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, 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 DFE40C76188 for ; Fri, 19 Jul 2019 07:28:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C26E021849 for ; Fri, 19 Jul 2019 07:28:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727373AbfGSH2H (ORCPT ); Fri, 19 Jul 2019 03:28:07 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:56929 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726036AbfGSH2G (ORCPT ); Fri, 19 Jul 2019 03:28:06 -0400 Received: by mail-io1-f69.google.com with SMTP id u25so33460270iol.23 for ; Fri, 19 Jul 2019 00:28:06 -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:message-id:subject:from:to; bh=ZOKptcEQOKWGsH6kGRMFGwq91Xnv2C9B1wmV09hcJ5c=; b=kSBXwKQ8fK4fEzD28DGh7bKcMW5h554PDzPPGpyaBe6NCgrprla/ozsBd7lDEt3X44 7JH2FUAgv1QpAwjzP5ZJqrzLOQl6szWejWZXGJcUJdtzqWDoZniSJgXs8pqEzelm0AYB TRn1l3TBHe37BCTnq2yHUw2xlOICxytVINTZfADehesRvahxMCDXPAoxSBSjnq9uh6xq cUm6HapCtVr0ghRwNc4ApjsB43ip71BQ6rCGDwnEHR/Kv0nWBbPnAsbp/9JskUx+ShPD vJFQcQeQmIrRz1brhdkzqUNlQH5ZW4BWDEmohJmgP1KhkkIVVmXTC2G1XSRDhZLxEeiK V+tQ== X-Gm-Message-State: APjAAAVTgnBochPQknn2QYnOzMXO5EQAlGvkPJe8vtZ7MKQsjEwG7b5t enSYB0GrrwVoCwlz5xdyoR86mBkWqB1Hxyb1B0lDiL9z7SWV X-Google-Smtp-Source: APXvYqwq1aitWQEim6lQXQr33Kk51C3EOokbRynQEU6MrgfMrNRrXpweFrRMsyfcmQvBV6/b6gCQupDYuZMxFC/ee0R0bXMv0cj+ MIME-Version: 1.0 X-Received: by 2002:a5d:9e48:: with SMTP id i8mr46417366ioi.51.1563521285924; Fri, 19 Jul 2019 00:28:05 -0700 (PDT) Date: Fri, 19 Jul 2019 00:28:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d8b010058e03aaf8@google.com> Subject: BUG: unable to handle kernel paging request in corrupted (2) From: syzbot To: 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 Hello, syzbot found the following crash on: HEAD commit: 49d05fe2 ipv6: rt6_check should return NULL if 'from' is N.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=104b5f70600000 kernel config: https://syzkaller.appspot.com/x/.config?x=87305c3ca9c25c70 dashboard link: https://syzkaller.appspot.com/bug?extid=08b7a2c58acdfa12c82d compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=143a78f4600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+08b7a2c58acdfa12c82d@syzkaller.appspotmail.com kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access BUG: unable to handle page fault for address: 00000000ffffffff #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 9ad32067 P4D 9ad32067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9920 Comm: syz-executor.1 Not tainted 5.2.0+ #91 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page BUG: kernel NULL pointer dereference, address: 0000000000000002 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 9ad32067 P4D 9ad32067 PUD 9ad33067 PMD 0 Oops: 0010 [#2] PREEMPT SMP KASAN CPU: 0 PID: 9920 Comm: syz-executor.1 Not tainted 5.2.0+ #91 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x2 Code: Bad RIP value. RSP: 0000:ffff888092932a20 EFLAGS: 00010086 RAX: 000000000000002d RBX: ffff888092932a40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c1016 RDI: ffffed1012526536 RBP: ffffffff81724d28 R08: 000000000000002d R09: ffffed1015d044fa R10: ffffed1015d044f9 R11: ffff8880ae8227cf R12: ffffffff81b3e334 R13: 0000000000000010 R14: 0000000000000000 R15: 1ffff1101252654b FS: 000055555572a940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd8 CR3: 000000009c4d1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: --- 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