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Date:	Mon, 29 Mar 2010 16:02:48 +1100
From:	Stephen Rothwell <>
To:	Tejun Heo <>
	Jason Wessel <>,
	Martin Hicks <>
Subject: linux-next: build failure after merge of the slabh tree

Hi Tejun,

After merging the slabh tree, today's linux-next build (x86_64
allmodconfig) failed like this:

kernel/debug/kdb/kdb_support.c: In function 'kdb_strdup':
kernel/debug/kdb/kdb_support.c:309: error: implicit declaration of function 'kmalloc'
kernel/debug/kdb/kdb_support.c:309: warning: initialization makes pointer from integer without a cast
kernel/debug/kdb/kdb_support.c: In function 'debug_kfree':
kernel/debug/kdb/kdb_support.c:810: error: implicit declaration of function 'kfree'

Caused by commit d103d3b3e8512312b5254950035366d4422a479a ("percpu: don't
implicitly include slab.h from percpu.h") from the slabh tree interacting
with commit 5572dd736e5577dfefafe2ad3b54760e8323e33d ("kdb: core for kgdb
back end (1 of 2)") from the kgdb tree.

I applied the following merge fixup patch which should be applied to the
kdbg tree (see Documentation/SubmitChecklist Rule #1 :-)).

From: Stephen Rothwell <>
Date: Mon, 29 Mar 2010 15:49:05 +1100
Subject: [PATCH] kgdb: use of kmalloc/kfree requires the include of slab.h

Signed-off-by: Stephen Rothwell <>
 kernel/debug/kdb/kdb_support.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 788dbfe..45344d5 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/uaccess.h>
 #include <linux/kdb.h>
+#include <linux/slab.h>
 #include "kdb_private.h"

Stephen Rothwell          
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