Merge tag 'v3.11-rc7' into stable/for-linus-3.12

Linux 3.11-rc7

As we need the git commit 28817e9de4f039a1a8c1fe1df2fa2df524626b9e
Author: Chuck Anderson <chuck.anderson@oracle.com>
Date:   Tue Aug 6 15:12:19 2013 -0700

    xen/smp: initialize IPI vectors before marking CPU online

* tag 'v3.11-rc7': (443 commits)
  Linux 3.11-rc7
  ARC: [lib] strchr breakage in Big-endian configuration
  VFS: collect_mounts() should return an ERR_PTR
  bfs: iget_locked() doesn't return an ERR_PTR
  efs: iget_locked() doesn't return an ERR_PTR()
  proc: kill the extra proc_readfd_common()->dir_emit_dots()
  cope with potentially long ->d_dname() output for shmem/hugetlb
  usb: phy: fix build breakage
  USB: OHCI: add missing PCI PM callbacks to ohci-pci.c
  staging: comedi: bug-fix NULL pointer dereference on failed attach
  lib/lz4: correct the LZ4 license
  memcg: get rid of swapaccount leftovers
  nilfs2: fix issue with counting number of bio requests for BIO_EOPNOTSUPP error detection
  nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP error
  drivers/platform/olpc/olpc-ec.c: initialise earlier
  ipv4: expose IPV4_DEVCONF
  ipv6: handle Redirect ICMP Message with no Redirected Header option
  be2net: fix disabling TX in be_close()
  Revert "ACPI / video: Always call acpi_video_init_brightness() on init"
  Revert "genetlink: fix family dump race"
  ...

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index db690a372260..71af122edf2d 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1074,8 +1074,9 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
         u32 rxhash;
 
         if (!(tun->flags & TUN_NO_PI)) {
-                if ((len -= sizeof(pi)) > total_len)
+                if (len < sizeof(pi))
                         return -EINVAL;
+                len -= sizeof(pi);
 
                 if (memcpy_fromiovecend((void *)&pi, iv, 0, sizeof(pi)))
                         return -EFAULT;
@@ -1083,8 +1084,9 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
         }
 
         if (tun->flags & TUN_VNET_HDR) {
-                if ((len -= tun->vnet_hdr_sz) > total_len)
+                if (len < tun->vnet_hdr_sz)
                         return -EINVAL;
+                len -= tun->vnet_hdr_sz;
 
                 if (memcpy_fromiovecend((void *)&gso, iv, offset, sizeof(gso)))
                         return -EFAULT;