Patch "selftests: vDSO: skip getrandom test if architecture is unsupported" has been added to the 6.11-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    selftests: vDSO: skip getrandom test if architecture is unsupported

to the 6.11-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-vdso-skip-getrandom-test-if-architecture-i.patch
and it can be found in the queue-6.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5b9342ad3069af81c4d7d7998a90e2066961a737
Author: Jason A. Donenfeld <Jason@xxxxxxxxx>
Date:   Thu Aug 29 20:23:23 2024 +0200

    selftests: vDSO: skip getrandom test if architecture is unsupported
    
    [ Upstream commit f78280b1a3cedd9f68d5f596179675514a15bd1d ]
    
    If the getrandom test compiles for an arch, don't exit fatally if the
    actual cpu it's running on is unsupported.
    
    Suggested-by: Adhemerval Zanella Netto <adhemerval.zanella@xxxxxxxxxx>
    Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
    Stable-dep-of: 6eda706a535c ("selftests: vDSO: fix the way vDSO functions are called for powerpc")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/tools/testing/selftests/vDSO/vdso_test_getrandom.c b/tools/testing/selftests/vDSO/vdso_test_getrandom.c
index 20bbef992c486..5db8ac8999cd0 100644
--- a/tools/testing/selftests/vDSO/vdso_test_getrandom.c
+++ b/tools/testing/selftests/vDSO/vdso_test_getrandom.c
@@ -104,6 +104,7 @@ static void vgetrandom_init(void)
 	const char *version = versions[VDSO_VERSION];
 	const char *name = names[VDSO_NAMES][6];
 	unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
+	size_t ret;
 
 	if (!sysinfo_ehdr) {
 		printf("AT_SYSINFO_EHDR is not present!\n");
@@ -115,7 +116,11 @@ static void vgetrandom_init(void)
 		printf("%s is missing!\n", name);
 		exit(KSFT_FAIL);
 	}
-	if (vgrnd.fn(NULL, 0, 0, &vgrnd.params, ~0UL) != 0) {
+	ret = vgrnd.fn(NULL, 0, 0, &vgrnd.params, ~0UL);
+	if (ret == -ENOSYS) {
+		printf("unsupported architecture\n");
+		exit(KSFT_SKIP);
+	} else if (ret) {
 		printf("failed to fetch vgetrandom params!\n");
 		exit(KSFT_FAIL);
 	}