DEBUG: fd: detect possibly invalid tgid in fd_insert()
Since the API is still a bit young, let's make sure nobody tries to
assign and FD to a group not strictly 1..MAX_TGROUPS as that would
indicate a bug.
Note: some of these might be relaxed to BUG_ON_HOT() in the future
diff --git a/include/haproxy/fd.h b/include/haproxy/fd.h
index b57076b..e8ef4f3 100644
--- a/include/haproxy/fd.h
+++ b/include/haproxy/fd.h
@@ -436,6 +436,7 @@
BUG_ON(fd < 0 || fd >= global.maxsock);
BUG_ON(fdtab[fd].owner != NULL);
BUG_ON(fdtab[fd].state != 0);
+ BUG_ON(tgid < 1 || tgid > MAX_TGROUPS);
thread_mask &= tg->threads_enabled;
BUG_ON(thread_mask == 0);