From be1679e5ed634a22fae78d4c3e57e4ef65681682 Mon Sep 17 00:00:00 2001
From: Lionel Debroux <lionel_debroux@yahoo.fr>
Date: Sun, 4 May 2025 20:52:53 +0200
Subject: [PATCH] test/libc: fix cachestat() test on recent Linux kernels.

On Linux kernels which contain the fix for CVE-2025-21691, i.e.
5f537664e705b0bf8b7e329861f20128534f6a83 or its backports such as
780ab8329672464984cf1344bd5c3993af0226c7 , cachestat() requires
that the file is writable or owned.
Use /proc/self/comm instead of /proc/version and /proc.

Signed-off-by: Lionel Debroux <lionel_debroux@yahoo.fr>
---
 test/libc/calls/cachestat_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/libc/calls/cachestat_test.c b/test/libc/calls/cachestat_test.c
index 92805dfee..3d4843097 100644
--- a/test/libc/calls/cachestat_test.c
+++ b/test/libc/calls/cachestat_test.c
@@ -53,7 +53,7 @@ void SetUpOnce(void) {
 
 TEST(cachestat, testCachestatOnDevices) {
   const char *const files[] = {
-      "/dev/zero", "/dev/null", "/dev/urandom", "/proc/version", "/proc",
+      "/dev/zero", "/dev/null", "/dev/urandom", "/proc/self/comm",
   };
   struct cachestat_range range = {0, 4 * pagesize};
   struct cachestat cs;