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 9A9FA264F9C; Tue, 8 Jul 2025 16:49:07 +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=1751993347; cv=none; b=jtj05HOqlEVgXVkXuqkdycU3dQSWEiTr/BmmLTvsvl3JkVRCHPcjyWVhbbMvVSKE259W5JzyFffqnF15dxkbz2FVbPE4lXGq8KaPkZqA8YT1DseV8VesN7S6uIZJyVrrsP94wguAnBVsCSn9A5loEC3iTtIDBvTb1Iku+bWBnd0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993347; c=relaxed/simple; bh=TTrCvHW5pHh2Iuxj9jpffNu2w1D4BYuhM6ZyvkGzuvQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=foxdfDSXBdOCgm7KlOKeKCDDzM//suQrn+fM3LQIxnPeTu2XIjcdd7r5u1T567HMRUQ2u5aRRnroL9z722Phercys6rrZyumrOQ9Tp7LReMVeHLCJEza14Ta6sCGtVGNZtl8UVztpI3mtec4bOTndT4NyjkF9ThHkjvZJlcnkBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GdS0FMUy; 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="GdS0FMUy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 21145C4CEED; Tue, 8 Jul 2025 16:49:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751993347; bh=TTrCvHW5pHh2Iuxj9jpffNu2w1D4BYuhM6ZyvkGzuvQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GdS0FMUy9V5AI1HHno0qvF3i4rVoLR7KqDKEbO658KSpA7Dlhyrdrv+lX2vjx4JWm ielo8kkmftbjpFFK4q1efck/uh0ScmdYo08IkqDWZcfm2iXg58XtXu/A7HhjU/n51f XUnD9ID4/69YJ74Ax8VGXXVrQpleVkkl/PxwbWBw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jason Gunthorpe , Nicolin Chen Subject: [PATCH 6.15 012/178] iommufd/selftest: Add asserts testing global mfd Date: Tue, 8 Jul 2025 18:20:49 +0200 Message-ID: <20250708162236.866056338@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162236.549307806@linuxfoundation.org> References: <20250708162236.549307806@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicolin Chen commit a9bf67ee170514b17541038c60bb94cb2cf5732f upstream. The mfd and mfd_buffer will be used in the tests directly without an extra check. Test them in setup_sizes() to ensure they are safe to use. Fixes: 0bcceb1f51c7 ("iommufd: Selftest coverage for IOMMU_IOAS_MAP_FILE") Link: https://patch.msgid.link/r/94bdc11d2b6d5db337b1361c5e5fce0ed494bb40.1750787928.git.nicolinc@nvidia.com Cc: stable@vger.kernel.org Reviewed-by: Jason Gunthorpe Signed-off-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/iommu/iommufd.c | 2 ++ 1 file changed, 2 insertions(+) --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -54,6 +54,8 @@ static __attribute__((constructor)) void mfd_buffer = memfd_mmap(BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, &mfd); + assert(mfd_buffer != MAP_FAILED); + assert(mfd > 0); } FIXTURE(iommufd)