Re: [PATCH] io_uring: fix memory leak of UNIX domain socket inode

[Jens Axboe]

On 6/12/19 3:58 PM, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> Opening and closing an io_uring instance leaks a UNIX domain socket
> inode.  This is because the ->file of the io_uring instance's internal
> UNIX domain socket is set to point to the io_uring file, but then
> sock_release() sees the non-NULL ->file and assumes the inode reference
> is held by the file so doesn't call iput().  That's not the case here,
> since the reference is still meant to be held by the socket; the actual
> inode of the io_uring file is different.
> 
> Fix this leak by NULL-ing out ->file before releasing the socket.

Thanks, applied.

-- 
Jens Axboe