Hello Martin, These three patches are what I came up with while I was chasing a scsi_device_put() crash. Please consider these for inclusion in the upstream kernel. Thanks, Bart. Bart Van Assche (3): scsi_dh_alua: Check scsi_device_get() return value scsi_dh_alua: Ensure that alua_activate() calls the completion function scsi_dh_alua: Warn if the first argument of alua_rtpg_queue() is NULL drivers/scsi/device_handler/scsi_dh_alua.c | 38 +++++++++++++++++++----------- 1 file changed, 24 insertions(+), 14 deletions(-) -- 2.12.0