Merge 4.4.71 into android-4.4

Changes in 4.4.71
	sparc: Fix -Wstringop-overflow warning
	dccp/tcp: do not inherit mc_list from parent
	ipv6/dccp: do not inherit ipv6_mc_list from parent
	s390/qeth: handle sysfs error during initialization
	s390/qeth: unbreak OSM and OSN support
	s390/qeth: avoid null pointer dereference on OSN
	tcp: avoid fragmenting peculiar skbs in SACK
	sctp: fix src address selection if using secondary addresses for ipv6
	sctp: do not inherit ipv6_{mc|ac|fl}_list from parent
	tcp: eliminate negative reordering in tcp_clean_rtx_queue
	net: Improve handling of failures on link and route dumps
	ipv6: Prevent overrun when parsing v6 header options
	ipv6: Check ip6_find_1stfragopt() return value properly.
	bridge: netlink: check vlan_default_pvid range
	qmi_wwan: add another Lenovo EM74xx device ID
	bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
	ipv6: fix out of bound writes in __ip6_append_data()
	be2net: Fix offload features for Q-in-Q packets
	virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
	tcp: avoid fastopen API to be used on AF_UNSPEC
	sctp: fix ICMP processing if skb is non-linear
	ipv4: add reference counting to metrics
	netem: fix skb_orphan_partial()
	net: phy: marvell: Limit errata to 88m1101
	vlan: Fix tcp checksum offloads in Q-in-Q vlans
	i2c: i2c-tiny-usb: fix buffer not being DMA capable
	mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
	HID: wacom: Have wacom_tpc_irq guard against possible NULL dereference
	scsi: mpt3sas: Force request partial completion alignment
	drm/radeon/ci: disable mclk switching for high refresh rates (v2)
	drm/radeon: Unbreak HPD handling for r600+
	pcmcia: remove left-over %Z format
	ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
	slub/memcg: cure the brainless abuse of sysfs attributes
	drm/gma500/psb: Actually use VBT mode when it is found
	mm/migrate: fix refcount handling when !hugepage_migration_supported()
	mlock: fix mlock count can not decrease in race condition
	xfs: Fix missed holes in SEEK_HOLE implementation
	xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
	xfs: fix over-copying of getbmap parameters from userspace
	xfs: handle array index overrun in xfs_dir2_leaf_readbuf()
	xfs: prevent multi-fsb dir readahead from reading random blocks
	xfs: fix up quotacheck buffer list error handling
	xfs: support ability to wait on new inodes
	xfs: update ag iterator to support wait on new inodes
	xfs: wait on new inodes during quotaoff dquot release
	xfs: fix indlen accounting error on partial delalloc conversion
	xfs: bad assertion for delalloc an extent that start at i_size
	xfs: fix unaligned access in xfs_btree_visit_blocks
	xfs: in _attrlist_by_handle, copy the cursor back to userspace
	xfs: only return -errno or success from attr ->put_listent
	Linux 4.4.71

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 0689430b7a8b..2871364e4420 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1690,17 +1690,17 @@ EXPORT_SYMBOL(skb_set_owner_w);
 
 void skb_orphan_partial(struct sk_buff *skb)
 {
-	/* TCP stack sets skb->ooo_okay based on sk_wmem_alloc,
-	 * so we do not completely orphan skb, but transfert all
-	 * accounted bytes but one, to avoid unexpected reorders.
-	 */
 	if (skb->destructor == sock_wfree
 #ifdef CONFIG_INET
 	    || skb->destructor == tcp_wfree
 #endif
 		) {
-		atomic_sub(skb->truesize - 1, &skb->sk->sk_wmem_alloc);
-		skb->truesize = 1;
+		struct sock *sk = skb->sk;
+
+		if (atomic_inc_not_zero(&sk->sk_refcnt)) {
+			atomic_sub(skb->truesize, &sk->sk_wmem_alloc);
+			skb->destructor = sock_efree;
+		}
 	} else {
 		skb_orphan(skb);
 	}