This is a note to let you know that I've just added the patch titled
kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kmemleak-fix-the-kmemleak-tracking-of-the-percpu-areas-with-smp.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 100d13c3b5b9410f604b86f5e0a34da64b8cf659 Mon Sep 17 00:00:00 2001
From: Catalin Marinas <[email protected]>
Date: Wed, 9 May 2012 16:55:19 +0100
Subject: kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP
From: Catalin Marinas <[email protected]>
commit 100d13c3b5b9410f604b86f5e0a34da64b8cf659 upstream.
Kmemleak tracks the percpu allocations via a specific API and the
originally allocated areas must be removed from kmemleak (via
kmemleak_free). The code was already doing this for SMP systems.
Reported-by: Sami Liedes <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Christoph Lameter <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
mm/percpu.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1873,6 +1873,8 @@ void __init setup_per_cpu_areas(void)
fc = __alloc_bootmem(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
if (!ai || !fc)
panic("Failed to allocate memory for percpu areas.");
+ /* kmemleak tracks the percpu allocations separately */
+ kmemleak_free(fc);
ai->dyn_size = unit_size;
ai->unit_size = unit_size;
Patches currently in stable-queue which might be from [email protected]
are
queue-3.0/kmemleak-fix-the-kmemleak-tracking-of-the-percpu-areas-with-smp.patch
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