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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 2BB34C4BA24 for ; Thu, 27 Feb 2020 06:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E901724656 for ; Thu, 27 Feb 2020 06:09:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726575AbgB0GJO (ORCPT ); Thu, 27 Feb 2020 01:09:14 -0500 Received: from mail-io1-f70.google.com ([209.85.166.70]:52842 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725790AbgB0GJN (ORCPT ); Thu, 27 Feb 2020 01:09:13 -0500 Received: by mail-io1-f70.google.com with SMTP id l62so2176889ioa.19 for ; Wed, 26 Feb 2020 22:09:13 -0800 (PST) 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=Mghh8SCiDdbHvDX8JBCxoVgF15o5weHGC4OfyCFcXZQ=; b=dy5TdNYaiqTeBqO490ZH/u7Jbjcu1Kbw6g7z3bMmQiBmzT1j+3SnDEiAyz3DjdhxcU NROhcg/YdKuKRKsK/9BZC7x/Ep8H+K1fN0GC//RuZMvZW6nZp4OoQYyK18RHhPQz8NWU XaaWZwa+/gqwipbpE71foSShp+FosKnpqomB5CcFWSK12pwO95JyI0qxauVURAm2C+yg rTZA2QB0G1F6rRYXZy7QkLZbnwMGmN7J9L8HUCfdeg4XHk8f7YGEbJ7yte+CubQ4HU3p 9c+g/hysB8Cm/HC7kxbns4daqxzgsiC9b8BZEoBDz47fzLjjTRrFCNMh7Y8jFDB/omXR A1DQ== X-Gm-Message-State: APjAAAXps9nOuOACaz6eualBCYQ2br7iWkhP038/O49fFpx7xR085gJF AcfcdNELu4n5sMSCzuT/V3cG/6XvzvfTCaIEfY2IL++wqR+/ X-Google-Smtp-Source: APXvYqxGwmUJGnFtTxD5+jkI1/WYe0cDkI2Jl/oNwZusdut3sLbK9MlFM4lt46RaRvKB1AL9aWkHOzFomVNoiZKInuaEu5vlsFxa MIME-Version: 1.0 X-Received: by 2002:a05:6e02:ea9:: with SMTP id u9mr3571292ilj.40.1582783753318; Wed, 26 Feb 2020 22:09:13 -0800 (PST) Date: Wed, 26 Feb 2020 22:09:13 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005f77d6059f888f2e@google.com> Subject: WARNING: kobject bug in add_one_compat_dev From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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: 732a0dee Merge branch 'mlxfw-Improve-error-reporting-and-F.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17a17a29e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b8906eb6a7d6028 dashboard link: https://syzkaller.appspot.com/bug?extid=ab4dae63f7d310641ded 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+ab4dae63f7d310641ded@syzkaller.appspotmail.com kobject: (0000000004952746): attempted to be registered with empty name! WARNING: CPU: 0 PID: 329 at lib/kobject.c:234 kobject_add_internal+0x7ac/0x9a0 lib/kobject.c:234 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 329 Comm: syz-executor.5 Not tainted 5.6.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:kobject_add_internal+0x7ac/0x9a0 lib/kobject.c:234 Code: 1a 98 ca f9 e9 f0 f8 ff ff 4c 89 f7 e8 6d 98 ca f9 e9 95 f9 ff ff e8 c3 f0 8b f9 4c 89 e6 48 c7 c7 a0 0e 1a 89 e8 e3 41 5c f9 <0f> 0b 41 bd ea ff ff ff e9 52 ff ff ff e8 a2 f0 8b f9 0f 0b e8 9b RSP: 0018:ffffc90005b27908 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815eae46 RDI: fffff52000b64f13 RBP: ffffc90005b27960 R08: ffff88805aeba480 R09: ffffed1015d06659 R10: ffffed1015d06658 R11: ffff8880ae8332c7 R12: ffff8880a37fd000 R13: 0000000000000000 R14: ffff888096691780 R15: 0000000000000001 kobject_add_varg lib/kobject.c:390 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:442 device_add+0x3be/0x1d00 drivers/base/core.c:2412 add_one_compat_dev drivers/infiniband/core/device.c:901 [inline] add_one_compat_dev+0x46a/0x7e0 drivers/infiniband/core/device.c:857 rdma_dev_init_net+0x2eb/0x490 drivers/infiniband/core/device.c:1120 ops_init+0xb3/0x420 net/core/net_namespace.c:137 setup_net+0x2d5/0x8b0 net/core/net_namespace.c:327 copy_net_ns+0x29e/0x5a0 net/core/net_namespace.c:468 create_new_namespaces+0x403/0xb50 kernel/nsproxy.c:108 unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:229 ksys_unshare+0x444/0x980 kernel/fork.c:2955 __do_sys_unshare kernel/fork.c:3023 [inline] __se_sys_unshare kernel/fork.c:3021 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:3021 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c429 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3be2b6dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f3be2b6e6d4 RCX: 000000000045c429 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000c3e R14: 00000000004ce1f6 R15: 000000000076bf2c Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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