linux-kernel - [PATCH 0/6] virtio-console: spec compliance fixes

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Date:   Fri, 20 Apr 2018 21:18:00 +0300
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Amit Shah <amit@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        virtualization@...ts.linux-foundation.org, stable@...r.kernel.org,
        Tiwei Bie <tiwei.bie@...el.com>,
        Jason Wang <jasowang@...hat.com>
Subject: [PATCH 0/6] virtio-console: spec compliance fixes

Turns out virtio console tries to take a buffer out of an active vq.
Works by sheer luck, and is explicitly forbidden by spec.  And while
going over it I saw that error handling is also broken -
failure is easy to trigger if I force allocations to fail.

Lightly tested.

Michael S. Tsirkin (6):
  virtio_console: don't tie bufs to a vq
  virtio: add ability to iterate over vqs
  virtio_console: free buffers after reset
  virtio_console: drop custom control queue cleanup
  virtio_console: move removal code
  virtio_console: reset on out of memory

 drivers/char/virtio_console.c | 155 ++++++++++++++++++++----------------------
 include/linux/virtio.h        |   3 +
 2 files changed, 75 insertions(+), 83 deletions(-)

-- 
MST