linux-kernel - [PATCH 01/16] vmalloc: fix use of non-existent percpu variable in put_cpu

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Date:	Wed, 14 Oct 2009 15:01:50 +0900
From:	Tejun Heo <tj@...nel.org>
To:	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au,
	cl@...ux-foundation.org, mingo@...hat.com, tglx@...utronix.de,
	akpm@...ux-foundation.org, rostedt@...dmis.org, hpa@...or.com,
	cebbert@...hat.com
Cc:	Tejun Heo <tj@...nel.org>, Nick Piggin <npiggin@...e.de>
Subject: [PATCH 01/16] vmalloc: fix use of non-existent percpu variable in put_cpu_var()

vmalloc used non-existent percpu variable vmap_cpu_blocks instead of
the intended vmap_block_queue.  This went unnoticed because
put_cpu_var() didn't evaluate the parameter.  Fix it.

Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: Nick Piggin <npiggin@...e.de>
---
 mm/vmalloc.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 69511e6..b65cfe4 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -760,7 +760,7 @@ static struct vmap_block *new_vmap_block(gfp_t gfp_mask)
 	spin_lock(&vbq->lock);
 	list_add(&vb->free_list, &vbq->free);
 	spin_unlock(&vbq->lock);
-	put_cpu_var(vmap_cpu_blocks);
+	put_cpu_var(vmap_block_queue);
 
 	return vb;
 }
@@ -825,7 +825,7 @@ again:
 		}
 		spin_unlock(&vb->lock);
 	}
-	put_cpu_var(vmap_cpu_blocks);
+	put_cpu_var(vmap_block_queue);
 	rcu_read_unlock();
 
 	if (!addr) {
-- 
1.6.4.2

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