linux-kernel - Re: [PATCH v3 4/6] mm: shmem: add mTHP support for anonymous shmem

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Date: Tue, 4 Jun 2024 17:46:48 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: Dan Carpenter <dan.carpenter@...aro.org>, oe-kbuild@...ts.linux.dev,
 akpm@...ux-foundation.org, hughd@...gle.com
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev, willy@...radead.org,
 david@...hat.com, wangkefeng.wang@...wei.com, ying.huang@...el.com,
 21cnbao@...il.com, ryan.roberts@....com, shy828301@...il.com,
 ziy@...dia.com, ioworker0@...il.com, da.gomez@...sung.com,
 p.raghav@...sung.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/6] mm: shmem: add mTHP support for anonymous shmem



On 2024/6/4 17:23, Dan Carpenter wrote:
> Hi Baolin,
> 
> kernel test robot noticed the following build warnings:
> 
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Baolin-Wang/mm-memory-extend-finish_fault-to-support-large-folio/20240530-100805
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/ec35a23026dd016705d211e85163cabe07681516.1717033868.git.baolin.wang%40linux.alibaba.com
> patch subject: [PATCH v3 4/6] mm: shmem: add mTHP support for anonymous shmem
> config: powerpc64-randconfig-r071-20240531 (https://download.01.org/0day-ci/archive/20240602/202406020203.14sT311e-lkp@intel.com/config)
> compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project bafda89a0944d947fc4b3b5663185e07a397ac30)
> 
> 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@...el.com>
> | Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
> | Closes: https://lore.kernel.org/r/202406020203.14sT311e-lkp@intel.com/
> 
> smatch warnings:
> mm/shmem.c:1766 shmem_alloc_and_add_folio() error: uninitialized symbol 'suitable_orders'.

Thanks Dan. LKP also reported this warning [1]. Will fix it.

[1] https://lore.kernel.org/all/202405301430.0NRLTOWU-lkp@intel.com/