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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2606FC4167B for ; Mon, 2 Jan 2023 08:11:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230462AbjABILj (ORCPT ); Mon, 2 Jan 2023 03:11:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230253AbjABILh (ORCPT ); Mon, 2 Jan 2023 03:11:37 -0500 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 235C523E for ; Mon, 2 Jan 2023 00:11:37 -0800 (PST) Received: by mail-io1-f70.google.com with SMTP id t15-20020a5d81cf000000b006f95aa9ba6eso2211699iol.16 for ; Mon, 02 Jan 2023 00:11:37 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=39whyISyIQZSTrewZBDdTakZw9W/4TFgVxatD4Bz0IM=; b=FfU/6s7mwyUo9NctroVOQkon5M1Q59mY0Pa4UmzTEhzlfXoQOQQ72mDGlKvZOv8Tng ozZZozifIF6xzJH/ONnDeUl/3QOFBJGFShqSIQ0i+WIJZiwbJh2iun2VrP7xoPSuZoZ0 ux0+CUSNDOK42uCJ0cERUHzLr7xt0ayG3ZnCL/06JolbZpcb6IXyqvqgmfCYwvtSgQjC BkqvI2KdyJj67JmD2CRRG9jCfslzCuv3Fhf3AgKcoz1zJIhjKWPDBg/dGbQFxqOH5+KL S4kKnPkyJzIN3E3El0w/Tw2xCT8PCQjPPK9fXXV4nmD7GvtsI3uTpxMD9fBiI9oz7wL5 BMEw== X-Gm-Message-State: AFqh2ko13N2zUD/wAbP6IZb5txMoGVZOPj25glAbhSC2buPimVbnHFIV v8Vf6gUXKCslfLvE1BFyGd5TRS4KC9EKK6mHbc5JsC1xJvST X-Google-Smtp-Source: AMrXdXvm2a2pIwmW3dPtLPlMldWRH6B9GPWRoBbKyI1Z2gnC/A/0dLc+shTVwLXnhlwGD2vqJr9NsvhdCtZ7/xujTugVO/0ZkBzk MIME-Version: 1.0 X-Received: by 2002:a05:6e02:dc4:b0:30c:18d:272b with SMTP id l4-20020a056e020dc400b0030c018d272bmr2161784ilj.282.1672647096445; Mon, 02 Jan 2023 00:11:36 -0800 (PST) Date: Mon, 02 Jan 2023 00:11:36 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000004b24605f143804b@google.com> Subject: [syzbot] WARNING: locking bug in inet_send_prepare From: syzbot To: bpf@vger.kernel.org, davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: a5541c0811a0 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=124dd2a2480000 kernel config: https://syzkaller.appspot.com/x/.config?x=cbd4e584773e9397 dashboard link: https://syzkaller.appspot.com/bug?extid=52866e24647f9a23403f compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d322e0480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1208adc4480000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4b7702208fb9/disk-a5541c08.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9ec0153ec051/vmlinux-a5541c08.xz kernel image: https://storage.googleapis.com/syzbot-assets/6f8725ad290a/Image-a5541c08.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+52866e24647f9a23403f@syzkaller.appspotmail.com ------------[ cut here ]------------ Looking for class "l2tp_sock" with key l2tp_socket_class, but found a different class "slock-AF_INET6" with the same key WARNING: CPU: 0 PID: 24577 at kernel/locking/lockdep.c:940 look_up_lock_class+0x158/0x160 Modules linked in: CPU: 0 PID: 24577 Comm: syz-executor105 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : look_up_lock_class+0x158/0x160 lr : look_up_lock_class+0x154/0x160 kernel/locking/lockdep.c:937 sp : ffff800014a7b980 x29: ffff800014a7b980 x28: 0000000000000000 x27: 0000000000000000 x26: ffff0000d0864bb0 x25: ffff80000b22ff14 x24: 0000000000000000 x23: ffff80000eec8000 x22: 0000000000000001 x21: ffff80000f1c3018 x20: 0000000000000000 x19: ffff80000dc27c18 x18: 0000000000000000 x17: 6f6620747562202c x16: 7373616c635f7465 x15: 6b636f735f707432 x14: 6c2079656b206874 x13: 205d373735343254 x12: 5b5d313634303832 x11: ff808000081c4d64 x10: 0000000000000000 x9 : ad3022ef6adb7200 x8 : ad3022ef6adb7200 x7 : 545b5d3136343038 x6 : ffff80000c091ebc x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000201 x0 : ffff80000dc27c18 Call trace: look_up_lock_class+0x158/0x160 register_lock_class+0x4c/0x2f8 kernel/locking/lockdep.c:1289 __lock_acquire+0xa8/0x3084 kernel/locking/lockdep.c:4934 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x54/0x6c kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x88/0xd8 net/core/sock.c:3450 lock_sock include/net/sock.h:1721 [inline] inet_autobind net/ipv4/af_inet.c:177 [inline] inet_send_prepare+0x70/0xf4 net/ipv4/af_inet.c:813 inet6_sendmsg+0x30/0x80 net/ipv6/af_inet6.c:660 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x1e4/0x280 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __arm64_sys_sendto+0x30/0x44 net/socket.c:2125 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 162 hardirqs last enabled at (161): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (161): [] el0_svc_common+0x40/0x220 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (160): [] el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 softirqs last enabled at (156): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (162): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (162): [] lock_sock_nested+0x88/0xd8 net/core/sock.c:3450 ---[ end trace 0000000000000000 ]--- --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches