* [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch
@ 2021-03-25 11:31 Wang Wensheng
2021-03-25 12:45 ` David Hildenbrand
2021-03-25 13:21 ` Oscar Salvador
0 siblings, 2 replies; 5+ messages in thread
From: Wang Wensheng @ 2021-03-25 11:31 UTC (permalink / raw)
To: akpm, osalvador, pasha.tatashin, linux-mm, linux-kernel; +Cc: rui.xiang
sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
a WARN issue would be through the next time sparse_buffer_init() runs.
Add the missing sparse_buffer_fini() in error branch.
Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
---
mm/sparse.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/sparse.c b/mm/sparse.c
index 7bd23f9..33406ea 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
__func__, nid);
pnum_begin = pnum;
+ sparse_buffer_fini();
goto failed;
}
check_usemap_section_nr(nid, usage);
--
2.9.4
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch
2021-03-25 11:31 [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch Wang Wensheng
@ 2021-03-25 12:45 ` David Hildenbrand
2021-03-25 13:21 ` Oscar Salvador
1 sibling, 0 replies; 5+ messages in thread
From: David Hildenbrand @ 2021-03-25 12:45 UTC (permalink / raw)
To: Wang Wensheng, akpm, osalvador, pasha.tatashin, linux-mm, linux-kernel
Cc: rui.xiang
On 25.03.21 12:31, Wang Wensheng wrote:
> sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
> a WARN issue would be through the next time sparse_buffer_init() runs.
>
> Add the missing sparse_buffer_fini() in error branch.
>
> Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
> Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
> ---
> mm/sparse.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/sparse.c b/mm/sparse.c
> index 7bd23f9..33406ea 100644
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
> pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
> __func__, nid);
> pnum_begin = pnum;
> + sparse_buffer_fini();
> goto failed;
> }
> check_usemap_section_nr(nid, usage);
>
Did you actually manage to reproduce this? I would have thought that
__populate_section_memmap() barely fails during boot ...
Anyhow, looks like the right think to do to me
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Thanks,
David / dhildenb
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch
2021-03-25 11:31 [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch Wang Wensheng
2021-03-25 12:45 ` David Hildenbrand
@ 2021-03-25 13:21 ` Oscar Salvador
1 sibling, 0 replies; 5+ messages in thread
From: Oscar Salvador @ 2021-03-25 13:21 UTC (permalink / raw)
To: Wang Wensheng; +Cc: akpm, pasha.tatashin, linux-mm, linux-kernel, rui.xiang
On Thu, Mar 25, 2021 at 11:31:55AM +0000, Wang Wensheng wrote:
> sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
> a WARN issue would be through the next time sparse_buffer_init() runs.
>
> Add the missing sparse_buffer_fini() in error branch.
>
> Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
> Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
--
Oscar Salvador
SUSE L3
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch
@ 2021-03-26 2:23 Wang Wensheng
2021-03-26 9:11 ` David Hildenbrand
0 siblings, 1 reply; 5+ messages in thread
From: Wang Wensheng @ 2021-03-26 2:23 UTC (permalink / raw)
To: akpm, pasha.tatashin, osalvador, linux-mm, linux-kernel; +Cc: rui.xiang
sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
a WARN issue would be through the next time sparse_buffer_init() runs.
Add the missing sparse_buffer_fini() in error branch.
Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
---
mm/sparse.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/sparse.c b/mm/sparse.c
index 7bd23f9..33406ea 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
__func__, nid);
pnum_begin = pnum;
+ sparse_buffer_fini();
goto failed;
}
check_usemap_section_nr(nid, usage);
--
2.9.4
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch
2021-03-26 2:23 Wang Wensheng
@ 2021-03-26 9:11 ` David Hildenbrand
0 siblings, 0 replies; 5+ messages in thread
From: David Hildenbrand @ 2021-03-26 9:11 UTC (permalink / raw)
To: Wang Wensheng, akpm, pasha.tatashin, osalvador, linux-mm, linux-kernel
Cc: rui.xiang
On 26.03.21 03:23, Wang Wensheng wrote:
> sparse_buffer_init() and sparse_buffer_fini() should appear in pair, or
> a WARN issue would be through the next time sparse_buffer_init() runs.
>
> Add the missing sparse_buffer_fini() in error branch.
>
> Fixes: 85c77f791390 ("mm/sparse: add new sparse_init_nid() and sparse_init()")
> Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
> ---
> mm/sparse.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/sparse.c b/mm/sparse.c
> index 7bd23f9..33406ea 100644
> --- a/mm/sparse.c
> +++ b/mm/sparse.c
> @@ -547,6 +547,7 @@ static void __init sparse_init_nid(int nid, unsigned long pnum_begin,
> pr_err("%s: node[%d] memory map backing failed. Some memory will not be available.",
> __func__, nid);
> pnum_begin = pnum;
> + sparse_buffer_fini();
> goto failed;
> }
> check_usemap_section_nr(nid, usage);
>
I am confused, why the resend, and why without RBs?
https://lkml.kernel.org/r/20210325113155.118574-1-wangwensheng4@huawei.com
--
Thanks,
David / dhildenb
^ permalink raw reply [flat|nested] 5+ messages in thread
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2021-03-25 11:31 [PATCH] mm/sparse: Add the missing sparse_buffer_fini() in error branch Wang Wensheng
2021-03-25 12:45 ` David Hildenbrand
2021-03-25 13:21 ` Oscar Salvador
2021-03-26 2:23 Wang Wensheng
2021-03-26 9:11 ` David Hildenbrand
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