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 3EFB8C433F4 for ; Wed, 29 Aug 2018 10:00:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D4AB12086A for ; Wed, 29 Aug 2018 10:00:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D4AB12086A 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 S1727803AbeH2N4K (ORCPT ); Wed, 29 Aug 2018 09:56:10 -0400 Received: from mail-it0-f69.google.com ([209.85.214.69]:59490 "EHLO mail-it0-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727190AbeH2N4K (ORCPT ); Wed, 29 Aug 2018 09:56:10 -0400 Received: by mail-it0-f69.google.com with SMTP id a10-v6so4415405itc.9 for ; Wed, 29 Aug 2018 03:00:03 -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=vyqBAD9tnzC/WJ7apqYN0n88vF5fj0OayIheYaOjyAk=; b=i1yJD6tmwfCGWfrbrhCNqIhw1qAccBarqgkRNkhZA2ZjSvs9jSgAjcK+Xd9xbt8s61 iTlkq1mrNsu7RlTVIHq7IzQXIhovruG8hE4TRfoZPUOx5bBkpPbYfHKjdODK0b2babGr /4vQDAyHnrDjeFaqR/fBjxiRwsb1LGAqcPCPb46GJUBqxBcwLjtcBPn2Ivhiims1g++M JiDlrDmjcJcLzn4lEr5/Mp4/+OTpMXyI9q6w5OgheV7xZuX7S5AuatcustqFiQTpxD4c w5efwxOXuLTUm41ETPghCY/lGQok0/UXzltZ55wFvjkJfBoNX7cH4C13J7G8hqGP71qk lFYQ== X-Gm-Message-State: APzg51CEzzTjSN4Xu24gQveRWI48evDFFxB9pEmOlad/4SMhvgNxTx2f oYQG1YE96tZIJY1mObbtSZfG0ZlCBguJgc1Ocf7MCevZwM8G X-Google-Smtp-Source: ANB0VdbjA57vpTpxCbrGBjjqOaeJLQd6DG1n1quEybT4dDstQbPNZSWxxzAWd0fuk9r8AFoM3v5bXsO/0Qkaq+x1vOGy1Xqgqygr MIME-Version: 1.0 X-Received: by 2002:a24:74cd:: with SMTP id o196-v6mr2431542itc.46.1535536802566; Wed, 29 Aug 2018 03:00:02 -0700 (PDT) Date: Wed, 29 Aug 2018 03:00:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a819440574900515@google.com> Subject: general protection fault in kvm_pv_send_ipi From: syzbot To: hpa@zytor.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, rkrcmar@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.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: 051935978432 Merge branch 'for-4.19' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15561712400000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b576e333ca31bb2 dashboard link: https://syzkaller.appspot.com/bug?extid=86c0a866f80d88349f1f compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=137d861e400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+86c0a866f80d88349f1f@syzkaller.appspotmail.com IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 8021q: adding VLAN 0 to HW filter on device team0 L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. 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: 0 PID: 4743 Comm: syz-executor0 Not tainted 4.18.0+ #207 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 arch/x86/kvm/lapic.c:582 Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 48 0d 64 00 8b 85 b0 fe ff ff 44 01 e0 48 98 49 8d bc c7 18 02 00 00 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ed 03 00 00 49 8b 84 c7 18 02 00 00 48 8d b8 RSP: 0018:ffff8801d8bff028 EFLAGS: 00010206 RAX: 000000000000002f RBX: ffff8801d8bff190 RCX: ffffffff8118b074 RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 RBP: ffff8801d8bff1b8 R08: ffff8801d8952640 R09: ffffed003b6046d6 R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f R13: ffff8801d8bff110 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000fc0940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001bed89000 CR4: 00000000001426f0 Call Trace: kvm_emulate_hypercall+0x9d7/0xea0 arch/x86/kvm/x86.c:6838 handle_vmcall+0x15/0x20 arch/x86/kvm/vmx.c:7478 vmx_handle_exit+0x2dd/0x1760 arch/x86/kvm/vmx.c:10115 vcpu_enter_guest+0x143c/0x61a0 arch/x86/kvm/x86.c:7630 vcpu_run arch/x86/kvm/x86.c:7693 [inline] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 arch/x86/kvm/x86.c:7870 kvm_vcpu_ioctl+0x7b8/0x1280 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff3ceb8998 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000fc0914 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cedf0 R14: 00000000004c54c9 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace c38044fa919274d9 ]--- RIP: 0010:kvm_pv_send_ipi+0x582/0xaf0 arch/x86/kvm/lapic.c:582 Code: e0 07 83 c0 01 88 85 97 fe ff ff e8 48 0d 64 00 8b 85 b0 fe ff ff 44 01 e0 48 98 49 8d bc c7 18 02 00 00 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ed 03 00 00 49 8b 84 c7 18 02 00 00 48 8d b8 RSP: 0018:ffff8801d8bff028 EFLAGS: 00010206 RAX: 000000000000002f RBX: ffff8801d8bff190 RCX: ffffffff8118b074 RDX: 0000000000000072 RSI: ffffffff8118b0b8 RDI: 0000000000000390 RBP: ffff8801d8bff1b8 R08: ffff8801d8952640 R09: ffffed003b6046d6 R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 000000000000000f R13: ffff8801d8bff110 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000fc0940(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001bed89000 CR4: 00000000001426f0 --- 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. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches