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authorLi Zefan <lizefan@huawei.com>2013-03-05 06:57:03 +0400
committerTejun Heo <tj@kernel.org>2013-03-05 21:33:25 +0400
commit7d8e0bf56a66bab08d2f316dd87e56c08cecb899 (patch)
treebe35c2daec953f0c98241c16311879dd45bc4859 /include/linux/res_counter.h
parentf50daa704f36a6544a902c52b6cf37b0493dfc5d (diff)
downloadlinux-7d8e0bf56a66bab08d2f316dd87e56c08cecb899.tar.xz
cgroup: avoid accessing modular cgroup subsys structure without locking
subsys[i] is set to NULL in cgroup_unload_subsys() at modular unload, and that's protected by cgroup_mutex, and then the memory *subsys[i] resides will be freed. So this is unsafe without any locking: if (!ss || ss->module) ... v2: - add a comment for enum cgroup_subsys_id - simplify the comment in cgroup_exit() Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/res_counter.h')
0 files changed, 0 insertions, 0 deletions