It was found that lockdep splat was produced whenever the ww_mutex locktorture test was run on a kernel with lockdep enabled. It turns out that there are bugs both in the ww_mutex and the locktorture code. This patch series fix these bugs so that the ww_mutex locktorture test is able to run without producing unexpected lockdep splat.
Patches 1 & 2 are clean-up patches for ww_mutex. Patch 3 fixes the lockdep bug in ww_mutex and patch 4 fixes a bug in the locktorture code. Waiman Long (4): locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling locking/ww_mutex: Fix acquire/release imbalance in ww_acquire_init()/ww_acquire_fini() locking/ww_mutex: Treat ww_mutex_lock() like a trylock locking/locktorture: Fix incorrect use of ww_acquire_ctx in ww_mutex test include/linux/ww_mutex.h | 5 ++- kernel/locking/locktorture.c | 86 +++++++++++++++++++++++------------- kernel/locking/mutex.c | 30 ++++++++----- 3 files changed, 77 insertions(+), 44 deletions(-) -- 2.18.1