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 B9E3AC3DA79 for ; Thu, 29 Dec 2022 06:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231250AbiL2G0l (ORCPT ); Thu, 29 Dec 2022 01:26:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230254AbiL2G0k (ORCPT ); Thu, 29 Dec 2022 01:26:40 -0500 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81674A196 for ; Wed, 28 Dec 2022 22:26:37 -0800 (PST) Received: by mail-il1-f197.google.com with SMTP id y5-20020a056e021be500b0030bc4f23f0aso11356367ilv.3 for ; Wed, 28 Dec 2022 22:26:37 -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:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=BhbflDOV2k1KLyHwZs0cA13pq6md2aueXIcWzsW7/xQ=; b=2gubG0NyMNEr2RFtjPDJGB0VdYQw2dmZub/v2uVO41d4Kjx61zuuB4xSTuUyueJZSA HzKIjoB+exXO5l4UXV8MS4b+dzKrsL+8n7jRjWvoi0s/OiFUNZPGrYRCNPbE8A5JPMq5 V0E5KGjzXXpkm/Z8Tq9bdwgQqCnuF+82wPX1RiL7NNEhai+zhRQbj1EIc+XMFtIX0VE2 zO/EN1R2ycKhsnCy9Bak0dw/3FymIC6NgYP4ladkRPjJmuPSR0DWzsASjoxazh/u7i7f ymRzgAP0PGcz9809ByMSe4r6hF0htB2txevznsP0xA2AHb52G2kzRY2ORaiOfu6XOjpH th8g== X-Gm-Message-State: AFqh2kqNqKze7LmwEsXJ5ACVAjuB++lp6IRi5gPtYYxIQ8yTvXBrfknp LolRtUtUBn8BHiFnb6r678Tn36C0W8jqbjAjxCI0kcgmLKwQ X-Google-Smtp-Source: AMrXdXtEXNg77rqsguWCrJD35UlA6mDxsEdnkiJQx9de80ndRMBTEEGwG/IbtoSUP4YA+jNL5E5JiryM/qq7CbLOIJW1ese8qpQL MIME-Version: 1.0 X-Received: by 2002:a05:6e02:803:b0:304:c661:f53 with SMTP id u3-20020a056e02080300b00304c6610f53mr2292911ilm.155.1672295196843; Wed, 28 Dec 2022 22:26:36 -0800 (PST) Date: Wed, 28 Dec 2022 22:26:36 -0800 In-Reply-To: <00000000000033a0120588fac894@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002ae67f05f0f191aa@google.com> Subject: Re: [syzbot] WARNING: locking bug in inet_autobind From: syzbot To: Alexander.Deucher@amd.com, Christian.Koenig@amd.com, David1.Zhou@amd.com, Evan.Quan@amd.com, Felix.Kuehling@amd.com, Harry.Wentland@amd.com, Oak.Zeng@amd.com, Ray.Huang@amd.com, Yong.Zhao@amd.com, airlied@linux.ie, alexander.deucher@amd.com, amd-gfx@lists.freedesktop.org, ast@kernel.org, boqun.feng@gmail.com, bpf@vger.kernel.org, christian.koenig@amd.com, daniel@ffwll.ch, daniel@iogearbox.net, davem@davemloft.net, david1.zhou@amd.com, dri-devel@lists.freedesktop.org, dsahern@kernel.org, edumazet@google.com, evan.quan@amd.com, felix.kuehling@amd.com, gautammenghani201@gmail.com, harry.wentland@amd.com, jakub@cloudflare.com, kafai@fb.com, kuba@kernel.org, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, longman@redhat.com, mingo@redhat.com, netdev@vger.kernel.org, ozeng@amd.com, pabeni@redhat.com, penguin-kernel@I-love.SAKURA.ne.jp, penguin-kernel@i-love.sakura.ne.jp, peterz@infradead.org, ray.huang@amd.com, rex.zhu@amd.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, will@kernel.org, yhs@fb.com, yong.zhao@amd.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 1b929c02afd3 Linux 6.2-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=145c6a68480000 kernel config: https://syzkaller.appspot.com/x/.config?x=2651619a26b4d687 dashboard link: https://syzkaller.appspot.com/bug?extid=94cc2a66fc228b23f360 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13e13e32480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13790f08480000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d1849f1ca322/disk-1b929c02.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/924cb8aa4ada/vmlinux-1b929c02.xz kernel image: https://storage.googleapis.com/syzbot-assets/8c7330dae0a0/bzImage-1b929c02.xz The issue was bisected to: commit c0d9271ecbd891cdeb0fad1edcdd99ee717a655f Author: Yong Zhao Date: Fri Feb 1 23:36:21 2019 +0000 drm/amdgpu: Delete user queue doorbell variables bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1433ece4a00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1633ece4a00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1233ece4a00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+94cc2a66fc228b23f360@syzkaller.appspotmail.com Fixes: c0d9271ecbd8 ("drm/amdgpu: Delete user queue doorbell variables") ------------[ 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: 7280 at kernel/locking/lockdep.c:937 look_up_lock_class+0x97/0x110 kernel/locking/lockdep.c:937 Modules linked in: CPU: 0 PID: 7280 Comm: syz-executor835 Not tainted 6.2.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:look_up_lock_class+0x97/0x110 kernel/locking/lockdep.c:937 Code: 17 48 81 fa e0 e5 f6 8f 74 59 80 3d 5d bc 57 04 00 75 50 48 c7 c7 00 4d 4c 8a 48 89 04 24 c6 05 49 bc 57 04 01 e8 a9 42 b9 ff <0f> 0b 48 8b 04 24 eb 31 9c 5a 80 e6 02 74 95 e8 45 38 02 fa 85 c0 RSP: 0018:ffffc9000b5378b8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffffff91c06a00 RCX: 0000000000000000 RDX: ffff8880292d0000 RSI: ffffffff8166721c RDI: fffff520016a6f09 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000201 R11: 20676e696b6f6f4c R12: 0000000000000000 R13: ffff88802a5820b0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f1fd7a97700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 0000000078ab4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_lock_class+0xbe/0x1120 kernel/locking/lockdep.c:1289 __lock_acquire+0x109/0x56d0 kernel/locking/lockdep.c:4934 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x5f/0xf0 net/core/sock.c:3473 lock_sock include/net/sock.h:1725 [inline] inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:177 inet_send_prepare net/ipv4/af_inet.c:813 [inline] inet_send_prepare+0x325/0x4e0 net/ipv4/af_inet.c:807 inet6_sendmsg+0x43/0xe0 net/ipv6/af_inet6.c:655 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 __sys_sendto+0x23a/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xe1/0x1b0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1fd78538b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1fd7a971f8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f1fd78f0038 RCX: 00007f1fd78538b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f1fd78f0030 R08: 0000000020000100 R09: 000000000000001c R10: 0000000004008000 R11: 0000000000000212 R12: 00007f1fd78f003c R13: 00007f1fd79ffc8f R14: 00007f1fd7a97300 R15: 0000000000022000