• Paul E. McKenney's avatar
    rcuperf: Fix cleanup path for invalid perf_type strings · 090eb578
    Paul E. McKenney authored
    [ Upstream commit ad092c02 ]
    
    If the specified rcuperf.perf_type is not in the rcu_perf_init()
    function's perf_ops[] array, rcuperf prints some console messages and
    then invokes rcu_perf_cleanup() to set state so that a future torture
    test can run.  However, rcu_perf_cleanup() also attempts to end the
    test that didn't actually start, and in doing so relies on the value
    of cur_ops, a value that is not particularly relevant in this case.
    This can result in confusing output or even follow-on failures due to
    attempts to use facilities that have not been properly initialized.
    
    This commit therefore sets the value of cur_ops to NULL in this case and
    inserts a check near the beginning of rcu_perf_cleanup(), thus avoiding
    relying on an irrelevant cur_ops value.
    Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.ibm.com>
    Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
    090eb578
rcuperf.c 16.1 KB