android_kernel_motorola_sm6375/kernel/cgroup
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Waiman Long ed33906972 cgroup/cpuset: Fix "suspicious RCU usage" lockdep warning
commit 2bdfd2825c9662463371e6691b1a794e97fa36b4 upstream.

It was found that a "suspicious RCU usage" lockdep warning was issued
with the rcu_read_lock() call in update_sibling_cpumasks().  It is
because the update_cpumasks_hier() function may sleep. So we have
to release the RCU lock, call update_cpumasks_hier() and reacquire
it afterward.

Also add a percpu_rwsem_assert_held() in update_sibling_cpumasks()
instead of stating that in the comment.

Fixes: 4716909cc5 ("cpuset: Track cpusets that use parent's effective_cpus")
Signed-off-by: Waiman Long <longman@redhat.com>
Tested-by: Phil Auld <pauld@redhat.com>
Reviewed-by: Phil Auld <pauld@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-08 18:24:35 +01:00
..
cgroup-internal.h
cgroup-v1.c cgroup-v1: Require capabilities to set release_agent 2022-02-05 12:35:36 +01:00
cgroup.c psi: Fix uaf issue when psi trigger is destroyed while being polled 2022-02-05 12:35:36 +01:00
cpuset.c cgroup/cpuset: Fix "suspicious RCU usage" lockdep warning 2022-02-08 18:24:35 +01:00
debug.c
freezer.c
legacy_freezer.c
Makefile
namespace.c
pids.c
rdma.c
rstat.c