linux-kernel - linux-next: build warning after merge of the cgroup tree

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Date:   Wed, 13 Dec 2017 14:56:27 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Tejun Heo <tj@...nel.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ma Shimiao <mashimiao.fnst@...fujitsu.com>
Subject: linux-next: build warning after merge of the cgroup tree

Hi Tejun,

After merging the cgroup tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

kernel/cgroup/cgroup.c: In function 'init_cgroup_root':
kernel/cgroup/cgroup.c:1867:3: warning: ignoring return value of 'strscpy', declared with attribute warn_unused_result [-Wunused-result]
   strscpy(root->release_agent_path, opts->release_agent, PATH_MAX);
   ^
kernel/cgroup/cgroup.c:1869:3: warning: ignoring return value of 'strscpy', declared with attribute warn_unused_result [-Wunused-result]
   strscpy(root->name, opts->name, MAX_CGROUP_ROOT_NAMELEN);
   ^
kernel/cgroup/cgroup.c: In function 'cgroup_file_name':
kernel/cgroup/cgroup.c:1400:3: warning: ignoring return value of 'strscpy', declared with attribute warn_unused_result [-Wunused-result]
   strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX);
   ^

Introduced by commit

  e7fd37ba1217 ("cgroup: avoid copying strings longer than the buffers")

-- 
Cheers,
Stephen Rothwell