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| author | Tejun Heo <tj@kernel.org> | 2016-05-26 22:42:13 +0300 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-06-17 00:59:35 +0300 |
| commit | 8fa3b8d689a54d6d04ff7803c724fb7aca6ce98e (patch) | |
| tree | c3da33dd0e95d606779ece7a984827dd530c660f /kernel/locking/mutex.h | |
| parent | b00c52dae6d9ee8d0f2407118ef6544ae5524781 (diff) | |
| download | linux-8fa3b8d689a54d6d04ff7803c724fb7aca6ce98e.tar.xz | |
cgroup: set css->id to -1 during init
If percpu_ref initialization fails during css_create(), the free path
can end up trying to free css->id of zero. As ID 0 is unused, it
doesn't cause a critical breakage but it does trigger a warning
message. Fix it by setting css->id to -1 from init_and_link_css().
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Wenwei Tao <ww.tao0320@gmail.com>
Fixes: 01e586598b22 ("cgroup: release css->id after css_free")
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/locking/mutex.h')
0 files changed, 0 insertions, 0 deletions