From: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
Subject: [Devel] [PATCH vz10] selftests/uevent: give the netlink socket a usable receive buffer
Date: Fri, 21 Aug 2026 18:03:58 +0300 [thread overview]
Message-ID: <20260821150402.792278-1-eva.kurchatova@virtuozzo.com> (raw)
SO_RCVBUF is set to __UEVENT_BUFFER_SIZE, 4KB, which a busy machine
overruns while the test is listening:
No buffer space available - Failed to receive uevent
https://virtuozzo.atlassian.net/browse/VSTOR-139674
Feature: fix selftests
Signed-off-by: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
---
tools/testing/selftests/uevent/uevent_filtering.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/uevent/uevent_filtering.c b/tools/testing/selftests/uevent/uevent_filtering.c
index 8062804ff759..3b504c9e645d 100644
--- a/tools/testing/selftests/uevent/uevent_filtering.c
+++ b/tools/testing/selftests/uevent/uevent_filtering.c
@@ -22,7 +22,7 @@
#include "../kselftest_harness.h"
#define __DEV_FULL "/sys/devices/virtual/mem/full/uevent"
-#define __UEVENT_BUFFER_SIZE (2048 * 2)
+#define __UEVENT_BUFFER_SIZE (2048 * 64)
#define __UEVENT_HEADER "add@/devices/virtual/mem/full"
#define __UEVENT_HEADER_LEN sizeof("add@/devices/virtual/mem/full")
#define __UEVENT_LISTEN_ALL -1
--
2.55.0
next reply other threads:[~2026-08-21 15:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-21 15:03 Eva Kurchatova [this message]
2026-08-24 8:34 ` Vasileios Almpanis
2026-08-24 13:09 ` [Devel] [PATCH vz10 v2] selftests/uevent: do not fail on a netlink receive buffer overrun Konstantin Khorenko
2026-08-26 16:49 ` Konstantin Khorenko
2026-08-26 19:32 ` Eva Kurchatova (Virtuozzo)
2026-08-27 12:28 ` [Devel] [PATCH RHEL10 COMMIT] " Konstantin Khorenko
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