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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 23CCAC433DB for ; Tue, 30 Mar 2021 17:24:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03A94619CD for ; Tue, 30 Mar 2021 17:24:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232059AbhC3RX7 (ORCPT ); Tue, 30 Mar 2021 13:23:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232401AbhC3RXt (ORCPT ); Tue, 30 Mar 2021 13:23:49 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50159C061574 for ; Tue, 30 Mar 2021 10:23:49 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id b7so26007793ejv.1 for ; Tue, 30 Mar 2021 10:23:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=32JzxatUQabuENP6ffJt7g448VuqQqAUlwpVZTSNv9k=; b=PGGcyAGp3wdj470VpYmMyE1kvuXW5Ch7C+h7F1239iibVPd/bNHBijlQr2hA33Fbxu Xuwc0dW+42IyfQG2oIimzT7YbQsbrAdsNpeY/sS29+wslYaOIC+bksBT2s71gjkdOW8B C0O+z5ZeOsw3r5SenH3l+QJjua0uhurBS8xCx9Sc70K9kiJHpJTMcj7J8e7Sfan/GTlj TntVBFyWHm8OzGLBvERQdEV4yzz/34/I1i6VKiP72kG3FAkpheRCXub+Sb/SCF+7Pfrp DXUOBWWMUBdyhQXN4tk2Vzxjdy2prcRcmsc9sZOQGogI7+m2Pq/EAwzDu62Ay8cpimIy WpGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=32JzxatUQabuENP6ffJt7g448VuqQqAUlwpVZTSNv9k=; b=tm976m6X7hy9MvNazgdsTyx8YDX/Wpdo3hHENSA71GEc+RM3+YlWv18V6xvxy66v6w 0oeary6b2B6JLw87AvAdc9PMXaDohOOKiMeWKrX1K8ZsugSuVDwGeWGoZTqhvupbODV7 gXZi0ZFMZEntrcOHg8lmYaKBV7DXzOIkr0/H0vlkiRsed2+23+by2bGJqY3R95l6uO9h CQnq2sWBYNQlYLO/SXDk1IktEFw97+AL+b9QU4Onwq+oMt4bpjvaFG2L1Hk/cE8UXC5S 0flRgQT0HFIwfrkglgVMdpIGZEO5DmZekJkzvrmccmnMKC5azqiQAXTYXe71csc2wOQL StAQ== X-Gm-Message-State: AOAM531yZB/3teo98OTe/0M6GKIgJBpGS0ueVl0EFZjYJ4DGmvL4VZiT IajMJOh+bR4gWJ9NAEP0qq4MfM/PsUwHGC4bN+kL4gM7aynZkNs8 X-Google-Smtp-Source: ABdhPJzGUld0QGldf6zyCn9CnbjHu5dlmKzXS25uf7frVJHMzwz6hpjCgbpb/SKoYulelZuCLu5xKsln+BniUj3sXXU= X-Received: by 2002:a17:906:a896:: with SMTP id ha22mr34086733ejb.503.1617125026643; Tue, 30 Mar 2021 10:23:46 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Naresh Kamboju Date: Tue, 30 Mar 2021 22:53:34 +0530 Message-ID: Subject: Re: WARNING: at fs/proc/generic.c:717 remove_proc_entry To: Linux-Next Mailing List , open list , linux-fsdevel@vger.kernel.org, lkft-triage@lists.linaro.org Cc: Alexey Dobriyan , gladkov.alexey@gmail.com, Colin King , Greg KH , Stephen Rothwell , Christian Brauner , Andrew Morton , Pavel Skripkin , =?UTF-8?Q?Jonathan_Neusch=C3=A4fer?= Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org Small correction, As per available test data the good tag is next-20210326. GOOD: next-20210326 BAD: next-20210330 On Tue, 30 Mar 2021 at 22:19, Naresh Kamboju wrote: > > While running kselftest gpio on x86_64 and i386 the following warnings were > noticed and the device did not recover. > GOOD: next-20210326 > BAD: next-20210330 > > steps to reproduce: > ------------------- > # Boot linux next tag 20210330 on x86_64 machine > # cd /opt/kselftests/default-in-kernel/ > # ./gpio-mockup.sh --> which is doing modprobe gpio-mockup > > Test log: > ------------ > # selftests: gpio: gpio-mockup.sh > # 1. Module load tests > # 1.1. dynamic allocation of gpio > # ./gpio-mockup.sh: line 106: ./gpio-mockup-cdev: No such file or directory > # test failed: line value is 127 when 1 was[ 46.136044] > ------------[ cut here ]------------ > [ 46.141916] remove_proc_entry: removing non-empty directory > 'irq/3', leaking at least 'ttyS1' > expected > # GPI[ 46.150471] WARNING: CPU: 2 PID: 603 at > /usr/src/kernel/fs/proc/generic.c:717 remove_proc_entry+0x1a8/0x1c0 > [ 46.161566] Modules linked in: gpio_mockup(-) x86_pkg_temp_thermal fuse > [ 46.168195] CPU: 2 PID: 603 Comm: modprobe Not tainted > 5.12.0-rc5-next-20210330 #1 > [ 46.175793] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > 2.2 05/23/2018 > [ 46.183217] RIP: 0010:remove_proc_entry+0x1a8/0x1c0 > O gpio-mockup te[ 46.188128] Code: 40 bc 24 a8 48 c7 c7 98 4a 6a a8 > 48 0f 45 c2 49 8b 94 24 b0 00 00 00 4c 8b 80 d8 00 00 00 48 8b 92 d8 > 00 00 00 e8 38 36 cb ff <0f> 0b e9 5b ff ff ff e8 0c f4 c5 00 66 90 66 > 2e 0f 1f 84 00 00 00 > [ 46.208252] RSP: 0018:ffff9da080293c58 EFLAGS: 00010286 > [ 46.213511] RAX: 0000000000000000 RBX: ffff93e8403bcbb8 RCX: 0000000000000000 > [ 46.220650] RDX: 0000000000000001 RSI: ffff93e9afb177f0 RDI: ffff93e9afb177f0 > [ 46.227820] RBP: ffff9da080293c88 R08: 0000000000000001 R09: 0000000000000001 > [ 46.235018] R10: ffff9da080293a80 R11: ffff9da080293a08 R12: ffff93e8403bcb00 > [ 46.242165] R13: ffff93e840263100 R14: 0000000000000001 R15: 0000000000000000 > st FAIL > [ 46.249303] FS: 00007f7dc2501740(0000) GS:ffff93e9afb00000(0000) > knlGS:0000000000000000 > [ 46.258164] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 46.263977] CR2: 00007f7dc1de67f0 CR3: 000000014f292003 CR4: 00000000003706e0 > [ 46.271124] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 46.278292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 46.285459] Call Trace: > [ 46.287926] unregister_irq_proc+0xf8/0x110 > [ 46.292128] free_desc+0x2e/0x70 > [ 46.295393] irq_free_descs+0x54/0x80 > [ 46.299102] irq_domain_free_irqs+0x11b/0x150 > [ 46.303507] irq_dispose_mapping+0x77/0x120 > [ 46.307711] gpio_mockup_dispose_mappings+0x4c/0x60 [gpio_mockup] > [ 46.313817] devm_action_release+0x15/0x20 > [ 46.317933] release_nodes+0x11e/0x220 > [ 46.321707] devres_release_all+0x3c/0x50 > [ 46.325733] device_release_driver_internal+0x10e/0x1d0 > [ 46.331016] driver_detach+0x4d/0xa0 > [ 46.334609] bus_remove_driver+0x5f/0xe0 > [ 46.338553] driver_unregister+0x2f/0x50 > [ 46.342495] platform_driver_unregister+0x12/0x20 > [ 46.347218] gpio_mockup_exit+0x1f/0x5cc [gpio_mockup] > [ 46.352374] __x64_sys_delete_module+0x15b/0x260 > [ 46.357082] do_syscall_64+0x37/0x50 > [ 46.360676] entry_SYSCALL_64_after_hwframe+0x44/0xae > [ 46.365748] RIP: 0033:0x7f7dc1e0f997 > [ 46.369342] Code: 73 01 c3 48 8b 0d 01 a5 2b 00 f7 d8 64 89 01 48 > 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 > 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d1 a4 2b 00 f7 d8 64 89 > 01 48 > [ 46.388108] RSP: 002b:00007ffe35506e78 EFLAGS: 00000206 ORIG_RAX: > 00000000000000b0 > [ 46.395708] RAX: ffffffffffffffda RBX: 000000000134ebd0 RCX: 00007f7dc1e0f997 > [ 46.402883] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000000000134ec38 > [ 46.410031] RBP: 0000000000000000 R08: 00007ffe35505e41 R09: 0000000000000000 > [ 46.417183] R10: 00000000000008da R11: 0000000000000206 R12: 000000000134ec38 > [ 46.424331] R13: 0000000000000001 R14: 000000000134ec38 R15: 00007ffe35508238 > [ 46.431507] irq event stamp: 6645 > [ 46.434845] hardirqs last enabled at (6655): [] > console_unlock+0x34e/0x550 > [ 46.443380] hardirqs last disabled at (6664): [] > console_unlock+0x3b9/0x550 > [ 46.451915] softirqs last enabled at (6564): [] > __do_softirq+0x30e/0x421 > [ 46.460333] softirqs last disabled at (6559): [] > irq_exit_rcu+0xb3/0xc0 > [ 46.468548] ---[ end trace 89d0119dab1b1498 ]--- > [ 46.477938] remove_proc_entry: removing non-empty directory 'irq/4', > leaking at least 'ttyS0' > [ 46.486512] WARNING: CPU: 0 PID: 603 at > /usr/src/kernel/fs/proc/generic.c:717 remove_proc_entry+0x1a8/0x1c0 > > Reported-by: Naresh Kamboju > > metadata: > git branch: master > git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git describe: next-20210330 > kernel-config: > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/995/config > > Full test log: > https://lkft.validation.linaro.org/scheduler/job/2463479#L1481 > > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20210330/testrun/4268028/suite/linux-log-parser/test/check-kernel-exception-2462521/log > > -- > Linaro LKFT > https://lkft.linaro.org