My original patch (https://lkml.org/lkml/2018/4/4/447) to fix this isse probably won't work. This is my second attempt to fix it. I don't have the setup to reproduce the problem. Could someone try it to see if it can eliminate the warning? Waiman Long (2): locking/rwsem: Add a new RWSEM_WRITER_OWNED_NOSPIN flag locking/percpu-rwsem: Mark rwsem as non-spinnable in percpu_rwsem_release() include/linux/percpu-rwsem.h | 6 +++--- include/linux/rwsem.h | 10 ++++++++++ kernel/locking/rwsem-xadd.c | 17 ++++++++--------- kernel/locking/rwsem.c | 16 +++++++++++++++- kernel/locking/rwsem.h | 37 ++++++++++++++++++++++++++++++------- 5 files changed, 66 insertions(+), 20 deletions(-) -- 1.8.3.1
