From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (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 72BAF10F9 for ; Mon, 24 Mar 2025 12:00:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742817640; cv=none; b=b/SQi3ErC6EDKLUOqQMlnpY6hiRfh2VrX1C/GND7Y47+B2IEwa8JSvjzYZibH6qcJJ+Cu27jOZs/IEcjDi+VEeckRiZcBEIC36Bx0Jh9tEQ1caskr+TYL5xkGlKF/FlQurH3fZr/Cwsb3m/RzwfB/lz9u+JSkKp3dyH1rpoVCnw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742817640; c=relaxed/simple; bh=rh9vZtObhEkbhuuhWcHvxy9KKUWs3g8DJZ1s+Hfxelo=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=T9hxG0vGsgPzpPiE/3Cr3LxcZuSBziYxi+OZez53d39BrRNmuAYA1JNsET89RiLRZu+NFiPbZlPB6cNJscLfbYSZWLt5t0gBmujhTiaGM5a6OZ1DYU34ygtepecwqFP8NA9ZDuhsrFsKw9hv8io9H4LJ3IY33qRKPeiwEB3PDs8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=fJO3og4x; arc=none smtp.client-ip=198.175.65.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="fJO3og4x" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1742817638; x=1774353638; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=rh9vZtObhEkbhuuhWcHvxy9KKUWs3g8DJZ1s+Hfxelo=; b=fJO3og4xszAoRjFyBX4vxtkMKHVLyUrQbgWNHf5EuwZH3Mfy1kXRB8R3 bRFYl2cyIF9U+wiJLlExJnkwY6VzTsmxKvXdZhrfFbw4Mhk4pYvVJn1rz +OFV9PNGfbYbIpRdVr7ualixklcjPl3/sPzNUS1ki7xC82TJM1v+xLF7W 9PQKJJ/6wR3aUV5i9f8TSqIbKbHCGGfOFtoasJ4GjI6WY0cuxFGSBSV2R 3g93TW28dkPlukUzqUxz5XLN6KQnWW0GIy+PJbHog8VT4isnlKW1tFNXQ kfjPndKzv09nkJyGj498ZYpf3vuqHrAIjINcj8yCLzxrdLJeUDd5wlKJF w==; X-CSE-ConnectionGUID: W3/78dnuSZ2XGX9f+vGZ/Q== X-CSE-MsgGUID: khLonzBIRQKnseHiIFoofA== X-IronPort-AV: E=McAfee;i="6700,10204,11382"; a="44031307" X-IronPort-AV: E=Sophos;i="6.14,271,1736841600"; d="scan'208";a="44031307" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2025 05:00:36 -0700 X-CSE-ConnectionGUID: jBsJPvPeTJGSMvB9uE+a3Q== X-CSE-MsgGUID: 8YEYqgAxQbGd0yPhi2M3lQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,271,1736841600"; d="scan'208";a="123753917" Received: from unknown (HELO 984fee00a4c6.jf.intel.com) ([10.165.58.231]) by orviesa009.jf.intel.com with ESMTP; 24 Mar 2025 05:00:35 -0700 From: Yi Liu To: jgg@nvidia.com, kevin.tian@intel.com Cc: nicolinc@nvidia.com, yi.l.liu@intel.com, baolu.lu@linux.intel.com, iommu@lists.linux.dev Subject: [PATCH 0/2] Two fixes to vevent path Date: Mon, 24 Mar 2025 05:00:32 -0700 Message-Id: <20250324120034.5940-1-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit iommufd selftest occassionally fail when reading vevent. After debugging, it is due to vevent->header.flags. It is not set properly per allocation. This can be fixed by using kzalloc(). There is another related issue. The veventq->num_events inc/dec is not balanced. This is problemtic. Make a fix for it as well. Regards, Yi Liu Yi Liu (2): iommufd: Initialize the flags of vevent in iommufd_viommu_report_event() iommufd: Balance veventq->num_events inc/dec drivers/iommu/iommufd/driver.c | 2 +- drivers/iommu/iommufd/eventq.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) -- 2.34.1