Jing-Ting Wu f49fd5fe23 cgroup: Fix race condition at rebind_subsystems() ... commit 763f4fb76e upstream. Root cause: The rebind_subsystems() is no lock held when move css object from A list to B list,then let B's head be treated as css node at list_for_each_entry_rcu(). Solution: Add grace period before invalidating the removed rstat_css_node. Reported-by: Jing-Ting Wu <jing-ting.wu@mediatek.com> Suggested-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Jing-Ting Wu <jing-ting.wu@mediatek.com> Tested-by: Jing-Ting Wu <jing-ting.wu@mediatek.com> Link: https://lore.kernel.org/linux-arm-kernel/d8f0bc5e2fb6ed259f9334c83279b4c011283c41.camel@mediatek.com/T/ Acked-by: Mukesh Ojha <quic_mojha@quicinc.com> Fixes: a7df69b81a ("cgroup: rstat: support cgroup1") Cc: stable@vger.kernel.org # v5.13+ Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-08-31 17:16:33 +02:00
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cgroup-internal.h	cgroup: Use open-time cgroup namespace for process migration perm checks	2022-01-11 15:35:15 +01:00
cgroup-v1.c	cgroup-v1: Correct privileges check in release_agent writes	2022-03-02 11:47:47 +01:00
cgroup.c	cgroup: Fix race condition at rebind_subsystems()	2022-08-31 17:16:33 +02:00
cpuset.c	sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed	2022-08-17 14:24:14 +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	memcg: enable accounting for new namesapces and struct nsproxy	2021-09-03 09:58:12 -07:00
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