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([2620:10d:c092:600::1:4215]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-abf0c0dc240sm98204766b.59.2025.02.27.02.06.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Feb 2025 02:06:16 -0800 (PST) Message-ID: <5f2ede96-183a-4dc7-94b5-d4ec00d38c08@gmail.com> Date: Thu, 27 Feb 2025 10:07:13 +0000 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [axboe-block:for-6.15/io_uring 55/56] io_uring/net.c:719:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true To: kernel test robot Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Jens Axboe References: <202502270853.xYltEB97-lkp@intel.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <202502270853.xYltEB97-lkp@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2/27/25 00:12, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-6.15/io_uring > head: 7eb5bb749ed945ead6a089e18e1d1da74523ac9a > commit: 68525267875757520752ff1abbda0af58fc172b9 [55/56] io_uring/net: unify *mshot_prep calls with compat > config: um-randconfig-001-20250227 (https://download.01.org/0day-ci/archive/20250227/202502270853.xYltEB97-lkp@intel.com/config) > compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250227/202502270853.xYltEB97-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202502270853.xYltEB97-lkp@intel.com/ Not a real problem, it's just the compiler (understandably) can't derive that the block is only empty IFF io_is_compat() is a constant false. We can initialise the var and let the compiler optimise it to silence the warning. -- Pavel Begunkov