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virtio, vhost, qemu: bugfixes, cleanups

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Fixes in qemu, vhost and virtio.
 
 Signed-off-by: Michael S. Tsirkin <[email protected]>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Fixes in qemu, vhost and virtio"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  fw_cfg: fix the command line module name
  vhost/vsock: fix uninitialized vhost_vsock->guest_cid
  vhost: fix end of range for access_ok
  vhost/scsi: Use safe iteration in vhost_scsi_complete_cmd_work()
  virtio_balloon: fix deadlock on OOM
This commit is contained in:
Linus Torvalds 2017-11-16 13:14:46 -08:00
commit 18c83d2c03
7 changed files with 84 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/vhost/scsi.c
View file

@ -519,7 +519,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
vs_completion_work);
DECLARE_BITMAP(signal, VHOST_SCSI_MAX_VQ);
struct virtio_scsi_cmd_resp v_rsp;
struct vhost_scsi_cmd *cmd;
struct vhost_scsi_cmd *cmd, *t;
struct llist_node *llnode;
struct se_cmd *se_cmd;
struct iov_iter iov_iter;
@ -527,7 +527,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
bitmap_zero(signal, VHOST_SCSI_MAX_VQ);
llnode = llist_del_all(&vs->vs_completion_list);
llist_for_each_entry(cmd, llnode, tvc_completion_list) {
llist_for_each_entry_safe(cmd, t, llnode, tvc_completion_list) {
se_cmd = &cmd->tvc_se_cmd;
pr_debug("%s tv_cmd %p resid %u status %#02x\n", __func__,

4
drivers/vhost/vhost.c
View file

@ -1175,7 +1175,7 @@ static int iotlb_access_ok(struct vhost_virtqueue *vq,
{
const struct vhost_umem_node *node;
struct vhost_umem *umem = vq->iotlb;
u64 s = 0, size, orig_addr = addr;
u64 s = 0, size, orig_addr = addr, last = addr + len - 1;
if (vhost_vq_meta_fetch(vq, addr, len, type))
return true;
@ -1183,7 +1183,7 @@ static int iotlb_access_ok(struct vhost_virtqueue *vq,
while (len > s) {
node = vhost_umem_interval_tree_iter_first(&umem->umem_tree,
addr,
addr + len - 1);
last);
if (node == NULL || node->start > addr) {
vhost_iotlb_miss(vq, addr, access);
return false;

2
drivers/vhost/vsock.c
View file

@ -518,6 +518,8 @@ static int vhost_vsock_dev_open(struct inode *inode, struct file *file)
goto out;
}
vsock->guest_cid = 0; /* no CID assigned yet */
atomic_set(&vsock->queued_replies, 0);
vqs[VSOCK_VQ_TX] = &vsock->vqs[VSOCK_VQ_TX];