Tetsuo Handa 0d7a4e6589 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 11:12:25 +02:00

..

cgroup-internal.h

memcg: Fix possible use-after-free in memcg_write_event_control()

2022-12-08 10:40:58 -08:00

cgroup-v1.c

cgroup: fix missing cpus_read_{lock,unlock}() in cgroup_transfer_tasks()

2023-06-21 16:00:51 +02:00

cgroup.c

cgroup: Do not corrupt task iteration when rebinding subsystem

2023-06-28 11:12:25 +02:00

cpuset.c

cgroup/cpuset: Add cpuset_can_fork() and cpuset_cancel_fork() methods

2023-04-20 12:35:14 +02:00

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 11:12:25 +02:00

Makefile

…

misc.c

…

namespace.c

…

pids.c

cgroup: add pids.peak interface for pids controller

2022-09-04 09:26:51 -10:00

rdma.c

…

rstat.c

cgroup: fix display of forceidle time at root

2023-04-20 12:35:13 +02:00