From c58ef78b4a79a5cbc9531a74c6e3965ea4c00bc2 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Mon, 23 Feb 2026 21:57:35 +0200
Subject: Harden integration workloads against dropped event flakes

---
 .../cmd/ioworkload/scenario_iouring.go             | 46 ++++++++++++----------
 1 file changed, 25 insertions(+), 21 deletions(-)

(limited to 'integrationtests/cmd/ioworkload/scenario_iouring.go')

diff --git a/integrationtests/cmd/ioworkload/scenario_iouring.go b/integrationtests/cmd/ioworkload/scenario_iouring.go
index b1aac4e..a16d59a 100644
--- a/integrationtests/cmd/ioworkload/scenario_iouring.go
+++ b/integrationtests/cmd/ioworkload/scenario_iouring.go
@@ -80,17 +80,19 @@ func iouringRegister() error {
 // iouringEnterEbadf calls io_uring_enter on an invalid fd.
 // The syscall fails with EBADF, but ior captures the enter_io_uring_enter tracepoint.
 func iouringEnterEbadf() error {
-	_, _, errno := syscall.Syscall6(
-		sysIoUringEnter,
-		99999, // invalid fd
-		0,     // to_submit
-		0,     // min_complete
-		0,     // flags
-		0,     // sig
-		0,     // sz
-	)
-	if errno == 0 {
-		return fmt.Errorf("expected EBADF, but io_uring_enter succeeded")
+	for i := 0; i < 5; i++ {
+		_, _, errno := syscall.Syscall6(
+			sysIoUringEnter,
+			99999, // invalid fd
+			0,     // to_submit
+			0,     // min_complete
+			0,     // flags
+			0,     // sig
+			0,     // sz
+		)
+		if errno == 0 {
+			return fmt.Errorf("expected EBADF, but io_uring_enter succeeded")
+		}
 	}
 	return nil
 }
@@ -98,16 +100,18 @@ func iouringEnterEbadf() error {
 // iouringRegisterEbadf calls io_uring_register on an invalid fd.
 // The syscall fails with EBADF, but ior captures the enter_io_uring_register tracepoint.
 func iouringRegisterEbadf() error {
-	_, _, errno := syscall.Syscall6(
-		sysIoUringRegister,
-		99999, // invalid fd
-		ioringRegisterProbe,
-		0, // arg (NULL)
-		0, // nr_args
-		0, 0,
-	)
-	if errno == 0 {
-		return fmt.Errorf("expected EBADF, but io_uring_register succeeded")
+	for i := 0; i < 5; i++ {
+		_, _, errno := syscall.Syscall6(
+			sysIoUringRegister,
+			99999, // invalid fd
+			ioringRegisterProbe,
+			0, // arg (NULL)
+			0, // nr_args
+			0, 0,
+		)
+		if errno == 0 {
+			return fmt.Errorf("expected EBADF, but io_uring_register succeeded")
+		}
 	}
 	return nil
 }
-- 
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