Ondrej Mosnacek 4b5abffd63 cgroup: fix parsing empty mount option string ... [ Upstream commit e250d91d65 ] This fixes the case where all mount options specified are consumed by an LSM and all that's left is an empty string. In this case cgroupfs should accept the string and not fail. How to reproduce (with SELinux enabled): # umount /sys/fs/cgroup/unified # mount -o context=system_u:object_r:cgroup_t:s0 -t cgroup2 cgroup2 /sys/fs/cgroup/unified mount: /sys/fs/cgroup/unified: wrong fs type, bad option, bad superblock on cgroup2, missing codepage or helper program, or other error. # dmesg | tail -n 1 [ 31.575952] cgroup: cgroup2: unknown option "" Fixes: 67e9c74b8a ("cgroup: replace __DEVEL__sane_behavior with cgroup2 fs type") [NOTE: should apply on top of commit 5136f6365c ("cgroup: implement "nsdelegate" mount option"), older versions need manual rebase] Suggested-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-02-12 19:47:17 +01:00
..
cgroup-internal.h	cgroup/tracing: Move taking of spin lock out of trace event handlers	2018-07-11 10:48:47 -07:00
cgroup-v1.c	cgroup/tracing: Move taking of spin lock out of trace event handlers	2018-07-11 10:48:47 -07:00
cgroup.c	cgroup: fix parsing empty mount option string	2019-02-12 19:47:17 +01:00
cpuset.c	docs: Fix some broken references	2018-06-15 18:10:01 -03:00
debug.c	debug cgroup: use task_css_set instead of rcu_dereference	2017-11-27 11:37:33 -08:00
freezer.c	cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS	2017-07-21 11:14:51 -04:00
Makefile	cgroup: Rename kernel/cgroup/stat.c to kernel/cgroup/rstat.c	2018-04-26 14:29:04 -07:00
namespace.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pids.c	cgroup: implement cgroup v2 thread support	2017-07-21 11:14:51 -04:00
rdma.c	rdmacg: Convert to use match_string() helper	2018-05-07 09:27:26 -07:00
rstat.c	cgroup: Make cgroup_rstat_updated() ready for root cgroup usage	2018-04-26 14:29:06 -07:00