Merge 4.19.25 into android-4.19

Changes in 4.19.25
	af_packet: fix raw sockets over 6in4 tunnel
	dsa: mv88e6xxx: Ensure all pending interrupts are handled prior to exit
	mlxsw: __mlxsw_sp_port_headroom_set(): Fix a use of local variable
	net: crypto set sk to NULL when af_alg_release.
	net: Fix for_each_netdev_feature on Big endian
	net: fix IPv6 prefix route residue
	net: ip6_gre: initialize erspan_ver just for erspan tunnels
	net: ipv4: use a dedicated counter for icmp_v4 redirect packets
	net: phy: xgmiitorgmii: Support generic PHY status read
	net: stmmac: Fix a race in EEE enable callback
	net: stmmac: handle endianness in dwmac4_get_timestamp
	sky2: Increase D3 delay again
	vhost: correctly check the return value of translate_desc() in log_used()
	vsock: cope with memory allocation failure at socket creation time
	vxlan: test dev->flags & IFF_UP before calling netif_rx()
	net: Add header for usage of fls64()
	tcp: clear icsk_backoff in tcp_write_queue_purge()
	tcp: tcp_v4_err() should be more careful
	net: Do not allocate page fragments that are not skb aligned
	hwmon: (lm80) Fix missing unlock on error in set_fan_div()
	scsi: target/core: Use kmem_cache_free() instead of kfree()
	mmc: meson-gx: fix interrupt name
	PCI: Fix __initdata issue with "pci=disable_acs_redir" parameter
	sunrpc: fix 4 more call sites that were using stack memory with a scatterlist
	netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs
	net/x25: do not hold the cpu too long in x25_new_lci()
	mISDN: fix a race in dev_expire_timer()
	ax25: fix possible use-after-free
	Linux 4.19.25

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

crypto/af_alg.c

@@ -122,8 +122,10 @@ static void alg_do_release(const struct af_alg_type *type, void *private)
 
 int af_alg_release(struct socket *sock)
 {
-	if (sock->sk)
+	if (sock->sk) {
 		sock_put(sock->sk);
+		sock->sk = NULL;
+	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(af_alg_release);