHMgbWl4ZWQgZGVjbGFyYXRpb25zIGFuZCBjb2RlIFstV2Rl Y2xhcmF0aW9uLWFmdGVyLXN0YXRlbWVudF0NCiAgc3RydWN0IHdhaXRfcXVldWVfZW50cnkgbmFt ZSA9IHsgICAgIFwNCiAgXn5+fn5+DQoNCllvdSBjYW4ndCBwdXQgdGhlIHNtcF9ybWIoKTsgYmVm b3JlIHRoZSBERUZJTkVfV0FJVF9GVU5DKCkgaW4gdGhhdA0KYmFzaWMgYmxvY2suDQo=