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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 02F91C11F66 for ; Wed, 14 Jul 2021 18:57:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DA2A8613C5 for ; Wed, 14 Jul 2021 18:57:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229806AbhGNTAS (ORCPT ); Wed, 14 Jul 2021 15:00:18 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:33311 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229735AbhGNTAQ (ORCPT ); Wed, 14 Jul 2021 15:00:16 -0400 Received: by mail-io1-f70.google.com with SMTP id i9-20020a0566021349b02904df6556dad4so1891508iov.0 for ; Wed, 14 Jul 2021 11:57:23 -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=FXh2bXqx9XOXDqPo/4Em2QPdfuhaE8nPMfQxb+O+VqE=; b=kqeFoGxavbnzcz1dQuwrefZM0BtFzox2dX1q20wo2UUTy0hzZgCYn5ok+tFhpBaqiZ WKGCF7mLqfcULHvN9kLWp9YnEAEaZCRNp5TEKdXWQYdvBBlA+X6o/i5MBsk4Ga8yNKVf lCpiBiafSie4HeCA9lGGWF7Amo4N0W0YwTgIukWMvE/x5HZj6kYSVaErwqDdyMBi53mE KkyJMlQ9yx8GxiFLxCZQPofUumsshk0mXNDrzJs1Y1T4s7tUqyNxRHl5yBb4qftd5Y1r 3jDZ7N/g26AmmUCwP4TpZHWhc+HHt/tafLW3ApAh+0NZOmEHhI9nfARozgYXOQnAUnBW hmgg== X-Gm-Message-State: AOAM531+TXSiiUid4iRJUnPh/9hoXPlhYRRfaCCNjSx3SXBKvdiprZJW 8S6zGCh8h0wFL1gNL8zsFTFixtVnPcmgS22Uoq+K8GJ78AgP X-Google-Smtp-Source: ABdhPJxXBwnFfSM1fvlJm/v8iT+oOe2IOUF0qHWKcZN8vlxN2QTV9dSCMR6JOHBVSozuJwcJ1huXu8BttxRsaHarL1Mw8iRbS5yF MIME-Version: 1.0 X-Received: by 2002:a5d:9f11:: with SMTP id q17mr7746713iot.62.1626289043502; Wed, 14 Jul 2021 11:57:23 -0700 (PDT) Date: Wed, 14 Jul 2021 11:57:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bd7c8a05c719ecf2@google.com> Subject: [syzbot] WARNING in internal_create_group 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" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 5d52c906f059 Merge git://git.kernel.org/pub/scm/linux/kern.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=16acf1e2300000 kernel config: https://syzkaller.appspot.com/x/.config?x=51ea6c9df4ed04c4 dashboard link: https://syzkaller.appspot.com/bug?extid=9937dc42271cd87d4b98 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9937dc42271cd87d4b98@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9350 at fs/sysfs/group.c:116 internal_create_group+0x911/0xb20 fs/sysfs/group.c:116 Modules linked in: CPU: 1 PID: 9350 Comm: syz-executor.4 Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:internal_create_group+0x911/0xb20 fs/sysfs/group.c:116 Code: 0f 85 e8 f7 ff ff 41 bd ea ff ff ff e9 34 fd ff ff e8 33 bc 82 ff 48 8b 7c 24 08 e8 89 11 ff ff e9 20 fd ff ff e8 1f bc 82 ff <0f> 0b 41 bd ea ff ff ff e9 0e fd ff ff e8 0d bc 82 ff 48 8b 14 24 RSP: 0018:ffffc9000181f2b0 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90012931000 RDX: 0000000000040000 RSI: ffffffff81f2c5f1 RDI: 0000000000000003 RBP: ffff8880706b9d08 R08: 0000000000000000 R09: ffff8880706b9d0f R10: ffffffff81f2bd9e R11: 0000000000000000 R12: 0000000000000000 R13: ffff88809a948070 R14: 0000000000000000 R15: ffff88809a94807c FS: 00007feaac597700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000006f6c CR3: 000000009d5fa000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_register_queue+0xda/0x570 block/blk-sysfs.c:871 __device_add_disk+0x7b5/0xd10 block/genhd.c:529 add_disk include/linux/genhd.h:217 [inline] nbd_dev_add+0x712/0x900 drivers/block/nbd.c:1709 nbd_genl_connect+0x551/0x1660 drivers/block/nbd.c:1817 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x85b/0xda0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:723 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2392 ___sys_sendmsg+0xf3/0x170 net/socket.c:2446 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2475 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feaac597188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000008 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe11ff566f R14: 00007feaac597300 R15: 0000000000022000 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.