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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_HIGH 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 3354FFD21E1 for ; Mon, 30 Jul 2018 13:08:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC2E120881 for ; Mon, 30 Jul 2018 13:08:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="I03h0rxN" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC2E120881 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=arista.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732019AbeG3Ono (ORCPT ); Mon, 30 Jul 2018 10:43:44 -0400 Received: from mail-ed1-f65.google.com ([209.85.208.65]:45389 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726649AbeG3Ono (ORCPT ); Mon, 30 Jul 2018 10:43:44 -0400 Received: by mail-ed1-f65.google.com with SMTP id s16-v6so4163758edq.12 for ; Mon, 30 Jul 2018 06:08:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=message-id:subject:from:to:cc:date:in-reply-to:references :mime-version:content-transfer-encoding; bh=irCMglaYCgTyZsJDaXGcM2Q0kfEPp/Cwn4ayDBIvsWU=; b=I03h0rxNjQr9zd5k/e7HUUWEWVUSgYasIsbZ5kfJPNsVO4bNw6Liws5eghlfUewGyu WNoXu4/nEgDKs5vS7GFAyH9DOkmNU11M1iqm0iFACtpqaqoq9eoifDhaAxdM7UGDjJ4t b2FXZOhlxloP/CW1N48Sq8ufgU6l0DXXvMBIOW7415MLFx5kpF8RfC1f35vmQhQmnIqY i9IeymoOFwKjPXAea8d8b5eX92HTDjtTlEaZV6MwYS3fXzopNdTI5bd+wmJPdoydBV7I 0Ow+0vgRnLXmb9hZ2h5v1dMn/Jq+YalrcxJ9WVryNp2TdeUgKz889JiaiJ9eEkk5h6Jx KgRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=irCMglaYCgTyZsJDaXGcM2Q0kfEPp/Cwn4ayDBIvsWU=; b=UQ/S08yG8zQNIF6KkbAg3NVctCaX5H4lFSLuIo9TnQq3crDSkIya4dusU34CkuO2x0 K+zzezHcIiULcdxlaUhatWmU1sCduxdJ7fHO7lk30DXW9Ns4l9jz8jK8oFPJBoGcr+5c hkSx8u6b5qaSsEO7Y2dwE4oeHcLJjZQ2tGDg5+x8159W4u4xvPZEXtf0NHeg6zreGu+9 21D7nmvqBtz7NJdirUKP+0wbKCiBDZq727/X616PqnH7EomrnsxIeXhPsyxvVMqGjlwD Y6EPF/sK9nPqgZLkioiNh4o3GJkImkAcV/sS1VksXVpC6GXosbna518ucRz6uqxe2QTu 1K+Q== X-Gm-Message-State: AOUpUlGsY43/wB/TGK8pApeSBfexWy9j6XF2bZ8ocqjzY/jgSC/KSfjf V30FXm4UHlQ1PZ3zHv8vKyJ8Wg== X-Google-Smtp-Source: AAOMgpfe6iziaIdF7+CFFWRlmCoYc4F3QYwM6wM72U+ZrB8IqsscRj561GLLzPBfIDgC0BABJLdm6A== X-Received: by 2002:a50:a186:: with SMTP id 6-v6mr8347409edk.12.1532956126891; Mon, 30 Jul 2018 06:08:46 -0700 (PDT) Received: from dhcp.ire.aristanetworks.com ([217.173.96.166]) by smtp.gmail.com with ESMTPSA id i15-v6sm2414787edq.56.2018.07.30.06.08.45 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 30 Jul 2018 06:08:46 -0700 (PDT) Message-ID: <1532956125.2679.28.camel@arista.com> Subject: Re: [LKP] 7acf9d4237 BUG: kernel hang in test stage From: Dmitry Safonov To: kernel test robot Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, LKP , David Miller Date: Mon, 30 Jul 2018 14:08:45 +0100 In-Reply-To: <20180730081219.GC30690@shao2-debian> References: <20180730081219.GC30690@shao2-debian> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.24.6 (3.24.6-1.fc26) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks for the report, looking into this.. On Mon, 2018-07-30 at 16:12 +0800, kernel test robot wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad > commit is > > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master > > commit 7acf9d4237c46894e0fa0492dd96314a41742e84 > Author: Dmitry Safonov > AuthorDate: Fri Jul 27 16:54:44 2018 +0100 > Commit: David S. Miller > CommitDate: Sun Jul 29 12:50:19 2018 -0700 > > netlink: Do not subscribe to non-existent groups > > Make ABI more strict about subscribing to group > ngroups. > Code doesn't check for that and it looks bogus. > (one can subscribe to non-existing group) > Still, it's possible to bind() to all possible groups with (-1) > > Cc: "David S. Miller" > Cc: Herbert Xu > Cc: Steffen Klassert > Cc: netdev@vger.kernel.org > Signed-off-by: Dmitry Safonov > Signed-off-by: David S. Miller > > 9939a46d90 NET: stmmac: align DMA stuff to largest cache line length > 7acf9d4237 netlink: Do not subscribe to non-existent groups > 25432eba9c openvswitch: meter: Fix setting meter id for new entries > +--------------------------------------------------+------------+-- > ----------+------------+ > > | 9939a46d90 | > > 7acf9d4237 | 25432eba9c | > > +--------------------------------------------------+------------+-- > ----------+------------+ > > boot_successes | 20 | > > 4 | 4 | > > boot_failures | 22 | > > 11 | 11 | > > INFO:task_blocked_for_more_than#seconds | > > 22 | | | > > Kernel_panic-not_syncing:hung_task:blocked_tasks | > > 22 | | | > > BUG:kernel_hang_in_test_stage | 0 | > > 11 | 11 | > > +--------------------------------------------------+------------+-- > ----------+------------+ > > [ 1414.113020] Writes: Total: 373492244 Max/Min: 0/0 Fail: 0 > [ 1472.149785] CE: Reprogramming failure. Giving up > [ 1475.552294] Writes: Total: 387526813 Max/Min: 0/0 Fail: 0 > [ 1509.501097] CE: Reprogramming failure. Giving up > [ 1536.992336] Writes: Total: 403788741 Max/Min: 0/0 Fail: 0 > BUG: kernel hang in test stage > > > # HH:MM > RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD > git bisect start 0a930dcfc77cb12bbf9bffd69fbadcb0c237f577 > d72e90f33aa4709ebecc5005562f52335e106a60 -- > git bisect bad f605359102be537b6217dc49600f4369d1f04932 # > 07:19 B 0 11 27 0 Merge 'm68k/master' into devel- > catchup-201807300507 > git bisect bad 375347c493a490f493fafa02f30fa23179acbdb9 # > 07:53 B 0 11 27 0 Merge 'linux-review/Todd- > Poynor/staging-gasket-fixes-and-cleanups/20180730-034316' into devel- > catchup-201807300507 > git bisect good 86b34080126c3f4254a3f9e8d5dcb447d9233bc8 # > 08:05 G 11 0 6 6 0day base guard for 'devel-catchup- > 201807300507' > git bisect bad ed28433e6f289d33dd6b4bbf627a60396234db58 # > 08:40 B 0 1 17 0 Merge 'net/master' into devel- > catchup-201807300507 > git bisect good 5b891af7fca14526b2a87c6f38b004e2df655ef4 # > 08:54 G 11 0 11 11 bpf: Replace [u]int32_t and > [u]int64_t in libbpf > git bisect good c259b4fb33ee6e7667bf1d34bf0803b7c5fdbdce # > 09:03 G 10 0 3 3 netdevsim: don't leak devlink > resources > git bisect good b0753408aadf32c7ece9e6b765017881e54af833 # > 09:17 G 11 0 3 3 net: mdio-mux: bcm-iproc: fix wrong > getter and setter pair > git bisect good 71eb5255f55bdb484d35ff7c9a1803f453dfbf82 # > 09:25 G 11 0 11 11 bpf: use GFP_ATOMIC instead of > GFP_KERNEL in bpf_parse_prog() > git bisect good 6d27c6dd1012e7be748ec05da78556319718fbe7 # > 09:39 G 11 0 4 4 Merge branch 'net-socket-Fix- > potential-spectre-v1-gadgets' > git bisect good 9939a46d90c6c76f4533d534dbadfa7b39dc6acc # > 09:55 G 11 0 7 7 NET: stmmac: align DMA stuff to > largest cache line length > git bisect bad 25432eba9cd8f2ef5afef55be811b010a004b5fa # > 10:28 B 0 11 27 0 openvswitch: meter: Fix setting meter > id for new entries > git bisect bad 7acf9d4237c46894e0fa0492dd96314a41742e84 # > 11:03 B 0 6 22 0 netlink: Do not subscribe to non- > existent groups > # first bad commit: [7acf9d4237c46894e0fa0492dd96314a41742e84] > netlink: Do not subscribe to non-existent groups > git bisect good 9939a46d90c6c76f4533d534dbadfa7b39dc6acc # > 11:14 G 31 0 15 22 NET: stmmac: align DMA stuff to > largest cache line length > # extra tests with debug options > git bisect bad 7acf9d4237c46894e0fa0492dd96314a41742e84 # > 11:48 B 0 11 27 0 netlink: Do not subscribe to non- > existent groups > # extra tests on HEAD of linux-devel/devel-catchup-201807300507 > git bisect bad 0a930dcfc77cb12bbf9bffd69fbadcb0c237f577 # > 11:49 B 0 13 31 0 0day head guard for 'devel-catchup- > 201807300507' > # extra tests on tree/branch net/master > git bisect bad 25432eba9cd8f2ef5afef55be811b010a004b5fa # > 11:50 B 0 11 27 0 openvswitch: meter: Fix setting meter > id for new entries > # extra tests with first bad commit reverted > git bisect good e61543e57747e8fd80390af39504365a392cef2b # > 12:04 G 11 0 4 4 Revert "netlink: Do not subscribe to > non-existent groups" > > --- > 0-DAY kernel test infrastructure Open Source > Technology Center > https://lists.01.org/pipermail/lkp Intel > Corporation