The patch titled
Subject: mm/memory.c: make apply_to_page_range() more robust
has been added to the -mm tree. Its filename is
make-apply_to_page_range-more-robust.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/make-apply_to_page_range-more-robust.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/make-apply_to_page_range-more-robust.patch
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------------------------------------------------------
From: Mika Penttilä <mika.penttila@xxxxxxxxxxxx>
Subject: mm/memory.c: make apply_to_page_range() more robust
Arm and arm64 used to trigger this BUG_ON() - this has now been fixed.
But a WARN_ON() here is sufficient to catch future buggy callers.
Signed-off-by: Mika Penttilä <mika.penttila@xxxxxxxxxxxx>
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN mm/memory.c~make-apply_to_page_range-more-robust mm/memory.c
--- a/mm/memory.c~make-apply_to_page_range-more-robust
+++ a/mm/memory.c
@@ -1876,7 +1876,9 @@ int apply_to_page_range(struct mm_struct
unsigned long end = addr + size;
int err;
- BUG_ON(addr >= end);
+ if (WARN_ON(addr >= end))
+ return -EINVAL;
+
pgd = pgd_offset(mm, addr);
do {
next = pgd_addr_end(addr, end);
_
Patches currently in -mm which might be from mika.penttila@xxxxxxxxxxxx are
make-apply_to_page_range-more-robust.patch
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