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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 30389C35679 for ; Mon, 24 Feb 2020 08:28:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 066B620675 for ; Mon, 24 Feb 2020 08:28:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727327AbgBXI2S (ORCPT ); Mon, 24 Feb 2020 03:28:18 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:34292 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727290AbgBXI2Q (ORCPT ); Mon, 24 Feb 2020 03:28:16 -0500 Received: by mail-il1-f198.google.com with SMTP id l13so17084818ils.1 for ; Mon, 24 Feb 2020 00:28:14 -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=vIr8nJYtkSIDBRrSoe4ExdWOaV6ukpSgeZOvoFewiik=; b=U0g3fdM4OQdkzmdelvG8CqcV+pGepf75SDdA+q7edT87jauIYi6BH9+Z9So23WPPCI tG1AzxJFFeulpLH1/dQ399WScQkffI8xVwN5nKRXONBWHlSxAHbX6Xa9eIfe69ckNDv1 MAFbVRbWsuvtNFci1OZu7hQ3pFTdtYckvi/5glqGMvnhLwlAiZFaTtpjX5ahzWPAdJml YRQpXZyZCnL9DyRwCXjESqM6NqrCMXAH14mbcAMiCfRQZkKHLJULOq0Rluw+RM2WNslS Y7h6kyEB140eVBfhcQ/OBHsD3sKJNhAOlOQKNJSBrFoqkIHEqRB1P5MhQsJvs73sMtW6 9P7w== X-Gm-Message-State: APjAAAXeaGB762L3vJ9TVdBaRLXDiDan2lBiqG6Y1kZ1jg1Gz4f4EnrE 7shEiJTwUiq6dnZu4UA47LgumI1Fpb+oxddYRKN5KkLJo60d X-Google-Smtp-Source: APXvYqz6Dl+O/zUPHweusabUaTXYFRCVXNHMMm6d2eRzNjR6zt40sXIZNX4g6R3D/LevvNRZjCkHkhD6GjX3E/r9k8PpGfjbo4O2 MIME-Version: 1.0 X-Received: by 2002:a6b:5905:: with SMTP id n5mr49714675iob.242.1582532894287; Mon, 24 Feb 2020 00:28:14 -0800 (PST) Date: Mon, 24 Feb 2020 00:28:14 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000026ac5059f4e27f3@google.com> Subject: WARNING: kobject bug in ib_register_device From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@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: d2eee258 Merge tag 'for-5.6-rc2-tag' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1176f74ee00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3e57a6b450fb9883 dashboard link: https://syzkaller.appspot.com/bug?extid=da615ac67d4dbea32cbc compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1146d245e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e2fde9e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+da615ac67d4dbea32cbc@syzkaller.appspotmail.com batman_adv: batadv0: Interface activated: batadv_slave_1 ------------[ cut here ]------------ kobject: (000000005127ca6c): attempted to be registered with empty name! WARNING: CPU: 0 PID: 8971 at lib/kobject.c:236 kobject_add_internal+0x12c/0xaa0 lib/kobject.c:234 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8971 Comm: syz-executor318 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+0x1fb/0x318 lib/dump_stack.c:118 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xcf/0x1c0 arch/x86/kernel/traps.c:267 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:kobject_add_internal+0x12c/0xaa0 lib/kobject.c:234 Code: 64 f9 41 be fe ff ff ff e9 59 06 00 00 e8 4c 63 64 f9 eb 05 e8 45 63 64 f9 48 c7 c7 83 8b 08 89 4c 89 ee 31 c0 e8 f4 28 36 f9 <0f> 0b 41 be ea ff ff ff e9 2f 06 00 00 48 89 45 b8 e8 1e 63 64 f9 RSP: 0018:ffffc900077e71b0 EFLAGS: 00010246 RAX: 5b8212945f64c000 RBX: 0000000000000000 RCX: ffff888091c3a2c0 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900077e7230 R08: ffffffff81600324 R09: ffffed1015d46618 R10: ffffed1015d46618 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88809fb88668 R14: 1ffff11013f710cd R15: 0000000000000000 kobject_add_varg lib/kobject.c:390 [inline] kobject_add+0xef/0x190 lib/kobject.c:442 device_add+0x4b2/0x1ad0 drivers/base/core.c:2412 ib_register_device+0x11df/0x15b0 drivers/infiniband/core/device.c:1371 rxe_register_device+0x3f6/0x530 drivers/infiniband/sw/rxe/rxe_verbs.c:1231 rxe_add+0x1373/0x14f0 drivers/infiniband/sw/rxe/rxe.c:302 rxe_net_add+0x79/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:539 rxe_newlink+0x31/0x90 drivers/infiniband/sw/rxe/rxe.c:318 nldev_newlink+0x403/0x4a0 drivers/infiniband/core/nldev.c:1538 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x701/0xa20 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1329 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x1ed/0x290 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4433f9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd5d50d798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004433f9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007ffd5d50d7b0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000404990 R14: 0000000000000000 R15: 0000000000000000 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. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches