Merge branch 'master' into pm-sleep

* master: (848 commits)
  SELinux: Fix RCU deref check warning in sel_netport_insert()
  binary_sysctl(): fix memory leak
  mm/vmalloc.c: remove static declaration of va from __get_vm_area_node
  ipmi_watchdog: restore settings when BMC reset
  oom: fix integer overflow of points in oom_badness
  memcg: keep root group unchanged if creation fails
  nilfs2: potential integer overflow in nilfs_ioctl_clean_segments()
  nilfs2: unbreak compat ioctl
  cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask
  evm: prevent racing during tfm allocation
  evm: key must be set once during initialization
  mmc: vub300: fix type of firmware_rom_wait_states module parameter
  Revert "mmc: enable runtime PM by default"
  mmc: sdhci: remove "state" argument from sdhci_suspend_host
  x86, dumpstack: Fix code bytes breakage due to missing KERN_CONT
  IB/qib: Correct sense on freectxts increment and decrement
  RDMA/cma: Verify private data length
  cgroups: fix a css_set not found bug in cgroup_attach_proc
  oprofile: Fix uninitialized memory access when writing to writing to oprofilefs
  Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old kernel"
  ...

Conflicts:
	kernel/cgroup_freezer.c

1 files changed, 8 insertions, 7 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index ab0966df1e2a..5a65eeac1d29 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1164,7 +1164,7 @@ int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
         struct inet_sock *inet = inet_sk(sk);
         struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
         struct sk_buff *skb;
-        unsigned int ulen;
+        unsigned int ulen, copied;
         int peeked;
         int err;
         int is_udplite = IS_UDPLITE(sk);
@@ -1186,9 +1186,10 @@ try_again:
                 goto out;
 
         ulen = skb->len - sizeof(struct udphdr);
-        if (len > ulen)
-                len = ulen;
-        else if (len < ulen)
+        copied = len;
+        if (copied > ulen)
+                copied = ulen;
+        else if (copied < ulen)
                 msg->msg_flags |= MSG_TRUNC;
 
         /*
@@ -1197,14 +1198,14 @@ try_again:
          * coverage checksum (UDP-Lite), do it before the copy.
          */
 
-        if (len < ulen || UDP_SKB_CB(skb)->partial_cov) {
+        if (copied < ulen || UDP_SKB_CB(skb)->partial_cov) {
                 if (udp_lib_checksum_complete(skb))
                         goto csum_copy_err;
         }
 
         if (skb_csum_unnecessary(skb))
                 err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
-                                              msg->msg_iov, len);
+                                              msg->msg_iov, copied);
         else {
                 err = skb_copy_and_csum_datagram_iovec(skb,
                                                        sizeof(struct udphdr),
@@ -1233,7 +1234,7 @@ try_again:
         if (inet->cmsg_flags)
                 ip_cmsg_recv(msg, skb);
 
-        err = len;
+        err = copied;
         if (flags & MSG_TRUNC)
                 err = ulen;