From: wangguangju <wangguangju@hygon.cn>
Date: Thu, 26 Feb 2026 12:22:08 +0000 (+0800)
Subject: perf trace: Fix IS_ERR() vs NULL check bug
X-Git-Tag: v7.1-rc1~91^2~129
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=96f202eab8133f94479b14a32902c636e9bdf6af;p=thirdparty%2Fkernel%2Flinux.git

perf trace: Fix IS_ERR() vs NULL check bug

The alloc_syscall_stats() function always returns an error pointer
(ERR_PTR) on failure.

So replace NULL check with IS_ERR() check after calling
delete_syscall_stats() function.

Fixes: ef2da619b132c6f74 ("perf trace: Convert syscall_stats to hashmap")
Signed-off-by: wangguangju <wangguangju@hygon.cn>
Reviewed-by: Howard Chu <howardchu95@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 311d9da9896a4..295b272c6c299 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1573,7 +1573,7 @@ static void delete_syscall_stats(struct hashmap *syscall_stats)
 	struct hashmap_entry *pos;
 	size_t bkt;
 
-	if (syscall_stats == NULL)
+	if (IS_ERR(syscall_stats))
 		return;
 
 	hashmap__for_each_entry(syscall_stats, pos, bkt)