pathtrace: limit amount of checked poll fds similarly to select limit

* pathtrace.c (pathtrace_match_set): Limit the maximum descriptor number
checked for fd match in poll family syscalls to 1024 * 1024.

diff --git a/pathtrace.c b/pathtrace.c
index 4585e26d218d889e254657bf492178b45d50e5a7..b0dd8f991cf5a4fc71c58c1217e10590b704507c 100644 (file)
--- a/pathtrace.c
+++ b/pathtrace.c
@@ -323,6 +323,8 @@ pathtrace_match_set(struct tcb *tcp, struct path_set *set)
                start = tcp->u_arg[0];
                nfds = tcp->u_arg[1];
 
+               if (nfds > 1024 * 1024)
+                       nfds = 1024 * 1024;
                end = start + sizeof(fds) * nfds;
 
                if (nfds == 0 || end < start)