linux-kernel - Re: [PATCH 5/5] procfs: share fd/fdinfo with thread group leader when files are shared

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Message-ID: <201804242316.TemnBYbI%fengguang.wu@intel.com>
Date:   Tue, 24 Apr 2018 23:41:16 +0800
From:   kbuild test robot <lkp@...el.com>
To:     jeffm@...e.com
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Oleg Nesterov <oleg@...hat.com>, Jeff Mahoney <jeffm@...e.com>
Subject: Re: [PATCH 5/5] procfs: share fd/fdinfo with thread group leader
 when files are shared

Hi Jeff,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc2 next-20180424]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/jeffm-suse-com/procfs-reduce-duplication-by-using-symlinks/20180424-203620
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:285:34: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:331:42: sparse: expression using sizeof(void)
   fs/proc/base.c:834:32: sparse: expression using sizeof(void)
   fs/proc/base.c:950:27: sparse: expression using sizeof(void)
   fs/proc/base.c:951:28: sparse: expression using sizeof(void)
   fs/proc/base.c:951:28: sparse: expression using sizeof(void)
   fs/proc/base.c:2085:25: sparse: cast to restricted fmode_t
   fs/proc/base.c:2140:42: sparse: cast from restricted fmode_t
   fs/proc/base.c:2243:48: sparse: cast from restricted fmode_t
>> fs/proc/base.c:3568:32: sparse: symbol 'proc_pid_files_link_dentry_operations' was not declared. Should it be static?
   fs/proc/base.c:1078:36: sparse: context imbalance in '__set_oom_adj' - unexpected unlock
   fs/proc/base.c:2271:13: sparse: context imbalance in 'timers_start' - wrong count at exit
   fs/proc/base.c:2297:36: sparse: context imbalance in 'timers_stop' - unexpected unlock

Please review and possibly fold the followup patch.

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