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-rw-r--r--pkg/sentry/strace/select.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/strace/select.go b/pkg/sentry/strace/select.go
index dea309fda..c77d418e6 100644
--- a/pkg/sentry/strace/select.go
+++ b/pkg/sentry/strace/select.go
@@ -36,6 +36,9 @@ func fdsFromSet(t *kernel.Task, set []byte) []int {
}
func fdSet(t *kernel.Task, nfds int, addr usermem.Addr) string {
+ if nfds < 0 {
+ return fmt.Sprintf("%#x (negative nfds)", addr)
+ }
if addr == 0 {
return "null"
}