diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-01-25 16:08:01 +0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-03-06 03:24:02 +0000 |
| commit | 59222bdd5b2a0e4f868d867a71397945236c1412 (patch) | |
| tree | 66dc15130ef6d658b5225c3032790d00e70c392d /kernel/profile.c | |
| parent | d6f179e6f4e2dd693f848bb4e06176a01a6553ab (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: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'kernel/profile.c')
0 files changed, 0 insertions, 0 deletions