linux-kernel - [PATCH -next] trace.h: Use memset_startat helper in trace_iterator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20211210012245.207489-1-xiujianfeng@huawei.com>
Date:   Fri, 10 Dec 2021 09:22:45 +0800
From:   Xiu Jianfeng <xiujianfeng@...wei.com>
To:     <rostedt@...dmis.org>, <mingo@...hat.com>,
        <miguel.ojeda.sandonis@...il.com>
CC:     <linux-kernel@...r.kernel.org>, <wangweiyang2@...wei.com>
Subject: [PATCH -next] trace.h: Use memset_startat helper in trace_iterator_reset

Make use of memset_startat helper to simplify the code, there should be
no functional change as a result of this patch.

Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
---
 kernel/trace/trace.h | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 38715aa6cfdf..cde9c0710317 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1926,14 +1926,7 @@ extern struct trace_iterator *tracepoint_print_iter;
  */
 static __always_inline void trace_iterator_reset(struct trace_iterator *iter)
 {
-	const size_t offset = offsetof(struct trace_iterator, seq);
-
-	/*
-	 * Keep gcc from complaining about overwriting more than just one
-	 * member in the structure.
-	 */
-	memset((char *)iter + offset, 0, sizeof(struct trace_iterator) - offset);
-
+	memset_startat(iter, 0, seq);
 	iter->pos = -1;
 }
 
-- 
2.17.1