Tetsuo Handa 9f267393b0 cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() ... commit 43626dade3 upstream. syzbot is hitting percpu_rwsem_assert_held(&cpu_hotplug_lock) warning at cpuset_attach() [1], for commit 4f7e723643 ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock") missed that cpuset_attach() is also called from cgroup_attach_task_all(). Add cpus_read_lock() like what cgroup_procs_write_start() does. Link: https://syzkaller.appspot.com/bug?extid=29d3a3b4d86c8136ad9e [1] Reported-by: syzbot <syzbot+29d3a3b4d86c8136ad9e@syzkaller.appspotmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: 4f7e723643 ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock") Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-09-23 14:17:00 +02:00
..
cgroup-internal.h	cgroup: Use open-time cgroup namespace for process migration perm checks	2022-03-28 09:57:07 +02:00
cgroup-v1.c	cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()	2022-09-23 14:17:00 +02:00
cgroup.c	cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock	2022-09-15 11:32:04 +02:00
cpuset.c	cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock	2022-09-15 11:32:04 +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: cgroup v2 freezer	2019-04-19 11:26:48 -07:00
namespace.c	nsproxy: add struct nsset	2020-05-09 13:57:12 +02:00
pids.c	clone3: allow spawning processes into cgroups	2020-02-12 17:57:51 -05:00
rdma.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 451	2019-06-19 17:09:08 +02:00
rstat.c	cgroup: Fix rootcg cpu.stat guest double counting	2021-11-18 14:04:13 +01:00