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: <1349354174-5560-1-git-send-email-elezegarcia@gmail.com>
Date:	Thu,  4 Oct 2012 09:36:14 -0300
From:	Ezequiel Garcia <elezegarcia@...il.com>
To:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Cc:	Tim Bird <tim.bird@...sony.com>,
	Ezequiel Garcia <elezegarcia@...il.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] lib: Use kmalloc_track_caller to get accurate traces for kvasprintf

Previously kvasprintf allocation was being done through kmalloc,
thus producing an unaccurate trace report.

This is a common problem: in order to get accurate callsite tracing,
a lib/utils function shouldn't allocate kmalloc but instead
use kmalloc_track_caller.

Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Ezequiel Garcia <elezegarcia@...il.com>
---
 lib/kasprintf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index ae0de80..32f1215 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -21,7 +21,7 @@ char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
 	len = vsnprintf(NULL, 0, fmt, aq);
 	va_end(aq);
 
-	p = kmalloc(len+1, gfp);
+	p = kmalloc_track_caller(len+1, gfp);
 	if (!p)
 		return NULL;
 
-- 
1.7.8.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ