diff options
author | Chen Zhou <chenzhou10@huawei.com> | 2021-01-15 17:37:17 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-17 11:02:25 +0100 |
commit | 3e53d64e9a4d88226fb1ab55900fe4e89e81df1e (patch) | |
tree | 6751f4ea1dfe91131c3f8808d2baa410e0273ddf /kernel/params.c | |
parent | 2aba53830f5d02dcd0bb74a00c8b8023df9d1398 (diff) |
cgroup-v1: add disabled controller check in cgroup1_parse_param()
[ Upstream commit 61e960b07b637f0295308ad91268501d744c21b5 ]
When mounting a cgroup hierarchy with disabled controller in cgroup v1,
all available controllers will be attached.
For example, boot with cgroup_no_v1=cpu or cgroup_disable=cpu, and then
mount with "mount -t cgroup -ocpu cpu /sys/fs/cgroup/cpu", then all
enabled controllers will be attached except cpu.
Fix this by adding disabled controller check in cgroup1_parse_param().
If the specified controller is disabled, just return error with information
"Disabled controller xx" rather than attaching all the other enabled
controllers.
Fixes: f5dfb5315d34 ("cgroup: take options parsing into ->parse_monolithic()")
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Reviewed-by: Zefan Li <lizefan.x@bytedance.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/params.c')
0 files changed, 0 insertions, 0 deletions