[PATCH] perf: arm-spe: Fix null-ptr-deref in arm_spe__alloc_metadata()

[Nihar Chaithanya]

When metadata is allocated using arm_spe__alloc_metadata(), if the
metadata version is 1, metadata is returned as NULL. This value
is dereferenced later in arm_spe__free_metadata() and it can cause
null-ptr-deref.

Modify the NULL check for metadata to return -EINVAL even when
metadata_ver == 1.

This issue was reported by Coverity scan [1].
[1] https://scan5.scan.coverity.com/#/project-view/63616/10063?selectedIssue=1636359

Closes: https://scan5.scan.coverity.com/#/project-view/63616/10063?selectedIssue=1636359
Signed-off-by: Nihar Chaithanya <niharchaithanya at gmail.com>
---
 tools/perf/util/arm-spe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index dbf13f47879c..55827d8ce133 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -1497,7 +1497,7 @@ int arm_spe_process_auxtrace_info(union perf_event *event,
 
 	metadata = arm_spe__alloc_metadata(auxtrace_info, &metadata_ver,
 					   &nr_cpu);
-	if (!metadata && metadata_ver != 1) {
+	if (!metadata) {
 		pr_err("Failed to parse Arm SPE metadata.\n");
 		return -EINVAL;
 	}
-- 
2.34.1