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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 5C213C433DF for ; Fri, 3 Jul 2020 23:31:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A6BE20724 for ; Fri, 3 Jul 2020 23:31:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726830AbgGCXbY (ORCPT ); Fri, 3 Jul 2020 19:31:24 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:50877 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726759AbgGCXbX (ORCPT ); Fri, 3 Jul 2020 19:31:23 -0400 Received: by mail-il1-f200.google.com with SMTP id l17so22905661ilj.17 for ; Fri, 03 Jul 2020 16:31:22 -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=H0iGMpy4exjQVL4rDbP48TGrJhUE2zdneUofNpOKNJo=; b=D/0P3BB8JVXfI4vUJH01M7fC+MNGmZVCVWhc8LmyvRqoVembsR6BvcvxTx6AW4jJZH kqhDNEButmmx1UMJBwPBMfpD3zhlvnEjdL7PfoVWY+62873FeDCl8j2zTKcwvHpyud+4 aDVsXod5qSY1lfXH6b0kyHzfuKhJJu0HKvO3hfexzD0+yH1sH55Np4zrX98mKyprTL/S rcTMm6jaFqbk5pATKsnutYD0yl2Tl42R2cNLDhH9rm9AB/PC5L+b9fqcc44UXKexTak4 pf56/LLAJJJzV/pd1lqhVLc9N2cgM7fNxahUnOMTLmYZi4mHCXnZ4EsYgkoiAed8XFlI jskg== X-Gm-Message-State: AOAM532dtQ4EuBHhvnj09eSxsggFSANLKAvbdRWMJhU0d4NxP/xxZOut i3BIT6CbEkXIX4JVzDNIcs6ecSCvnCnwUqaAE0yTSF1Alo7g X-Google-Smtp-Source: ABdhPJwgp0BiqIyuN6PjAHbTrpNVwKpT0IHdyDfLXfIrqnoHWXq5bT1Z3SZQTUTpFNsrg+dyNeHgiiehR2y/e/mITjWfO/hJ7OkG MIME-Version: 1.0 X-Received: by 2002:a92:c7c3:: with SMTP id g3mr20035625ilk.164.1593819082292; Fri, 03 Jul 2020 16:31:22 -0700 (PDT) Date: Fri, 03 Jul 2020 16:31:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003c861205a991ec2c@google.com> Subject: kernel BUG at net/rxrpc/recvmsg.c:LINE! From: syzbot To: davem@davemloft.net, dhowells@redhat.com, kuba@kernel.org, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, netdev@vger.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: aab20039 Add linux-next specific files for 20200701 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17a00a5b100000 kernel config: https://syzkaller.appspot.com/x/.config?x=739f6fbf326049f4 dashboard link: https://syzkaller.appspot.com/bug?extid=b54969381df354936d96 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17ee0fe5100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12ea774b100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+b54969381df354936d96@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at net/rxrpc/recvmsg.c:605! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6856 Comm: syz-executor134 Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rxrpc_recvmsg+0x18ab/0x1a03 net/rxrpc/recvmsg.c:605 Code: 89 e7 e8 58 39 6b fa e9 eb fc ff ff e8 4e 39 6b fa e9 33 ef ff ff 48 8b 7c 24 10 e8 3f 39 6b fa e9 dc ee ff ff e8 35 a4 2b fa <0f> 0b 48 8b 7c 24 10 e8 29 39 6b fa e9 76 ee ff ff 48 89 ef e8 0c RSP: 0018:ffffc90001637858 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a182c278 RCX: ffffffff874835d7 RDX: ffff888096f4c000 RSI: ffffffff8748473b RDI: 0000000000000001 RBP: ffff888096ffe740 R08: 0000000000000000 R09: ffff8880a182c327 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880a182c080 R14: 0000000000000000 R15: ffff8880a182c320 FS: 00007f23bbcf5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006da0f0 CR3: 000000009ec2f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_recvmsg_nosec net/socket.c:886 [inline] sock_recvmsg net/socket.c:904 [inline] sock_recvmsg net/socket.c:900 [inline] ____sys_recvmsg+0x2c4/0x640 net/socket.c:2575 ___sys_recvmsg+0x127/0x200 net/socket.c:2617 do_recvmmsg+0x24d/0x6d0 net/socket.c:2715 __sys_recvmmsg net/socket.c:2794 [inline] __do_sys_recvmmsg net/socket.c:2817 [inline] __se_sys_recvmmsg net/socket.c:2810 [inline] __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2810 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x446899 Code: Bad RIP value. RSP: 002b:00007f23bbcf4d98 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446899 RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c R13: 0000000000000007 R14: 0000000100000110 R15: 0000000000000018 Modules linked in: ---[ end trace abf499f6a2f7b5ae ]--- RIP: 0010:rxrpc_recvmsg+0x18ab/0x1a03 net/rxrpc/recvmsg.c:605 Code: 89 e7 e8 58 39 6b fa e9 eb fc ff ff e8 4e 39 6b fa e9 33 ef ff ff 48 8b 7c 24 10 e8 3f 39 6b fa e9 dc ee ff ff e8 35 a4 2b fa <0f> 0b 48 8b 7c 24 10 e8 29 39 6b fa e9 76 ee ff ff 48 89 ef e8 0c RSP: 0018:ffffc90001637858 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a182c278 RCX: ffffffff874835d7 RDX: ffff888096f4c000 RSI: ffffffff8748473b RDI: 0000000000000001 RBP: ffff888096ffe740 R08: 0000000000000000 R09: ffff8880a182c327 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880a182c080 R14: 0000000000000000 R15: ffff8880a182c320 FS: 00007f23bbcf5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006da0f0 CR3: 000000009ec2f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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