diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-01-25 16:08:01 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-04 06:09:06 +0800 |
| commit | 6403d47ff9392807fcfa4464527193e0cab65b2a (patch) | |
| tree | e7c5acca575644ed2d09f7eed62476e7f133b75f /kernel/smp.c | |
| parent | 2212f47b734e5b9461b5c3f555dc653ea7aa212f (diff) | |
cpuset: fix cpuset_print_task_mems_allowed() vs rename() race
commit 63f43f55c9bbc14f76b582644019b8a07dc8219a upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/smp.c')
0 files changed, 0 insertions, 0 deletions