From: Mika Penttilä <mika.penttila@xxxxxxxxxxxx>
Now the arm/arm64 don't trigger this BUG_ON() any more,
but WARN_ON() is here enough to catch buggy callers
but still let potential other !size callers pass with warning.
Signed-off-by: Mika Penttilä mika.penttila@xxxxxxxxxxxx
---
mm/memory.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/memory.c b/mm/memory.c
index 30991f8..9178ee6 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1871,7 +1871,9 @@ int apply_to_page_range(struct mm_struct *mm, unsigned long addr,
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);
--
1.9.1
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