linux-stable/kernel/cgroup
Tetsuo Handa 2538201880 cgroup,freezer: hold cpu_hotplug_lock before freezer_mutex in freezer_css_{online,offline}()
commit f0cc749254 upstream.

syzbot is again reporting circular locking dependency between
cpu_hotplug_lock and freezer_mutex. Do like what we did with
commit 57dcd64c7e ("cgroup,freezer: hold cpu_hotplug_lock
before freezer_mutex").

Reported-by: syzbot <syzbot+2ab700fe1829880a2ec6@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=2ab700fe1829880a2ec6
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Tested-by: syzbot <syzbot+2ab700fe1829880a2ec6@syzkaller.appspotmail.com>
Fixes: f5d39b0208 ("freezer,sched: Rewrite core freezer logic")
Cc: stable@vger.kernel.org # v6.1+
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-06-28 11:14:07 +02:00
..
Makefile cgroup: Add misc cgroup controller 2021-04-04 13:34:46 -04:00
cgroup-internal.h memcg: fix possible use-after-free in memcg_write_event_control() 2022-12-09 18:41:17 -08:00
cgroup-v1.c cgroup: fix missing cpus_read_{lock,unlock}() in cgroup_transfer_tasks() 2023-06-21 16:02:05 +02:00
cgroup.c cgroup: Do not corrupt task iteration when rebinding subsystem 2023-06-28 11:14:07 +02:00
cpuset.c cgroup/cpuset: Make cpuset_attach_task() skip subpartitions CPUs for top_cpuset 2023-04-12 08:23:58 -10:00
debug.c
freezer.c cgroup: cleanup comments 2022-03-13 19:19:27 -10:00
legacy_freezer.c cgroup,freezer: hold cpu_hotplug_lock before freezer_mutex in freezer_css_{online,offline}() 2023-06-28 11:14:07 +02:00
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 cgroup: add pids.peak interface for pids controller 2022-09-04 09:26:51 -10:00
rdma.c cgroup: fix spelling mistakes 2021-05-24 12:45:26 -04:00
rstat.c cgroup: fix display of forceidle time at root 2023-03-17 12:19:15 -10:00