3.12-stable review patch. If anyone has any objections, please let me know.
------------------ From: Sasha Levin <[email protected]> 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 <[email protected]> Signed-off-by: Benjamin LaHaise <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/aio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/fs/aio.c +++ b/fs/aio.c @@ -251,8 +251,10 @@ static void aio_free_ring(struct kioctx 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) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
