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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 23D0CC3A589 for ; Sun, 18 Aug 2019 18:47:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F329B206C1 for ; Sun, 18 Aug 2019 18:47:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727118AbfHRSrK (ORCPT ); Sun, 18 Aug 2019 14:47:10 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:49507 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726261AbfHRSrH (ORCPT ); Sun, 18 Aug 2019 14:47:07 -0400 Received: by mail-io1-f72.google.com with SMTP id k13so1668764ioh.16 for ; Sun, 18 Aug 2019 11:47:06 -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:in-reply-to:message-id:subject :from:to; bh=zDgZNUFDgGstctQhA5e9B3Yy/pHKkUvS8U2iUc3RWJc=; b=R1V1VTMsB3bX7xJTqo9ezQrjV4v1x2oXBSDPJXQqOvsmIyAGD+sTKxeIGzHgS1Mn63 uED8QCv+I4ybXm2fQyzMg4xPMx8xzuqkievhfe5IMWGrJhaRnJgexZm5Lc/sJcxZA4d7 OYC6LracYC0MaYdtBdoOovbvOWZL2oQ8p61J260TskI7j11tiLQj42vpaNCLoSsC1oTc SY0psp/RsEIzq5K7YhnPn7HLhPAhG/Ojef1Fhuqr/tj9i+TvVqVDhAFCHmM0z/C9CxTb DsRVdr4vqSomHIq1Kxe52RxenhFCznHK36e9dE+tj9OQ38ZqMOw2gI83021jBVjCgN1P IldQ== X-Gm-Message-State: APjAAAVz+fGoCt+6/tJrbySMruwM68I49SosIONxK/rSfOcAbaEKfHL3 QSvson6kWuXpXn+Dnwmry2Sce1e6AXXonFxgvFD9BI7eIF8Z X-Google-Smtp-Source: APXvYqyCe0YYoEWtGbv/2uf8ztOrkSCn1II2bREdkWZ+sft0RqrJ3w9DoWKiuLFFm7detM37UBrYjkFOl1a27HlPGKQpn4X5qwyz MIME-Version: 1.0 X-Received: by 2002:a6b:cd07:: with SMTP id d7mr20708646iog.150.1566154026241; Sun, 18 Aug 2019 11:47:06 -0700 (PDT) Date: Sun, 18 Aug 2019 11:47:06 -0700 In-Reply-To: <0000000000004c2416058c594b30@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000065d943059068a632@google.com> Subject: Re: kernel BUG at net/rxrpc/local_object.c:LINE! From: syzbot To: davem@davemloft.net, dhowells@redhat.com, dvyukov@google.com, ebiggers@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"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: 0c3d3d64 Add linux-next specific files for 20190816 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=108b58f2600000 kernel config: https://syzkaller.appspot.com/x/.config?x=dffdf1e146f941f4 dashboard link: https://syzkaller.appspot.com/bug?extid=1e0edc4b8b7494c28450 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13feb73c600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=127088f2600000 The bug was bisected to: commit 46894a13599a977ac35411b536fb3e0b2feefa95 Author: David Howells Date: Thu Oct 4 08:32:28 2018 +0000 rxrpc: Use IPv4 addresses throught the IPv6 bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=152fabe3a00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=172fabe3a00000 console output: https://syzkaller.appspot.com/x/log.txt?x=132fabe3a00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+1e0edc4b8b7494c28450@syzkaller.appspotmail.com Fixes: 46894a13599a ("rxrpc: Use IPv4 addresses throught the IPv6") rxrpc: Assertion failed ------------[ cut here ]------------ kernel BUG at net/rxrpc/local_object.c:433! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc4-next-20190816 #67 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: krxrpcd rxrpc_local_processor RIP: 0010:rxrpc_local_destroyer net/rxrpc/local_object.c:433 [inline] RIP: 0010:rxrpc_local_processor.cold+0x24/0x29 net/rxrpc/local_object.c:466 Code: df a1 bc fa 0f 0b e8 c4 2b d3 fa 48 c7 c7 e0 24 5b 88 e8 cc a1 bc fa 0f 0b e8 b1 2b d3 fa 48 c7 c7 e0 24 5b 88 e8 b9 a1 bc fa <0f> 0b 90 90 90 55 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 53 48 RSP: 0018:ffff8880a98d7ce8 EFLAGS: 00010282 RAX: 0000000000000017 RBX: ffff88808c90a978 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815bb906 RDI: ffffed101531af8f RBP: ffff8880a98d7d30 R08: 0000000000000017 R09: ffffed1015d060d9 R10: ffffed1015d060d8 R11: ffff8880ae8306c7 R12: ffff88808c90a208 R13: ffff88808dc48648 R14: ffff88808c90a940 R15: ffff8880929faa00 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000049f2b0 CR3: 0000000008e6d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace c65e44ef4b16c854 ]--- RIP: 0010:rxrpc_local_destroyer net/rxrpc/local_object.c:433 [inline] RIP: 0010:rxrpc_local_processor.cold+0x24/0x29 net/rxrpc/local_object.c:466 Code: df a1 bc fa 0f 0b e8 c4 2b d3 fa 48 c7 c7 e0 24 5b 88 e8 cc a1 bc fa 0f 0b e8 b1 2b d3 fa 48 c7 c7 e0 24 5b 88 e8 b9 a1 bc fa <0f> 0b 90 90 90 55 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 53 48 RSP: 0018:ffff8880a98d7ce8 EFLAGS: 00010282 RAX: 0000000000000017 RBX: ffff88808c90a978 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815bb906 RDI: ffffed101531af8f RBP: ffff8880a98d7d30 R08: 0000000000000017 R09: ffffed1015d060d9 R10: ffffed1015d060d8 R11: ffff8880ae8306c7 R12: ffff88808c90a208 R13: ffff88808dc48648 R14: ffff88808c90a940 R15: ffff8880929faa00 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000009b982000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400