From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 9B8FE2248BF for ; Fri, 20 Jun 2025 06:54:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750402479; cv=none; b=mdkRshaLIy1WwcPSXdGvPpUEXgIDyhc7y4cydAHntzccVK6G1ReUFrv3xHKy44yXvJCXaQQ+wSuzph2hd4l4RhLPfF5BFNNlFn6e/nuCXySTFwV/qozxyjWYpIrXSmCsmVbfIKWNA+9wxInzoomcLMNPvWC86XQwa+DPMEIibuI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750402479; c=relaxed/simple; bh=bbfx2n0y2EckyJVmb9QML8jEcSOyZ97DoWA3f1jtCYQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=N2WXn8F3pTmUFtarUWychkTLO2dDfk4eCoCg2czT+wzP2vLUmWj7uMjuDvTSj/brbmqEnlC8S7V7sOZItV8d1CKppRyYJVxtwx18PPW8B4GAWRqB917ZURdKuZJvF/U+UURBO3hNK1xTHrQFIW0cxC5diSLsvj95+OMw6xaO/YQ= 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=209.85.166.200 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-il1-f200.google.com with SMTP id e9e14a558f8ab-3ddce213201so14099125ab.0 for ; Thu, 19 Jun 2025 23:54:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750402477; x=1751007277; 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=Xbaep2FPsBJRGLzNpZF/WZNjNYCjbIrWnRi2iEY4dXs=; b=S7VJO2uO2iclLhL6qt02iDHJrduykfHoofV+9rCFYRkSheuoHl9fLtFQaK3I3GWRX/ 4XTrfYpUjWyHpVxhQVpJwjyAQRklunKnAaKbVqOyCeIlfPtuu6lTITOxOEfVvNqsy85i yzX24LG2ekYfOUNxUljEoA3shlO0gOePD0UhT97sHZg46ThBd11Ze+0jwhdw+I4uhMPa 1Yqjd2R7cTZ5Jg1gIc9oUusgAAPb0RGRc6MPjfzH1VhSfIn+h8yow5+QRGrqhl6V6+Qx KKgieaiBu9TPNPhRPvZDb2fgvHTW4EelQb6b7pfORBg6R1PJOFGryHsMsZ2BscZsIKfT Au3A== X-Gm-Message-State: AOJu0YwSf9QX4wbeGiMSLA1/p3ARIESNYnzL7lXlENciXZ73O+mAMhMG /cm6+bf4w6lZkusigIwck/W3ZI9PVINNQ3qjBHxPpNiM/Pkx50wtZraWGHqlkIK9WMg+uykykAj 4Rp3e1ComtZyNI9LfOEGKpaW+C3++b8KmfuudtlqkMgGWWbMhMUy0BF0FOqg= X-Google-Smtp-Source: AGHT+IFc+2B1yL3DwY/kW42N+wKpI6NG1p1ZrsjcR4BN23xgvlqTelkiwc0de46PoXMpUUpJgQVWE53ury8JfkDE2h5rBxLANTln Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:19cc:b0:3dd:b540:b795 with SMTP id e9e14a558f8ab-3de3954f063mr12322145ab.3.1750402476897; Thu, 19 Jun 2025 23:54:36 -0700 (PDT) Date: Thu, 19 Jun 2025 23:54:36 -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: <685505ac.a00a0220.137b3.0035.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..e67e6ae48e83 100644 --- a/drivers/misc/vmw_vmci/vmci_host.c +++ b/drivers/misc/vmw_vmci/vmci_host.c @@ -398,6 +398,7 @@ static int vmci_host_do_send_datagram(struct vmci_host_dev *vmci_host_dev, kfree(dg); return -EINVAL; } + memset((char*)dg + 27, 0, 4); pr_devel("Datagram dst (handle=0x%x:0x%x) src (handle=0x%x:0x%x), payload (size=%llu bytes)\n", dg->dst.context, dg->dst.resource,