diff options
| author | Sasha Levin <sasha.levin@oracle.com> | 2013-11-19 17:33:03 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 07:29:17 -0800 |
| commit | efbac2ca2f13d43a9aab37b84a3cca4d73b09c7c (patch) | |
| tree | e7e017ecd4c7c1d5f1185071a66670a4347410a1 | |
| parent | f50db974cb75e31d98b176c3c9ea92e57aa97a1b (diff) | |
aio: nullify aio->ring_pages after freeing it
commit ddb8c45ba15149ebd41d7586261c05f7ca37f9a1 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/aio.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -251,8 +251,10 @@ 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) |