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

[Pavel Begunkov <asml.silence@gmail.com>]

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 <lkp@intel.com>
> | 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