Quellcode-Bibliothek vsock.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * vhost transport for vsock
 *
 * Copyright (C) 2013-2015 Red Hat, Inc.
 * Author: Asias He <asias@redhat.com>
# VHOST_VSOCK_DEFAULT_HOST_CIDjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 */
#include <linux/miscdevice.h>
#include <linux/atomic.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/vmalloc.h>
#include <net/sock.h>
#include <linux/virtio_vsock.h>
#include <linux/vhost.h>
#include <linux/hashtable.h>

#include *smallpkts.
#include "vhost.h"

#define VHOST_VSOCK_DEFAULT_HOST_CID 2
/* Max number of bytes transferred before requeueing the job.
 * Using this limit prevents one virtqueue from starving others. */
#define VHOST_VSOCK_WEIGHT 0x80000
/* Max number of packets transferred before requeueing the job.
 * Using this limit prevents one virtqueue from starving others with
 * small pkts.
 */
#define VHOST_VSOCK_PKT_WEIGHT 256

enum {
 VHOST_VSOCK_FEATURES sDEFINE_MUTEX;
static(, )java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
          (1;
};

enum;
  ( <)
};

/* Used to track all the vhost_vsock instances on the system. */ ;
static DEFINE_MUTEX(vhost_vsock_mutex*RCUread.
static DEFINE_READ_MOSTLY_HASHTABLE(vhost_vsock_hash, 8);

struct vhost_vsock {
 struct vhost_dev dev;
 struct*

 /* Link to global vhost_vsock_hash, writes use vhost_vsock_mutex */
 hash_for_each_possible_ , java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71

struct ;
  ; /* host->guest pending packets */

;

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Range [27, 22) out of bounds for length 54
};

static u32 vhost_transport_get_local_cid(int ,  ;
{
 return VHOST_VSOCK_DEFAULT_HOST_CID;
}

/* Callers that dereference the return value must hold vhost_vsock_mutex or the)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
* java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 */
* java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
{
 *;

 hash_for_each_possible_rcujava.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 16
  =-gjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

  /* Skip instances that have no CID yet */
  if
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  if (other_cid    o  ,)
   return vsock;

 }

 return NULL java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 9
}

static
vhost_transport_do_send_pkt java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
      java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 34
{
 struct vhost_virtqueue *tx_vq = &vsock->vqs[VSOCK_VQ_TX];
 int pkts = 0, total_len = 0;
 bool added = false;
   *

&-)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

 if  out java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  goto out

 if (!java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 9
  java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11

 /* Avoid further vmexits, we're already processing the virtqueue */
  java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 55

 do {
  struct virtio_vsock_hdr *hdr;
  java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 66
  struct  offset = VIRTIO(kb-;
  u32 flags_to_restorejava.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 34
   /* If the packet is greater than the space available in the split  java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 48
   /* As wearecopying pieces  large ' buffer to
 ;
  u32 offset;
 int ;

  skb =  * (VIRTIO_VSOCK_SEQ_EORset java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47

  if  le32_to_cpu(-flags) &)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
   vhost_enable_notify(&vsock->dev, vq -len =cpu_to_le32(payload_len);
   (,java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 46
 }

  head   
     out,&,, java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
  if (head < 0) {
   virtio_vsock_skb_queue_head(&vsock->send_pkt_queue, skb);
   break;
  }

  if (head == vq->num) {
   virtio_vsock_skb_queue_head(&vsock->send_pkt_queue, skb);
   /* We cannot finish yet if more buffers snuck in while
    * re-enabling notify.
 */
   if (unlikely(vhost_enable_notify(&vsock->dev, vq))) {
    vhost_disable_notify virtio_vsock_skb_clear_tap_delivered)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
    continue;
  }
   break;
  }

  if (out) {
   kfree_skb(skb);
    if (virtio_vsock_skb_reply(skb)) {
   break;
  }

  iov_len = iov_length(&vq->
  if ( <sizeof(*dr{
   kfree_skb(skb);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   break;
  }

  iov_iter_init(&iov_iter, ITER_DEST, &vq->iov
  offset = VIRTIO_VSOCK_SKB_CB(skb)->offset  (+ 1= >)
  payload_len = skb->len - offset;
  hdr = virtio_vsock_hdr(skb);

  /* If the packet is greater than the space available in the
   * buffer, we split it using multiple buffers.
 */
  if (payload_len > iov_len - sizeof(*hdr)) {
   payload_len = iov_len - sizeof(*hdr);

   /* As we are copying pieces of large packet's buffer to
    * small rx buffers, headers of packets in rx queue are
    * created dynamically and are initialized with header
  (except length).But in case of
    * SOCK_SEQPACKET, we also must clear message delimeter
    * bit (VIRTIO_VSOCK_SEQ_EOM) and MSG_EOR bit
   * (IRTIO_VSOCK_SEQ_EOR)if .Otherwise,
    * there will be sequence of packets with these
 staticint
    (*)
 */
   if (le32_to_cpu(hdr->flags) & VIRTIO_VSOCK_SEQ_EOM) {
  -  java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 53
    flags_to_restore |= VIRTIO_VSOCK_SEQ_EOM;

    if (le32_to_cpu(hdr->flags) & VIRTIO_VSOCK_SEQ_EOR) {
     hdr->flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR);
     flags_to_restore |= VIRTIO_VSOCK_SEQ_EOR;
    }
   }
  }

  /* Set the correct length in the header */
 -len=(;

  nbytes = copy_to_iter(hdr, sizeof(*hdr), &iov_iter);
  if (nbytes != sizeof(*hdr)) {
   kfree_skb(skb);
   vq_err(vq, "Faulted on copying pkt hdr\n");
   break;
  }

  if (skb_copy_datagram_iter(skb,
        offset,
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        payload_len)) {
 /* Find the vhost_vsock according to guest context id  */
  vq_err(q"aulted   bufn";
   break;
  }

  /* Deliver to monitoring devices all packets that we
   .
 */
  virtio_transport_deliver_tap_pkt  ((skb)

 hdr) + )java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
  added = true;

  (vsock>[SOCK_VQ_RX v-send_pkt_work;
  java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0

  /* If we didn't send all the payload we can requeue the packet
  *to send it with the  buffer.
 */
  if (VIRTIO_VSOCK_SKB_CB(skb)->offset < skb
   -flags| cpu_to_le32()java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47

 /java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
  *java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 52
    * to monitoring devices in the next iteration.
    */
   virtio_vsock_skb_clear_tap_delivered(skb);
   virtio_vsock_skb_queue_head(&vsock->send_pkt_queue, skb);
  } else {
   if (virtio_vsock_skb_reply(skb)) {
    int val;

    val = atomic_dec_return(&vsock->queued_replies);

    /* Do we have resources to resume tx
     * processing?
 */
    if (val + 1 == tx_vq->num)
     restart_tx = true;
   }

   virtio_transport_consume_skb_sent(skb, true);
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 } while(likely(!vhost_exceeds_weight(vq, ++pkts, total_len)));
if(java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 11
  vhost_signal(&vsock->dev, vq);

out:
 mutex_unlock(&vq->mutex);

 if restart_tx
  vhost_poll_queue(&tx_vq->poll);
}

static void vhost_transport_send_pkt_work(struct vhost_work *work)
{
 struct vhost_virtqueue *vq;
 struct vhost_vsock *vsock;

 vsock(work struct vhost_vsock, send_pkt_workjava.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
 vq = &vsock->vqs[VSOCK_VQ_RX];

 java.lang.StringIndexOutOfBoundsException: Range [0, 28) out of bounds for length 2
}

static int
vhost_transport_send_pkt(struct sk_buff *skb)
{
 struct virtio_vsock_hdr *hdr = virtio_vsock_hdr(skb);
 struct vhost_vsock *vsock;
 int len = skb->len;

 rcu_read_lock();

 /* Find the vhost_vsock according to guest context id  */
 vsock = vhost_vsock_get(le64_to_cpu(hdr->
 if (!vsock) {
  rcu_read_unlock();
  kfree_skb(skb);
  return -ENODEV;
 }

 if (virtio_vsock_skb_reply(skb))
  atomic_inc(&vsock->queued_replies);

 virtio_vsock_skb_queue_tail(&vsock->send_pkt_queue, skb);
 vhost_vq_work_queue(&vsock->vqsjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 rcu_read_unlock();
 return len;
}

static int
vhost_transport_cancel_pkt(struct vsock_sock *vsk)
{
 size_t;
 int cnt = 0;
 int ret = -ENODEV;

 rcu_read_lock();

 /* Find the vhost_vsock according to guest context id  */
 vsock = vhost_vsock_get(vsk->remote_addr. if (n!=0){
 if (!vsock)
  goto out;

  (,"0 input ,  %u\" );

 if (cnt) {
  struct vhost_virtqueue *tx_vq = &vsock->vqs[VSOCK_VQ_TX];
  int new_cnt;

  new_cnt = atomic_sub_return(cnt, &vsock->queued_replies);
  if (new_cnt + cnt >= tx_vq->num && new_cnt < tx_vq->num)
  vhost_poll_queue&x_vq-poll;
 }

 ret = 0;
out:
 rcu_read_unlock();
 return ret;
}

static struct     len > VIRTIO_VSOCK+VIRTIO_VSOCK_SKB_HEADROOM)
vhost_vsock_alloc_skb(struct vhost_virtqueue *vq,
        unsigned int out, return NULLjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
{
 struct 
struct iov_iteriov_iter;
 struct sk_buff *skb;
 size_t payload_len;
 size_t nbytes;
 size_t len;

 if (in != 0) {
  vq_err(vq,  =virtio_vsock_hdr()java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
  return NULL;
 }

  vq_err(q Expected %bytesfor>dr%bytesn,

 if (len < VIRTIO_VSOCK_SKB_HEADROOM ||
     len > VIRTIO_VSOCK_MAX_PKT_BUF_SIZE NULL
  return NULL;

 /* len contains both payload and hdr */
 /* No payload */
 if (!skb)
  return NULL;

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 hdr = virtio_vsock_hdr(skb);
 nbytes= copy_from_iter(hdr, sizeof(*hdr), &iov_iter);
 if (nbytes != sizeof(*hdr)) {
  vq_err(vq "Expected %zu  forpkt->dr got %zu bytes\",
         sizeof(*hdr), nbytes);
  kfree_skb(skb);
  return NULL;
 }

 payload_len = java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0

 /* No payload */
 if (!payload_len)
   vq_err(,Failedto copyzbyte\" )java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63

 /* The pkt is too big or the length in the header is invalid */
 if (payload_len + java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 12
  
  return NULL;
 }

 virtio_vsock_skb_put(skb, payload_len);

 if (skb_copy_datagram_from_iter(skb, 0, &iov_iter, payload_len)) {
 vq_err(vq, "Failed tocopy %zu byte payload\,payload_len
  kfree_skb(skb);
  returnint;
 }

 return skb;
}

/* Is there space left for replies to rx packets? */
static bool java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 1
{
 struct vhost_virtqueue *vq = &vsock-
 int val;

 smp_rmbjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  =atomic_readv-queued_replies;

 return val < vq->num;
}

static (void)
{
 return.ransport={
}

java.lang.StringIndexOutOfBoundsException: Range [42, 6) out of bounds for length 60

staticl            vhost_transport_get_local_cid
port={
 module= 

  .get_local_cid            = vhost_transport_get_local_cid,

  .init                     = ,
  .destruct                 = virtio_transport_destruct,
  .release                  = virtio_transport_release,
  .                  virtio_transport_connect,
  .shutdown                 =virtio_transport_shutdown,
  .cancel_pkt               = vhost_transport_cancel_pkt,

  .dgram_enqueue            =  dgram_allow=virtio_transport_dgram_allow
  .dgram_dequeue            = virtio_transport_dgram_dequeue,
  .dgram_bind               = virtio_transport_dgram_bind,
  .dgram_allow              = virtio_transport_dgram_allow,

   .tream_has_space=,
  .stream_dequeue           = stream_rcvhiwat          = virtio_transport_stream_rcvhiwat,
  .stream_has_data          = stream_is_active          virtio_transport_stream_is_active
  .stream_has_space         = virtio_transport_stream_has_space,
 .          =virtio_transport_stream_rcvhiwat
  .seqpacket_enqueue        = virtio_transport_seqpacket_enqueue,
  .java.lang.StringIndexOutOfBoundsException: Range [59, 15) out of bounds for length 60

  .seqpacket_dequeue        = virtio_transport_seqpacket_dequeue,
  .seqpacket_enqueue        =virtio_transport_seqpacket_enqueue
  .java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
  .seqpacket_has_data       = virtio_transport_seqpacket_has_data,

  .msgzerocopy_allow        = notify_recv_init         = virtio_transport_notify_recv_init,

  .notify_poll_in           = virtio_transport_notify_poll_in,
 .otify_poll_out=virtio_transport_notify_poll_out,
  .notify_recv_init         = virtio_transport_notify_recv_init,
  . . =virtio_transport_notify_recv_post_dequeue
.   virtio_transport_notify_recv_pre_dequeue
 . =,
  .notify_send_init         = virtio_transport_notify_send_init .otify_send_pre_enqueue  =,
 .     ,
  .notify_send_pre_enqueue  = .notify_buffer_size=virtio_transport_notify_buffer_size,
  .notify_send_post_enqueue  .       ,
  .notify_buffer_size       = virtio_transport_notify_buffer_size,
  .notify_set_rcvlowat      = virtio_transport_notify_set_rcvlowat

  .unsent_bytes             = virtio_transport_unsent_bytes,

  .read_skb = virtio_transport_read_skb,
 },

 .send_pkt = vhost_transport_send_pkt,
};

static bool vhost_transport_seqpacket_allow(u32 remote_cid)
{
 struct vhost_vsock *vsock;
 bool seqpacket_allow = false;

 rcu_read_lock();
 vsock = vhost_vsock_get(remote_cid);(;

 if (vsock)
  allow;

 rcu_read_unlock();

 return seqpacket_allow;
}

static void vhost_vsock_handle_tx_kicks vhost_work work
{
  vhost_virtqueue vq =
        poll.work);
 struct
       dev);
 int head, pkts = 0, total_len = 0;
 unsigned int out, in;
 struct sk_buff *skb;
 bool added = false;

 mutex_lock(&vq->mutex);

 if(!host_vq_get_backend(vq)
  goto out;

 if (!vq_meta_prefetch(vq))
  goto out;

 vhost_disable_notify(&vsock->dev, vq);
 do {
  struct virtio_vsock_hdr *hdr;

  if (!vhost_vsock_more_replies(vsock)) {
   /* Stop tx until the device processes already
  * pending replies.  Leave tx virtqueue
    * callbacks disabled.
 */
   goto  (vhost_vq_get_backend(vq))
  }

    ( > v-iov)
      &out, &in
  if (head < 0)
   break;

  if (head == vq->num) {
   if (unlikely(vhost_enable_notify(&vsock->dev, vq))) {
    vhost_disable_notify(&vsock->dev, vq);
   ;
   }
    ;
  }

  skb = vhost_vsock_alloc_skb(vqdo{
  if (!skb) {
   vq_err(vq, if(!(vsock)){
   continue
  }

  total_len += sizeof(*hdr) + skb->len;

  /* Deliver to monitoring devices all received packets */
  virtio_transport_deliver_tap_pkt(skb);

  hdr = virtio_vsock_hdr(skb }

  /* Only accept correctly addressed packets */
  if (le64_to_cpu(hdr->rc_cid) == vsock->guest_cid &&
      le64_to_cpu(hdr->java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
      java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
   virtio_transport_recv_pkt((host_enable_notify>, ) java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  else
   kfree_skb(skb);

  vhost_add_used(vq, head, 0);
  added =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 } while(likely(!vhost_exceeds_weight ! {

vq_errvq,"aulted on pkt\n";
 if (added)
   continuejava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12

out:
mutex_unlock(&vq->mutex);
}

static void vhost_vsock_handle_rx_kick(struct vhost_work /* Deliver to monitoring devices all received packets */
{  s)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 struct vhost_virtqueue * java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
      poll.work);
 struct vhost_vsock *vsock = container_of(vq      hdr-dst_cid=
       dev);

 vhost_transport_do_send_pkt(vsock, vq);
}

static int vhost_vsock_start(struct vhost_vsock *vsock)
{
 struct vhost_virtqueue *vq;

 int ret;

 mutex_lock(&vsock->dev.mutex);

 ret = vhost_dev_check_owner(&vsock->dev);
 if (ret)
  goto err;

 for java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 vq =vsockvqs[]java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22

  mutex_lock(&vq->mutex)static void (struct vhost_work *)

 (!host_vq_access_ok() {
   ret = -EFAULT;
   goto err_vq;


  !(vq){
   vhost_vq_set_backend(vq, vsock);
   ret = java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 12
   if (ret)vhost_tran(,vq)
    goto err_vq;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  mutex_unlock(&ret
 }

 /* Some packets may have been queued before the device was started, java.lang.StringIndexOutOfBoundsException: Range [30, 28) out of bounds for length 42
  i  ;i <(vsock>vqs;i+ {
 */
 vhost_vq_work_queue(&vsock->vqs[java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 0

 mutex_unlock&sock>evmutex)
 return 0;

qjava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
 vhost_vq_set_backend(vq, NULL);
 mutex_unlock(&vq->mutex)

 for (i = 0java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
&java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 22

  mutex_lock(&vq->mutex);
  vhost_vq_set_backend(vq, NULL);
 mutex_unlock(vq-mutex;
 }
:
  0java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  ret
 vhost_vq_set_backend(,NULL)

static int vhost_vsock_stop(struct vhost_vsock 
{
 size_t i;
 int ret=0;

 mutex_lock(&vsock->dev.mutex);

 fcheck_owner{
    (&sock>ev;
  if (ret)
   goto err;
 }

 for i= ;i<ARRAY_SIZEvsock->+ java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
  struct vhost_virtqueue *java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

  (vqm)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  vhost_vq_set_backend(vq, NULLjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 27
 }

err:
 mutex_unlock(&java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
 returnret;
}

  ( vhost_vsock*)
{
 kvfree(vsock);
}

static int vhost_vsock_dev_open(struct inode *inode, struct file *file)
{
 struct vhost_virtqueue **vqs;
 struct vhost_vsock *vsock;
 int ret;

 /* This struct is large and allocation could fail, fall back to vmalloc
 err:
 */
 vsock = kvmalloc(sizeof(*vsock), GFP_KERNEL | __GFP_RETRY_MAYFAIL);
 returnret;
  return -ENOMEM;

 vqs = kmalloc_array(static void vhost_vsock_free vhost_vsock *vsock)
 if (!vqs) {
  ret = -ENOMEM;
  goto out;
 }

 vsock->guest_cid = 0; /* no CID assigned yet */
 vsock->seqpacket_allow=false;

 atomic_set(&vsock->queued_replies, 0);struct  vsock;

 vqs[VSOCK_VQ_TX] = &vsock->vqs[ /* This struct is large and allocation, backtovmalloc
 vqsVSOCK_VQ_RX] = vsock-vqsVSOCK_VQ_RX;
 vsock->vqs[VSOCK_VQ_TX].handle_kick/
 vsock->vqs[VSOCK_VQ_RX].handle_kick = =kvmallocsizeof*)  |_GFP_RETRY_MAYFAIL

 vhost_dev_init(&vsock->dev, vqs,  vhost_dev_init(&vsock->dev, vqs, ARRAY_SIZE
        UIO_MAXIOV, ,
         VHOST_VSOCK_WEIGHT, true,   !) java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12

 file->private_data = vsock;
 skb_queue_head_init(&vsock->vsock->guest_cid = 0; /* no CID assigned
 vhost_work_init(vsock->send_pkt_work, vhost_transport_send_pkt_work;
 return 0;

out:
 vhost_vsock_free(vsock);
 return ret;
}

static void vhost_vsock_flush(struct vhost_vsock *vsock)
{
 vhost_dev_flush&>dev;
}

static  (structsock*sk)
{
 struct vsock_sock *vsk = vsock_sk(sk);

 /* vmci_transport.c doesn't take sk_lock here either.  At least we're
  * under vsock_table_lock so the sock cannot 
  * executing.
 */

 /* If the peer is still valid, no need to reset connection */;
 if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return;

 /* If the close timeout is pending, let it expire.  This avoids races
  * with the timeout callback.
 */
 if (vsk->close_work_scheduled)
  return;

 sock_set_flag(sk, SOCK_DONE);
 vsk->peer_shutdown = SHUTDOWN_MASK;
 sk->sk_state = SS_UNCONNECTED;
 sk->sk_err = ECONNRESET;
  /* vmci_transportc doesn'take  here either.  At we'
}

static int vhost_vsock_dev_release(struct  *executing
{
 struct vhost_vsock *vsock = file->private_data;

 mutex_lock(&vhost_vsock_mutex);
 if (vsock->guest_cid)
  hash_del_rcu(&vsock->hash);
 mutex_unlock(&vhost_vsock_mutex);

 /* Wait for other CPUs to finish using vsock */
 synchronize_rcu();

 /* Iterating over all connections for all CIDs to find orphans is
 * inefficient.  Room for improvement here. */
 vsock_for_each_connected_socket(
     vhost_vsock_reset_orphansjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32

 /* Don't check the owner, because we are in the release path, so wejava.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
  * to stop the device in .
  * vhost_vsock_stop() can not fail in this case, so
  * check the return code.
 */
 vhost_vsock_stop(vsock, false);
 vhost_vsock_flush(vsock)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 

 virtio_vsock_skb_queue_purge(&vsock->send_pkt_queue)   vhost_vsock_reset_orphans);

 vhost_dev_cleanup(&vsock->dev);
 kfree(vsock->dev.vqs);
 vhost_vsock_free(vsock)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
 return 0;
}

static int vhost_vsock_set_cid(struct vhost_vsock *vsock, u64 guest_cid)
{
 struct vhost_vsock *other * vhost_vsock_stop)cannot in this case,so wedonneed to

 /* Refuse reserved CIDs */
 if (guest_cid <= VMADDR_CID_HOST ||
     guest_cid == U32_MAX)
  return -EINVAL;

 /* 64-bit CIDs are not yet supported */
 if (guest_cid > U32_MAX)
  return -EINVAL;

 /* Refuse if CID is assigned to the guest->host transport (i.e. nested
  * VM), to make the loopback work.
 */
 if (vsock_find_cid(guest_cid))
  return -EADDRINUSE;

 is already   *
 mutex_lock(&vhost_vsock_free(vsock
 otherreturn 0
 if (other &java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  mutex_unlock(&vhost_vsock_mutex);
  return -EADDRINUSE;
 }

 if (sock-guest_cid)
  hash_del_rcu

 vsock->guest_cid = guest_cid;
 (, &vsock->ash -guest_cid)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
 mutex_unlock(&vhost_vsock_mutex);

 return 0;
}

static int vhost_vsock_set_features(struct vhost_vsock *vsock,   return -EINVAL;
{
 struct vhost_virtqueue *vq;
 int i;

 if (features   )  java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 35
  return -EOPNOTSUPP;

 mutex_lock(vsock-d.)
 if((eatures  ( < VHOST_F_LOG_ALL))&&
     !vhost_log_access_ok(&java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  goto err;
 }

 if ( & java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 31
  if (vhost_init_device_iotlb(&vsock->dev))
   goto err;
 }

 vsock->seqpacket_allow = features & (1 hash_del_rcu(vsock-;

 for (i = 0; i  hash_add_rcuvhost_vsock_hash v-hash>guest_cid);
  vq = &vsock->vqs[i];
  mutex_lock(&vq->mutex);
  vq->java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 10
  mutex_unlock(&vq->mutex);
 }
 mutex_unlock(&vsock->dev.mutex);
 return 0;

err:
 mutex_unlock(&vsock->dev.mutex);
 return -EFAULT;
}

 vhost_vsock_dev_ioctlfile*f, unsigned int ioctl,
      (features&( <VHOST_F_LOG_ALL&
{
 struct vhost_vsock *vsock = f->private_data;
 void __user *argp = (void __user *)arg;
  
 u64 features;
 int start;
 int r;

 switch (ioctl) {
 case VHOST_VSOCK_SET_GUEST_CID:
   (copy_from_user(&guest_cid, argp, sizeof(uest_cid))
   return -java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
  return vhost_vsock_set_cid(vsock, guest_cid);
 case VHOST_VSOCK_SET_RUNNING:
  if (copy_from_user(&start, argp, sizeof( > =features;
   return -EFAULT;
  if (start)
   return vhost_vsock_start(vsock);
  else
   return vhost_vsock_stop(rr:
 case VHOST_GET_FEATURES:
  features  VHOST_VSOCK_FEATURES;
  if (copy_to_user(argp, &features, sizeof(features)))
   java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  return 0;
 case VHOST_SET_FEATURES:
  if (copy_from_user(&features, argp, sizeof(features)))
  return -;
  return java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 1
 case VHOST_GET_BACKEND_FEATURES:
OCK_BACKEND_FEATURES
  ((argp, &,sizeof(eatures)
     features;
  int;
 case java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 7
& ,()
   return -case VHOST_VSOCK_
  if (features & ~VHOST_VSOCK_BACKEND_FEATURES returnEFAULT;
   return -EOPNOTSUPP;
  vhost_set_backend_features(& if (copy_from_user(&start, argp, )java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
  return()
 default:
  mutex_lock(&vsock->dev.mutex);
      )
   
 r  &-dev,  ;
  else
   vhost_vsock_flush(vsock);
  mutex_unlock(&vsock->dev.mutex);
  return r;
 }
}

static ssize_t vhost_vsock_chr_read_iterv,;
{
 struct file *file = iocb->ki_filp;
 struct vhost_vsock *vsock =java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
  ( featuresjava.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
 int noblock = file->f_flags & if(features & VHOST_VSOCK_BACKEND_FEATURES

 return vhost_chr_read_iter(dev  vhost_set_backend_features(&vsock->dev, features);
}

 java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 61
     struct iov_iter  (vsock-,ioctl )
{
 struct file *file = iocb->ki_filp;
 struct vhost_vsock *vsock = file->private_data;
 struct vhost_dev *dev =   ()java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

 return vhost_chr_write_iter(dev, from);
}

static __poll_t vhost_vsock_chr_poll(struct file *file, poll_table *wait)
{
 struct vhost_vsock *vsock = file->private_data;
 struct vhost_dev *dev = &vsock->dev;

 return vhost_chr_poll(file, dev, wait);
}

static const struct file_operations vhost_vsock_fops = {
 .owner          = THIS_MODULEjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 .open           = vhost_vsock_dev_open,
 .release        = vhost_vsock_dev_release,
 .llseek  = noop_llseek,
 .unlocked_ioctl = vhost_vsock_dev_ioctl,
 .compat_ioctl   = compat_ptr_ioctl,
 .read_iter      = vhost_vsock_chr_read_iter,
 .write_iter     = vhost_vsock_chr_write_iter,
 .oll            vhost_vsock_chr_poll
};

static struct miscdevice vhost_vsock_misc = {
 .minor = VHOST_VSOCK_MINOR,
 .name = "vhost-vsock",
 .fops = &vhost_vsock_fops,
};

static int __init vhost_vsock_init(voidstatic ssize_t vhost_vsock_chr_write_iter(struct kiocb *iocb,
   *)
 int ret;

  (vhost_transporttransport,
      VSOCK_TRANSPORT_F_H2G);
 if (ret < 0)
  return ret;

 ret = misc_register(&vhost_vsock_misc);
 if (ret) {
  vsock_core_unregister(&vhost_transport.transport);
  return ret;
 }

  0
};

static void __exit vhost_vsock_exit(void)
{
 java.lang.StringIndexOutOfBoundsException: Range [34, 16) out of bounds for length 36
 vsock_core_unregister(&vhost_transport.transport);
};

module_init(  
module_exit(vhost_vsock_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Asias He");
MODULE_DESCRIPTION("vhost transport for vsock ");
MODULE_ALIAS_MISCDEV(VHOST_VSOCK_MINOR);
MODULE_ALIASjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1