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authorLi Zefan <lizefan@huawei.com>2013-02-18 14:13:35 +0800
committerTejun Heo <tj@kernel.org>2013-02-18 09:31:35 -0800
commitf169007b2773f285e098cb84c74aac0154d65ff7 (patch)
tree6b295320c25b9fe8c1e4e94fcc35570134ebb8be /tools
parent810cbee4fad570ff167132d4ecf247d99c48f71d (diff)
downloadvexpress-lsk-f169007b2773f285e098cb84c74aac0154d65ff7.tar.gz
cgroup: fail if monitored file and event_control are in different cgroup
If we pass fd of memory.usage_in_bytes of cgroup A to cgroup.event_control of cgroup B, then we won't get memory usage notification from A but B! What's worse, if A and B are in different mount hierarchy, we'll end up accessing NULL pointer! Disallow this kind of invalid usage. Signed-off-by: Li Zefan <lizefan@huawei.com> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions