[to-be-updated] mm-balloon_compaction-ignore-anonymous-pages.patch removed from -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The patch titled
     Subject: mm/balloon_compaction: ignore anonymous pages
has been removed from the -mm tree.  Its filename was
     mm-balloon_compaction-ignore-anonymous-pages.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
From: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx>
Subject: mm/balloon_compaction: ignore anonymous pages

Sasha Levin reported KASAN splash inside isolate_migratepages_range(). 
Problem is in function __is_movable_balloon_page() which tests
AS_BALLOON_MAP in page->mapping->flags.  This function has no protection
against anonymous pages.  As result it tried to check address space flags
in inside anon-vma.

See http://lkml.kernel.org/p/53E6CEAA.9020105@xxxxxxxxxx.

Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx>
Reported-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
Acked-by: Rafael Aquini <aquini@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>	[v3.8+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/linux/balloon_compaction.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN include/linux/balloon_compaction.h~mm-balloon_compaction-ignore-anonymous-pages include/linux/balloon_compaction.h
--- a/include/linux/balloon_compaction.h~mm-balloon_compaction-ignore-anonymous-pages
+++ a/include/linux/balloon_compaction.h
@@ -128,7 +128,7 @@ static inline bool page_flags_cleared(st
 static inline bool __is_movable_balloon_page(struct page *page)
 {
 	struct address_space *mapping = page->mapping;
-	return mapping_balloon(mapping);
+	return !PageAnon(page) && mapping_balloon(mapping);
 }
 
 /*
_

Patches currently in -mm which might be from k.khlebnikov@xxxxxxxxxxx are

include-linux-migrateh-remove-migratepage-define.patch
mm-balloon_compaction-keep-ballooned-pages-away-from-normal-migration-path.patch
mm-balloon_compaction-isolate-balloon-pages-without-lru_lock.patch
mm-introduce-common-page-state-for-ballooned-memory.patch
mm-balloon_compaction-use-common-page-ballooning.patch
mm-balloon_compaction-general-cleanup.patch
linux-next.patch

--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]