Messages in this thread | | | Date | Fri, 25 Jan 2013 08:51:54 -0800 | From | Tejun Heo <> | Subject | Re: [PATCH v2] cpuset: fix cpuset_print_task_mems_allowed() vs rename() race |
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On Fri, Jan 25, 2013 at 04:08:01PM +0800, Li Zefan wrote: > rename() will change dentry->d_name. The result of this race can > be worse than seeing partially rewritten name, but we might access > a stale pointer because rename() will re-allocate memory to hold > a longer name. > > It's safe in the protection of dentry->d_lock. > > v2: check NULL dentry before acquiring dentry lock. > > Signed-off-by: Li Zefan <lizefan@huawei.com>
Applied to cgroup/for-3.8-fixes w/ stable cc'd.
Thanks.
-- tejun
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