Xiu Jianfeng a69d18e802 cgroup: Fix potential overflow issue when checking max_depth ... [ Upstream commit 3cc4e13bb1 ] cgroup.max.depth is the maximum allowed descent depth below the current cgroup. If the actual descent depth is equal or larger, an attempt to create a new child cgroup will fail. However due to the cgroup->max_depth is of int type and having the default value INT_MAX, the condition 'level > cgroup->max_depth' will never be satisfied, and it will cause an overflow of the level after it reaches to INT_MAX. Fix it by starting the level from 0 and using '>=' instead. It's worth mentioning that this issue is unlikely to occur in reality, as it's impossible to have a depth of INT_MAX hierarchy, but should be be avoided logically. Fixes: 1a926e0bba ("cgroup: implement hierarchy limits") Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Reviewed-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-11-08 16:25:51 +01:00
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cgroup-internal.h	cgroup: Make operations on the cgroup root_list RCU safe	2024-10-17 15:10:40 +02:00
cgroup-v1.c	cgroup: Remove duplicates in cgroup v1 tasks file	2023-10-19 23:05:37 +02:00
cgroup.c	cgroup: Fix potential overflow issue when checking max_depth	2024-11-08 16:25:51 +01:00
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