Commit ddb8c45b authored Nov 19, 2013 by Sasha Levin Committed by Benjamin LaHaise Nov 19, 2013

aio: nullify aio->ring_pages after freeing it



After freeing ring_pages we leave it as is causing a dangling pointer. This
has already caused an issue so to help catching any issues in the future
NULL it out.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>

parent d5580232

fs/aio.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -196,8 +196,10 @@ static void aio_free_ring(struct kioctx *ctx)

		put_aio_ring_file(ctx);

		if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages)
		if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages) {
		kfree(ctx->ring_pages);
		ctx->ring_pages = NULL;
		}
		}

		static int aio_ring_mmap(struct file file, struct vm_area_struct vma)