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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1872C433EF for ; Mon, 22 Nov 2021 22:14:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239975AbhKVWRk (ORCPT ); Mon, 22 Nov 2021 17:17:40 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:53153 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239945AbhKVWRj (ORCPT ); Mon, 22 Nov 2021 17:17:39 -0500 Received: by mail-io1-f71.google.com with SMTP id k12-20020a0566022a4c00b005ebe737d989so12699899iov.19 for ; Mon, 22 Nov 2021 14:14:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=Kz/44B8X7NBFkqbuicYsbZq4Sql/M2zFV0XxqztyEos=; b=eTV7KN3eurtR0L+Ass7o8J+TlYgw5V9Akc5ga02X8g2QtauQNae2/mWUpfJY5steC9 RrIcbif0jyker5EOPJ7Jc0qFbivV/7YL3lPQfRz3ebbwuEIV4Me4jziHYSyKq07M5xm6 N2mnNUyI1lTTxII9n2xBj1CZ+B3pA0uwQzQ9B4Cyq3DdG9h768xAQhkdkLj/2Wz1DXDi AUDxqXTb7bEvzbOklbtbkV59fVG/OaJBFj3ewS/kOroCLQysoeSWpbq/PuzVwshuGkuh UiVSfi34fXcFYrzDk9SkUmyBY/sSgfB+uKhf0KEBk+Q1Bhw066WHwDounocp3pwY1v+c f7jg== X-Gm-Message-State: AOAM531ZwaPxKe4Daf9TKWcgGaUO9RzRd2R4l4Dav3GDEArmdaJJBWuv ZxE/yu2Y9hr0x2m+4ZMvxjTJWAfYJJzHiB3Usfh305Ptxo7T X-Google-Smtp-Source: ABdhPJwtWfap1cILHXA8iY6bhxmVBc5DuHMjm1DNzMmWeuU1dmiVBqd5gR4zDlKDr42C/cujKKfJcxy+RDqnjoVt+wBxmFTK/rtM MIME-Version: 1.0 X-Received: by 2002:a05:6638:3a4:: with SMTP id z4mr521453jap.76.1637619271749; Mon, 22 Nov 2021 14:14:31 -0800 (PST) Date: Mon, 22 Nov 2021 14:14:31 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f854ec05d167f227@google.com> Subject: [syzbot] kernel BUG in kvm_read_guest_offset_cached From: syzbot To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 4c388a8e740d Merge tag 'zstd-for-linus-5.16-rc1' of git://.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=171ff6eeb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6d3b8fd1977c1e73 dashboard link: https://syzkaller.appspot.com/bug?extid=7b7db8bb4db6fd5e157b compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7b7db8bb4db6fd5e157b@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at arch/x86/kvm/../../../virt/kvm/kvm_main.c:2955! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 27639 Comm: syz-executor.0 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvm_read_guest_offset_cached+0x3aa/0x440 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2955 Code: 00 48 c7 c2 c0 08 a2 89 be 0b 03 00 00 48 c7 c7 60 0d a2 89 c6 05 71 f9 73 0c 01 e8 62 19 f8 07 e9 d6 fc ff ff e8 36 1b 6f 00 <0f> 0b e8 2f 1b 6f 00 48 8b 74 24 10 4c 89 ef 4c 89 e1 48 8b 54 24 RSP: 0018:ffffc9000589fa18 EFLAGS: 00010216 RAX: 0000000000003b75 RBX: ffff8880722ba798 RCX: ffffc90002b94000 RDX: 0000000000040000 RSI: ffffffff81087cda RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000004 R09: ffffc900049dbf53 R10: ffffffff81087a0f R11: 0000000000000002 R12: 0000000000000004 R13: ffffc900049d1000 R14: 0000000000000000 R15: ffff8880886c0000 FS: 00007fd7a562f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000200 CR3: 0000000038e62000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000c0fe DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: handle_vmptrld arch/x86/kvm/vmx/nested.c:5304 [inline] handle_vmptrld+0x39d/0x820 arch/x86/kvm/vmx/nested.c:5266 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6012 [inline] vmx_handle_exit+0x4f7/0x18a0 arch/x86/kvm/vmx/vmx.c:6029 vcpu_enter_guest+0x2b41/0x4440 arch/x86/kvm/x86.c:9941 vcpu_run arch/x86/kvm/x86.c:10008 [inline] kvm_arch_vcpu_ioctl_run+0x4fc/0x21a0 arch/x86/kvm/x86.c:10203 kvm_vcpu_ioctl+0x570/0xf30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3709 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fd7a80b9ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd7a562f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd7a81ccf60 RCX: 00007fd7a80b9ae9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 RBP: 00007fd7a8113f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd7a8700b2f R14: 00007fd7a562f300 R15: 0000000000022000 Modules linked in: ---[ end trace 05ad48ac8b464d71 ]--- RIP: 0010:kvm_read_guest_offset_cached+0x3aa/0x440 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2955 Code: 00 48 c7 c2 c0 08 a2 89 be 0b 03 00 00 48 c7 c7 60 0d a2 89 c6 05 71 f9 73 0c 01 e8 62 19 f8 07 e9 d6 fc ff ff e8 36 1b 6f 00 <0f> 0b e8 2f 1b 6f 00 48 8b 74 24 10 4c 89 ef 4c 89 e1 48 8b 54 24 RSP: 0018:ffffc9000589fa18 EFLAGS: 00010216 RAX: 0000000000003b75 RBX: ffff8880722ba798 RCX: ffffc90002b94000 RDX: 0000000000040000 RSI: ffffffff81087cda RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000004 R09: ffffc900049dbf53 R10: ffffffff81087a0f R11: 0000000000000002 R12: 0000000000000004 R13: ffffc900049d1000 R14: 0000000000000000 R15: ffff8880886c0000 FS: 00007fd7a562f700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18994c5000 CR3: 0000000038e62000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000003000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.