From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0CF5929B78F; Fri, 21 Nov 2025 13:40:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763732459; cv=none; b=UCClWQMx9p6pItmDPF0pLBvIlfOxphYlvWvSVupR1QD/8uxY0XIZqRMVDBzZI/kNaBjj/XnUKrh2ONNA0Z63bxyS9L/vgL/cI4PkWybiGJP38QSciGVJo/WfUt9RwawkMwBrSqNeSUakzzgHUEa6hx4Q/p7cBlVyG/ARqkv9weA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763732459; c=relaxed/simple; bh=RHaUU6V4Z9COEqB0eThhmb2GoH+mmxxFTcHOlufyMec=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R4xo7SpWsLBFdPRFwAkwJqj29pTTdZvRmZXnxaPqMZNL+XDYl3cz4Odpoyd3YftzmmVKFcJFTJGt4FGrIFNnCX1Rbt4TIyvVawaFT1E4dggngcAdqQltsiyLWC0PbVU2EPWDi4fozomMvFqPG3xGczR97VnjhxBHoFeGyiPIw6U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yFmo2wvO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="yFmo2wvO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8CEF0C4CEF1; Fri, 21 Nov 2025 13:40:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1763732458; bh=RHaUU6V4Z9COEqB0eThhmb2GoH+mmxxFTcHOlufyMec=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yFmo2wvO2U0/cpmIAdb54mNyHG6oDxyiCViO/4ykByw33F+NIGZL6SuKimgkd01e+ M97QZr8J9eSbVwALTKkjrLXf557UEcECz8r5O7c46++al3jrd/5JLWHNbXY0CP4eS1 5JaR/yKzTNygNSzdw8tt3b5r8OC98SwdVFGVFIQY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Geoffrey McRae , Alex Deucher , Felix Kuehling , Sasha Levin Subject: [PATCH 6.6 127/529] drm/amdkfd: return -ENOTTY for unsupported IOCTLs Date: Fri, 21 Nov 2025 14:07:06 +0100 Message-ID: <20251121130235.540893314@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251121130230.985163914@linuxfoundation.org> References: <20251121130230.985163914@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geoffrey McRae [ Upstream commit 57af162bfc8c05332a28c4d458d246cc46d2746d ] Some kfd ioctls may not be available depending on the kernel version the user is running, as such we need to report -ENOTTY so userland can determine the cause of the ioctl failure. Signed-off-by: Geoffrey McRae Acked-by: Alex Deucher Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 35dc926f234e3..f77324a5e9584 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -3252,8 +3252,10 @@ static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) int retcode = -EINVAL; bool ptrace_attached = false; - if (nr >= AMDKFD_CORE_IOCTL_COUNT) + if (nr >= AMDKFD_CORE_IOCTL_COUNT) { + retcode = -ENOTTY; goto err_i1; + } if ((nr >= AMDKFD_COMMAND_START) && (nr < AMDKFD_COMMAND_END)) { u32 amdkfd_size; @@ -3266,8 +3268,10 @@ static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) asize = amdkfd_size; cmd = ioctl->cmd; - } else + } else { + retcode = -ENOTTY; goto err_i1; + } dev_dbg(kfd_device, "ioctl cmd 0x%x (#0x%x), arg 0x%lx\n", cmd, nr, arg); -- 2.51.0