linux-toradex.git/drivers/vhost, branch v4.9.16

vhost: fix initialization for vq->is_le

2017-02-09T07:08:28+00:00

commit cda8bba0f99d25d2061c531113c14fa41effc3ae upstream.

Currently, under certain circumstances vhost_init_is_le does just a part
of the initialization job, and depends on vhost_reset_is_le being called
too. For this reason vhost_vq_init_access used to call vhost_reset_is_le
when vq->private_data is NULL. This is not only counter intuitive, but
also real a problem because it breaks vhost_net. The bug was introduced to
vhost_net with commit 2751c9882b94 ("vhost: cross-endian support for
legacy devices"). The symptom is corruption of the vq's used.idx field
(virtio) after VHOST_NET_SET_BACKEND was issued as a part of the vhost
shutdown on a vq with pending descriptors.

Let us make sure the outcome of vhost_init_is_le never depend on the state
it is actually supposed to initialize, and fix virtio_net by removing the
reset from vhost_vq_init_access.

With the above, there is no reason for vhost_reset_is_le to do just half
of the job. Let us make vhost_reset_is_le reinitialize is_le.

Signed-off-by: Halil Pasic 
Reported-by: Michael A. Tebolt 
Reported-by: Dr. David Alan Gilbert 
Fixes: commit 2751c9882b94 ("vhost: cross-endian support for legacy devices")
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Greg Kurz 
Tested-by: Michael A. Tebolt 
Signed-off-by: Greg Kroah-Hartman

vhost-vsock: fix orphan connection reset

2016-12-09T02:24:30+00:00

local_addr.svm_cid is host cid. We should check guest cid instead,
which is remote_addr.svm_cid. Otherwise we end up resetting all
connections to all guests.

Cc: stable@vger.kernel.org [4.8+]
Reviewed-by: Stefan Hajnoczi 
Signed-off-by: Peng Tao 
Signed-off-by: David S. Miller

Merge 4.8-rc5 into char-misc-next

2016-09-05T06:04:07+00:00

We want the fixes in here for merging and testing.

Signed-off-by: Greg Kroah-Hartman

miscdevice: Add helper macro for misc device boilerplate

2016-08-31T12:12:35+00:00

Many modules call misc_register and misc_deregister in its module init
and exit methods without any additional code. This ends up being
boilerplate. This patch adds helper macro module_misc_device(), that
replaces module_init()/ module_exit() with template functions.

This patch also converts drivers to use new macro.

Change since v1:
Add device.h include in miscdevice.h as module_driver macro was not
available from other include files in some architectures.

Signed-off-by: PrasannaKumar Muralidharan 
Signed-off-by: Greg Kroah-Hartman

vhost/scsi: fix reuse of &vq->iov[out] in response

2016-08-23T14:16:57+00:00

The address of the iovec &vq->iov[out] is not guaranteed to contain the scsi
command's response iovec throughout the lifetime of the command.  Rather, it
is more likely to contain an iovec from an immediately following command
after looping back around to vhost_get_vq_desc().  Pass along the iovec
entirely instead.

Fixes: 79c14141a487 ("vhost/scsi: Convert completion path to use copy_to_iter")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Coddington 
Signed-off-by: Michael S. Tsirkin

vhost/test: fix after swiotlb changes

2016-08-15T02:05:51+00:00

Signed-off-by: Michael S. Tsirkin

vhost/vsock: fix vhost virtio_vsock_pkt use-after-free

2016-08-09T10:42:37+00:00

Stash the packet length in a local variable before handing over
ownership of the packet to virtio_transport_recv_pkt() or
virtio_transport_free_pkt().

This patch solves the use-after-free since pkt is no longer guaranteed
to be alive.

Reported-by: Dan Carpenter 
Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

2016-08-06T13:20:13+00:00

Pull virtio/vhost updates from Michael Tsirkin:

 - new vsock device support in host and guest

 - platform IOMMU support in host and guest, including compatibility
   quirks for legacy systems.

 - misc fixes and cleanups.

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  VSOCK: Use kvfree()
  vhost: split out vringh Kconfig
  vhost: detect 32 bit integer wrap around
  vhost: new device IOTLB API
  vhost: drop vringh dependency
  vhost: convert pre sorted vhost memory array to interval tree
  vhost: introduce vhost memory accessors
  VSOCK: Add Makefile and Kconfig
  VSOCK: Introduce vhost_vsock.ko
  VSOCK: Introduce virtio_transport.ko
  VSOCK: Introduce virtio_vsock_common.ko
  VSOCK: defer sock removal to transports
  VSOCK: transport-specific vsock_transport functions
  vhost: drop vringh dependency
  vop: pull in vhost Kconfig
  virtio: new feature to detect IOMMU device quirk
  balloon: check the number of available pages in leak balloon
  vhost: lockless enqueuing
  vhost: simplify work flushing

VSOCK: Use kvfree()

2016-08-02T13:56:08+00:00

Use kvfree() instead of open-coding it.

Signed-off-by: Wei Yongjun 
Signed-off-by: Michael S. Tsirkin

vhost: split out vringh Kconfig

2016-08-02T13:54:28+00:00

vringh is pulled in by caif and mic, but the other
vhost config does not need to be there.
In particular, it makes no sense to have vhost net/scsi/sock
under caif/mic.

Create a separate Kconfig file and put vringh bits there.

Signed-off-by: Michael S. Tsirkin