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_PASS,URIBL_BLOCKED autolearn=ham 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 ACA60C1B0E3 for ; Wed, 11 Jul 2018 19:57:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 69B4F2146F for ; Wed, 11 Jul 2018 19:57:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 69B4F2146F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387499AbeGKUCz (ORCPT ); Wed, 11 Jul 2018 16:02:55 -0400 Received: from mail-it0-f69.google.com ([209.85.214.69]:38199 "EHLO mail-it0-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726399AbeGKUCz (ORCPT ); Wed, 11 Jul 2018 16:02:55 -0400 Received: by mail-it0-f69.google.com with SMTP id i4-v6so2621577ite.3 for ; Wed, 11 Jul 2018 12:57:02 -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=fZ91f1ZZOCPH9nWCAsDXAufSgB2Hzc62J/ug7jd2Pl8=; b=P9So5o2p4Wb6+2QIgv76c4l1KS/Rmcbj5815DQ9+haoDE1bfyWI1eSBddjZX7njy2s LiK1T/KIXLJRXm6vyh3N5bZZQaj8R/rXDSVUJpXw7fnBhKg7RYoA21SObO/5DRc7pf/e WtIw4cNYCicctn9lBQ5hgtfpJ3UyUbvH9gZUM9poSjzmdxkwJZidsX/dJGcAy+fshlZR pCZZQNLKg5gv1PFZwwSOSzsf6fYE7XRrzEbgc0BsF7c5NdQe+SuFslEWGtFVvPb/yCLY 2ghh0vY6F9DitZ6v9jNp8OeOsG8J0PFrf34ayw37WOPRrAm6Kf3djrQ2vhNVy+l5Dm4j GBsw== X-Gm-Message-State: AOUpUlFOfNNOvIorYzx4y7FXpHSkZlDgndIdwnhcrz2BlweZmOogOsdb nG6frGf0D+6unZUkmWZnwU5ZiZI7Oq26nVcdUjxm+Y1plbE8 X-Google-Smtp-Source: AAOMgpcwLIeFmxiEBBvgF16/EiP9xOQqjm/WrRRhNSHYk0ieuxNQexJyjJv+14vjb6Kpbxh48hF8wsrwCIusWl/xun2NhS0XBWac MIME-Version: 1.0 X-Received: by 2002:a5e:c01a:: with SMTP id u26-v6mr8322iol.69.1531339021881; Wed, 11 Jul 2018 12:57:01 -0700 (PDT) Date: Wed, 11 Jul 2018 12:57:01 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006e1bbe0570bea62e@google.com> Subject: general protection fault in inet_accept From: syzbot To: davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes 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: 0026129c8629 rhashtable: add restart routine in rhashtable.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=10ed430c400000 kernel config: https://syzkaller.appspot.com/x/.config?x=b88de6eac8694da6 dashboard link: https://syzkaller.appspot.com/bug?extid=2e9616288940d15a6476 compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2e9616288940d15a6476@syzkaller.appspotmail.com kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 1 PID: 27 Comm: kworker/1:1 Not tainted 4.18.0-rc3+ #5 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events smc_tcp_listen_work RIP: 0010:inet_accept+0xf2/0x9f0 net/ipv4/af_inet.c:734 Code: 84 d2 74 09 80 fa 03 0f 8e 93 07 00 00 48 8d 78 28 41 c7 46 80 ea ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 94 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff8801d94574b0 EFLAGS: 00010206 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 RDX: dffffc0000000000 RSI: ffffffff86751b46 RDI: 0000000000000028 RBP: ffff8801d9457598 R08: ffff8801d9448700 R09: ffffed00367a0f6f R10: ffffed00367a0f6f R11: ffff8801b3d07b7b R12: ffff8801b3d07ac0 R13: ffff8801d94574f0 R14: ffff8801d9457570 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30220000 CR3: 00000001d711f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kernel_accept+0x136/0x310 net/socket.c:3251 smc_clcsock_accept net/smc/af_smc.c:701 [inline] smc_tcp_listen_work+0x222/0xef0 net/smc/af_smc.c:1114 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x345/0x410 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 0d34e5471cc130cb ]--- RIP: 0010:inet_accept+0xf2/0x9f0 net/ipv4/af_inet.c:734 Code: 84 d2 74 09 80 fa 03 0f 8e 93 07 00 00 48 8d 78 28 41 c7 46 80 ea ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 94 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff8801d94574b0 EFLAGS: 00010206 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 RDX: dffffc0000000000 RSI: ffffffff86751b46 RDI: 0000000000000028 RBP: ffff8801d9457598 R08: ffff8801d9448700 R09: ffffed00367a0f6f R10: ffffed00367a0f6f R11: ffff8801b3d07b7b R12: ffff8801b3d07ac0 R13: ffff8801d94574f0 R14: ffff8801d9457570 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30220000 CR3: 0000000008e6a000 CR4: 00000000001406e0 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#bug-status-tracking for how to communicate with syzbot.