sorry, I generated the diff on the wrong server, slightly safer fix below
diff /n/dump/2019/0205/sys/src/cmd/cifs/main.c /sys/src/cmd/cifs/main.c
261,265c261,264
< if(got >= 2 && strcmp(fi[0].name, ".") == 0 &&
< strcmp(fi[1].name, "..") == 0){
< a->end = (got - 2) * sizeof(FInfo);
< memmove(a->cache, a->cache + sizeof(FInfo)*2,
< a->end - a->off);
---
> while(got > 0 && strcmp(fi[0].name, ".") == 0 ||
> strcmp(fi[0].name, "..") == 0){
> got--;
> a->end = got * sizeof(FInfo);
> memmove(a->cache, a->cache + sizeof(FInfo), a->end -
> a->off);
-Steve
