Memory allocated without FLAG_DONTZERO will now be zeroed before being
returned to the caller.
This means that by default all allocated memory is now zeroed, restoring the
default behaviour that had been accidentally removed by a previous commit.
Fixes: 8131e91a4b61 ("lib/alloc_page: complete rewrite of the page allocator")
Reported-by: Nadav Amit <nadav.amit@xxxxxxxxx>
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
---
lib/alloc_page.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/alloc_page.c b/lib/alloc_page.c
index 47e2981..95d957b 100644
--- a/lib/alloc_page.c
+++ b/lib/alloc_page.c
@@ -372,6 +372,8 @@ static void *page_memalign_order_flags(u8 al, u8 ord, u32 flags)
if (area & BIT(i))
res = page_memalign_order(areas + i, al, ord);
spin_unlock(&lock);
+ if (res && !(flags & FLAG_DONTZERO))
+ memset(res, 0, BIT(ord) * PAGE_SIZE);
return res;
}
--
2.26.2
