zfree 10 tools/include/linux/zalloc.h #define zfree(ptr) __zfree((void **)(ptr)) zfree 112 tools/lib/bpf/libbpf.c # define zfree(ptr) ({ free(*ptr); *ptr = NULL; }) zfree 28 tools/lib/subcmd/subcmd-util.h #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })