Waiman Long f386359d1b cgroup: Protect css->cgroup write under css_set_lock ... [ Upstream commit 57b56d1680 ] The writing of css->cgroup associated with the cgroup root in rebind_subsystems() is currently protected only by cgroup_mutex. However, the reading of css->cgroup in both proc_cpuset_show() and proc_cgroup_show() is protected just by css_set_lock. That makes the readers susceptible to racing problems like data tearing or caching. It is also a problem that can be reported by KCSAN. This can be fixed by using READ_ONCE() and WRITE_ONCE() to access css->cgroup. Alternatively, the writing of css->cgroup can be moved under css_set_lock as well which is done by this patch. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-09-12 11:07:48 +02:00
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cgroup-internal.h	memcg: fix possible use-after-free in memcg_write_event_control()	2022-12-14 11:37:19 +01:00
cgroup-v1.c	cgroup: Remove duplicates in cgroup v1 tasks file	2023-10-19 23:05:37 +02:00
cgroup.c	cgroup: Protect css->cgroup write under css_set_lock	2024-09-12 11:07:48 +02:00
cpuset.c	cgroup/cpuset: Prevent UAF in proc_cpuset_show()	2024-09-04 13:23:38 +02:00
debug.c	kernel: cgroup: fix misuse of %x	2019-05-06 08:47:48 -07:00
freezer.c	cgroup: freezer: don't change task and cgroups status unnecessarily	2019-11-07 07:38:41 -08:00
legacy_freezer.c	cgroup: rename freezer.c into legacy_freezer.c	2019-04-19 11:26:48 -07:00
Makefile	cgroup: Add misc cgroup controller	2021-04-04 13:34:46 -04:00
misc.c	svm/sev: Register SEV and SEV-ES ASIDs to the misc controller	2021-04-04 13:34:46 -04:00
namespace.c	cgroup:namespace: Remove unused cgroup_namespaces_init()	2023-09-19 12:22:47 +02:00
pids.c	clone3: allow spawning processes into cgroups	2020-02-12 17:57:51 -05:00
rdma.c	cgroup: fix spelling mistakes	2021-05-24 12:45:26 -04:00
rstat.c	cgroup: Fix rootcg cpu.stat guest double counting	2021-11-18 19:16:45 +01:00