* FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 5.15-stable tree
@ 2022-02-28 8:58 gregkh
2022-02-28 9:34 ` Mike Rapoport
0 siblings, 1 reply; 3+ messages in thread
From: gregkh @ 2022-02-28 8:58 UTC (permalink / raw)
To: linmiaohe, rppt; +Cc: stable
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c94afc46cae7ad41b2ad6a99368147879f4b0e56 Mon Sep 17 00:00:00 2001
From: Miaohe Lin <linmiaohe@huawei.com>
Date: Thu, 17 Feb 2022 22:53:27 +0800
Subject: [PATCH] memblock: use kfree() to release kmalloced memblock regions
memblock.{reserved,memory}.regions may be allocated using kmalloc() in
memblock_double_array(). Use kfree() to release these kmalloced regions
indicated by memblock_{reserved,memory}_in_slab.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Fixes: 3010f876500f ("mm: discard memblock data later")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
diff --git a/mm/memblock.c b/mm/memblock.c
index 1018e50566f3..b12a364f2766 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -366,14 +366,20 @@ void __init memblock_discard(void)
addr = __pa(memblock.reserved.regions);
size = PAGE_ALIGN(sizeof(struct memblock_region) *
memblock.reserved.max);
- memblock_free_late(addr, size);
+ if (memblock_reserved_in_slab)
+ kfree(memblock.reserved.regions);
+ else
+ memblock_free_late(addr, size);
}
if (memblock.memory.regions != memblock_memory_init_regions) {
addr = __pa(memblock.memory.regions);
size = PAGE_ALIGN(sizeof(struct memblock_region) *
memblock.memory.max);
- memblock_free_late(addr, size);
+ if (memblock_memory_in_slab)
+ kfree(memblock.memory.regions);
+ else
+ memblock_free_late(addr, size);
}
memblock_memory = NULL;
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 5.15-stable tree
2022-02-28 8:58 FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 5.15-stable tree gregkh
@ 2022-02-28 9:34 ` Mike Rapoport
2022-02-28 10:55 ` Greg KH
0 siblings, 1 reply; 3+ messages in thread
From: Mike Rapoport @ 2022-02-28 9:34 UTC (permalink / raw)
To: gregkh; +Cc: linmiaohe, stable
On Mon, Feb 28, 2022 at 09:58:43AM +0100, gregkh@linuxfoundation.org wrote:
>
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@vger.kernel.org>.
This version applies to 5.15 and should apply to older version as well.
From d4895990ebea634715d2dcf54121c5ae5a6612bc Mon Sep 17 00:00:00 2001
From: Miaohe Lin <linmiaohe@huawei.com>
Date: Thu, 17 Feb 2022 22:53:27 +0800
Subject: [PATCH] memblock: use kfree() to release kmalloced memblock regions
memblock.{reserved,memory}.regions may be allocated using kmalloc() in
memblock_double_array(). Use kfree() to release these kmalloced regions
indicated by memblock_{reserved,memory}_in_slab.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Fixes: 3010f876500f ("mm: discard memblock data later")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
mm/memblock.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index 5096500b2647..2b7397781c99 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -366,14 +366,20 @@ void __init memblock_discard(void)
addr = __pa(memblock.reserved.regions);
size = PAGE_ALIGN(sizeof(struct memblock_region) *
memblock.reserved.max);
- __memblock_free_late(addr, size);
+ if (memblock_reserved_in_slab)
+ kfree(memblock.reserved.regions);
+ else
+ __memblock_free_late(addr, size);
}
if (memblock.memory.regions != memblock_memory_init_regions) {
addr = __pa(memblock.memory.regions);
size = PAGE_ALIGN(sizeof(struct memblock_region) *
memblock.memory.max);
- __memblock_free_late(addr, size);
+ if (memblock_memory_in_slab)
+ kfree(memblock.memory.regions);
+ else
+ __memblock_free_late(addr, size);
}
memblock_memory = NULL;
--
2.28.0
> thanks,
>
> greg k-h
--
Sincerely yours,
Mike.
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 5.15-stable tree
2022-02-28 9:34 ` Mike Rapoport
@ 2022-02-28 10:55 ` Greg KH
0 siblings, 0 replies; 3+ messages in thread
From: Greg KH @ 2022-02-28 10:55 UTC (permalink / raw)
To: Mike Rapoport; +Cc: linmiaohe, stable
On Mon, Feb 28, 2022 at 11:34:16AM +0200, Mike Rapoport wrote:
> On Mon, Feb 28, 2022 at 09:58:43AM +0100, gregkh@linuxfoundation.org wrote:
> >
> > The patch below does not apply to the 5.15-stable tree.
> > If someone wants it applied there, or to any other stable or longterm
> > tree, then please email the backport, including the original git commit
> > id to <stable@vger.kernel.org>.
>
> This version applies to 5.15 and should apply to older version as well.
>
> >From d4895990ebea634715d2dcf54121c5ae5a6612bc Mon Sep 17 00:00:00 2001
> From: Miaohe Lin <linmiaohe@huawei.com>
> Date: Thu, 17 Feb 2022 22:53:27 +0800
> Subject: [PATCH] memblock: use kfree() to release kmalloced memblock regions
>
> memblock.{reserved,memory}.regions may be allocated using kmalloc() in
> memblock_double_array(). Use kfree() to release these kmalloced regions
> indicated by memblock_{reserved,memory}_in_slab.
>
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
> Fixes: 3010f876500f ("mm: discard memblock data later")
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
> mm/memblock.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
Now queued up, thanks.
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-02-28 10:58 UTC | newest]
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2022-02-28 8:58 FAILED: patch "[PATCH] memblock: use kfree() to release kmalloced memblock regions" failed to apply to 5.15-stable tree gregkh
2022-02-28 9:34 ` Mike Rapoport
2022-02-28 10:55 ` Greg KH
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