Tetsuo Handa 43626dade3 cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() ...

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 <[email protected]>
Signed-off-by: Tetsuo Handa <[email protected]>
Fixes: 4f7e723643 ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock")
Signed-off-by: Tejun Heo <[email protected]>

2022-08-25 07:36:30 -10:00

..

cgroup-internal.h

cgroup: Make !percpu threadgroup_rwsem operations optional

2022-07-23 04:29:02 -10:00

cgroup-v1.c

cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()

2022-08-25 07:36:30 -10:00

cgroup.c

cgroup: Fix race condition at rebind_subsystems()

2022-08-23 08:11:06 -10:00

cpuset.c

cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock

2022-08-17 07:36:05 -10:00

debug.c

…

freezer.c

cgroup: cleanup comments

2022-03-13 19:19:27 -10:00

legacy_freezer.c

…

Makefile

cgroup: Add misc cgroup controller

2021-04-04 13:34:46 -04:00

misc.c

misc_cgroup: remove error log to avoid log flood

2021-09-20 07:35:38 -10:00

namespace.c

memcg: enable accounting for new namesapces and struct nsproxy

2021-09-03 09:58:12 -07:00

pids.c

…

rdma.c

cgroup: fix spelling mistakes

2021-05-24 12:45:26 -04:00

rstat.c

sched/core: add forced idle accounting for cgroups

2022-07-04 09:23:07 +02:00