Messages in this thread Patch in this message | | | From | Scott Wood <> | Subject | [PATCH RT 4.19] rcutorture: Fix oops when selecting non-default torture_type | Date | Thu, 21 Mar 2019 22:21:21 -0500 |
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rcu_bh is disabled on PREEMPT_RT via a stub ops that has no name. Thus, if a torture_type other than "rcu" is used, rcu_torture_init() will pass NULL to strcmp() when iterating over torture_ops[], and oops.
Signed-off-by: Scott Wood <swood@redhat.com> --- With this applied to 4.19.25-rt16 and specifying torture_type=sched, similar rcutorture failures are seen as with 5.0.3-rt1 (in which standard torture_cype=rcu no longer has .extendables=0 and thus stresses similar paths).
kernel/rcu/rcutorture.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 7d2a615601e7..408d03048911 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -479,6 +479,7 @@ static struct rcu_torture_ops rcu_bh_ops = { #else static struct rcu_torture_ops rcu_bh_ops = { .ttype = INVALID_RCU_FLAVOR, + .name = "rcu_bh" }; #endif -- 2.18.1
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