Module Name: src
Committed By: riastradh
Date: Sat Jul 29 02:21:30 UTC 2017
Modified Files:
src/sys/arch/newsmips/apbus: if_sn.c
Log Message:
Avoid memory leak in sonic_get.
If this is the first time around, top is null and nothing else will
free m.
>From Ilja Van Sprundel.
To generate a diff of this commit:
cvs rdiff -u -r1.38 -r1.39 src/sys/arch/newsmips/apbus/if_sn.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/newsmips/apbus/if_sn.c
diff -u src/sys/arch/newsmips/apbus/if_sn.c:1.38 src/sys/arch/newsmips/apbus/if_sn.c:1.39
--- src/sys/arch/newsmips/apbus/if_sn.c:1.38 Wed Feb 22 09:45:16 2017
+++ src/sys/arch/newsmips/apbus/if_sn.c Sat Jul 29 02:21:30 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: if_sn.c,v 1.38 2017/02/22 09:45:16 nonaka Exp $ */
+/* $NetBSD: if_sn.c,v 1.39 2017/07/29 02:21:30 riastradh Exp $ */
/*
* National Semiconductor DP8393X SONIC Driver
@@ -16,7 +16,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_sn.c,v 1.38 2017/02/22 09:45:16 nonaka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_sn.c,v 1.39 2017/07/29 02:21:30 riastradh Exp $");
#include "opt_inet.h"
@@ -1090,7 +1090,10 @@ sonic_get(struct sn_softc *sc, void *pkt
if (datalen >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
- if (top) m_freem(top);
+ if (top)
+ m_freem(top);
+ else
+ m_freem(m);
return 0;
}
len = MCLBYTES;
