From nobody Mon Apr 6 10:42:01 2026 Received: from mail-wr1-f46.google.com (mail-wr1-f46.google.com [209.85.221.46]) (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 241804014B4 for ; Thu, 19 Mar 2026 20:26:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773951969; cv=none; b=D8wq+fg8pCUD7E7F9qszufk8LMnCQSh84vI4lYvfpcQPlNnSq866ZTi+jeczfTS/qdih0d4HRAAsRga8DHWHilLTzEQAbRz4p98NFnllHcYF4vFklHYfCleGBB+cpsfiy1KONu0IIZSMazlRGZVF/JPVLqxJSG8CxEW9ScTAfdw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773951969; c=relaxed/simple; bh=x0xQqLTzkCRNQUot1j/UYCtbtBAAOsk8jYrEIs7+tYA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UyqxnVx9FYbuStOaxv1eiUNxlAf5GYIYf9oemh72rcfHcdFNfnoJ+dv4Gm8qFCXeq/h6LbJG3yCeAPUktz0du6QokxAGaivvkFFh1bSXzut1n/T5lDhJRwjUFKRpO97BCB7a83NpG7aEcDD5m3yDdX31Dp90sqpIUNbHJhS8hl4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=kYaFFPkz; arc=none smtp.client-ip=209.85.221.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="kYaFFPkz" Received: by mail-wr1-f46.google.com with SMTP id ffacd0b85a97d-439b2965d4bso1015584f8f.2 for ; Thu, 19 Mar 2026 13:26:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1773951965; x=1774556765; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=WDpJy6eUcHO0PuqsrcmnUFgysvSCvcBPbvdavy5mnIc=; b=kYaFFPkzLsm11BsjOcgvhswfSGK/XASDqTtHczFx1AF8Vn9krwciAheoAbRzkYgCbg J2kLCjgfafPyVzmP8LIdH1PQ2KfTW4IojSeMXkbemgFGBhyoIM70Fi2ogPKfkljO0jzc EsSZXNQJlPsTveXyECXdGtoYrYMc+YXwkqljkcI3r3+RCOLNnOU/WtwwPeHP44YML1Y/ CrILTgiXWMVq5oPVOI7g/e/oRlzljOwX9EsY/jG32GbmLxbOuj1MkZ/2A463iZjdECYi V47z3FFQSirr0rlS03PxgcvyaFmQPIZMsioK3t9tPRKJSDmhC+xcTXShO5NnghPo63pU NG+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773951965; x=1774556765; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=WDpJy6eUcHO0PuqsrcmnUFgysvSCvcBPbvdavy5mnIc=; b=AZgjslErxOet8NMa4oW6c4VK7OePhbLfMbxCU6Ak6On7J2m17X2rOiCkfXU/dc6xTF mk/tdudfKRv4Q+9RmCwWFElmNXwBCl8ShH4/bGPbQ4+G9wya8ZwYxMmyGicU2r55CkGp LH6FAm4Tuem0Wbu9mtoQXs16js9UTj/D7G8URSFmoDiW0ojWjqkoDmLrB+mMLhh579wr Ecx2Ksg+U2ysCiJENR17Li5+pgrqAcTKuKpmb7YuZx24EtYygx2IOP4tm7zH7WfPn35q FuHs0BlxLH4uktbfkC76vxlguIjb1jdTgL/7tg2YnRUQMio6fsqojTO0I36/EnkvXzsO HN/Q== X-Gm-Message-State: AOJu0Yx1s4pRuyfzOoLSX2lsRrBlm1fMZN2P5p+02srGztizwB64OF5W l6oXIg/fn7q60OLyb+jFRwnU1zy/AvUL/rviaR6rU0ltcKNRZ8oRFHys X-Gm-Gg: ATEYQzwYRJOSR8aqiv/Q6M3mi8x7DlFJCCorcFrwDDIDAsMv8KHYuCJBY6FH9z3NMEq I2/9Ix4HBNqJWD1Cr9Gf0R41XTzhrWZz9VhOoiNiA5hJ0+UsbIVbu6KBuReKwmo6e79yk/ZRw44 +PW1eW0wQdAURA5v07JPNR3DEY9N3YowSiIvcX51ztxA+OjEuPNcQnHeXgDSqOaCdUWoghfgE9O gXAerNjPp4EwMlGnVu3+/TPzWcMAnljo4/Kx1Hz+giF0kygU/plLfi2g2i59FcERE7QVADQHnm9 azAm66cq27Zr0Ya5S53akfIzpFtUV0I0o5D3nqv9nNN9V3QZpKKsXFECPqM4cAFt587P59UwOS0 QK6IY92pGzJqjk4d7zaJXPIxFdokrT5LB/a8Hq1QwKkishpqUcRbDQe6dbA3kqA51JU+LoUexAG CrEnmQhmRql2bFBAbxz74QG3iSdu6kYttkbY+CfLU7VpoPD8uI X-Received: by 2002:a05:6000:25c7:b0:43b:468e:3d78 with SMTP id ffacd0b85a97d-43b64291a02mr1126082f8f.52.1773951965173; Thu, 19 Mar 2026 13:26:05 -0700 (PDT) Received: from LQ5W56KC4T ([2001:8a0:672f:7800:e0e1:55cd:f0b:b1e5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43b644ae16fsm1347544f8f.8.2026.03.19.13.26.04 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 19 Mar 2026 13:26:04 -0700 (PDT) From: Eric Curtin X-Google-Original-From: Eric Curtin To: linux-hyperv@vger.kernel.org Cc: linux-kernel@vger.kernel.org, iourit@linux.microsoft.com, wei.liu@kernel.org, decui@microsoft.com, haiyangz@microsoft.com Subject: [PATCH 46/55] drivers: hv: dxgkrnl: Fixed the implementation of D3DKMTQueryClockCalibration Date: Thu, 19 Mar 2026 20:25:00 +0000 Message-ID: <20260319202509.63802-47-eric.curtin@docker.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260319202509.63802-1-eric.curtin@docker.com> References: <20260319202509.63802-1-eric.curtin@docker.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Iouri Tarassov The result of a VM bus call was not copied to the user output structure. Signed-off-by: Iouri Tarassov [kms: forward port to 6.6 from 6.1. No code changes made.] Signed-off-by: Kelsey Steele --- drivers/hv/dxgkrnl/dxgvmbus.c | 18 ++++++++++-------- drivers/hv/dxgkrnl/ioctl.c | 5 ----- 2 files changed, 10 insertions(+), 13 deletions(-) diff --git a/drivers/hv/dxgkrnl/dxgvmbus.c b/drivers/hv/dxgkrnl/dxgvmbus.c index 215e2f6648e2..67f55f4bf41d 100644 --- a/drivers/hv/dxgkrnl/dxgvmbus.c +++ b/drivers/hv/dxgkrnl/dxgvmbus.c @@ -1966,14 +1966,16 @@ int dxgvmb_send_query_clock_calibration(struct dxgp= rocess *process, *__user inargs) { struct dxgkvmb_command_queryclockcalibration *command; - struct dxgkvmb_command_queryclockcalibration_return result; + struct dxgkvmb_command_queryclockcalibration_return *result; int ret; - struct dxgvmbusmsg msg =3D {.hdr =3D NULL}; + struct dxgvmbusmsgres msg =3D {.hdr =3D NULL}; =20 - ret =3D init_message(&msg, adapter, process, sizeof(*command)); + ret =3D init_message_res(&msg, adapter, sizeof(*command), + sizeof(*result)); if (ret) goto cleanup; command =3D (void *)msg.msg; + result =3D msg.res; =20 command_vgpu_to_host_init2(&command->hdr, DXGK_VMBCOMMAND_QUERYCLOCKCALIBRATION, @@ -1981,20 +1983,20 @@ int dxgvmb_send_query_clock_calibration(struct dxgp= rocess *process, command->args =3D *args; =20 ret =3D dxgvmb_send_sync_msg(msg.channel, msg.hdr, msg.size, - &result, sizeof(result)); + result, sizeof(*result)); if (ret < 0) goto cleanup; - ret =3D copy_to_user(&inargs->clock_data, &result.clock_data, - sizeof(result.clock_data)); + ret =3D copy_to_user(&inargs->clock_data, &result->clock_data, + sizeof(result->clock_data)); if (ret) { DXG_ERR("failed to copy clock data"); ret =3D -EFAULT; goto cleanup; } - ret =3D ntstatus2int(result.status); + ret =3D ntstatus2int(result->status); =20 cleanup: - free_message(&msg); + free_message((struct dxgvmbusmsg *)&msg); if (ret) DXG_TRACE("err: %d", ret); return ret; diff --git a/drivers/hv/dxgkrnl/ioctl.c b/drivers/hv/dxgkrnl/ioctl.c index 5ac6dd1f09b9..d91af2e176e9 100644 --- a/drivers/hv/dxgkrnl/ioctl.c +++ b/drivers/hv/dxgkrnl/ioctl.c @@ -4303,11 +4303,6 @@ dxgkio_query_clock_calibration(struct dxgprocess *pr= ocess, void *__user inargs) &args, inargs); if (ret < 0) goto cleanup; - ret =3D copy_to_user(inargs, &args, sizeof(args)); - if (ret) { - DXG_ERR("failed to copy output args"); - ret =3D -EFAULT; - } =20 cleanup: