tree ae1f9173e91043d0849844e8be545d086ca8254f
parent 02b51a1cf47977d8772c7dcc363ef6a1e6e59f21
author Paul E. McKenney <paulmck@kernel.org> 1640735978 -0800
committer Paul E. McKenney <paulmck@kernel.org> 1643765079 -0800

rcutorture: Fix rcu_fwd_mutex deadlock

The rcu_torture_fwd_cb_hist() function acquires rcu_fwd_mutex, but is
invoked from rcutorture_oom_notify() function, which hold this same
mutex across this call.  This commit fixes the resulting deadlock.

Reported-by: kernel test robot <oliver.sang@intel.com>
Tested-by: Oliver Sang <oliver.sang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>