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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-06-23 03:11:31 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-15 23:47:17 +0200 |
| commit | 3a0af333415830d2a0ca77de832336af5aadced4 (patch) | |
| tree | c5b95499f63e853e398d9fad97a06bae0edfc4c6 /kernel/rcu | |
| parent | rcutorture: Bounds-check rcutorture.shuffle_interval (diff) | |
| download | linux-3a0af333415830d2a0ca77de832336af5aadced4.tar.xz linux-3a0af333415830d2a0ca77de832336af5aadced4.zip | |
rcutorture: Fix rcu_torture_cbflood() for callback-free RCU
The rcu_torture_cbflood() function correctly checks for flavors of
RCU that lack analogs to call_rcu() and rcu_barrier(), but in that
case it fails to terminate correctly. In fact, it terminates so
incorrectly that segfaults can result. This commit therefore causes
rcu_torture_cbflood() to do the proper wait-for-stop procedure.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 1cead7806ca6..e0eda3c1b621 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -823,9 +823,7 @@ rcu_torture_cbflood(void *arg) } if (err) { VERBOSE_TOROUT_STRING("rcu_torture_cbflood disabled: Bad args or OOM"); - while (!torture_must_stop()) - schedule_timeout_interruptible(HZ); - return 0; + goto wait_for_stop; } VERBOSE_TOROUT_STRING("rcu_torture_cbflood task started"); do { @@ -844,6 +842,7 @@ rcu_torture_cbflood(void *arg) stutter_wait("rcu_torture_cbflood"); } while (!torture_must_stop()); vfree(rhp); +wait_for_stop: torture_kthread_stopping("rcu_torture_cbflood"); return 0; } |