Module Name: src
Committed By: martin
Date: Fri Jan 1 18:58:58 UTC 2016
Modified Files:
src/sys/kern: vfs_bio.c
Log Message:
KASSERT->KASSERTMSG to allow debugging a double-free'd buffer in ddb.
To generate a diff of this commit:
cvs rdiff -u -r1.256 -r1.257 src/sys/kern/vfs_bio.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/kern/vfs_bio.c
diff -u src/sys/kern/vfs_bio.c:1.256 src/sys/kern/vfs_bio.c:1.257
--- src/sys/kern/vfs_bio.c:1.256 Mon Aug 24 22:50:32 2015
+++ src/sys/kern/vfs_bio.c Fri Jan 1 18:58:58 2016
@@ -1,4 +1,4 @@
-/* $NetBSD: vfs_bio.c,v 1.256 2015/08/24 22:50:32 pooka Exp $ */
+/* $NetBSD: vfs_bio.c,v 1.257 2016/01/01 18:58:58 martin Exp $ */
/*-
* Copyright (c) 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -123,7 +123,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.256 2015/08/24 22:50:32 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.257 2016/01/01 18:58:58 martin Exp $");
#ifdef _KERNEL_OPT
#include "opt_bufcache.h"
@@ -328,7 +328,8 @@ binstailfree(buf_t *bp, struct bqueue *d
{
KASSERT(mutex_owned(&bufcache_lock));
- KASSERT(bp->b_freelistindex == -1);
+ KASSERTMSG(bp->b_freelistindex == -1, "double free of buffer? "
+ "bp=%p, b_freelistindex=%d\n", bp, bp->b_freelistindex);
TAILQ_INSERT_TAIL(&dp->bq_queue, bp, b_freelist);
dp->bq_bytes += bp->b_bufsize;
bp->b_freelistindex = dp - bufqueues;
