From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list.codeweavrs.com (list.codeweavers.com [4.36.192.163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7CA2438026; Mon, 20 Jul 2026 17:35:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=4.36.192.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784568954; cv=none; b=OiXXmW6KR7QhYqVvj4SnvndW4R3cjhw3xGJM1QGGFTXabOKOt5SWBwu+RQrTmdQih7wyv2q5R9Fe7RGIpJXoK5wLhbWKiHoNk16G5F5UKzFD+k6KTyYAvJCSqX0mb5Wjqf5uq0flaYECdhJJ7pP2lIcvE78b+IeUjUgZ0neziL0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784568954; c=relaxed/simple; bh=syfQgoDuHaZrDYKHpmrAqG01+IvjiRi6SEgNM2+X1oM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=K6l++if2EFEa59DoG7joZKfIqxN2DbCH2lLQC7RSGEZSUQeMdgLbA+Ysyy5CeqcXtGZOWy9q79MzLcVfYtNtrIs4wEge8W8oYn3LF9+pzozh6aWGZJC7b4qXjwi+m9ZWLrQCj/MW3p0QscOmSeUZlyqOAWZ2EmbvGlRJDDj/i3A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=codeweavers.com; spf=pass smtp.mailfrom=codeweavers.com; dkim=pass (2048-bit key) header.d=list.codeweavers.com header.i=@list.codeweavers.com header.b=V+bCGd9P; arc=none smtp.client-ip=4.36.192.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=codeweavers.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=codeweavers.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=list.codeweavers.com header.i=@list.codeweavers.com header.b="V+bCGd9P" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=list.codeweavers.com; s=list; h=Content-Transfer-Encoding:Content-Type: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=cGytKmpTZSgV/TsaLNwpn0WgDkhwBsVUwPMmrW//LJk=; b=V+bCGd9PywyXJaJMJPM1goAVDN E6/6Avy1QtB9EGOk93CfsN0Bc7VWp7BPvA2F5RFQKkeEV3mDjYut1xTnDe1+Ujmz5L4TaYhyeiiLW 18ZzDdfGrcAhT/wWnj3Xi4ggNlsVT630cZsEehoEW6rAN0fRBvLfMvkn7BvPYltLNd0pYt0hfvQSN rX+IAvhutkAIZpBjkAJLvIIy+R/8iXjMu9FyEIKc/QI3nbg0c0SsbJm128S/tyYDRK+Y6Kvd8a4KA JqMXeRvg01Bp9UgRJYpeTh+uMWwnIFDNS8OOBpsY6mXVKnbBELpLpXznm70UBa+d5DRVpSNXAJpOM tpc2kBAA==; Received: from cw137ip160.mn.codeweavers.com ([10.69.137.160] helo=camazotz.mn.codeweavers.com) by list.codeweavrs.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wlrcg-001Fmy-07; Mon, 20 Jul 2026 12:17:46 -0500 From: Elizabeth Figura To: Arnd Bergmann , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, wine-devel@list.winehq.org, linux-kselftest@vger.kernel.org, =?UTF-8?q?Iv=C3=A1n=20Ezequiel=20Rodriguez?= , Elizabeth Figura Subject: [PATCH 4/4] ntsync: reject wait ioctls with zero owner Date: Mon, 20 Jul 2026 12:17:40 -0500 Message-ID: <20260720171740.447035-5-zfigura@codeweavers.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260720171740.447035-1-zfigura@codeweavers.com> References: <20260720171740.447035-1-zfigura@codeweavers.com> Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Iván Ezequiel Rodriguez setup_wait() already validates pad and flags but not owner, while Documentation/userspace-api/ntsync.rst requires EINVAL when owner is zero. Reject early before queueing waiters. Signed-off-by: Iván Ezequiel Rodriguez Reviewed-by: Elizabeth Figura Signed-off-by: Elizabeth Figura --- drivers/misc/ntsync.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c index 02c9d1192812..4a805919bb0c 100644 --- a/drivers/misc/ntsync.c +++ b/drivers/misc/ntsync.c @@ -875,6 +875,9 @@ static int setup_wait(struct ntsync_device *dev, if (args->pad || (args->flags & ~NTSYNC_WAIT_REALTIME)) return -EINVAL; + if (!args->owner) + return -EINVAL; + if (size >= sizeof(fds)) return -EINVAL; -- 2.53.0