mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Julia Lawall <julia@diku.dk>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH 12/12] tools/perf: Correct size given to memset
Date: Wed, 9 Dec 2009 20:26:18 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.64.0912092026000.1870@ask.diku.dk> (raw)

From: Julia Lawall <julia@diku.dk>

Memset should be given the size of the structure, not the size of the pointer.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
type T;
T *x;
expression E;
@@

memset(x, E, sizeof(
+ *
 x))
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
 tools/perf/util/probe-event.c       |    2 +-
 tools/perf/util/trace-event-parse.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff -u -p a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -376,7 +376,7 @@ static void clear_probe_point(struct pro
 		free(pp->args);
 	for (i = 0; i < pp->found; i++)
 		free(pp->probes[i]);
-	memset(pp, 0, sizeof(pp));
+	memset(pp, 0, sizeof(*pp));
 }
 
 /* List up current perf-probe events */
diff -u -p a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1477,7 +1477,7 @@ process_fields(struct event *event, stru
 			goto out_free;
 
 		field = malloc_or_die(sizeof(*field));
-		memset(field, 0, sizeof(field));
+		memset(field, 0, sizeof(*field));
 
 		value = arg_eval(arg);
 		field->value = strdup(value);

             reply	other threads:[~2009-12-09 19:26 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-12-09 19:26 Julia Lawall [this message]
2009-12-10  7:50 ` [tip:perf/urgent] perf tools: " tip-bot for Julia Lawall

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Pine.LNX.4.64.0912092026000.1870@ask.diku.dk \
    --to=julia@diku.dk \
    --cc=a.p.zijlstra@chello.nl \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=paulus@samba.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®