Hi, sparse (0.6.0) seems to have problems with container_of(). My x86_64 allmodconfig build has 88 warnings like these: ../kernel/bpf/verifier.c:7701:39: warning: unknown expression (4 0) ../include/linux/genhd.h:221:32: warning: unknown expression (4 0) ../fs/proc/array.c:686:32: warning: unknown expression (4 0) ../drivers/infiniband/hw/hns/hns_roce_device.h:1003:16: warning: unknown expression (4 0) cheers. -- ~Randy