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author | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-10-16 05:46:58 -0700 |
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committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-12-01 12:45:42 -0800 |
commit | 5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029 (patch) | |
tree | 1e6c017a7408ce8eb59fbb499831b64ec8ddb04d /kernel/rcu | |
parent | 2e57bf97a6856f2dc10fb4377c452cb08f844047 (diff) | |
download | linux-5ac7cdc29897e5fc3f5e214f3f8c8b03ef8d7029.tar.gz |
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>
Diffstat (limited to 'kernel/rcu')
-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; } |