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X-CSE-ConnectionGUID: 70I0EWyTRU+qyZMLHrXhPw== X-CSE-MsgGUID: 4ItM/arFSfCK7fzD7/7Ogw== X-IronPort-AV: E=McAfee;i="6700,10204,11102"; a="15359561" X-IronPort-AV: E=Sophos;i="6.08,235,1712646000"; d="scan'208";a="15359561" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa108.fm.intel.com with ESMTP; 13 Jun 2024 09:07:40 -0700 X-CSE-ConnectionGUID: MdDWxZK1QGeyPUHtawxmUw== X-CSE-MsgGUID: JNyMXj1yQ2+iYIYu6rNZCA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,235,1712646000"; d="scan'208";a="40672880" Received: from unknown (HELO [10.125.111.40]) ([10.125.111.40]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jun 2024 09:07:40 -0700 Message-ID: <32eddae1-14bf-42dd-afdd-7dca8bc8a131@intel.com> Date: Thu, 13 Jun 2024 09:07:39 -0700 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] virt: tdx-guest: Fix the decrypted failure memory free To: Li RongQing , kirill.shutemov@linux.intel.com, dave.hansen@linux.intel.com, x86@kernel.org, linux-coco@lists.linux.dev, "Edgecombe, Rick P" , LKML References: <20240613111931.43123-1-lirongqing@baidu.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/13/24 04:19, Li RongQing wrote: > When set_memory_decrypted() fails, the memory should be encrypted > via set_memory_encrypted(); if encrypting the memory fails, leak it Please, always cc LKML on this stuff. Second, Rick was looking in this area, but I'm not sure we ever applied his patches. The idea was to never leak memory silently in these failures. Doesn't this silently leak memory?