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| author |   Paul E. McKenney <paulmck@linux.ibm.com> | 2018-10-16 05:46:58 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-12-01 12:45:42 -0800 |
| commit | 5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029 (patch) | |
| tree | 1e6c017a7408ce8eb59fbb499831b64ec8ddb04d | |
| parent | rcutorture: Use 100ms buckets for forward-progress callback histograms (diff) | |
| download | linux-dev-5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029.tar.xz linux-dev-5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029.zip | |
rcutorture: Don't do busted forward-progress testing
The "busted" rcutorture type is an intentionally broken implementation
of RCU. Doing forward-progress testing on this implementation is not
particularly meaningful on the one hand and can result in fatal abuse
of the memory allocator on the other. This commit therefore disables
forward-progress testing of the "busted" rcutorture type.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
| -rw-r--r-- | kernel/rcu/rcutorture.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index a4c4a24bdcaa..f6e85faa4ff4 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1900,7 +1900,8 @@ static int __init rcu_torture_fwd_prog_init(void) { if (!fwd_progress) return 0; /* Not requested, so don't do it. */ - if (!cur_ops->stall_dur || cur_ops->stall_dur() <= 0) { + if (!cur_ops->stall_dur || cur_ops->stall_dur() <= 0 || + cur_ops == &rcu_busted_ops) { VERBOSE_TOROUT_STRING("rcu_torture_fwd_prog_init: Disabled, unsupported by RCU flavor under test"); return 0; } |