From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga06-in.huawei.com ([45.249.212.32]:59098 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728071AbeJ3XX0 (ORCPT ); Tue, 30 Oct 2018 19:23:26 -0400 Message-ID: <5BD86AD3.1070102@huawei.com> Date: Tue, 30 Oct 2018 22:29:39 +0800 From: zhong jiang MIME-Version: 1.0 To: Benjamin Coddington CC: , , , , LKML , Subject: Re: [Qestion] Lots of memory leaks when mounting and unmounting nfs client to server continuously. References: <5BD85266.6000301@huawei.com> <1DEE371C-69EB-4D92-8F78-535AA5203007@redhat.com> <5BD86392.7070200@huawei.com> <8975EA60-7C42-426A-ADA3-DEE0E2CEE964@redhat.com> In-Reply-To: <8975EA60-7C42-426A-ADA3-DEE0E2CEE964@redhat.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-crypto-owner@vger.kernel.org List-ID: On 2018/10/30 22:03, Benjamin Coddington wrote: > On 30 Oct 2018, at 9:58, zhong jiang wrote: > >> On 2018/10/30 21:06, Benjamin Coddington wrote: >>> Hi zhong jiang, >>> >>> Try asking in linux-nfs.. but I'll also note that 3.10-stable may be >>> missing a number of fixes to leaks in the NFS GSS code. >>> >>> I can see a more than a few fixes to memory leaks with: git log >>> --grep=leak --oneline net/sunrpc/auth_gss/ >>> >> Thanks for your reply. I has tested some of them in the upsteam as you >> have said. but It fails to solve the issue completely. > What have you tested? It is hard to help without specifics. In the latest mainline. we can filter the following result by the key word "leak" in net/sunrpc/auth_gss. 0070ed3 Fix 16-byte memory leak in gssp_accept_sec_context_upcall (has been tested, Fail to work) 78794d1 svcrpc: don't leak contexts on PROC_DESTROY (has been tested, Fail to work) a1d1e9b svcrpc: fix memory leak in gssp_accept_sec_context_upcall (Not yet) e9776d0 SUNRPC: Fix a pipe_version reference leak (Not yet) cdead7c SUNRPC: Fix a potential memory leak in auth_gss (Not yet) 980e5a4 nfsd: fix rsi_cache reference count leak (Not yet) 07a2bf1 SUNRPC: Fix a memory leak in gss_create() (Not yet) 3ab9bb7 SUNRPC: Fix a memory leak in the auth credcache code (existed) 54f9247 knfsd: fix resource leak resulting in module refcount leak for rpcsec_gss_krb5.ko (existed) b797b5b [PATCH] knfsd: svcrpc: fix gss krb5i memory leak (existed) d4a30e7 RPCSEC_GSS: fix leak in krb5 code caused by superfluous kmalloc (Not yet) I suspect that commit d4a30e7 ("RPCSEC_GSS: fix leak in krb5 code caused by superfluous kmalloc") will solve the issue. Further, I will adjust the patch to 3.10. and see what it will happen. Actually I am not sure. :-[ Thanks, zhong jiang.