From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751113AbeDOFCD (ORCPT ); Sun, 15 Apr 2018 01:02:03 -0400 Received: from mail-it0-f72.google.com ([209.85.214.72]:44921 "EHLO mail-it0-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750773AbeDOFCC (ORCPT ); Sun, 15 Apr 2018 01:02:02 -0400 X-Google-Smtp-Source: AIpwx4/3beUDHPPoHOZDqLD4PSDts5oiKJZDp5uS9zfxrQrp4LGza8uro5IBu5vdTxQdoLrO8OTEl+XD1Mq8PB7Bf+zdEQ4eq7QD MIME-Version: 1.0 Date: Sat, 14 Apr 2018 22:02:01 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <001a1142766c7793080569dc017b@google.com> Subject: BUG: unable to handle kernel paging request in corrupted From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id w3F52982014519 Hello, syzbot hit the following crash on upstream commit c18bb396d3d261ebbb4efbc05129c5d354c541e4 (Tue Apr 10 00:04:10 2018 +0000) Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=bb6ed94ce15c5cd0be00 syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=6361086471176192 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5146710238035968 Kernel config: https://syzkaller.appspot.com/x/.config?id=-1223000601505858474 compiler: gcc (GCC) 8.0.1 20180301 (experimental) IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+bb6ed94ce15c5cd0be00@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 BUG: unable to handle kernel paging request at 0000000000005b63 PGD 1b67b2067 P4D 1b67b2067 PUD 1b67b3067 PMD 0 Oops: 0002 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4510 Comm: syz-executor5 Not tainted 4.16.0+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== BUG: KASAN: out-of-bounds in vsnprintf+0x1a3b/0x1b40 lib/vsprintf.c:2315 Read of size 8 at addr -02 � ���e �6 � a by task syz-executor5/4510 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#2] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4510 Comm: syz-executor5 Not tainted 4.16.0+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: b08e6540:die_lock+0x0/0x4 RSP: b08e6568:ffffffff81b2a8f1 EFLAGS: ffff8801b08e61e8 ORIG_RAX: ffffed003611cc58 RAX: 1ffffffff10842bc RBX: ffff8801db021849 RCX: ffffffff874b04e3 RDX: 0000000000000000 RSI: ffffffff874b02f9 RDI: 0000000000000001 RBP: ffff8801b08e6568 R08: ffff8801c322e040 R09: ffffed003b6042bc R10: ffffed003b6042bc R11: ffff8801db0215e3 R12: ffffffff884215e0 R13: ffffed003611cc58 R14: ffffffff898d54ec R15: ffff8801b08e6540 FS: 00007ff89fb7d700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000005b63 CR3: 00000001b67b1000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00 <01> 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RIP: die_lock+0x0/0x4 RSP: ffffffff81b2a8f1 ---[ end trace 4c7524c29b994875 ]--- --- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@googlegroups.com. syzbot will keep track of this bug report. If you forgot to add the Reported-by tag, once the fix for this bug is merged into any tree, please reply to this email with: #syz fix: exact-commit-title If you want to test a patch for this bug, please reply with: #syz test: git://repo/address.git branch and provide the patch inline or as an attachment. To mark this as a duplicate of another syzbot report, please reply with: #syz dup: exact-subject-of-another-report If it's a one-off invalid bug report, please reply with: #syz invalid Note: if the crash happens again, it will cause creation of a new bug report. Note: all commands must start from beginning of the line in the email body.