From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DB06510E5 for ; Mon, 23 Jun 2025 03:03:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750647799; cv=none; b=ZJRX7CCHs2uJdgasrldnn5bhCFifRguM9JETwPZCNUfLwMUOqi1+kjwoU6qvsYwSglspKCgi0KhOUGbROY8xDu9hvgV1evC3/qf53V54eZ92PkLM78yf8R5FDjDOyXBb1qqH1r1n+PpUMXESED6E9nrbkcb3YW5KMC+aRWOq0To= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750647799; c=relaxed/simple; bh=8gllXfLh7lgCOf34QhCdyM4oB/zUJVGZ75Pc+EGijX0=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=kN2CCePctGqRsFevdlgB14+NDXpsNAXrne6sPB8e7kyCQ4hivGtXFTSBkE/2UM+nf58KymmEQATEeAGOL6701yUWGZONH+zNpEKJJE5RFSY9SkgyOY39nSS7supdGPC99BjlC5PGPYsQ92BPeLzFgiVov8nQYfTMvcvJBlVBuRc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-876074516b3so676274839f.1 for ; Sun, 22 Jun 2025 20:03:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750647796; x=1751252596; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=dh7b9Kyw6JTl7BCsxPiu/otbv9yfk99lceVb6gP5cA4=; b=v8O2XJBu5osZL3MhJJ8ghNPOrUiE3VLY+fty81qHmL1GLZFn6HXU2V+mUkaMU/yX5k Vgs9QsHxw1Opo2JR4ubPXWUQwXbVA0lDnIT8KVhrJG38X4gfzddkiXOZn9Td4XNd9J18 hv4hfwm6z6HvYV2bkOrEj7v1XeFQan56evK9W1ROQ9ZKGLD73RpCQl/fDVUe8UE+NlDP Rp34txLNp57m6ykRjwrCNTKEPqSgerwhOlUcgkROh7bjuL3GQ3aMArPzW/GZOOut71lr b42EJhewhRDAyIjwVOm78dw8zGE4dNfkV0/88UfGeO3r6Jt2WtIcZmtwMHAMTT+rX53v gm0w== X-Gm-Message-State: AOJu0Yx5c9swLUNZv6RyeWX+P8YVtVjMZnjyfs3MwkvCWrDOOQSUgkcT iVPTjxhU5bUcxD6Y1qBA9vj79WSbw0198vgDzupRlZbUV3zaqhd1amRr1l8Tsi4EfTs+bdq7she 6zDJ83CA3GWymdzs7Zl019sJl0cGi7RjWZ62xasR7ryJa2d/v8ltzgl+8KGI= X-Google-Smtp-Source: AGHT+IH4D0x0SbB3qFPK8Q2l4OzcUHD7hJs3foGMahLYsqcRDEeU2U+ywg8rBRrqPmE1G5gYtnVWYCxw7sJ6I9fsN3GFig/KcPU/ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:194b:b0:3dc:8b2c:4bc7 with SMTP id e9e14a558f8ab-3de38c1ba33mr129770415ab.1.1750647796130; Sun, 22 Jun 2025 20:03:16 -0700 (PDT) Date: Sun, 22 Jun 2025 20:03:16 -0700 In-Reply-To: <6854a3e6.a00a0220.137b3.0022.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6858c3f4.050a0220.d71a0.0000.GAE@google.com> Subject: Re: [syzbot] Re: [syzbot] [kernel?] KMSAN: kernel-infoleak in vmci_host_unlocked_ioctl (3) From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [kernel?] KMSAN: kernel-infoleak in vmci_host_unlocked_ioctl (3) Author: lizhi.xu@windriver.com #syz test diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c index b64944367ac5..4804aa668e47 100644 --- a/drivers/misc/vmw_vmci/vmci_host.c +++ b/drivers/misc/vmw_vmci/vmci_host.c @@ -433,6 +433,9 @@ static int vmci_host_do_receive_datagram(struct vmci_host_dev *vmci_host_dev, recv_info.result = vmci_ctx_dequeue_datagram(vmci_host_dev->context, &size, &dg); + if (!vmci_host_code_active()) + return VMCI_ERROR_UNAVAILABLE; + if (recv_info.result >= VMCI_SUCCESS) { void __user *ubuf = (void __user *)(uintptr_t)recv_info.addr; retval = copy_to_user(ubuf, dg, VMCI_DG_SIZE(dg));