The patch titled
Subject: mm/vmalloc.c: move 'area->pages' after if statement
has been added to the -mm tree. Its filename is
mm-vmalloc-move-area-pages-after-if-statement.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-move-area-pages-after-if-statement.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-move-area-pages-after-if-statement.patch
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------------------------------------------------------
From: Austin Kim <austindh.kim@xxxxxxxxx>
Subject: mm/vmalloc.c: move 'area->pages' after if statement
If !area->pages statement is true where memory allocation fails, area is
freed.
In this case 'area->pages = pages' should not executed. So move
'area->pages = pages' after if statement.
Link: http://lkml.kernel.org/r/20190830035716.GA190684@LGEARND20B15
Signed-off-by: Austin Kim <austindh.kim@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Roman Gushchin <guro@xxxxxx>
Cc: Roman Penyaev <rpenyaev@xxxxxxx>
Cc: Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/mm/vmalloc.c~mm-vmalloc-move-area-pages-after-if-statement
+++ a/mm/vmalloc.c
@@ -2417,13 +2417,15 @@ static void *__vmalloc_area_node(struct
} else {
pages = kmalloc_node(array_size, nested_gfp, node);
}
- area->pages = pages;
- if (!area->pages) {
+
+ if (!pages) {
remove_vm_area(area->addr);
kfree(area);
return NULL;
}
+ area->pages = pages;
+
for (i = 0; i < area->nr_pages; i++) {
struct page *page;
_
Patches currently in -mm which might be from austindh.kim@xxxxxxxxx are
mm-vmalloc-move-area-pages-after-if-statement.patch
