diff --git a/CREDITS b/CREDITS
index 9fbd2c7..a3ec0c7 100644
--- a/CREDITS
+++ b/CREDITS
@@ -2113,6 +2113,10 @@
 S: NL-5216 GP 's-Hertogenbosch
 S: The Netherlands
 
+N: Ashley Lai
+E: ashleydlai@gmail.com
+D: IBM VTPM driver
+
 N: Savio Lam
 E: lam836@cs.cuhk.hk
 D: Author of the dialog utility, foundation
@@ -3333,6 +3337,10 @@
 S: 31134 Hildesheim
 S: Germany
 
+N: Marcel Selhorst
+E: tpmdd@selhorst.net
+D: TPM driver
+
 N: Darren Senn
 E: sinster@darkwater.com
 D: Whatever I notice needs doing (so far: itimers, /proc)
@@ -4128,7 +4136,6 @@
 D: EISA/sysfs subsystem
 S: France
 
-
 # Don't add your name here, unless you really _are_ after Marc
 # alphabetically. Leonard used to be very proud of being the 
 # last entry, and he'll get positively pissed if he can't even
diff --git a/MAINTAINERS b/MAINTAINERS
index 2f4e462..2811a21 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7745,6 +7745,11 @@
 F:	Documentation/scsi/53c700.txt
 F:	drivers/scsi/53c700*
 
+LEAKING_ADDRESSES
+M:	Tobin C. Harding <me@tobin.cc>
+S:	Maintained
+F:	scripts/leaking_addresses.pl
+
 LED SUBSYSTEM
 M:	Richard Purdie <rpurdie@rpsys.net>
 M:	Jacek Anaszewski <jacek.anaszewski@gmail.com>
@@ -10336,7 +10341,6 @@
 
 PCI DRIVER FOR MICROSEMI SWITCHTEC
 M:	Kurt Schwemmer <kurt.schwemmer@microsemi.com>
-M:	Stephen Bates <stephen.bates@microsemi.com>
 M:	Logan Gunthorpe <logang@deltatee.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
@@ -10401,6 +10405,7 @@
 
 PCI ENDPOINT SUBSYSTEM
 M:	Kishon Vijay Abraham I <kishon@ti.com>
+M:	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
 L:	linux-pci@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kishon/pci-endpoint.git
 S:	Supported
@@ -10452,6 +10457,15 @@
 F:	arch/x86/pci/
 F:	arch/x86/kernel/quirks.c
 
+PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS
+M:	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
+L:	linux-pci@vger.kernel.org
+Q:	http://patchwork.ozlabs.org/project/linux-pci/list/
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/
+S:	Supported
+F:	drivers/pci/host/
+F:	drivers/pci/dwc/
+
 PCIE DRIVER FOR AXIS ARTPEC
 M:	Niklas Cassel <niklas.cassel@axis.com>
 M:	Jesper Nilsson <jesper.nilsson@axis.com>
@@ -10471,7 +10485,6 @@
 
 PCIE DRIVER FOR HISILICON
 M:	Zhou Wang <wangzhou1@hisilicon.com>
-M:	Gabriele Paoloni <gabriele.paoloni@huawei.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
@@ -13598,23 +13611,14 @@
 
 TPM DEVICE DRIVER
 M:	Peter Huewe <peterhuewe@gmx.de>
-M:	Marcel Selhorst <tpmdd@selhorst.net>
 M:	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
 R:	Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
-W:	http://tpmdd.sourceforge.net
-L:	tpmdd-devel@lists.sourceforge.net (moderated for non-subscribers)
-Q:	https://patchwork.kernel.org/project/tpmdd-devel/list/
+L:	linux-integrity@vger.kernel.org
+Q:	https://patchwork.kernel.org/project/linux-integrity/list/
 T:	git git://git.infradead.org/users/jjs/linux-tpmdd.git
 S:	Maintained
 F:	drivers/char/tpm/
 
-TPM IBM_VTPM DEVICE DRIVER
-M:	Ashley Lai <ashleydlai@gmail.com>
-W:	http://tpmdd.sourceforge.net
-L:	tpmdd-devel@lists.sourceforge.net (moderated for non-subscribers)
-S:	Maintained
-F:	drivers/char/tpm/tpm_ibmvtpm*
-
 TRACING
 M:	Steven Rostedt <rostedt@goodmis.org>
 M:	Ingo Molnar <mingo@redhat.com>
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 948c648..0fcd82f 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -154,30 +154,26 @@
 	set_fs(fs);
 }
 
-static void dump_instr(const char *lvl, struct pt_regs *regs)
+static void __dump_instr(const char *lvl, struct pt_regs *regs)
 {
 	unsigned long addr = instruction_pointer(regs);
 	const int thumb = thumb_mode(regs);
 	const int width = thumb ? 4 : 8;
-	mm_segment_t fs;
 	char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
 	int i;
 
 	/*
-	 * We need to switch to kernel mode so that we can use __get_user
-	 * to safely read from kernel space.  Note that we now dump the
-	 * code first, just in case the backtrace kills us.
+	 * Note that we now dump the code first, just in case the backtrace
+	 * kills us.
 	 */
-	fs = get_fs();
-	set_fs(KERNEL_DS);
 
 	for (i = -4; i < 1 + !!thumb; i++) {
 		unsigned int val, bad;
 
 		if (thumb)
-			bad = __get_user(val, &((u16 *)addr)[i]);
+			bad = get_user(val, &((u16 *)addr)[i]);
 		else
-			bad = __get_user(val, &((u32 *)addr)[i]);
+			bad = get_user(val, &((u32 *)addr)[i]);
 
 		if (!bad)
 			p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
@@ -188,8 +184,20 @@
 		}
 	}
 	printk("%sCode: %s\n", lvl, str);
+}
 
-	set_fs(fs);
+static void dump_instr(const char *lvl, struct pt_regs *regs)
+{
+	mm_segment_t fs;
+
+	if (!user_mode(regs)) {
+		fs = get_fs();
+		set_fs(KERNEL_DS);
+		__dump_instr(lvl, regs);
+		set_fs(fs);
+	} else {
+		__dump_instr(lvl, regs);
+	}
 }
 
 #ifdef CONFIG_ARM_UNWIND
diff --git a/arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S
index 93b9455..7cfba73 100644
--- a/arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S
+++ b/arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S
@@ -157,8 +157,8 @@
 .endr
 
 	# Find min length
-	vmovdqa _lens+0*16(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens+0*16(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2     # xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3   # xmm3 has {x,x,D,C}
@@ -178,8 +178,8 @@
 	vpsubd  %xmm2, %xmm0, %xmm0
 	vpsubd  %xmm2, %xmm1, %xmm1
 
-	vmovdqa %xmm0, _lens+0*16(state)
-	vmovdqa %xmm1, _lens+1*16(state)
+	vmovdqu %xmm0, _lens+0*16(state)
+	vmovdqu %xmm1, _lens+1*16(state)
 
 	# "state" and "args" are the same address, arg1
 	# len is arg2
@@ -235,8 +235,8 @@
 	jc      .return_null
 
 	# Find min length
-	vmovdqa _lens(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2        # xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3   # xmm3 has {x,x,D,C}
diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
index 8fe6338..16c4ccb 100644
--- a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
+++ b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S
@@ -155,8 +155,8 @@
 .endr
 
 	# Find min length
-	vmovdqa _lens+0*16(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens+0*16(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2		# xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3	# xmm3 has {x,x,D,C}
@@ -176,8 +176,8 @@
 	vpsubd	%xmm2, %xmm0, %xmm0
 	vpsubd	%xmm2, %xmm1, %xmm1
 
-	vmovdqa	%xmm0, _lens+0*16(state)
-	vmovdqa	%xmm1, _lens+1*16(state)
+	vmovdqu	%xmm0, _lens+0*16(state)
+	vmovdqu	%xmm1, _lens+1*16(state)
 
 	# "state" and "args" are the same address, arg1
 	# len is arg2
@@ -234,8 +234,8 @@
 	jc	.return_null
 
 	# Find min length
-	vmovdqa	_lens(state), %xmm0
-	vmovdqa	_lens+1*16(state), %xmm1
+	vmovdqu	_lens(state), %xmm0
+	vmovdqu	_lens+1*16(state), %xmm1
 
 	vpminud	%xmm1, %xmm0, %xmm2		# xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3	# xmm3 has {x,x,D,C}
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c
index 16c5f37..0286327 100644
--- a/arch/x86/mm/mem_encrypt.c
+++ b/arch/x86/mm/mem_encrypt.c
@@ -40,7 +40,7 @@
  * section is later cleared.
  */
 u64 sme_me_mask __section(.data) = 0;
-EXPORT_SYMBOL_GPL(sme_me_mask);
+EXPORT_SYMBOL(sme_me_mask);
 
 /* Buffer used for early in-place encryption by BSP, no locking needed */
 static char sme_early_buffer[PAGE_SIZE] __aligned(PAGE_SIZE);
diff --git a/crypto/ccm.c b/crypto/ccm.c
index 1ce37ae..0a08334 100644
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -363,7 +363,7 @@
 	unsigned int cryptlen = req->cryptlen;
 	u8 *authtag = pctx->auth_tag;
 	u8 *odata = pctx->odata;
-	u8 *iv = req->iv;
+	u8 *iv = pctx->idata;
 	int err;
 
 	cryptlen -= authsize;
@@ -379,6 +379,8 @@
 	if (req->src != req->dst)
 		dst = pctx->dst;
 
+	memcpy(iv, req->iv, 16);
+
 	skcipher_request_set_tfm(skreq, ctx->ctr);
 	skcipher_request_set_callback(skreq, pctx->flags,
 				      crypto_ccm_decrypt_done, req);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 6804dda..8082871 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -160,6 +160,14 @@
 	return 0;
 }
 
+static bool acpi_sleep_no_lps0;
+
+static int __init init_no_lps0(const struct dmi_system_id *d)
+{
+	acpi_sleep_no_lps0 = true;
+	return 0;
+}
+
 static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
 	{
 	.callback = init_old_suspend_ordering,
@@ -343,6 +351,19 @@
 		DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
 		},
 	},
+	/*
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=196907
+	 * Some Dell XPS13 9360 cannot do suspend-to-idle using the Low Power
+	 * S0 Idle firmware interface.
+	 */
+	{
+	.callback = init_no_lps0,
+	.ident = "Dell XPS13 9360",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
+		},
+	},
 	{},
 };
 
@@ -485,6 +506,7 @@
 }
 #else /* !CONFIG_ACPI_SLEEP */
 #define acpi_target_sleep_state	ACPI_STATE_S0
+#define acpi_sleep_no_lps0	(false)
 static inline void acpi_sleep_dmi_check(void) {}
 #endif /* CONFIG_ACPI_SLEEP */
 
@@ -863,6 +885,12 @@
 	if (lps0_device_handle)
 		return 0;
 
+	if (acpi_sleep_no_lps0) {
+		acpi_handle_info(adev->handle,
+				 "Low Power S0 Idle interface disabled\n");
+		return 0;
+	}
+
 	if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
 		return 0;
 
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index a7355ab..6ff0be8 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -867,11 +867,16 @@
 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
 {
 	struct cdrom_info *info = drive->driver_data;
-	struct cdrom_device_info *cdi = &info->devinfo;
+	struct cdrom_device_info *cdi;
 	unsigned char cmd[BLK_MAX_CDB];
 
 	ide_debug_log(IDE_DBG_FUNC, "enter");
 
+	if (!info)
+		return -EIO;
+
+	cdi = &info->devinfo;
+
 	memset(cmd, 0, BLK_MAX_CDB);
 	cmd[0] = GPCMD_TEST_UNIT_READY;
 
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index c99dc59..b2db581 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2042,6 +2042,7 @@
 
 	bond_for_each_slave_rcu(bond, slave, iter) {
 		slave->new_link = BOND_LINK_NOCHANGE;
+		slave->link_new_state = slave->link;
 
 		link_state = bond_check_dev_link(bond, slave->dev, 0);
 
@@ -3253,7 +3254,7 @@
 	hash ^= (hash >> 16);
 	hash ^= (hash >> 8);
 
-	return hash;
+	return hash >> 1;
 }
 
 /*-------------------------- Device entry points ----------------------------*/
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4fw_version.h b/drivers/net/ethernet/chelsio/cxgb4/t4fw_version.h
index f2d623a..123e2c1 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4fw_version.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4fw_version.h
@@ -37,7 +37,7 @@
 
 #define T4FW_VERSION_MAJOR 0x01
 #define T4FW_VERSION_MINOR 0x10
-#define T4FW_VERSION_MICRO 0x2D
+#define T4FW_VERSION_MICRO 0x3F
 #define T4FW_VERSION_BUILD 0x00
 
 #define T4FW_MIN_VERSION_MAJOR 0x01
@@ -46,7 +46,7 @@
 
 #define T5FW_VERSION_MAJOR 0x01
 #define T5FW_VERSION_MINOR 0x10
-#define T5FW_VERSION_MICRO 0x2D
+#define T5FW_VERSION_MICRO 0x3F
 #define T5FW_VERSION_BUILD 0x00
 
 #define T5FW_MIN_VERSION_MAJOR 0x00
@@ -55,7 +55,7 @@
 
 #define T6FW_VERSION_MAJOR 0x01
 #define T6FW_VERSION_MINOR 0x10
-#define T6FW_VERSION_MICRO 0x2D
+#define T6FW_VERSION_MICRO 0x3F
 #define T6FW_VERSION_BUILD 0x00
 
 #define T6FW_MIN_VERSION_MAJOR 0x00
diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index a37af58..fcf9ba5 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -6747,6 +6747,9 @@
 	for (i = 0; i < port->nqvecs; i++) {
 		struct mvpp2_queue_vector *qv = port->qvecs + i;
 
+		if (qv->type == MVPP2_QUEUE_VECTOR_PRIVATE)
+			irq_set_status_flags(qv->irq, IRQ_NO_BALANCING);
+
 		err = request_irq(qv->irq, mvpp2_isr, 0, port->dev->name, qv);
 		if (err)
 			goto err;
@@ -6776,6 +6779,7 @@
 		struct mvpp2_queue_vector *qv = port->qvecs + i;
 
 		irq_set_affinity_hint(qv->irq, NULL);
+		irq_clear_status_flags(qv->irq, IRQ_NO_BALANCING);
 		free_irq(qv->irq, qv);
 	}
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 850cdc9..4837045 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -365,21 +365,24 @@
 				    struct mlx5e_l2_hash_node *hn)
 {
 	u8 action = hn->action;
+	u8 mac_addr[ETH_ALEN];
 	int l2_err = 0;
 
+	ether_addr_copy(mac_addr, hn->ai.addr);
+
 	switch (action) {
 	case MLX5E_ACTION_ADD:
 		mlx5e_add_l2_flow_rule(priv, &hn->ai, MLX5E_FULLMATCH);
-		if (!is_multicast_ether_addr(hn->ai.addr)) {
-			l2_err = mlx5_mpfs_add_mac(priv->mdev, hn->ai.addr);
+		if (!is_multicast_ether_addr(mac_addr)) {
+			l2_err = mlx5_mpfs_add_mac(priv->mdev, mac_addr);
 			hn->mpfs = !l2_err;
 		}
 		hn->action = MLX5E_ACTION_NONE;
 		break;
 
 	case MLX5E_ACTION_DEL:
-		if (!is_multicast_ether_addr(hn->ai.addr) && hn->mpfs)
-			l2_err = mlx5_mpfs_del_mac(priv->mdev, hn->ai.addr);
+		if (!is_multicast_ether_addr(mac_addr) && hn->mpfs)
+			l2_err = mlx5_mpfs_del_mac(priv->mdev, mac_addr);
 		mlx5e_del_l2_flow_rule(priv, &hn->ai);
 		mlx5e_del_l2_from_hash(hn);
 		break;
@@ -387,7 +390,7 @@
 
 	if (l2_err)
 		netdev_warn(priv->netdev, "MPFS, failed to %s mac %pM, err(%d)\n",
-			    action == MLX5E_ACTION_ADD ? "add" : "del", hn->ai.addr, l2_err);
+			    action == MLX5E_ACTION_ADD ? "add" : "del", mac_addr, l2_err);
 }
 
 static void mlx5e_sync_netdev_addr(struct mlx5e_priv *priv)
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index b2ff88e..3d4f795 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -626,7 +626,7 @@
 	struct usbnet *dev = usb_get_intfdata(intf);
 	struct asix_common_private *priv = dev->driver_priv;
 
-	if (priv->suspend)
+	if (priv && priv->suspend)
 		priv->suspend(dev);
 
 	return usbnet_suspend(intf, message);
@@ -678,7 +678,7 @@
 	struct usbnet *dev = usb_get_intfdata(intf);
 	struct asix_common_private *priv = dev->driver_priv;
 
-	if (priv->resume)
+	if (priv && priv->resume)
 		priv->resume(dev);
 
 	return usbnet_resume(intf);
diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 3e7a3ac..05dca3e 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -230,7 +230,7 @@
 			goto bad_desc;
 	}
 
-	if (header.usb_cdc_ether_desc) {
+	if (header.usb_cdc_ether_desc && info->ether->wMaxSegmentSize) {
 		dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
 		/* because of Zaurus, we may be ignoring the host
 		 * side link address we were given.
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 8c37336..8d4a6f7 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -499,6 +499,7 @@
 		return 1;
 	}
 	if (rawip) {
+		skb_reset_mac_header(skb);
 		skb->dev = dev->net; /* normally set by eth_type_trans */
 		skb->protocol = proto;
 		return 1;
@@ -681,7 +682,7 @@
 	}
 
 	/* errors aren't fatal - we can live with the dynamic address */
-	if (cdc_ether) {
+	if (cdc_ether && cdc_ether->wMaxSegmentSize) {
 		dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
 		usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
 	}
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index ad3ea24..bcc1694 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2685,7 +2685,6 @@
 
 	}
 	sdev->sdev_state = state;
-	sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 	return 0;
 
  illegal:
@@ -3109,7 +3108,6 @@
 	case SDEV_BLOCK:
 	case SDEV_TRANSPORT_OFFLINE:
 		sdev->sdev_state = new_state;
-		sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 		break;
 	case SDEV_CREATED_BLOCK:
 		if (new_state == SDEV_TRANSPORT_OFFLINE ||
@@ -3117,7 +3115,6 @@
 			sdev->sdev_state = new_state;
 		else
 			sdev->sdev_state = SDEV_CREATED;
-		sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 		break;
 	case SDEV_CANCEL:
 	case SDEV_OFFLINE:
diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index 4f6f01c..36f6190 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -556,11 +556,8 @@
 		 */
 		shost_for_each_device(sdev, shost) {
 			mutex_lock(&sdev->state_mutex);
-			if (sdev->sdev_state == SDEV_OFFLINE) {
+			if (sdev->sdev_state == SDEV_OFFLINE)
 				sdev->sdev_state = SDEV_RUNNING;
-				sysfs_notify(&sdev->sdev_gendev.kobj,
-					     NULL, "state");
-			}
 			mutex_unlock(&sdev->state_mutex);
 		}
 	} else if (rport->state == SRP_RPORT_RUNNING) {
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 72299ef..d448a48 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3770,6 +3770,13 @@
 #endif
 }
 
+static inline void ipvs_reset(struct sk_buff *skb)
+{
+#if IS_ENABLED(CONFIG_IP_VS)
+	skb->ipvs_property = 0;
+#endif
+}
+
 /* Note: This doesn't put any conntrack and bridge info in dst. */
 static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src,
 			     bool copy)
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 74f91ee..b769ecf 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -213,6 +213,11 @@
 	return NULL;
 }
 
+static inline struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table)
+{
+	return NULL;
+}
+
 static inline void unregister_sysctl_table(struct ctl_table_header * table)
 {
 }
diff --git a/include/net/act_api.h b/include/net/act_api.h
index 1e6df0e..a10a3b1 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -14,7 +14,6 @@
 struct tcf_idrinfo {
 	spinlock_t	lock;
 	struct idr	action_idr;
-	struct net	*net;
 };
 
 struct tc_action_ops;
@@ -106,7 +105,7 @@
 
 static inline
 int tc_action_net_init(struct tc_action_net *tn,
-		       const struct tc_action_ops *ops, struct net *net)
+		       const struct tc_action_ops *ops)
 {
 	int err = 0;
 
@@ -114,7 +113,6 @@
 	if (!tn->idrinfo)
 		return -ENOMEM;
 	tn->ops = ops;
-	tn->idrinfo->net = net;
 	spin_lock_init(&tn->idrinfo->lock);
 	idr_init(&tn->idrinfo->action_idr);
 	return err;
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 70ca243..8826747 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -94,6 +94,7 @@
 	__u32	type; /* for backward compat(TCA_OLD_COMPAT) */
 	int nr_actions;
 	struct tc_action **actions;
+	struct net *net;
 #endif
 	/* Map to export classifier specific extension TLV types to the
 	 * generic extensions API. Unsupported extensions must be set to 0.
@@ -107,6 +108,7 @@
 #ifdef CONFIG_NET_CLS_ACT
 	exts->type = 0;
 	exts->nr_actions = 0;
+	exts->net = NULL;
 	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
 				GFP_KERNEL);
 	if (!exts->actions)
@@ -117,6 +119,28 @@
 	return 0;
 }
 
+/* Return false if the netns is being destroyed in cleanup_net(). Callers
+ * need to do cleanup synchronously in this case, otherwise may race with
+ * tc_action_net_exit(). Return true for other cases.
+ */
+static inline bool tcf_exts_get_net(struct tcf_exts *exts)
+{
+#ifdef CONFIG_NET_CLS_ACT
+	exts->net = maybe_get_net(exts->net);
+	return exts->net != NULL;
+#else
+	return true;
+#endif
+}
+
+static inline void tcf_exts_put_net(struct tcf_exts *exts)
+{
+#ifdef CONFIG_NET_CLS_ACT
+	if (exts->net)
+		put_net(exts->net);
+#endif
+}
+
 static inline void tcf_exts_to_list(const struct tcf_exts *exts,
 				    struct list_head *actions)
 {
diff --git a/include/sound/seq_kernel.h b/include/sound/seq_kernel.h
index feb58d4..4b9ee30 100644
--- a/include/sound/seq_kernel.h
+++ b/include/sound/seq_kernel.h
@@ -49,7 +49,8 @@
 #define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS	200
 
 /* max delivery path length */
-#define SNDRV_SEQ_MAX_HOPS		10
+/* NOTE: this shouldn't be greater than MAX_LOCKDEP_SUBCLASSES */
+#define SNDRV_SEQ_MAX_HOPS		8
 
 /* max size of event size */
 #define SNDRV_SEQ_MAX_EVENT_LEN		0x3fffffff
diff --git a/include/sound/timer.h b/include/sound/timer.h
index c4d76ff..7ae226a 100644
--- a/include/sound/timer.h
+++ b/include/sound/timer.h
@@ -90,6 +90,8 @@
 	struct list_head ack_list_head;
 	struct list_head sack_list_head; /* slow ack list head */
 	struct tasklet_struct task_queue;
+	int max_instances;	/* upper limit of timer instances */
+	int num_instances;	/* current number of timer instances */
 };
 
 struct snd_timer_instance {
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 9209d83..ba0da24 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -649,6 +649,7 @@
 		struct sugov_cpu *sg_cpu = &per_cpu(sugov_cpu, cpu);
 
 		memset(sg_cpu, 0, sizeof(*sg_cpu));
+		sg_cpu->cpu = cpu;
 		sg_cpu->sg_policy = sg_policy;
 		sg_cpu->flags = SCHED_CPUFREQ_RT;
 		sg_cpu->iowait_boost_max = policy->cpuinfo.max_freq;
@@ -714,11 +715,6 @@
 
 static int __init sugov_register(void)
 {
-	int cpu;
-
-	for_each_possible_cpu(cpu)
-		per_cpu(sugov_cpu, cpu).cpu = cpu;
-
 	return cpufreq_register_governor(&schedutil_gov);
 }
 fs_initcall(sugov_register);
diff --git a/kernel/workqueue_internal.h b/kernel/workqueue_internal.h
index efdd72e..d390d1b 100644
--- a/kernel/workqueue_internal.h
+++ b/kernel/workqueue_internal.h
@@ -10,6 +10,7 @@
 
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
+#include <linux/preempt.h>
 
 struct worker_pool;
 
@@ -60,7 +61,7 @@
  */
 static inline struct worker *current_wq_worker(void)
 {
-	if (current->flags & PF_WQ_WORKER)
+	if (in_task() && (current->flags & PF_WQ_WORKER))
 		return kthread_data(current);
 	return NULL;
 }
diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c
index fef5d2e..1ef0cec 100644
--- a/lib/asn1_decoder.c
+++ b/lib/asn1_decoder.c
@@ -228,7 +228,7 @@
 		hdr = 2;
 
 		/* Extract a tag from the data */
-		if (unlikely(dp >= datalen - 1))
+		if (unlikely(datalen - dp < 2))
 			goto data_overrun_error;
 		tag = data[dp++];
 		if (unlikely((tag & 0x1f) == ASN1_LONG_TAG))
@@ -274,7 +274,7 @@
 				int n = len - 0x80;
 				if (unlikely(n > 2))
 					goto length_too_long;
-				if (unlikely(dp >= datalen - n))
+				if (unlikely(n > datalen - dp))
 					goto data_overrun_error;
 				hdr += n;
 				for (len = 0; n > 0; n--) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 2465607..e140ba4 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4864,6 +4864,7 @@
 	if (!xnet)
 		return;
 
+	ipvs_reset(skb);
 	skb_orphan(skb);
 	skb->mark = 0;
 }
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 5a87a00..b2fc716 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -115,7 +115,7 @@
 
 #define FLAG_ACKED		(FLAG_DATA_ACKED|FLAG_SYN_ACKED)
 #define FLAG_NOT_DUP		(FLAG_DATA|FLAG_WIN_UPDATE|FLAG_ACKED)
-#define FLAG_CA_ALERT		(FLAG_DATA_SACKED|FLAG_ECE)
+#define FLAG_CA_ALERT		(FLAG_DATA_SACKED|FLAG_ECE|FLAG_DSACKING_ACK)
 #define FLAG_FORWARD_PROGRESS	(FLAG_ACKED|FLAG_DATA_SACKED)
 
 #define TCP_REMNANT (TCP_FLAG_FIN|TCP_FLAG_URG|TCP_FLAG_SYN|TCP_FLAG_PSH)
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 4d322c1..e4280b6 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -123,6 +123,7 @@
 	unsigned char *ptr, *optr;
 	struct l2tp_session *session;
 	struct l2tp_tunnel *tunnel = NULL;
+	struct iphdr *iph;
 	int length;
 
 	if (!pskb_may_pull(skb, 4))
@@ -178,24 +179,17 @@
 		goto discard;
 
 	tunnel_id = ntohl(*(__be32 *) &skb->data[4]);
-	tunnel = l2tp_tunnel_find(net, tunnel_id);
-	if (tunnel) {
-		sk = tunnel->sock;
-		sock_hold(sk);
-	} else {
-		struct iphdr *iph = (struct iphdr *) skb_network_header(skb);
+	iph = (struct iphdr *)skb_network_header(skb);
 
-		read_lock_bh(&l2tp_ip_lock);
-		sk = __l2tp_ip_bind_lookup(net, iph->daddr, iph->saddr,
-					   inet_iif(skb), tunnel_id);
-		if (!sk) {
-			read_unlock_bh(&l2tp_ip_lock);
-			goto discard;
-		}
-
-		sock_hold(sk);
+	read_lock_bh(&l2tp_ip_lock);
+	sk = __l2tp_ip_bind_lookup(net, iph->daddr, iph->saddr, inet_iif(skb),
+				   tunnel_id);
+	if (!sk) {
 		read_unlock_bh(&l2tp_ip_lock);
+		goto discard;
 	}
+	sock_hold(sk);
+	read_unlock_bh(&l2tp_ip_lock);
 
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_put;
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 88b397c..8bcaa97 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -136,6 +136,7 @@
 	unsigned char *ptr, *optr;
 	struct l2tp_session *session;
 	struct l2tp_tunnel *tunnel = NULL;
+	struct ipv6hdr *iph;
 	int length;
 
 	if (!pskb_may_pull(skb, 4))
@@ -192,24 +193,17 @@
 		goto discard;
 
 	tunnel_id = ntohl(*(__be32 *) &skb->data[4]);
-	tunnel = l2tp_tunnel_find(net, tunnel_id);
-	if (tunnel) {
-		sk = tunnel->sock;
-		sock_hold(sk);
-	} else {
-		struct ipv6hdr *iph = ipv6_hdr(skb);
+	iph = ipv6_hdr(skb);
 
-		read_lock_bh(&l2tp_ip6_lock);
-		sk = __l2tp_ip6_bind_lookup(net, &iph->daddr, &iph->saddr,
-					    inet6_iif(skb), tunnel_id);
-		if (!sk) {
-			read_unlock_bh(&l2tp_ip6_lock);
-			goto discard;
-		}
-
-		sock_hold(sk);
+	read_lock_bh(&l2tp_ip6_lock);
+	sk = __l2tp_ip6_bind_lookup(net, &iph->daddr, &iph->saddr,
+				    inet6_iif(skb), tunnel_id);
+	if (!sk) {
 		read_unlock_bh(&l2tp_ip6_lock);
+		goto discard;
 	}
+	sock_hold(sk);
+	read_unlock_bh(&l2tp_ip6_lock);
 
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_put;
diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index c2f5c13..78418f3 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -1085,7 +1085,7 @@
 
 	return 0;
 }
-module_init(qrtr_proto_init);
+postcore_initcall(qrtr_proto_init);
 
 static void __exit qrtr_proto_fini(void)
 {
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index ca2ff0b..8f2c635 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -78,7 +78,6 @@
 	spin_lock_bh(&idrinfo->lock);
 	idr_remove_ext(&idrinfo->action_idr, p->tcfa_index);
 	spin_unlock_bh(&idrinfo->lock);
-	put_net(idrinfo->net);
 	gen_kill_estimator(&p->tcfa_rate_est);
 	free_tcf(p);
 }
@@ -337,7 +336,6 @@
 	p->idrinfo = idrinfo;
 	p->ops = ops;
 	INIT_LIST_HEAD(&p->list);
-	get_net(idrinfo->net);
 	*a = p;
 	return 0;
 }
diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c
index 9bce8cc..c0c707e 100644
--- a/net/sched/act_bpf.c
+++ b/net/sched/act_bpf.c
@@ -398,7 +398,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, bpf_net_id);
 
-	return tc_action_net_init(tn, &act_bpf_ops, net);
+	return tc_action_net_init(tn, &act_bpf_ops);
 }
 
 static void __net_exit bpf_exit_net(struct net *net)
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
index 34e52d0..10b7a88 100644
--- a/net/sched/act_connmark.c
+++ b/net/sched/act_connmark.c
@@ -206,7 +206,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, connmark_net_id);
 
-	return tc_action_net_init(tn, &act_connmark_ops, net);
+	return tc_action_net_init(tn, &act_connmark_ops);
 }
 
 static void __net_exit connmark_exit_net(struct net *net)
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 35171df..1c40caa 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -626,7 +626,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, csum_net_id);
 
-	return tc_action_net_init(tn, &act_csum_ops, net);
+	return tc_action_net_init(tn, &act_csum_ops);
 }
 
 static void __net_exit csum_exit_net(struct net *net)
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index ef7f7f3..e29a48e 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -232,7 +232,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, gact_net_id);
 
-	return tc_action_net_init(tn, &act_gact_ops, net);
+	return tc_action_net_init(tn, &act_gact_ops);
 }
 
 static void __net_exit gact_exit_net(struct net *net)
diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c
index f65e4b5..8ccd358 100644
--- a/net/sched/act_ife.c
+++ b/net/sched/act_ife.c
@@ -818,7 +818,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, ife_net_id);
 
-	return tc_action_net_init(tn, &act_ife_ops, net);
+	return tc_action_net_init(tn, &act_ife_ops);
 }
 
 static void __net_exit ife_exit_net(struct net *net)
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index dbdf3b2..d9e399a 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -334,7 +334,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, ipt_net_id);
 
-	return tc_action_net_init(tn, &act_ipt_ops, net);
+	return tc_action_net_init(tn, &act_ipt_ops);
 }
 
 static void __net_exit ipt_exit_net(struct net *net)
@@ -384,7 +384,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, xt_net_id);
 
-	return tc_action_net_init(tn, &act_xt_ops, net);
+	return tc_action_net_init(tn, &act_xt_ops);
 }
 
 static void __net_exit xt_exit_net(struct net *net)
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 84759cf..416627c 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -343,7 +343,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, mirred_net_id);
 
-	return tc_action_net_init(tn, &act_mirred_ops, net);
+	return tc_action_net_init(tn, &act_mirred_ops);
 }
 
 static void __net_exit mirred_exit_net(struct net *net)
diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c
index 7eeaaf9..c365d01 100644
--- a/net/sched/act_nat.c
+++ b/net/sched/act_nat.c
@@ -307,7 +307,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, nat_net_id);
 
-	return tc_action_net_init(tn, &act_nat_ops, net);
+	return tc_action_net_init(tn, &act_nat_ops);
 }
 
 static void __net_exit nat_exit_net(struct net *net)
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index b3d82c3..491fe5d 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -450,7 +450,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, pedit_net_id);
 
-	return tc_action_net_init(tn, &act_pedit_ops, net);
+	return tc_action_net_init(tn, &act_pedit_ops);
 }
 
 static void __net_exit pedit_exit_net(struct net *net)
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index 9ec42b2..3bb2ebf 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -331,7 +331,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, police_net_id);
 
-	return tc_action_net_init(tn, &act_police_ops, net);
+	return tc_action_net_init(tn, &act_police_ops);
 }
 
 static void __net_exit police_exit_net(struct net *net)
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index e69a1e3..8b5abcd 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -240,7 +240,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, sample_net_id);
 
-	return tc_action_net_init(tn, &act_sample_ops, net);
+	return tc_action_net_init(tn, &act_sample_ops);
 }
 
 static void __net_exit sample_exit_net(struct net *net)
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index a8d0ea9..e7b57e5 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -201,7 +201,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, simp_net_id);
 
-	return tc_action_net_init(tn, &act_simp_ops, net);
+	return tc_action_net_init(tn, &act_simp_ops);
 }
 
 static void __net_exit simp_exit_net(struct net *net)
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index fbac624..59949d6 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -238,7 +238,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, skbedit_net_id);
 
-	return tc_action_net_init(tn, &act_skbedit_ops, net);
+	return tc_action_net_init(tn, &act_skbedit_ops);
 }
 
 static void __net_exit skbedit_exit_net(struct net *net)
diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c
index 8e12d88..b642ad3 100644
--- a/net/sched/act_skbmod.c
+++ b/net/sched/act_skbmod.c
@@ -263,7 +263,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, skbmod_net_id);
 
-	return tc_action_net_init(tn, &act_skbmod_ops, net);
+	return tc_action_net_init(tn, &act_skbmod_ops);
 }
 
 static void __net_exit skbmod_exit_net(struct net *net)
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index c33faa3..30c9627 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -322,7 +322,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
 
-	return tc_action_net_init(tn, &act_tunnel_key_ops, net);
+	return tc_action_net_init(tn, &act_tunnel_key_ops);
 }
 
 static void __net_exit tunnel_key_exit_net(struct net *net)
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 115fc33..16eb067 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -269,7 +269,7 @@
 {
 	struct tc_action_net *tn = net_generic(net, vlan_net_id);
 
-	return tc_action_net_init(tn, &act_vlan_ops, net);
+	return tc_action_net_init(tn, &act_vlan_ops);
 }
 
 static void __net_exit vlan_exit_net(struct net *net)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index b2d3107..ecbb019 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -927,6 +927,7 @@
 				exts->actions[i++] = act;
 			exts->nr_actions = i;
 		}
+		exts->net = net;
 	}
 #else
 	if ((exts->action && tb[exts->action]) ||
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index f177649..e43c56d 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -85,16 +85,21 @@
 	return 0;
 }
 
+static void __basic_delete_filter(struct basic_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_em_tree_destroy(&f->ematches);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void basic_delete_filter_work(struct work_struct *work)
 {
 	struct basic_filter *f = container_of(work, struct basic_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	tcf_em_tree_destroy(&f->ematches);
+	__basic_delete_filter(f);
 	rtnl_unlock();
-
-	kfree(f);
 }
 
 static void basic_delete_filter(struct rcu_head *head)
@@ -113,7 +118,10 @@
 	list_for_each_entry_safe(f, n, &head->flist, link) {
 		list_del_rcu(&f->link);
 		tcf_unbind_filter(tp, &f->res);
-		call_rcu(&f->rcu, basic_delete_filter);
+		if (tcf_exts_get_net(&f->exts))
+			call_rcu(&f->rcu, basic_delete_filter);
+		else
+			__basic_delete_filter(f);
 	}
 	kfree_rcu(head, rcu);
 }
@@ -125,6 +133,7 @@
 
 	list_del_rcu(&f->link);
 	tcf_unbind_filter(tp, &f->res);
+	tcf_exts_get_net(&f->exts);
 	call_rcu(&f->rcu, basic_delete_filter);
 	*last = list_empty(&head->flist);
 	return 0;
@@ -219,6 +228,7 @@
 	if (fold) {
 		list_replace_rcu(&fold->link, &fnew->link);
 		tcf_unbind_filter(tp, &fold->res);
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, basic_delete_filter);
 	} else {
 		list_add_rcu(&fnew->link, &head->flist);
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 037a3ae..990eb4d 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -249,6 +249,7 @@
 static void __cls_bpf_delete_prog(struct cls_bpf_prog *prog)
 {
 	tcf_exts_destroy(&prog->exts);
+	tcf_exts_put_net(&prog->exts);
 
 	if (cls_bpf_is_ebpf(prog))
 		bpf_prog_put(prog->filter);
@@ -282,7 +283,10 @@
 	cls_bpf_stop_offload(tp, prog);
 	list_del_rcu(&prog->link);
 	tcf_unbind_filter(tp, &prog->res);
-	call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
+	if (tcf_exts_get_net(&prog->exts))
+		call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
+	else
+		__cls_bpf_delete_prog(prog);
 }
 
 static int cls_bpf_delete(struct tcf_proto *tp, void *arg, bool *last)
@@ -516,6 +520,7 @@
 	if (oldprog) {
 		list_replace_rcu(&oldprog->link, &prog->link);
 		tcf_unbind_filter(tp, &oldprog->res);
+		tcf_exts_get_net(&oldprog->exts);
 		call_rcu(&oldprog->rcu, cls_bpf_delete_prog_rcu);
 	} else {
 		list_add_rcu(&prog->link, &head->plist);
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index a97e069..309d589 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -60,15 +60,21 @@
 	[TCA_CGROUP_EMATCHES]	= { .type = NLA_NESTED },
 };
 
+static void __cls_cgroup_destroy(struct cls_cgroup_head *head)
+{
+	tcf_exts_destroy(&head->exts);
+	tcf_em_tree_destroy(&head->ematches);
+	tcf_exts_put_net(&head->exts);
+	kfree(head);
+}
+
 static void cls_cgroup_destroy_work(struct work_struct *work)
 {
 	struct cls_cgroup_head *head = container_of(work,
 						    struct cls_cgroup_head,
 						    work);
 	rtnl_lock();
-	tcf_exts_destroy(&head->exts);
-	tcf_em_tree_destroy(&head->ematches);
-	kfree(head);
+	__cls_cgroup_destroy(head);
 	rtnl_unlock();
 }
 
@@ -124,8 +130,10 @@
 		goto errout;
 
 	rcu_assign_pointer(tp->root, new);
-	if (head)
+	if (head) {
+		tcf_exts_get_net(&head->exts);
 		call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+	}
 	return 0;
 errout:
 	tcf_exts_destroy(&new->exts);
@@ -138,8 +146,12 @@
 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
 
 	/* Head can still be NULL due to cls_cgroup_init(). */
-	if (head)
-		call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+	if (head) {
+		if (tcf_exts_get_net(&head->exts))
+			call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+		else
+			__cls_cgroup_destroy(head);
+	}
 }
 
 static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last)
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 67f3a2a..85f765c 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -372,15 +372,21 @@
 	[TCA_FLOW_PERTURB]	= { .type = NLA_U32 },
 };
 
+static void __flow_destroy_filter(struct flow_filter *f)
+{
+	del_timer_sync(&f->perturb_timer);
+	tcf_exts_destroy(&f->exts);
+	tcf_em_tree_destroy(&f->ematches);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void flow_destroy_filter_work(struct work_struct *work)
 {
 	struct flow_filter *f = container_of(work, struct flow_filter, work);
 
 	rtnl_lock();
-	del_timer_sync(&f->perturb_timer);
-	tcf_exts_destroy(&f->exts);
-	tcf_em_tree_destroy(&f->ematches);
-	kfree(f);
+	__flow_destroy_filter(f);
 	rtnl_unlock();
 }
 
@@ -552,8 +558,10 @@
 
 	*arg = fnew;
 
-	if (fold)
+	if (fold) {
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, flow_destroy_filter);
+	}
 	return 0;
 
 err2:
@@ -570,6 +578,7 @@
 	struct flow_filter *f = arg;
 
 	list_del_rcu(&f->list);
+	tcf_exts_get_net(&f->exts);
 	call_rcu(&f->rcu, flow_destroy_filter);
 	*last = list_empty(&head->filters);
 	return 0;
@@ -594,7 +603,10 @@
 
 	list_for_each_entry_safe(f, next, &head->filters, list) {
 		list_del_rcu(&f->list);
-		call_rcu(&f->rcu, flow_destroy_filter);
+		if (tcf_exts_get_net(&f->exts))
+			call_rcu(&f->rcu, flow_destroy_filter);
+		else
+			__flow_destroy_filter(f);
 	}
 	kfree_rcu(head, rcu);
 }
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 5b5722c..7a838d1 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -218,13 +218,19 @@
 	return 0;
 }
 
+static void __fl_destroy_filter(struct cls_fl_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void fl_destroy_filter_work(struct work_struct *work)
 {
 	struct cls_fl_filter *f = container_of(work, struct cls_fl_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	kfree(f);
+	__fl_destroy_filter(f);
 	rtnl_unlock();
 }
 
@@ -318,7 +324,10 @@
 	if (!tc_skip_hw(f->flags))
 		fl_hw_destroy_filter(tp, f);
 	tcf_unbind_filter(tp, &f->res);
-	call_rcu(&f->rcu, fl_destroy_filter);
+	if (tcf_exts_get_net(&f->exts))
+		call_rcu(&f->rcu, fl_destroy_filter);
+	else
+		__fl_destroy_filter(f);
 }
 
 static void fl_destroy_sleepable(struct work_struct *work)
@@ -988,6 +997,7 @@
 		idr_replace_ext(&head->handle_idr, fnew, fnew->handle);
 		list_replace_rcu(&fold->list, &fnew->list);
 		tcf_unbind_filter(tp, &fold->res);
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, fl_destroy_filter);
 	} else {
 		list_add_tail_rcu(&fnew->list, &head->filters);
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 99183b8..7f45e5a 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -122,13 +122,19 @@
 	return 0;
 }
 
+static void __fw_delete_filter(struct fw_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void fw_delete_filter_work(struct work_struct *work)
 {
 	struct fw_filter *f = container_of(work, struct fw_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	kfree(f);
+	__fw_delete_filter(f);
 	rtnl_unlock();
 }
 
@@ -154,7 +160,10 @@
 			RCU_INIT_POINTER(head->ht[h],
 					 rtnl_dereference(f->next));
 			tcf_unbind_filter(tp, &f->res);
-			call_rcu(&f->rcu, fw_delete_filter);
+			if (tcf_exts_get_net(&f->exts))
+				call_rcu(&f->rcu, fw_delete_filter);
+			else
+				__fw_delete_filter(f);
 		}
 	}
 	kfree_rcu(head, rcu);
@@ -179,6 +188,7 @@
 		if (pfp == f) {
 			RCU_INIT_POINTER(*fp, rtnl_dereference(f->next));
 			tcf_unbind_filter(tp, &f->res);
+			tcf_exts_get_net(&f->exts);
 			call_rcu(&f->rcu, fw_delete_filter);
 			ret = 0;
 			break;
@@ -299,6 +309,7 @@
 		RCU_INIT_POINTER(fnew->next, rtnl_dereference(pfp->next));
 		rcu_assign_pointer(*fp, fnew);
 		tcf_unbind_filter(tp, &f->res);
+		tcf_exts_get_net(&f->exts);
 		call_rcu(&f->rcu, fw_delete_filter);
 
 		*arg = fnew;
diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index c33f711..3684153 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -44,13 +44,19 @@
 	return 0;
 }
 
+static void __mall_destroy(struct cls_mall_head *head)
+{
+	tcf_exts_destroy(&head->exts);
+	tcf_exts_put_net(&head->exts);
+	kfree(head);
+}
+
 static void mall_destroy_work(struct work_struct *work)
 {
 	struct cls_mall_head *head = container_of(work, struct cls_mall_head,
 						  work);
 	rtnl_lock();
-	tcf_exts_destroy(&head->exts);
-	kfree(head);
+	__mall_destroy(head);
 	rtnl_unlock();
 }
 
@@ -109,7 +115,10 @@
 	if (tc_should_offload(dev, head->flags))
 		mall_destroy_hw_filter(tp, head, (unsigned long) head);
 
-	call_rcu(&head->rcu, mall_destroy_rcu);
+	if (tcf_exts_get_net(&head->exts))
+		call_rcu(&head->rcu, mall_destroy_rcu);
+	else
+		__mall_destroy(head);
 }
 
 static void *mall_get(struct tcf_proto *tp, u32 handle)
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 4b14ccd..ac9a5b8 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -257,13 +257,19 @@
 	return 0;
 }
 
+static void __route4_delete_filter(struct route4_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void route4_delete_filter_work(struct work_struct *work)
 {
 	struct route4_filter *f = container_of(work, struct route4_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	kfree(f);
+	__route4_delete_filter(f);
 	rtnl_unlock();
 }
 
@@ -297,7 +303,10 @@
 					next = rtnl_dereference(f->next);
 					RCU_INIT_POINTER(b->ht[h2], next);
 					tcf_unbind_filter(tp, &f->res);
-					call_rcu(&f->rcu, route4_delete_filter);
+					if (tcf_exts_get_net(&f->exts))
+						call_rcu(&f->rcu, route4_delete_filter);
+					else
+						__route4_delete_filter(f);
 				}
 			}
 			RCU_INIT_POINTER(head->table[h1], NULL);
@@ -338,6 +347,7 @@
 
 			/* Delete it */
 			tcf_unbind_filter(tp, &f->res);
+			tcf_exts_get_net(&f->exts);
 			call_rcu(&f->rcu, route4_delete_filter);
 
 			/* Strip RTNL protected tree */
@@ -541,6 +551,7 @@
 	*arg = f;
 	if (fold) {
 		tcf_unbind_filter(tp, &fold->res);
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, route4_delete_filter);
 	}
 	return 0;
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
index bdbc541..cf325625 100644
--- a/net/sched/cls_rsvp.h
+++ b/net/sched/cls_rsvp.h
@@ -285,13 +285,19 @@
 	return -ENOBUFS;
 }
 
+static void __rsvp_delete_filter(struct rsvp_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void rsvp_delete_filter_work(struct work_struct *work)
 {
 	struct rsvp_filter *f = container_of(work, struct rsvp_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	kfree(f);
+	__rsvp_delete_filter(f);
 	rtnl_unlock();
 }
 
@@ -310,7 +316,10 @@
 	 * grace period, since converted-to-rcu actions are relying on that
 	 * in cleanup() callback
 	 */
-	call_rcu(&f->rcu, rsvp_delete_filter_rcu);
+	if (tcf_exts_get_net(&f->exts))
+		call_rcu(&f->rcu, rsvp_delete_filter_rcu);
+	else
+		__rsvp_delete_filter(f);
 }
 
 static void rsvp_destroy(struct tcf_proto *tp)
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index beaa95e..a76937e 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -139,13 +139,19 @@
 	return 0;
 }
 
+static void __tcindex_destroy_rexts(struct tcindex_filter_result *r)
+{
+	tcf_exts_destroy(&r->exts);
+	tcf_exts_put_net(&r->exts);
+}
+
 static void tcindex_destroy_rexts_work(struct work_struct *work)
 {
 	struct tcindex_filter_result *r;
 
 	r = container_of(work, struct tcindex_filter_result, work);
 	rtnl_lock();
-	tcf_exts_destroy(&r->exts);
+	__tcindex_destroy_rexts(r);
 	rtnl_unlock();
 }
 
@@ -158,14 +164,20 @@
 	tcf_queue_work(&r->work);
 }
 
+static void __tcindex_destroy_fexts(struct tcindex_filter *f)
+{
+	tcf_exts_destroy(&f->result.exts);
+	tcf_exts_put_net(&f->result.exts);
+	kfree(f);
+}
+
 static void tcindex_destroy_fexts_work(struct work_struct *work)
 {
 	struct tcindex_filter *f = container_of(work, struct tcindex_filter,
 						work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->result.exts);
-	kfree(f);
+	__tcindex_destroy_fexts(f);
 	rtnl_unlock();
 }
 
@@ -210,10 +222,17 @@
 	 * grace period, since converted-to-rcu actions are relying on that
 	 * in cleanup() callback
 	 */
-	if (f)
-		call_rcu(&f->rcu, tcindex_destroy_fexts);
-	else
-		call_rcu(&r->rcu, tcindex_destroy_rexts);
+	if (f) {
+		if (tcf_exts_get_net(&f->result.exts))
+			call_rcu(&f->rcu, tcindex_destroy_fexts);
+		else
+			__tcindex_destroy_fexts(f);
+	} else {
+		if (tcf_exts_get_net(&r->exts))
+			call_rcu(&r->rcu, tcindex_destroy_rexts);
+		else
+			__tcindex_destroy_rexts(r);
+	}
 
 	*last = false;
 	return 0;
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index dadd1b3..b58eccb 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -399,6 +399,7 @@
 			   bool free_pf)
 {
 	tcf_exts_destroy(&n->exts);
+	tcf_exts_put_net(&n->exts);
 	if (n->ht_down)
 		n->ht_down->refcnt--;
 #ifdef CONFIG_CLS_U32_PERF
@@ -476,6 +477,7 @@
 				RCU_INIT_POINTER(*kp, key->next);
 
 				tcf_unbind_filter(tp, &key->res);
+				tcf_exts_get_net(&key->exts);
 				call_rcu(&key->rcu, u32_delete_key_freepf_rcu);
 				return 0;
 			}
@@ -588,7 +590,10 @@
 					 rtnl_dereference(n->next));
 			tcf_unbind_filter(tp, &n->res);
 			u32_remove_hw_knode(tp, n->handle);
-			call_rcu(&n->rcu, u32_delete_key_freepf_rcu);
+			if (tcf_exts_get_net(&n->exts))
+				call_rcu(&n->rcu, u32_delete_key_freepf_rcu);
+			else
+				u32_destroy_key(n->tp, n, true);
 		}
 	}
 }
@@ -949,6 +954,7 @@
 
 		u32_replace_knode(tp, tp_c, new);
 		tcf_unbind_filter(tp, &n->res);
+		tcf_exts_get_net(&n->exts);
 		call_rcu(&n->rcu, u32_delete_key_rcu);
 		return 0;
 	}
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 82d20ee..347ab31 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -266,8 +266,6 @@
 		goto lock;
 	}
 
-	daddr = (xfrm_address_t *)(skb_network_header(skb) +
-				   XFRM_SPI_SKB_CB(skb)->daddroff);
 	family = XFRM_SPI_SKB_CB(skb)->family;
 
 	/* if tunnel is present override skb->mark value with tunnel i_key */
@@ -294,6 +292,8 @@
 		goto drop;
 	}
 
+	daddr = (xfrm_address_t *)(skb_network_header(skb) +
+				   XFRM_SPI_SKB_CB(skb)->daddroff);
 	do {
 		if (skb->sp->len == XFRM_MAX_DEPTH) {
 			XFRM_INC_STATS(net, LINUX_MIB_XFRMINBUFFERERROR);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 8cafb3c..6eb228a 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1361,36 +1361,29 @@
 	struct net *net = xp_net(policy);
 	int nx;
 	int i, error;
-	xfrm_address_t *daddr = xfrm_flowi_daddr(fl, family);
-	xfrm_address_t *saddr = xfrm_flowi_saddr(fl, family);
 	xfrm_address_t tmp;
 
 	for (nx = 0, i = 0; i < policy->xfrm_nr; i++) {
 		struct xfrm_state *x;
-		xfrm_address_t *remote = daddr;
-		xfrm_address_t *local  = saddr;
+		xfrm_address_t *local;
+		xfrm_address_t *remote;
 		struct xfrm_tmpl *tmpl = &policy->xfrm_vec[i];
 
-		if (tmpl->mode == XFRM_MODE_TUNNEL ||
-		    tmpl->mode == XFRM_MODE_BEET) {
-			remote = &tmpl->id.daddr;
-			local = &tmpl->saddr;
-			if (xfrm_addr_any(local, tmpl->encap_family)) {
-				error = xfrm_get_saddr(net, fl->flowi_oif,
-						       &tmp, remote,
-						       tmpl->encap_family, 0);
-				if (error)
-					goto fail;
-				local = &tmp;
-			}
+		remote = &tmpl->id.daddr;
+		local = &tmpl->saddr;
+		if (xfrm_addr_any(local, tmpl->encap_family)) {
+			error = xfrm_get_saddr(net, fl->flowi_oif,
+					       &tmp, remote,
+					       tmpl->encap_family, 0);
+			if (error)
+				goto fail;
+			local = &tmp;
 		}
 
 		x = xfrm_state_find(remote, local, fl, tmpl, policy, &error, family);
 
 		if (x && x->km.state == XFRM_STATE_VALID) {
 			xfrm[nx++] = x;
-			daddr = remote;
-			saddr = local;
 			continue;
 		}
 		if (x) {
@@ -1787,19 +1780,23 @@
 	put_online_cpus();
 }
 
-static bool xfrm_pol_dead(struct xfrm_dst *xdst)
+static bool xfrm_xdst_can_reuse(struct xfrm_dst *xdst,
+				struct xfrm_state * const xfrm[],
+				int num)
 {
-	unsigned int num_pols = xdst->num_pols;
-	unsigned int pol_dead = 0, i;
+	const struct dst_entry *dst = &xdst->u.dst;
+	int i;
 
-	for (i = 0; i < num_pols; i++)
-		pol_dead |= xdst->pols[i]->walk.dead;
+	if (xdst->num_xfrms != num)
+		return false;
 
-	/* Mark DST_OBSOLETE_DEAD to fail the next xfrm_dst_check() */
-	if (pol_dead)
-		xdst->u.dst.obsolete = DST_OBSOLETE_DEAD;
+	for (i = 0; i < num; i++) {
+		if (!dst || dst->xfrm != xfrm[i])
+			return false;
+		dst = dst->child;
+	}
 
-	return pol_dead;
+	return xfrm_bundle_ok(xdst);
 }
 
 static struct xfrm_dst *
@@ -1813,19 +1810,6 @@
 	struct dst_entry *dst;
 	int err;
 
-	xdst = this_cpu_read(xfrm_last_dst);
-	if (xdst &&
-	    xdst->u.dst.dev == dst_orig->dev &&
-	    xdst->num_pols == num_pols &&
-	    !xfrm_pol_dead(xdst) &&
-	    memcmp(xdst->pols, pols,
-		   sizeof(struct xfrm_policy *) * num_pols) == 0 &&
-	    xfrm_bundle_ok(xdst)) {
-		dst_hold(&xdst->u.dst);
-		return xdst;
-	}
-
-	old = xdst;
 	/* Try to instantiate a bundle */
 	err = xfrm_tmpl_resolve(pols, num_pols, fl, xfrm, family);
 	if (err <= 0) {
@@ -1834,6 +1818,21 @@
 		return ERR_PTR(err);
 	}
 
+	xdst = this_cpu_read(xfrm_last_dst);
+	if (xdst &&
+	    xdst->u.dst.dev == dst_orig->dev &&
+	    xdst->num_pols == num_pols &&
+	    memcmp(xdst->pols, pols,
+		   sizeof(struct xfrm_policy *) * num_pols) == 0 &&
+	    xfrm_xdst_can_reuse(xdst, xfrm, err)) {
+		dst_hold(&xdst->u.dst);
+		while (err > 0)
+			xfrm_state_put(xfrm[--err]);
+		return xdst;
+	}
+
+	old = xdst;
+
 	dst = xfrm_bundle_create(pols[0], xfrm, err, fl, dst_orig);
 	if (IS_ERR(dst)) {
 		XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLEGENERROR);
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
new file mode 100755
index 0000000..2977371
--- /dev/null
+++ b/scripts/leaking_addresses.pl
@@ -0,0 +1,305 @@
+#!/usr/bin/env perl
+#
+# (c) 2017 Tobin C. Harding <me@tobin.cc>
+# Licensed under the terms of the GNU GPL License version 2
+#
+# leaking_addresses.pl: Scan 64 bit kernel for potential leaking addresses.
+#  - Scans dmesg output.
+#  - Walks directory tree and parses each file (for each directory in @DIRS).
+#
+# You can configure the behaviour of the script;
+#
+#  - By adding paths, for directories you do not want to walk;
+#     absolute paths: @skip_walk_dirs_abs
+#     directory names: @skip_walk_dirs_any
+#
+#  - By adding paths, for files you do not want to parse;
+#     absolute paths: @skip_parse_files_abs
+#     file names: @skip_parse_files_any
+#
+# The use of @skip_xxx_xxx_any causes files to be skipped where ever they occur.
+# For example adding 'fd' to @skip_walk_dirs_any causes the fd/ directory to be
+# skipped for all PID sub-directories of /proc
+#
+# The same thing can be achieved by passing command line options to --dont-walk
+# and --dont-parse. If absolute paths are supplied to these options they are
+# appended to the @skip_xxx_xxx_abs arrays. If file names are supplied to these
+# options, they are appended to the @skip_xxx_xxx_any arrays.
+#
+# Use --debug to output path before parsing, this is useful to find files that
+# cause the script to choke.
+#
+# You may like to set kptr_restrict=2 before running script
+# (see Documentation/sysctl/kernel.txt).
+
+use warnings;
+use strict;
+use POSIX;
+use File::Basename;
+use File::Spec;
+use Cwd 'abs_path';
+use Term::ANSIColor qw(:constants);
+use Getopt::Long qw(:config no_auto_abbrev);
+
+my $P = $0;
+my $V = '0.01';
+
+# Directories to scan.
+my @DIRS = ('/proc', '/sys');
+
+# Command line options.
+my $help = 0;
+my $debug = 0;
+my @dont_walk = ();
+my @dont_parse = ();
+
+# Do not parse these files (absolute path).
+my @skip_parse_files_abs = ('/proc/kmsg',
+			    '/proc/kcore',
+			    '/proc/fs/ext4/sdb1/mb_groups',
+			    '/proc/1/fd/3',
+			    '/sys/kernel/debug/tracing/trace_pipe',
+			    '/sys/kernel/security/apparmor/revision');
+
+# Do not parse thes files under any subdirectory.
+my @skip_parse_files_any = ('0',
+			    '1',
+			    '2',
+			    'pagemap',
+			    'events',
+			    'access',
+			    'registers',
+			    'snapshot_raw',
+			    'trace_pipe_raw',
+			    'ptmx',
+			    'trace_pipe');
+
+# Do not walk these directories (absolute path).
+my @skip_walk_dirs_abs = ();
+
+# Do not walk these directories under any subdirectory.
+my @skip_walk_dirs_any = ('self',
+			  'thread-self',
+			  'cwd',
+			  'fd',
+			  'stderr',
+			  'stdin',
+			  'stdout');
+
+sub help
+{
+	my ($exitcode) = @_;
+
+	print << "EOM";
+Usage: $P [OPTIONS]
+Version: $V
+
+Options:
+
+	--dont-walk=<dir>      Don't walk tree starting at <dir>.
+	--dont-parse=<file>    Don't parse <file>.
+	-d, --debug                Display debugging output.
+	-h, --help, --version      Display this help and exit.
+
+If an absolute path is passed to --dont_XXX then this path is skipped. If a
+single filename is passed then this file/directory will be skipped when
+appearing under any subdirectory.
+
+Example:
+
+	# Just scan dmesg output.
+	scripts/leaking_addresses.pl --dont_walk_abs /proc --dont_walk_abs /sys
+
+Scans the running (64 bit) kernel for potential leaking addresses.
+
+EOM
+	exit($exitcode);
+}
+
+GetOptions(
+	'dont-walk=s'		=> \@dont_walk,
+	'dont-parse=s'		=> \@dont_parse,
+	'd|debug'		=> \$debug,
+	'h|help'		=> \$help,
+	'version'		=> \$help
+) or help(1);
+
+help(0) if ($help);
+
+push_to_global();
+
+parse_dmesg();
+walk(@DIRS);
+
+exit 0;
+
+sub debug_arrays
+{
+	print 'dirs_any: ' . join(", ", @skip_walk_dirs_any) . "\n";
+	print 'dirs_abs: ' . join(", ", @skip_walk_dirs_abs) . "\n";
+	print 'parse_any: ' . join(", ", @skip_parse_files_any) . "\n";
+	print 'parse_abs: ' . join(", ", @skip_parse_files_abs) . "\n";
+}
+
+sub dprint
+{
+	printf(STDERR @_) if $debug;
+}
+
+sub push_in_abs_any
+{
+	my ($in, $abs, $any) = @_;
+
+	foreach my $path (@$in) {
+		if (File::Spec->file_name_is_absolute($path)) {
+			push @$abs, $path;
+		} elsif (index($path,'/') == -1) {
+			push @$any, $path;
+		} else {
+			print 'path error: ' . $path;
+		}
+	}
+}
+
+# Push command line options to global arrays.
+sub push_to_global
+{
+	push_in_abs_any(\@dont_walk, \@skip_walk_dirs_abs, \@skip_walk_dirs_any);
+	push_in_abs_any(\@dont_parse, \@skip_parse_files_abs, \@skip_parse_files_any);
+}
+
+sub is_false_positive
+{
+        my ($match) = @_;
+
+        if ($match =~ '\b(0x)?(f|F){16}\b' or
+            $match =~ '\b(0x)?0{16}\b') {
+                return 1;
+        }
+
+        # vsyscall memory region, we should probably check against a range here.
+        if ($match =~ '\bf{10}600000\b' or
+            $match =~ '\bf{10}601000\b') {
+                return 1;
+        }
+
+        return 0;
+}
+
+# True if argument potentially contains a kernel address.
+sub may_leak_address
+{
+        my ($line) = @_;
+        my $address = '\b(0x)?ffff[[:xdigit:]]{12}\b';
+
+        # Signal masks.
+        if ($line =~ '^SigBlk:' or
+            $line =~ '^SigCgt:') {
+                return 0;
+        }
+
+        if ($line =~ '\bKEY=[[:xdigit:]]{14} [[:xdigit:]]{16} [[:xdigit:]]{16}\b' or
+            $line =~ '\b[[:xdigit:]]{14} [[:xdigit:]]{16} [[:xdigit:]]{16}\b') {
+		return 0;
+        }
+
+        while (/($address)/g) {
+                if (!is_false_positive($1)) {
+                        return 1;
+                }
+        }
+
+        return 0;
+}
+
+sub parse_dmesg
+{
+	open my $cmd, '-|', 'dmesg';
+	while (<$cmd>) {
+		if (may_leak_address($_)) {
+			print 'dmesg: ' . $_;
+		}
+	}
+	close $cmd;
+}
+
+# True if we should skip this path.
+sub skip
+{
+	my ($path, $paths_abs, $paths_any) = @_;
+
+	foreach (@$paths_abs) {
+		return 1 if (/^$path$/);
+	}
+
+	my($filename, $dirs, $suffix) = fileparse($path);
+	foreach (@$paths_any) {
+		return 1 if (/^$filename$/);
+	}
+
+	return 0;
+}
+
+sub skip_parse
+{
+	my ($path) = @_;
+	return skip($path, \@skip_parse_files_abs, \@skip_parse_files_any);
+}
+
+sub parse_file
+{
+	my ($file) = @_;
+
+	if (! -R $file) {
+		return;
+	}
+
+	if (skip_parse($file)) {
+		dprint "skipping file: $file\n";
+		return;
+	}
+	dprint "parsing: $file\n";
+
+	open my $fh, "<", $file or return;
+	while ( <$fh> ) {
+		if (may_leak_address($_)) {
+			print $file . ': ' . $_;
+		}
+	}
+	close $fh;
+}
+
+
+# True if we should skip walking this directory.
+sub skip_walk
+{
+	my ($path) = @_;
+	return skip($path, \@skip_walk_dirs_abs, \@skip_walk_dirs_any)
+}
+
+# Recursively walk directory tree.
+sub walk
+{
+	my @dirs = @_;
+	my %seen;
+
+	while (my $pwd = shift @dirs) {
+		next if (skip_walk($pwd));
+		next if (!opendir(DIR, $pwd));
+		my @files = readdir(DIR);
+		closedir(DIR);
+
+		foreach my $file (@files) {
+			next if ($file eq '.' or $file eq '..');
+
+			my $path = "$pwd/$file";
+			next if (-l $path);
+
+			if (-d $path) {
+				push @dirs, $path;
+			} else {
+				parse_file($path);
+			}
+		}
+	}
+}
diff --git a/security/apparmor/ipc.c b/security/apparmor/ipc.c
index 66fb9ed..7ca0032 100644
--- a/security/apparmor/ipc.c
+++ b/security/apparmor/ipc.c
@@ -128,7 +128,7 @@
 		return SIGUNKNOWN;
 	else if (sig >= SIGRTMIN)
 		return sig - SIGRTMIN + 128;	/* rt sigs mapped to 128 */
-	else if (sig <= MAXMAPPED_SIG)
+	else if (sig < MAXMAPPED_SIG)
 		return sig_map[sig];
 	return SIGUNKNOWN;
 }
@@ -163,7 +163,7 @@
 			audit_signal_mask(ab, aad(sa)->denied);
 		}
 	}
-	if (aad(sa)->signal <= MAXMAPPED_SIG)
+	if (aad(sa)->signal < MAXMAPPED_SIG)
 		audit_log_format(ab, " signal=%s", sig_names[aad(sa)->signal]);
 	else
 		audit_log_format(ab, " signal=rtmin+%d",
diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c
index 1ac0c42..6e47b82 100644
--- a/sound/core/hrtimer.c
+++ b/sound/core/hrtimer.c
@@ -159,6 +159,7 @@
 	timer->hw = hrtimer_hw;
 	timer->hw.resolution = resolution;
 	timer->hw.ticks = NANO_SEC / resolution;
+	timer->max_instances = 100; /* lower the limit */
 
 	err = snd_timer_global_register(timer);
 	if (err < 0) {
diff --git a/sound/core/seq/oss/seq_oss_midi.c b/sound/core/seq/oss/seq_oss_midi.c
index aaff9ee..b30b213 100644
--- a/sound/core/seq/oss/seq_oss_midi.c
+++ b/sound/core/seq/oss/seq_oss_midi.c
@@ -612,9 +612,7 @@
 	if (!dp->timer->running)
 		len = snd_seq_oss_timer_start(dp->timer);
 	if (ev->type == SNDRV_SEQ_EVENT_SYSEX) {
-		if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
-			snd_seq_oss_readq_puts(dp->readq, mdev->seq_device,
-					       ev->data.ext.ptr, ev->data.ext.len);
+		snd_seq_oss_readq_sysex(dp->readq, mdev->seq_device, ev);
 	} else {
 		len = snd_midi_event_decode(mdev->coder, msg, sizeof(msg), ev);
 		if (len > 0)
diff --git a/sound/core/seq/oss/seq_oss_readq.c b/sound/core/seq/oss/seq_oss_readq.c
index 046cb586..06b2122 100644
--- a/sound/core/seq/oss/seq_oss_readq.c
+++ b/sound/core/seq/oss/seq_oss_readq.c
@@ -118,6 +118,35 @@
 }
 
 /*
+ * put MIDI sysex bytes; the event buffer may be chained, thus it has
+ * to be expanded via snd_seq_dump_var_event().
+ */
+struct readq_sysex_ctx {
+	struct seq_oss_readq *readq;
+	int dev;
+};
+
+static int readq_dump_sysex(void *ptr, void *buf, int count)
+{
+	struct readq_sysex_ctx *ctx = ptr;
+
+	return snd_seq_oss_readq_puts(ctx->readq, ctx->dev, buf, count);
+}
+
+int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
+			    struct snd_seq_event *ev)
+{
+	struct readq_sysex_ctx ctx = {
+		.readq = q,
+		.dev = dev
+	};
+
+	if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
+		return 0;
+	return snd_seq_dump_var_event(ev, readq_dump_sysex, &ctx);
+}
+
+/*
  * copy an event to input queue:
  * return zero if enqueued
  */
diff --git a/sound/core/seq/oss/seq_oss_readq.h b/sound/core/seq/oss/seq_oss_readq.h
index f1463f1..8d033ca 100644
--- a/sound/core/seq/oss/seq_oss_readq.h
+++ b/sound/core/seq/oss/seq_oss_readq.h
@@ -44,6 +44,8 @@
 void snd_seq_oss_readq_clear(struct seq_oss_readq *readq);
 unsigned int snd_seq_oss_readq_poll(struct seq_oss_readq *readq, struct file *file, poll_table *wait);
 int snd_seq_oss_readq_puts(struct seq_oss_readq *readq, int dev, unsigned char *data, int len);
+int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
+			    struct snd_seq_event *ev);
 int snd_seq_oss_readq_put_event(struct seq_oss_readq *readq, union evrec *ev);
 int snd_seq_oss_readq_put_timestamp(struct seq_oss_readq *readq, unsigned long curt, int seq_mode);
 int snd_seq_oss_readq_pick(struct seq_oss_readq *q, union evrec *rec);
diff --git a/sound/core/timer.c b/sound/core/timer.c
index 6cdd04a..15e82a6 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -180,7 +180,7 @@
  *
  * call this with register_mutex down.
  */
-static void snd_timer_check_slave(struct snd_timer_instance *slave)
+static int snd_timer_check_slave(struct snd_timer_instance *slave)
 {
 	struct snd_timer *timer;
 	struct snd_timer_instance *master;
@@ -190,16 +190,21 @@
 		list_for_each_entry(master, &timer->open_list_head, open_list) {
 			if (slave->slave_class == master->slave_class &&
 			    slave->slave_id == master->slave_id) {
+				if (master->timer->num_instances >=
+				    master->timer->max_instances)
+					return -EBUSY;
 				list_move_tail(&slave->open_list,
 					       &master->slave_list_head);
+				master->timer->num_instances++;
 				spin_lock_irq(&slave_active_lock);
 				slave->master = master;
 				slave->timer = master->timer;
 				spin_unlock_irq(&slave_active_lock);
-				return;
+				return 0;
 			}
 		}
 	}
+	return 0;
 }
 
 /*
@@ -208,7 +213,7 @@
  *
  * call this with register_mutex down.
  */
-static void snd_timer_check_master(struct snd_timer_instance *master)
+static int snd_timer_check_master(struct snd_timer_instance *master)
 {
 	struct snd_timer_instance *slave, *tmp;
 
@@ -216,7 +221,11 @@
 	list_for_each_entry_safe(slave, tmp, &snd_timer_slave_list, open_list) {
 		if (slave->slave_class == master->slave_class &&
 		    slave->slave_id == master->slave_id) {
+			if (master->timer->num_instances >=
+			    master->timer->max_instances)
+				return -EBUSY;
 			list_move_tail(&slave->open_list, &master->slave_list_head);
+			master->timer->num_instances++;
 			spin_lock_irq(&slave_active_lock);
 			spin_lock(&master->timer->lock);
 			slave->master = master;
@@ -228,8 +237,11 @@
 			spin_unlock_irq(&slave_active_lock);
 		}
 	}
+	return 0;
 }
 
+static int snd_timer_close_locked(struct snd_timer_instance *timeri);
+
 /*
  * open a timer instance
  * when opening a master, the slave id must be here given.
@@ -240,6 +252,7 @@
 {
 	struct snd_timer *timer;
 	struct snd_timer_instance *timeri = NULL;
+	int err;
 
 	if (tid->dev_class == SNDRV_TIMER_CLASS_SLAVE) {
 		/* open a slave instance */
@@ -259,10 +272,14 @@
 		timeri->slave_id = tid->device;
 		timeri->flags |= SNDRV_TIMER_IFLG_SLAVE;
 		list_add_tail(&timeri->open_list, &snd_timer_slave_list);
-		snd_timer_check_slave(timeri);
+		err = snd_timer_check_slave(timeri);
+		if (err < 0) {
+			snd_timer_close_locked(timeri);
+			timeri = NULL;
+		}
 		mutex_unlock(&register_mutex);
 		*ti = timeri;
-		return 0;
+		return err;
 	}
 
 	/* open a master instance */
@@ -288,6 +305,10 @@
 			return -EBUSY;
 		}
 	}
+	if (timer->num_instances >= timer->max_instances) {
+		mutex_unlock(&register_mutex);
+		return -EBUSY;
+	}
 	timeri = snd_timer_instance_new(owner, timer);
 	if (!timeri) {
 		mutex_unlock(&register_mutex);
@@ -314,25 +335,27 @@
 	}
 
 	list_add_tail(&timeri->open_list, &timer->open_list_head);
-	snd_timer_check_master(timeri);
+	timer->num_instances++;
+	err = snd_timer_check_master(timeri);
+	if (err < 0) {
+		snd_timer_close_locked(timeri);
+		timeri = NULL;
+	}
 	mutex_unlock(&register_mutex);
 	*ti = timeri;
-	return 0;
+	return err;
 }
 EXPORT_SYMBOL(snd_timer_open);
 
 /*
  * close a timer instance
+ * call this with register_mutex down.
  */
-int snd_timer_close(struct snd_timer_instance *timeri)
+static int snd_timer_close_locked(struct snd_timer_instance *timeri)
 {
 	struct snd_timer *timer = NULL;
 	struct snd_timer_instance *slave, *tmp;
 
-	if (snd_BUG_ON(!timeri))
-		return -ENXIO;
-
-	mutex_lock(&register_mutex);
 	list_del(&timeri->open_list);
 
 	/* force to stop the timer */
@@ -340,6 +363,7 @@
 
 	timer = timeri->timer;
 	if (timer) {
+		timer->num_instances--;
 		/* wait, until the active callback is finished */
 		spin_lock_irq(&timer->lock);
 		while (timeri->flags & SNDRV_TIMER_IFLG_CALLBACK) {
@@ -355,6 +379,7 @@
 		list_for_each_entry_safe(slave, tmp, &timeri->slave_list_head,
 					 open_list) {
 			list_move_tail(&slave->open_list, &snd_timer_slave_list);
+			timer->num_instances--;
 			slave->master = NULL;
 			slave->timer = NULL;
 			list_del_init(&slave->ack_list);
@@ -382,9 +407,24 @@
 		module_put(timer->module);
 	}
 
-	mutex_unlock(&register_mutex);
 	return 0;
 }
+
+/*
+ * close a timer instance
+ */
+int snd_timer_close(struct snd_timer_instance *timeri)
+{
+	int err;
+
+	if (snd_BUG_ON(!timeri))
+		return -ENXIO;
+
+	mutex_lock(&register_mutex);
+	err = snd_timer_close_locked(timeri);
+	mutex_unlock(&register_mutex);
+	return err;
+}
 EXPORT_SYMBOL(snd_timer_close);
 
 unsigned long snd_timer_resolution(struct snd_timer_instance *timeri)
@@ -856,6 +896,7 @@
 	spin_lock_init(&timer->lock);
 	tasklet_init(&timer->task_queue, snd_timer_tasklet,
 		     (unsigned long)timer);
+	timer->max_instances = 1000; /* default limit per timer */
 	if (card != NULL) {
 		timer->module = card->module;
 		err = snd_device_new(card, SNDRV_DEV_TIMER, timer, &ops);
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 546d515..dce0682 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6544,6 +6544,11 @@
 		{0x14, 0x90170110},
 		{0x1b, 0x90a70130},
 		{0x21, 0x03211020}),
+	SND_HDA_PIN_QUIRK(0x10ec0274, 0x1028, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE,
+		{0x12, 0xb7a60130},
+		{0x13, 0xb8a61140},
+		{0x16, 0x90170110},
+		{0x21, 0x04211020}),
 	SND_HDA_PIN_QUIRK(0x10ec0280, 0x103c, "HP", ALC280_FIXUP_HP_GPIO4,
 		{0x12, 0x90a60130},
 		{0x14, 0x90170110},
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 4f5f18f..2062432 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1375,6 +1375,7 @@
 			case 0x199:
 				return SNDRV_PCM_FMTBIT_DSD_U32_LE;
 			case 0x19b:
+			case 0x203:
 				return SNDRV_PCM_FMTBIT_DSD_U32_BE;
 			default:
 				break;