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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 A4E58C432BE for ; Mon, 30 Aug 2021 09:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EB3261039 for ; Mon, 30 Aug 2021 09:34:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235652AbhH3JfV (ORCPT ); Mon, 30 Aug 2021 05:35:21 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:56955 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235073AbhH3JfT (ORCPT ); Mon, 30 Aug 2021 05:35:19 -0400 Received: by mail-il1-f198.google.com with SMTP id v9-20020a92c6c9000000b00226d10082a6so8659579ilm.23 for ; Mon, 30 Aug 2021 02:34:26 -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=T+O67gwiRaVfdJjcJ1aFvYV9X0Yl7JeqENgnYORlL/A=; b=Hd3zypuhv7jGaAmWIB7iP5MRFKr7nYM65rJbbZoqJDvA277zgv4CcyqYZ3zA5NiX+Y 4mxMy/VNCmwdE2LFxpHpTOEMOqIrVcLH2J91Ejc7b3c7DgjvYCHCteTJuGAkBvL91qYW FnRF9V3WffsjHyXmhGQQkO1pl+djQg3sDV+9R1SxLdOWEAbSLU9VsyF+oXMdoHphipFk 9IYgfclQ1JAwlCj86vvdZTGxpRPgyeiipa6dqfQ/xw9TDdwS2gnTdE221otc3Sdpel4e IW/3m3JSoesrnOPTXvuGtbC6d9zTkigMgxdnVbV/27wEJ11X0TUgjBWYNgKanHQbltSn adQw== X-Gm-Message-State: AOAM533fGh4FC5AYiU/OluYtymp/+ndatbYiIWYPMmdIWAbt9M5QbpQ4 QmLrGVts6jjMq4luOftLuyl0/oeBkOTPq+SuaXMicnXsX4MO X-Google-Smtp-Source: ABdhPJxcyU2jINHVL3lxikmSdHU+KGMvG6/+ShL3UkJuOsG7YE+DVD8IvDua3XswKiea1EF/PwMD34VO2kqCZpkeE261MnZ93GEE MIME-Version: 1.0 X-Received: by 2002:a6b:8e50:: with SMTP id q77mr17024476iod.96.1630316065870; Mon, 30 Aug 2021 02:34:25 -0700 (PDT) Date: Mon, 30 Aug 2021 02:34:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000fa5aea05cac3895f@google.com> Subject: [syzbot] WARNING in exception_type From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, jarkko@kernel.org, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sgx@vger.kernel.org, mingo@redhat.com, pbonzini@redhat.com, seanjc@google.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 3f5ad13cb012 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=156f9a4d300000 kernel config: https://syzkaller.appspot.com/x/.config?x=94074b5caf8665c7 dashboard link: https://syzkaller.appspot.com/bug?extid=200c08e88ae818f849ce compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13848dfe300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=136d69e1300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+200c08e88ae818f849ce@syzkaller.appspotmail.com L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8469 at arch/x86/kvm/x86.c:525 exception_type+0x98/0xb0 arch/x86/kvm/x86.c:525 Modules linked in: CPU: 1 PID: 8469 Comm: syz-executor531 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:exception_type+0x98/0xb0 arch/x86/kvm/x86.c:525 Code: 31 ff 45 31 ed 44 89 e6 e8 25 75 69 00 45 85 e4 41 0f 95 c5 45 01 ed e8 d6 6d 69 00 44 89 e8 5b 41 5c 41 5d c3 e8 c8 6d 69 00 <0f> 0b e8 c1 6d 69 00 41 bd 03 00 00 00 5b 44 89 e8 41 5c 41 5d c3 RSP: 0018:ffffc90000f1f8f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000000000a2 RCX: 0000000000000000 RDX: ffff888018461c40 RSI: ffffffff810c3b28 RDI: 0000000000000003 RBP: ffff888020868000 R08: 000000000000001f R09: 00000000000000a2 R10: ffffffff810c3aaa R11: 0000000000000006 R12: 00000000000000a2 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 FS: 000000000179c300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffd362aad8 CR3: 00000000182ef000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: x86_emulate_instruction+0xef6/0x1460 arch/x86/kvm/x86.c:7853 kvm_mmu_page_fault+0x2f0/0x1810 arch/x86/kvm/mmu/mmu.c:5199 handle_ept_misconfig+0xdf/0x3e0 arch/x86/kvm/vmx/vmx.c:5336 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6021 [inline] vmx_handle_exit+0x336/0x1800 arch/x86/kvm/vmx/vmx.c:6038 vcpu_enter_guest+0x2a1c/0x4430 arch/x86/kvm/x86.c:9712 vcpu_run arch/x86/kvm/x86.c:9779 [inline] kvm_arch_vcpu_ioctl_run+0x47d/0x1b20 arch/x86/kvm/x86.c:10010 kvm_vcpu_ioctl+0x49e/0xe50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3652 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 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: 0033:0x441159 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd362c598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 0000000000441159 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 0000000000404c50 R08: 0000000000400488 R09: 0000000000400488 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000404ce0 R13: 0000000000000000 R14: 00000000004ae018 R15: 0000000000400488 --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches