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 BCBC7C4332F for ; Wed, 13 Dec 2023 18:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379226AbjLMSxT (ORCPT ); Wed, 13 Dec 2023 13:53:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229671AbjLMSxR (ORCPT ); Wed, 13 Dec 2023 13:53:17 -0500 Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 639D2B2 for ; Wed, 13 Dec 2023 10:53:23 -0800 (PST) Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-1d30efd624fso18556265ad.0 for ; Wed, 13 Dec 2023 10:53:23 -0800 (PST) X-Google-DKIM-Signature: v=1; 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Wed, 13 Dec 2023 10:53:22 -0800 (PST) Date: Wed, 13 Dec 2023 10:53:22 -0800 In-Reply-To: <0000000000004f4579060c68431b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000703582060c68aeab@google.com> Subject: Re: [syzbot] [mptcp?] WARNING in mptcp_check_listen_stop From: syzbot To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, martineau@kernel.org, matttbe@kernel.org, mptcp@lists.linux.dev, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 2513974cc3e1 Merge branch 'stmmac-bug-fixes' git tree: net console+strace: https://syzkaller.appspot.com/x/log.txt?x=116337fae80000 kernel config: https://syzkaller.appspot.com/x/.config?x=b50bd31249191be8 dashboard link: https://syzkaller.appspot.com/bug?extid=5a01c3a666e726bc8752 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1119061ee80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=110ca006e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fbf7f04433a8/disk-2513974c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f839967d18d6/vmlinux-2513974c.xz kernel image: https://storage.googleapis.com/syzbot-assets/10f6c15a1f15/bzImage-2513974c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5a01c3a666e726bc8752@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5075 at net/mptcp/protocol.c:2999 mptcp_check_listen_stop.part.0+0x17b/0x240 net/mptcp/protocol.c:2999 Modules linked in: CPU: 0 PID: 5075 Comm: syz-executor686 Not tainted 6.7.0-rc4-syzkaller-00167-g2513974cc3e1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:mptcp_check_listen_stop.part.0+0x17b/0x240 net/mptcp/protocol.c:2999 Code: 00 00 00 0f b6 45 12 88 44 24 20 44 0f b6 6c 24 20 bf 0a 00 00 00 44 89 ee e8 c1 66 24 f7 41 80 fd 0a 74 2b e8 86 6b 24 f7 90 <0f> 0b 90 e8 7d 6b 24 f7 48 b8 00 00 00 00 00 fc ff df 49 c7 04 04 RSP: 0018:ffffc900039efb50 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880187b8000 RCX: ffffffff8a63221f RDX: ffff8880137a0000 RSI: ffffffff8a63222a RDI: 0000000000000001 RBP: ffff888018b30000 R08: 0000000000000001 R09: 000000000000000a R10: 0000000000000007 R11: 0000000000000002 R12: 1ffff9200073df6a R13: 0000000000000007 R14: ffff8880187b8012 R15: 000000000000000a FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ccb1dd0f0 CR3: 000000000cd77000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mptcp_check_listen_stop net/mptcp/protocol.c:3032 [inline] __mptcp_close+0x888/0xa10 net/mptcp/protocol.c:3020 mptcp_close+0x28/0xf0 net/mptcp/protocol.c:3087 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:485 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1419 __fput+0x270/0xbb0 fs/file_table.c:394 task_work_run+0x14d/0x240 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa92/0x2ae0 kernel/exit.c:871 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8ccb161d79 Code: Unable to access opcode bytes at 0x7f8ccb161d4f. RSP: 002b:00007ffce6b9dbd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8ccb161d79 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007f8ccb1dc290 R08: ffffffffffffffb8 R09: 00007ffce6b9ddf8 R10: 00007ffce6b9ddf8 R11: 0000000000000246 R12: 00007f8ccb1dc290 R13: 0000000000000000 R14: 00007f8ccb1dcce0 R15: 00007f8ccb133b40 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.