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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 7E681C04AB4 for ; Mon, 13 May 2019 07:07:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D1BE20B7C for ; Mon, 13 May 2019 07:07:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727582AbfEMHHG (ORCPT ); Mon, 13 May 2019 03:07:06 -0400 Received: from mail-it1-f198.google.com ([209.85.166.198]:51118 "EHLO mail-it1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726132AbfEMHHF (ORCPT ); Mon, 13 May 2019 03:07:05 -0400 Received: by mail-it1-f198.google.com with SMTP id o128so4700429ita.0 for ; Mon, 13 May 2019 00:07:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=HS7eXqtSjToahbF+8YGfUVULm5QmPVdr7jt+lugTFD0=; b=Wvg+NpHRksWR69EApNrLTXrKAEloqn3Ujo4widu5OU7s17GDYgN5UfMT0+eEyMxaew tRW3NWh9S/BiPXrEHKxBHuXSyFX3xdNsDfAYBHD02v429K8Ng9RmcoM6Abd7qZngzSkK m2A9Zubklf8Up93JEGaCODHgCp7HbUons7ysYrUN0tcdN6Y3Y/iM0Zoklt5Kf9zbwXDi 7vVGSdc1q7dc1ef3v64xxtBlJkj8+zDXsLtNvW2zazaVAI+IVmGSo6nbszlLwibVz2+6 EdVSeWB6ocM/nUUe93Gdmv/57ikXv6w3Xtq94RE2fxiwbN3jK+tsu6x1jrqrkXccCzxe ZXPg== X-Gm-Message-State: APjAAAVvF76mhYwYw1nBhItuLZ4jOotEyY+ttbl7qOMvM8gu/dRuQYKf fKZD5eD4GKeW9ezk6cSOFk5Dn8NRCMXEdtvIM6TpopAETP2M X-Google-Smtp-Source: APXvYqxaG5duQ7HGiFc3gBEuHKSxI56NFqET64FcR9HPXB9WBzlCxAVv84TLU/32UsUNJ0ZOe+9LaDT6i+7In6KbmbgvVFdOkeY2 MIME-Version: 1.0 X-Received: by 2002:a02:8585:: with SMTP id d5mr18222190jai.69.1557731225226; Mon, 13 May 2019 00:07:05 -0700 (PDT) Date: Mon, 13 May 2019 00:07:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000055d6590588bf90bf@google.com> Subject: linux-next test error: WARNING in remove_proc_entry From: syzbot To: anna.schumaker@netapp.com, bfields@fieldses.org, davem@davemloft.net, jlayton@kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, trond.myklebust@hammerspace.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 04c4b677 Add linux-next specific files for 20190513 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10a413c8a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8e08a763b62ad3a dashboard link: https://syzkaller.appspot.com/bug?extid=4887e9dd9042fae2a9c2 compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4887e9dd9042fae2a9c2@syzkaller.appspotmail.com ------------[ cut here ]------------ remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' WARNING: CPU: 0 PID: 26 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 fs/proc/generic.c:681 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 26 Comm: kworker/u4:2 Not tainted 5.1.0-next-20190513 #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x75a kernel/panic.c:218 __warn.cold+0x20/0x47 kernel/panic.c:575 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972 RIP: 0010:remove_proc_entry+0x367/0x410 fs/proc/generic.c:681 Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4c 49 8b 95 d0 00 00 00 48 c7 c6 80 85 97 87 48 c7 c7 00 85 97 87 e8 c7 b1 6d ff <0f> 0b e9 4b fe ff ff e8 6d 54 d4 ff e9 b5 fd ff ff e8 23 55 d4 ff RSP: 0018:ffff8880a9a8fb10 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 1ffff11015351f64 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815b20a6 RDI: ffffed1015351f54 RBP: ffff8880a9a8fbc0 R08: ffff8880a9a7c6c0 R09: ffff8880a9a7cfb0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099b87280 R13: ffff8880a55c77c0 R14: ffff888099b87330 R15: dffffc0000000000 rpc_proc_exit+0x3e/0x50 net/sunrpc/stats.c:335 sunrpc_exit_net+0x187/0x2d0 net/sunrpc/sunrpc_syms.c:73 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:552 process_one_work+0x98e/0x1790 kernel/workqueue.c:2268 worker_thread+0x98/0xe40 kernel/workqueue.c:2414 kthread+0x357/0x430 kernel/kthread.c:254 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.