diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-01-25 16:08:01 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-02-18 09:08:15 -0800 |
| commit | 63f43f55c9bbc14f76b582644019b8a07dc8219a (patch) | |
| tree | c9ab6bbf633b6d441c67c3735782b6011afc5b17 /kernel/params.c | |
| parent | 71b5707e119653039e6e95213f00479668c79b75 (diff) | |
cpuset: fix cpuset_print_task_mems_allowed() vs rename() race
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>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'kernel/params.c')
0 files changed, 0 insertions, 0 deletions