kernel/patch-5.16-redhat.patch

 Makefile                                           |   4 +
 arch/arm/Kconfig                                   |   4 +-
 arch/arm64/Kconfig                                 |   3 +-
 arch/s390/include/asm/ipl.h                        |   1 +
 arch/s390/kernel/ipl.c                             |   5 +
 arch/s390/kernel/setup.c                           |   4 +
 arch/x86/kernel/resource.c                         |  23 +++-
 arch/x86/kernel/setup.c                            |  22 ++--
 crypto/rng.c                                       |  73 +++++++++++-
 drivers/acpi/apei/hest.c                           |   8 ++
 drivers/acpi/irq.c                                 |  17 ++-
 drivers/acpi/scan.c                                |   9 ++
 drivers/ata/libahci.c                              |  18 +++
 drivers/char/ipmi/ipmi_dmi.c                       |  15 +++
 drivers/char/ipmi/ipmi_msghandler.c                |  16 ++-
 drivers/char/random.c                              | 115 +++++++++++++++++++
 drivers/firmware/efi/Makefile                      |   1 +
 drivers/firmware/efi/efi.c                         | 124 +++++++++++++++------
 drivers/firmware/efi/secureboot.c                  |  38 +++++++
 drivers/hid/hid-rmi.c                              |  64 -----------
 drivers/hwtracing/coresight/coresight-etm4x-core.c |  19 ++++
 drivers/input/rmi4/rmi_driver.c                    | 124 ++++++++++++---------
 drivers/iommu/iommu.c                              |  22 ++++
 drivers/net/wireless/ath/ath11k/core.c             |  53 +++++++++
 drivers/net/wireless/ath/ath11k/core.h             |   1 +
 drivers/net/wireless/ath/ath11k/mhi.c              |   1 +
 drivers/net/wireless/ath/ath11k/pci.c              |  16 ++-
 drivers/nvme/host/core.c                           |  22 +++-
 drivers/nvme/host/multipath.c                      |  19 ++--
 drivers/nvme/host/nvme.h                           |   4 +
 drivers/pci/quirks.c                               |  24 ++++
 drivers/usb/core/hub.c                             |   7 ++
 include/linux/efi.h                                |  22 ++--
 include/linux/lsm_hook_defs.h                      |   2 +
 include/linux/lsm_hooks.h                          |   6 +
 include/linux/random.h                             |   7 ++
 include/linux/rmi.h                                |   1 +
 include/linux/security.h                           |   5 +
 include/net/netfilter/nf_conntrack.h               |   1 +
 kernel/module_signing.c                            |   9 +-
 net/netfilter/nf_conntrack_core.c                  |   3 +
 net/netfilter/nf_nat_core.c                        |  43 ++++++-
 scripts/tags.sh                                    |   2 +
 security/integrity/platform_certs/load_uefi.c      |   6 +-
 security/lockdown/Kconfig                          |  13 +++
 security/lockdown/lockdown.c                       |   1 +
 security/security.c                                |   6 +
 tools/testing/selftests/netfilter/nft_nat.sh       |   5 +-
 48 files changed, 815 insertions(+), 193 deletions(-)

diff --git a/Makefile b/Makefile
index 2f0e5c3d9e2a..d71b7646e438 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,10 @@ $(if $(filter __%, $(MAKECMDGOALS)), \
 PHONY := __all
 __all:

+# Set RHEL variables
+# Use this spot to avoid future merge conflicts
+include Makefile.rhelver
+
 # We are using a recursive build, so we need to do a little thinking
 # to get the ordering right.
 #
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c2724d986fa0..8063dcef65f7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1479,9 +1479,9 @@ config HIGHMEM
 	  If unsure, say n.

 config HIGHPTE
-	bool "Allocate 2nd-level pagetables from highmem" if EXPERT
+	bool "Allocate 2nd-level pagetables from highmem"
 	depends on HIGHMEM
-	default y
+	default n
 	help
 	  The VM uses one page of physical memory for each page table.
 	  For systems with a lot of processes, this can use a lot of
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c4207cf9bb17..9e440657f15e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1023,7 +1023,7 @@ endchoice

 config ARM64_FORCE_52BIT
 	bool "Force 52-bit virtual addresses for userspace"
-	depends on ARM64_VA_BITS_52 && EXPERT
+	depends on ARM64_VA_BITS_52
 	help
 	  For systems with 52-bit userspace VAs enabled, the kernel will attempt
 	  to maintain compatibility with older software by providing 48-bit VAs
@@ -1277,6 +1277,7 @@ config XEN
 config FORCE_MAX_ZONEORDER
 	int
 	default "14" if ARM64_64K_PAGES
+	default "13" if (ARCH_THUNDER && !ARM64_64K_PAGES)
 	default "12" if ARM64_16K_PAGES
 	default "11"
 	help
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index 3f8ee257f9aa..3ab92feb6241 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -128,6 +128,7 @@ int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf,
 			     unsigned char flags, unsigned short cert);
 int ipl_report_add_certificate(struct ipl_report *report, void *key,
 			       unsigned long addr, unsigned long len);
+bool ipl_get_secureboot(void);

 /*
  * DIAG 308 support
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 5ad1dde23dc5..b6192d58eed3 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2216,3 +2216,8 @@ int ipl_report_free(struct ipl_report *report)
 }

 #endif
+
+bool ipl_get_secureboot(void)
+{
+	return !!ipl_secure_flag;
+}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 225ab2d0a4c6..6a06cde25ca2 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -49,6 +49,7 @@
 #include <linux/memory.h>
 #include <linux/compat.h>
 #include <linux/start_kernel.h>
+#include <linux/security.h>
 #include <linux/hugetlb.h>
 #include <linux/kmemleak.h>

@@ -963,6 +964,9 @@ void __init setup_arch(char **cmdline_p)

 	log_component_list();

+	if (ipl_get_secureboot())
+		security_lock_kernel_down("Secure IPL mode", LOCKDOWN_INTEGRITY_MAX);
+
 	/* Have one command line that is parsed and saved in /proc/cmdline */
 	/* boot_command_line has been already set up in early.c */
 	*cmdline_p = boot_command_line;
diff --git a/arch/x86/kernel/resource.c b/arch/x86/kernel/resource.c
index 9b9fb7882c20..9ae64f9af956 100644
--- a/arch/x86/kernel/resource.c
+++ b/arch/x86/kernel/resource.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <linux/dmi.h>
 #include <linux/ioport.h>
 #include <asm/e820/api.h>

@@ -23,11 +24,31 @@ static void resource_clip(struct resource *res, resource_size_t start,
 		res->start = end + 1;
 }

+/*
+ * Some BIOS-es contain a bug where they add addresses which map to
+ * system RAM in the PCI host bridge window returned by the ACPI _CRS
+ * method, see commit 4dc2287c1805 ("x86: avoid E820 regions when
+ * allocating address space"). To avoid this Linux by default excludes
+ * E820 reservations when allocating addresses since 2010.
+ * In 2019 some systems have shown-up with E820 reservations which cover
+ * the entire _CRS returned PCI host bridge window, causing all attempts
+ * to assign memory to PCI BARs to fail if Linux uses E820 reservations.
+ *
+ * Ideally Linux would fully stop using E820 reservations, but then
+ * the old systems this was added for will regress.
+ * Instead keep the old behavior for old systems, while ignoring the
+ * E820 reservations for any systems from now on.
+ */
 static void remove_e820_regions(struct resource *avail)
 {
-	int i;
+	int i, year = dmi_get_bios_year();
 	struct e820_entry *entry;

+	if (year >= 2018)
+		return;
+
+	pr_info_once("PCI: Removing E820 reservations from host bridge windows\n");
+
 	for (i = 0; i < e820_table->nr_entries; i++) {
 		entry = &e820_table->entries[i];

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index e04f5e6eb33f..8015e3d2dc9a 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -20,6 +20,7 @@
 #include <linux/root_dev.h>
 #include <linux/hugetlb.h>
 #include <linux/tboot.h>
+#include <linux/security.h>
 #include <linux/usb/xhci-dbgp.h>
 #include <linux/static_call.h>
 #include <linux/swiotlb.h>
@@ -929,6 +930,13 @@ void __init setup_arch(char **cmdline_p)
 	if (efi_enabled(EFI_BOOT))
 		efi_init();

+	efi_set_secure_boot(boot_params.secure_boot);
+
+#ifdef CONFIG_LOCK_DOWN_IN_EFI_SECURE_BOOT
+	if (efi_enabled(EFI_SECURE_BOOT))
+		security_lock_kernel_down("EFI Secure Boot mode", LOCKDOWN_INTEGRITY_MAX);
+#endif
+
 	dmi_setup();

 	/*
@@ -1094,19 +1102,7 @@ void __init setup_arch(char **cmdline_p)
 	/* Allocate bigger log buffer */
 	setup_log_buf(1);

-	if (efi_enabled(EFI_BOOT)) {
-		switch (boot_params.secure_boot) {
-		case efi_secureboot_mode_disabled:
-			pr_info("Secure boot disabled\n");
-			break;
-		case efi_secureboot_mode_enabled:
-			pr_info("Secure boot enabled\n");
-			break;
-		default:
-			pr_info("Secure boot could not be determined\n");
-			break;
-		}
-	}
+	efi_set_secure_boot(boot_params.secure_boot);

 	reserve_initrd();

diff --git a/crypto/rng.c b/crypto/rng.c
index fea082b25fe4..50a9d040bed1 100644
--- a/crypto/rng.c
+++ b/crypto/rng.c
@@ -11,14 +11,17 @@
 #include <linux/atomic.h>
 #include <crypto/internal/rng.h>
 #include <linux/err.h>
+#include <linux/fips.h>
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/random.h>
 #include <linux/seq_file.h>
+#include <linux/sched.h>
+#include <linux/sched/signal.h>
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/cryptouser.h>
-#include <linux/compiler.h>
 #include <net/netlink.h>

 #include "internal.h"
@@ -224,5 +227,73 @@ void crypto_unregister_rngs(struct rng_alg *algs, int count)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_rngs);

+static ssize_t crypto_devrandom_read(void __user *buf, size_t buflen)
+{
+	u8 tmp[256];
+	ssize_t ret;
+
+	if (!buflen)
+		return 0;
+
+	ret = crypto_get_default_rng();
+	if (ret)
+		return ret;
+
+	for (;;) {
+		int err;
+		int i;
+
+		i = min_t(int, buflen, sizeof(tmp));
+		err = crypto_rng_get_bytes(crypto_default_rng, tmp, i);
+		if (err) {
+			ret = err;
+			break;
+		}
+
+		if (copy_to_user(buf, tmp, i)) {
+			ret = -EFAULT;
+			break;
+		}
+
+		buflen -= i;
+		buf += i;
+		ret += i;
+
+		if (!buflen)
+			break;
+
+		if (need_resched()) {
+			if (signal_pending(current))
+				break;
+			schedule();
+		}
+	}
+
+	crypto_put_default_rng();
+	memzero_explicit(tmp, sizeof(tmp));
+
+	return ret;
+}
+
+static const struct random_extrng crypto_devrandom_rng = {
+	.extrng_read = crypto_devrandom_read,
+	.owner = THIS_MODULE,
+};
+
+static int __init crypto_rng_init(void)
+{
+	if (fips_enabled)
+		random_register_extrng(&crypto_devrandom_rng);
+	return 0;
+}
+
+static void __exit crypto_rng_exit(void)
+{
+	random_unregister_extrng();
+}
+
+late_initcall(crypto_rng_init);
+module_exit(crypto_rng_exit);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Random Number Generator");
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
index 0edc1ed47673..782e2f399af2 100644
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c
@@ -96,6 +96,14 @@ static int apei_hest_parse(apei_hest_func_t func, void *data)
 	if (hest_disable || !hest_tab)
 		return -EINVAL;

+#ifdef CONFIG_ARM64
+	/* Ignore broken firmware */
+	if (!strncmp(hest_tab->header.oem_id, "HPE   ", 6) &&
+	    !strncmp(hest_tab->header.oem_table_id, "ProLiant", 8) &&
+	    MIDR_IMPLEMENTOR(read_cpuid_id()) == ARM_CPU_IMP_APM)
+		return -EINVAL;
+#endif
+
 	hest_hdr = (struct acpi_hest_header *)(hest_tab + 1);
 	for (i = 0; i < hest_tab->error_source_count; i++) {
 		len = hest_esrc_len(hest_hdr);
diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c
index c68e694fca26..146cba5ae5bc 100644
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -130,6 +130,7 @@ struct acpi_irq_parse_one_ctx {
 	unsigned int index;
 	unsigned long *res_flags;
 	struct irq_fwspec *fwspec;
+	bool skip_producer_check;
 };

 /**
@@ -201,7 +202,8 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares,
 		return AE_CTRL_TERMINATE;
 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 		eirq = &ares->data.extended_irq;
-		if (eirq->producer_consumer == ACPI_PRODUCER)
+		if (!ctx->skip_producer_check &&
+		    eirq->producer_consumer == ACPI_PRODUCER)
 			return AE_OK;
 		if (ctx->index >= eirq->interrupt_count) {
 			ctx->index -= eirq->interrupt_count;
@@ -236,8 +238,19 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares,
 static int acpi_irq_parse_one(acpi_handle handle, unsigned int index,
 			      struct irq_fwspec *fwspec, unsigned long *flags)
 {
-	struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec };
+	struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec, false };

+	/*
+	 * Firmware on arm64-based HPE m400 platform incorrectly marks
+	 * its UART interrupt as ACPI_PRODUCER rather than ACPI_CONSUMER.
+	 * Don't do the producer/consumer check for that device.
+	 */
+	if (IS_ENABLED(CONFIG_ARM64)) {
+		struct acpi_device *adev = acpi_bus_get_acpi_device(handle);
+
+		if (adev && !strcmp(acpi_device_hid(adev), "APMC0D08"))
+			ctx.skip_producer_check = true;
+	}
 	acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_irq_parse_one_cb, &ctx);
 	return ctx.rc;
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 25d9f04f1995..c2fa1e98fb28 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1732,6 +1732,15 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	if (!acpi_match_device_ids(device, ignore_serial_bus_ids))
 		return false;

+	/*
+	 * Firmware on some arm64 X-Gene platforms will make the UART
+	 * device appear as both a UART and a slave of that UART. Just
+	 * bail out here for X-Gene UARTs.
+	 */
+	if (IS_ENABLED(CONFIG_ARM64) &&
+	    !strcmp(acpi_device_hid(device), "APMC0D08"))
+		return false;
+
 	INIT_LIST_HEAD(&resource_list);
 	acpi_dev_get_resources(device, &resource_list,
 			       acpi_check_serial_bus_slave,
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index f76b8418e6fb..350e52fccc30 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -690,6 +690,24 @@ int ahci_stop_engine(struct ata_port *ap)
 	tmp &= ~PORT_CMD_START;
 	writel(tmp, port_mmio + PORT_CMD);

+#ifdef CONFIG_ARM64
+	/* Rev Ax of Cavium CN99XX needs a hack for port stop */
+	if (dev_is_pci(ap->host->dev) &&
+	    to_pci_dev(ap->host->dev)->vendor == 0x14e4 &&
+	    to_pci_dev(ap->host->dev)->device == 0x9027 &&
+	    midr_is_cpu_model_range(read_cpuid_id(),
+			MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN),
+			MIDR_CPU_VAR_REV(0, 0),
+			MIDR_CPU_VAR_REV(0, MIDR_REVISION_MASK))) {
+		tmp = readl(hpriv->mmio + 0x8000);
+		udelay(100);
+		writel(tmp | (1 << 26), hpriv->mmio + 0x8000);
+		udelay(100);
+		writel(tmp & ~(1 << 26), hpriv->mmio + 0x8000);
+		dev_warn(ap->host->dev, "CN99XX SATA reset workaround applied\n");
+	}
+#endif
+
 	/* wait for engine to stop. This could be as long as 500 msec */
 	tmp = ata_wait_register(ap, port_mmio + PORT_CMD,
 				PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
diff --git a/drivers/char/ipmi/ipmi_dmi.c b/drivers/char/ipmi/ipmi_dmi.c
index bbf7029e224b..cf7faa970dd6 100644
--- a/drivers/char/ipmi/ipmi_dmi.c
+++ b/drivers/char/ipmi/ipmi_dmi.c
@@ -215,6 +215,21 @@ static int __init scan_for_dmi_ipmi(void)
 {
 	const struct dmi_device *dev = NULL;

+#ifdef CONFIG_ARM64
+	/* RHEL-only
+	 * If this is ARM-based HPE m400, return now, because that platform
+	 * reports the host-side ipmi address as intel port-io space, which
+	 * does not exist in the ARM architecture.
+	 */
+	const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+	if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) {
+		pr_debug("%s does not support host ipmi\n", dmistr);
+		return 0;
+	}
+	/* END RHEL-only */
+#endif
+
 	while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev)))
 		dmi_decode_ipmi((const struct dmi_header *) dev->device_data);

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index c59265146e9c..caa8458edde2 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -35,6 +35,7 @@
 #include <linux/uuid.h>
 #include <linux/nospec.h>
 #include <linux/vmalloc.h>
+#include <linux/dmi.h>
 #include <linux/delay.h>

 #define IPMI_DRIVER_VERSION "39.2"
@@ -5422,8 +5423,21 @@ static int __init ipmi_init_msghandler_mod(void)
 {
 	int rv;

-	pr_info("version " IPMI_DRIVER_VERSION "\n");
+#ifdef CONFIG_ARM64
+	/* RHEL-only
+	 * If this is ARM-based HPE m400, return now, because that platform
+	 * reports the host-side ipmi address as intel port-io space, which
+	 * does not exist in the ARM architecture.
+	 */
+	const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME);

+	if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) {
+		pr_debug("%s does not support host ipmi\n", dmistr);
+		return -ENOSYS;
+	}
+	/* END RHEL-only */
+#endif
+	pr_info("version " IPMI_DRIVER_VERSION "\n");
 	mutex_lock(&ipmi_interfaces_mutex);
 	rv = ipmi_register_driver();
 	mutex_unlock(&ipmi_interfaces_mutex);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index a27ae3999ff3..dc4e136adb08 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -335,6 +335,7 @@
 #include <linux/syscalls.h>
 #include <linux/completion.h>
 #include <linux/uuid.h>
+#include <linux/rcupdate.h>
 #include <crypto/chacha.h>
 #include <crypto/sha1.h>

@@ -349,6 +350,11 @@

 /* #define ADD_INTERRUPT_BENCH */

+/*
+ * Hook for external RNG.
+ */
+static const struct random_extrng __rcu *extrng;
+
 /*
  * Configuration information
  */
@@ -482,6 +488,9 @@ static int ratelimit_disable __read_mostly;
 module_param_named(ratelimit_disable, ratelimit_disable, int, 0644);
 MODULE_PARM_DESC(ratelimit_disable, "Disable random ratelimit suppression");

+static const struct file_operations extrng_random_fops;
+static const struct file_operations extrng_urandom_fops;
+
 /**********************************************************************
  *
  * OS independent entropy store.   Here are the functions which handle
@@ -1880,6 +1889,13 @@ random_poll(struct file *file, poll_table * wait)
 	return mask;
 }

+static __poll_t
+extrng_poll(struct file *file, poll_table * wait)
+{
+	/* extrng pool is always full, always read, no writes */
+	return EPOLLIN | EPOLLRDNORM;
+}
+
 static int
 write_pool(struct entropy_store *r, const char __user *buffer, size_t count)
 {
@@ -1983,7 +1999,58 @@ static int random_fasync(int fd, struct file *filp, int on)
 	return fasync_helper(fd, filp, on, &fasync);
 }

+static int random_open(struct inode *inode, struct file *filp)
+{
+	const struct random_extrng *rng;
+
+	rcu_read_lock();
+	rng = rcu_dereference(extrng);
+	if (rng && !try_module_get(rng->owner))
+		rng = NULL;
+	rcu_read_unlock();
+
+	if (!rng)
+		return 0;
+
+	filp->f_op = &extrng_random_fops;
+	filp->private_data = rng->owner;
+
+	return 0;
+}
+
+static int urandom_open(struct inode *inode, struct file *filp)
+{
+	const struct random_extrng *rng;
+
+	rcu_read_lock();
+	rng = rcu_dereference(extrng);
+	if (rng && !try_module_get(rng->owner))
+		rng = NULL;
+	rcu_read_unlock();
+
+	if (!rng)
+		return 0;
+
+	filp->f_op = &extrng_urandom_fops;
+	filp->private_data = rng->owner;
+
+	return 0;
+}
+
+static int extrng_release(struct inode *inode, struct file *filp)
+{
+	module_put(filp->private_data);
+	return 0;
+}
+
+static ssize_t
+extrng_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
+{
+	return rcu_dereference_raw(extrng)->extrng_read(buf, nbytes);
+}
+
 const struct file_operations random_fops = {
+	.open  = random_open,
 	.read  = random_read,
 	.write = random_write,
 	.poll  = random_poll,
@@ -1994,6 +2061,7 @@ const struct file_operations random_fops = {
 };

 const struct file_operations urandom_fops = {
+	.open  = urandom_open,
 	.read  = urandom_read,
 	.write = random_write,
 	.unlocked_ioctl = random_ioctl,
@@ -2002,9 +2070,31 @@ const struct file_operations urandom_fops = {
 	.llseek = noop_llseek,
 };

+static const struct file_operations extrng_random_fops = {
+	.open  = random_open,
+	.read  = extrng_read,
+	.write = random_write,
+	.poll  = extrng_poll,
+	.unlocked_ioctl = random_ioctl,
+	.fasync = random_fasync,
+	.llseek = noop_llseek,
+	.release = extrng_release,
+};
+
+static const struct file_operations extrng_urandom_fops = {
+	.open  = urandom_open,
+	.read  = extrng_read,
+	.write = random_write,
+	.unlocked_ioctl = random_ioctl,
+	.fasync = random_fasync,
+	.llseek = noop_llseek,
+	.release = extrng_release,
+};
+
 SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count,
 		unsigned int, flags)
 {
+	const struct random_extrng *rng;
 	int ret;

 	if (flags & ~(GRND_NONBLOCK|GRND_RANDOM|GRND_INSECURE))
@@ -2020,6 +2110,18 @@ SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count,
 	if (count > INT_MAX)
 		count = INT_MAX;

+	rcu_read_lock();
+	rng = rcu_dereference(extrng);
+	if (rng && !try_module_get(rng->owner))
+		rng = NULL;
+	rcu_read_unlock();
+
+	if (rng) {
+		ret = rng->extrng_read(buf, count);
+		module_put(rng->owner);
+		return ret;
+	}
+
 	if (!(flags & GRND_INSECURE) && !crng_ready()) {
 		if (flags & GRND_NONBLOCK)
 			return -EAGAIN;
@@ -2329,3 +2431,16 @@ void add_bootloader_randomness(const void *buf, unsigned int size)
 		add_device_randomness(buf, size);
 }
 EXPORT_SYMBOL_GPL(add_bootloader_randomness);
+
+void random_register_extrng(const struct random_extrng *rng)
+{
+	rcu_assign_pointer(extrng, rng);
+}
+EXPORT_SYMBOL_GPL(random_register_extrng);
+
+void random_unregister_extrng(void)
+{
+	RCU_INIT_POINTER(extrng, NULL);
+	synchronize_rcu();
+}
+EXPORT_SYMBOL_GPL(random_unregister_extrng);
diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index c02ff25dd477..d860f8eb9a81 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_EFI_FAKE_MEMMAP)		+= fake_map.o
 obj-$(CONFIG_EFI_BOOTLOADER_CONTROL)	+= efibc.o
 obj-$(CONFIG_EFI_TEST)			+= test/
 obj-$(CONFIG_EFI_DEV_PATH_PARSER)	+= dev-path-parser.o
+obj-$(CONFIG_EFI)			+= secureboot.o
 obj-$(CONFIG_APPLE_PROPERTIES)		+= apple-properties.o
 obj-$(CONFIG_EFI_RCI2_TABLE)		+= rci2-table.o
 obj-$(CONFIG_EFI_EMBEDDED_FIRMWARE)	+= embedded-firmware.o
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 7de3f5b6e8d0..95b1c35b347c 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -31,6 +31,7 @@
 #include <linux/ucs2_string.h>
 #include <linux/memblock.h>
 #include <linux/security.h>
+#include <linux/bsearch.h>

 #include <asm/early_ioremap.h>

@@ -851,40 +852,101 @@ int efi_mem_type(unsigned long phys_addr)
 }
 #endif

+struct efi_error_code {
+	efi_status_t status;
+	int errno;
+	const char *description;
+};
+
+static const struct efi_error_code efi_error_codes[] = {
+	{ EFI_SUCCESS, 0, "Success"},
+#if 0
+	{ EFI_LOAD_ERROR, -EPICK_AN_ERRNO, "Load Error"},
+#endif
+	{ EFI_INVALID_PARAMETER, -EINVAL, "Invalid Parameter"},
+	{ EFI_UNSUPPORTED, -ENOSYS, "Unsupported"},
+	{ EFI_BAD_BUFFER_SIZE, -ENOSPC, "Bad Buffer Size"},
+	{ EFI_BUFFER_TOO_SMALL, -ENOSPC, "Buffer Too Small"},
+	{ EFI_NOT_READY, -EAGAIN, "Not Ready"},
+	{ EFI_DEVICE_ERROR, -EIO, "Device Error"},
+	{ EFI_WRITE_PROTECTED, -EROFS, "Write Protected"},
+	{ EFI_OUT_OF_RESOURCES, -ENOMEM, "Out of Resources"},
+#if 0
+	{ EFI_VOLUME_CORRUPTED, -EPICK_AN_ERRNO, "Volume Corrupt"},
+	{ EFI_VOLUME_FULL, -EPICK_AN_ERRNO, "Volume Full"},
+	{ EFI_NO_MEDIA, -EPICK_AN_ERRNO, "No Media"},
+	{ EFI_MEDIA_CHANGED, -EPICK_AN_ERRNO, "Media changed"},
+#endif
+	{ EFI_NOT_FOUND, -ENOENT, "Not Found"},
+#if 0
+	{ EFI_ACCESS_DENIED, -EPICK_AN_ERRNO, "Access Denied"},
+	{ EFI_NO_RESPONSE, -EPICK_AN_ERRNO, "No Response"},
+	{ EFI_NO_MAPPING, -EPICK_AN_ERRNO, "No mapping"},
+	{ EFI_TIMEOUT, -EPICK_AN_ERRNO, "Time out"},
+	{ EFI_NOT_STARTED, -EPICK_AN_ERRNO, "Not started"},
+	{ EFI_ALREADY_STARTED, -EPICK_AN_ERRNO, "Already started"},
+#endif
+	{ EFI_ABORTED, -EINTR, "Aborted"},
+#if 0
+	{ EFI_ICMP_ERROR, -EPICK_AN_ERRNO, "ICMP Error"},
+	{ EFI_TFTP_ERROR, -EPICK_AN_ERRNO, "TFTP Error"},
+	{ EFI_PROTOCOL_ERROR, -EPICK_AN_ERRNO, "Protocol Error"},
+	{ EFI_INCOMPATIBLE_VERSION, -EPICK_AN_ERRNO, "Incompatible Version"},
+#endif
+	{ EFI_SECURITY_VIOLATION, -EACCES, "Security Policy Violation"},
+#if 0
+	{ EFI_CRC_ERROR, -EPICK_AN_ERRNO, "CRC Error"},
+	{ EFI_END_OF_MEDIA, -EPICK_AN_ERRNO, "End of Media"},
+	{ EFI_END_OF_FILE, -EPICK_AN_ERRNO, "End of File"},
+	{ EFI_INVALID_LANGUAGE, -EPICK_AN_ERRNO, "Invalid Languages"},
+	{ EFI_COMPROMISED_DATA, -EPICK_AN_ERRNO, "Compromised Data"},
+
+	// warnings
+	{ EFI_WARN_UNKOWN_GLYPH, -EPICK_AN_ERRNO, "Warning Unknown Glyph"},
+	{ EFI_WARN_DELETE_FAILURE, -EPICK_AN_ERRNO, "Warning Delete Failure"},
+	{ EFI_WARN_WRITE_FAILURE, -EPICK_AN_ERRNO, "Warning Write Failure"},
+	{ EFI_WARN_BUFFER_TOO_SMALL, -EPICK_AN_ERRNO, "Warning Buffer Too Small"},
+#endif
+};
+
+static int
+efi_status_cmp_bsearch(const void *key, const void *item)
+{
+	u64 status = (u64)(uintptr_t)key;
+	struct efi_error_code *code = (struct efi_error_code *)item;
+
+	if (status < code->status)
+		return -1;
+	if (status > code->status)
+		return 1;
+	return 0;
+}
+
 int efi_status_to_err(efi_status_t status)
 {
-	int err;
-
-	switch (status) {
-	case EFI_SUCCESS:
-		err = 0;
-		break;
-	case EFI_INVALID_PARAMETER:
-		err = -EINVAL;
-		break;
-	case EFI_OUT_OF_RESOURCES:
-		err = -ENOSPC;
-		break;
-	case EFI_DEVICE_ERROR:
-		err = -EIO;
-		break;
-	case EFI_WRITE_PROTECTED:
-		err = -EROFS;
-		break;
-	case EFI_SECURITY_VIOLATION:
-		err = -EACCES;
-		break;
-	case EFI_NOT_FOUND:
-		err = -ENOENT;
-		break;
-	case EFI_ABORTED:
-		err = -EINTR;
-		break;
-	default:
-		err = -EINVAL;
-	}
+	struct efi_error_code *found;
+	size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code);

-	return err;
+	found = bsearch((void *)(uintptr_t)status, efi_error_codes,
+			sizeof(struct efi_error_code), num,
+			efi_status_cmp_bsearch);
+	if (!found)
+		return -EINVAL;
+	return found->errno;
+}
+
+const char *
+efi_status_to_str(efi_status_t status)
+{
+	struct efi_error_code *found;
+	size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code);
+
+	found = bsearch((void *)(uintptr_t)status, efi_error_codes,
+			sizeof(struct efi_error_code), num,
+			efi_status_cmp_bsearch);
+	if (!found)
+		return "Unknown error code";
+	return found->description;
 }

 static DEFINE_SPINLOCK(efi_mem_reserve_persistent_lock);
diff --git a/drivers/firmware/efi/secureboot.c b/drivers/firmware/efi/secureboot.c
new file mode 100644
index 000000000000..de0a3714a5d4
--- /dev/null
+++ b/drivers/firmware/efi/secureboot.c
@@ -0,0 +1,38 @@
+/* Core kernel secure boot support.
+ *
+ * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/efi.h>
+#include <linux/kernel.h>
+#include <linux/printk.h>
+
+/*
+ * Decide what to do when UEFI secure boot mode is enabled.
+ */
+void __init efi_set_secure_boot(enum efi_secureboot_mode mode)
+{
+	if (efi_enabled(EFI_BOOT)) {
+		switch (mode) {
+		case efi_secureboot_mode_disabled:
+			pr_info("Secure boot disabled\n");
+			break;
+		case efi_secureboot_mode_enabled:
+			set_bit(EFI_SECURE_BOOT, &efi.flags);
+			pr_info("Secure boot enabled\n");
+			break;
+		default:
+			pr_warn("Secure boot could not be determined (mode %u)\n",
+				   mode);
+			break;
+		}
+	}
+}
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 311eee599ce9..2460c6bd46f8 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -322,19 +322,12 @@ static int rmi_input_event(struct hid_device *hdev, u8 *data, int size)
 {
 	struct rmi_data *hdata = hid_get_drvdata(hdev);
 	struct rmi_device *rmi_dev = hdata->xport.rmi_dev;
-	unsigned long flags;

 	if (!(test_bit(RMI_STARTED, &hdata->flags)))
 		return 0;

-	local_irq_save(flags);
-
 	rmi_set_attn_data(rmi_dev, data[1], &data[2], size - 2);

-	generic_handle_irq(hdata->rmi_irq);
-
-	local_irq_restore(flags);
-
 	return 1;
 }

@@ -591,56 +584,6 @@ static const struct rmi_transport_ops hid_rmi_ops = {
 	.reset		= rmi_hid_reset,
 };

-static void rmi_irq_teardown(void *data)
-{
-	struct rmi_data *hdata = data;
-	struct irq_domain *domain = hdata->domain;
-
-	if (!domain)
-		return;
-
-	irq_dispose_mapping(irq_find_mapping(domain, 0));
-
-	irq_domain_remove(domain);
-	hdata->domain = NULL;
-	hdata->rmi_irq = 0;
-}
-
-static int rmi_irq_map(struct irq_domain *h, unsigned int virq,
-		       irq_hw_number_t hw_irq_num)
-{
-	irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq);
-
-	return 0;
-}
-
-static const struct irq_domain_ops rmi_irq_ops = {
-	.map = rmi_irq_map,
-};
-
-static int rmi_setup_irq_domain(struct hid_device *hdev)
-{
-	struct rmi_data *hdata = hid_get_drvdata(hdev);
-	int ret;
-
-	hdata->domain = irq_domain_create_linear(hdev->dev.fwnode, 1,
-						 &rmi_irq_ops, hdata);
-	if (!hdata->domain)
-		return -ENOMEM;
-
-	ret = devm_add_action_or_reset(&hdev->dev, &rmi_irq_teardown, hdata);
-	if (ret)
-		return ret;
-
-	hdata->rmi_irq = irq_create_mapping(hdata->domain, 0);
-	if (hdata->rmi_irq <= 0) {
-		hid_err(hdev, "Can't allocate an IRQ\n");
-		return hdata->rmi_irq < 0 ? hdata->rmi_irq : -ENXIO;
-	}
-
-	return 0;
-}
-
 static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
 {
 	struct rmi_data *data = NULL;
@@ -713,18 +656,11 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)

 	mutex_init(&data->page_mutex);

-	ret = rmi_setup_irq_domain(hdev);
-	if (ret) {
-		hid_err(hdev, "failed to allocate IRQ domain\n");
-		return ret;
-	}
-
 	if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)
 		rmi_hid_pdata.gpio_data.disable = true;

 	data->xport.dev = hdev->dev.parent;
 	data->xport.pdata = rmi_hid_pdata;
-	data->xport.pdata.irq = data->rmi_irq;
 	data->xport.proto_name = "hid";
 	data->xport.ops = &hid_rmi_ops;

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 86a313857b58..dcfc95d0e328 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -9,6 +9,7 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/device.h>
+#include <linux/dmi.h>
 #include <linux/io.h>
 #include <linux/err.h>
 #include <linux/fs.h>
@@ -2156,6 +2157,16 @@ static const struct amba_id etm4_ids[] = {
 	{},
 };

+static const struct dmi_system_id broken_coresight[] = {
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HPE"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Apollo 70"),
+		},
+	},
+	{ }	/* terminating entry */
+};
+
 MODULE_DEVICE_TABLE(amba, etm4_ids);

 static struct amba_driver etm4x_amba_driver = {
@@ -2189,6 +2200,11 @@ static int __init etm4x_init(void)
 {
 	int ret;

+	if (dmi_check_system(broken_coresight)) {
+		pr_info("ETM4 disabled due to firmware bug\n");
+		return 0;
+	}
+
 	ret = etm4_pm_setup();

 	/* etm4_pm_setup() does its own cleanup - exit on error */
@@ -2215,6 +2231,9 @@ static int __init etm4x_init(void)

 static void __exit etm4x_exit(void)
 {
+	if (dmi_check_system(broken_coresight))
+		return;
+
 	amba_driver_unregister(&etm4x_amba_driver);
 	platform_driver_unregister(&etm4_platform_driver);
 	etm4_pm_clear();
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 258d5fe3d395..f7298e3dc8f3 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -182,34 +182,47 @@ void rmi_set_attn_data(struct rmi_device *rmi_dev, unsigned long irq_status,
 	attn_data.data = fifo_data;

 	kfifo_put(&drvdata->attn_fifo, attn_data);
+
+	schedule_work(&drvdata->attn_work);
 }
 EXPORT_SYMBOL_GPL(rmi_set_attn_data);

-static irqreturn_t rmi_irq_fn(int irq, void *dev_id)
+static void attn_callback(struct work_struct *work)
 {
-	struct rmi_device *rmi_dev = dev_id;
-	struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
+	struct rmi_driver_data *drvdata = container_of(work,
+							struct rmi_driver_data,
+							attn_work);
 	struct rmi4_attn_data attn_data = {0};
 	int ret, count;

 	count = kfifo_get(&drvdata->attn_fifo, &attn_data);
-	if (count) {
-		*(drvdata->irq_status) = attn_data.irq_status;
-		drvdata->attn_data = attn_data;
-	}
+	if (!count)
+		return;

-	ret = rmi_process_interrupt_requests(rmi_dev);
+	*(drvdata->irq_status) = attn_data.irq_status;
+	drvdata->attn_data = attn_data;
+
+	ret = rmi_process_interrupt_requests(drvdata->rmi_dev);
 	if (ret)
-		rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev,
+		rmi_dbg(RMI_DEBUG_CORE, &drvdata->rmi_dev->dev,
 			"Failed to process interrupt request: %d\n", ret);

-	if (count) {
-		kfree(attn_data.data);
-		drvdata->attn_data.data = NULL;
-	}
+	kfree(attn_data.data);
+	drvdata->attn_data.data = NULL;

 	if (!kfifo_is_empty(&drvdata->attn_fifo))
-		return rmi_irq_fn(irq, dev_id);
+		schedule_work(&drvdata->attn_work);
+}
+
+static irqreturn_t rmi_irq_fn(int irq, void *dev_id)
+{
+	struct rmi_device *rmi_dev = dev_id;
+	int ret;
+
+	ret = rmi_process_interrupt_requests(rmi_dev);
+	if (ret)
+		rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev,
+			"Failed to process interrupt request: %d\n", ret);

 	return IRQ_HANDLED;
 }
@@ -217,7 +230,6 @@ static irqreturn_t rmi_irq_fn(int irq, void *dev_id)
 static int rmi_irq_init(struct rmi_device *rmi_dev)
 {
 	struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev);
-	struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev);
 	int irq_flags = irq_get_trigger_type(pdata->irq);
 	int ret;

@@ -235,8 +247,6 @@ static int rmi_irq_init(struct rmi_device *rmi_dev)
 		return ret;
 	}

-	data->enabled = true;
-
 	return 0;
 }

@@ -886,23 +896,27 @@ void rmi_enable_irq(struct rmi_device *rmi_dev, bool clear_wake)
 	if (data->enabled)
 		goto out;

-	enable_irq(irq);
-	data->enabled = true;
-	if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) {
-		retval = disable_irq_wake(irq);
-		if (retval)
-			dev_warn(&rmi_dev->dev,
-				 "Failed to disable irq for wake: %d\n",
-				 retval);
-	}
+	if (irq) {
+		enable_irq(irq);
+		data->enabled = true;
+		if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) {
+			retval = disable_irq_wake(irq);
+			if (retval)
+				dev_warn(&rmi_dev->dev,
+					 "Failed to disable irq for wake: %d\n",
+					 retval);
+		}

-	/*
-	 * Call rmi_process_interrupt_requests() after enabling irq,
-	 * otherwise we may lose interrupt on edge-triggered systems.
-	 */
-	irq_flags = irq_get_trigger_type(pdata->irq);
-	if (irq_flags & IRQ_TYPE_EDGE_BOTH)
-		rmi_process_interrupt_requests(rmi_dev);
+		/*
+		 * Call rmi_process_interrupt_requests() after enabling irq,
+		 * otherwise we may lose interrupt on edge-triggered systems.
+		 */
+		irq_flags = irq_get_trigger_type(pdata->irq);
+		if (irq_flags & IRQ_TYPE_EDGE_BOTH)
+			rmi_process_interrupt_requests(rmi_dev);
+	} else {
+		data->enabled = true;
+	}

 out:
 	mutex_unlock(&data->enabled_mutex);
@@ -922,20 +936,22 @@ void rmi_disable_irq(struct rmi_device *rmi_dev, bool enable_wake)
 		goto out;

 	data->enabled = false;
-	disable_irq(irq);
-	if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) {
-		retval = enable_irq_wake(irq);
-		if (retval)
-			dev_warn(&rmi_dev->dev,
-				 "Failed to enable irq for wake: %d\n",
-				 retval);
-	}
-
-	/* make sure the fifo is clean */
-	while (!kfifo_is_empty(&data->attn_fifo)) {
-		count = kfifo_get(&data->attn_fifo, &attn_data);
-		if (count)
-			kfree(attn_data.data);
+	if (irq) {
+		disable_irq(irq);
+		if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) {
+			retval = enable_irq_wake(irq);
+			if (retval)
+				dev_warn(&rmi_dev->dev,
+					 "Failed to enable irq for wake: %d\n",
+					 retval);
+		}
+	} else {
+		/* make sure the fifo is clean */
+		while (!kfifo_is_empty(&data->attn_fifo)) {
+			count = kfifo_get(&data->attn_fifo, &attn_data);
+			if (count)
+				kfree(attn_data.data);
+		}
 	}

 out:
@@ -981,6 +997,8 @@ static int rmi_driver_remove(struct device *dev)
 	irq_domain_remove(data->irqdomain);
 	data->irqdomain = NULL;

+	cancel_work_sync(&data->attn_work);
+
 	rmi_f34_remove_sysfs(rmi_dev);
 	rmi_free_function_list(rmi_dev);

@@ -1219,9 +1237,15 @@ static int rmi_driver_probe(struct device *dev)
 		}
 	}

-	retval = rmi_irq_init(rmi_dev);
-	if (retval < 0)
-		goto err_destroy_functions;
+	if (pdata->irq) {
+		retval = rmi_irq_init(rmi_dev);
+		if (retval < 0)
+			goto err_destroy_functions;
+	}
+
+	data->enabled = true;
+
+	INIT_WORK(&data->attn_work, attn_callback);

 	if (data->f01_container->dev.driver) {
 		/* Driver already bound, so enable ATTN now. */
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 8b86406b7162..2dffe129b902 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -7,6 +7,7 @@
 #define pr_fmt(fmt)    "iommu: " fmt

 #include <linux/device.h>
+#include <linux/dmi.h>
 #include <linux/dma-iommu.h>
 #include <linux/kernel.h>
 #include <linux/bits.h>
@@ -3119,6 +3120,27 @@ u32 iommu_sva_get_pasid(struct iommu_sva *handle)
 }
 EXPORT_SYMBOL_GPL(iommu_sva_get_pasid);

+#ifdef CONFIG_ARM64
+static int __init iommu_quirks(void)
+{
+	const char *vendor, *name;
+
+	vendor = dmi_get_system_info(DMI_SYS_VENDOR);
+	name = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+	if (vendor &&
+	    (strncmp(vendor, "GIGABYTE", 8) == 0 && name &&
+	     (strncmp(name, "R120", 4) == 0 ||
+	      strncmp(name, "R270", 4) == 0))) {
+		pr_warn("Gigabyte %s detected, force iommu passthrough mode", name);
+		iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY;
+	}
+
+	return 0;
+}
+arch_initcall(iommu_quirks);
+#endif
+
 /*
  * Changes the default domain of an iommu group that has *only* one device
  *
diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index cb8cacbbd5b4..246147e03c09 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -291,6 +291,59 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.alloc_cacheable_memory = false,
 		.wakeup_mhi = true,
 	},
+	{
+		.name = "wcn6855 hw2.1",
+		.hw_rev = ATH11K_HW_WCN6855_HW21,
+		.fw = {
+			.dir = "WCN6855/hw2.1",
+			.board_size = 256 * 1024,
+			.cal_offset = 128 * 1024,
+		},
+		.max_radios = 3,
+		.bdf_addr = 0x4B0C0000,
+		.hw_ops = &wcn6855_ops,
+		.ring_mask = &ath11k_hw_ring_mask_qca6390,
+		.internal_sleep_clock = true,
+		.regs = &wcn6855_regs,
+		.qmi_service_ins_id = ATH11K_QMI_WLFW_SERVICE_INS_ID_V01_QCA6390,
+		.host_ce_config = ath11k_host_ce_config_qca6390,
+		.ce_count = 9,
+		.target_ce_config = ath11k_target_ce_config_wlan_qca6390,
+		.target_ce_count = 9,
+		.svc_to_ce_map = ath11k_target_service_to_ce_map_wlan_qca6390,
+		.svc_to_ce_map_len = 14,
+		.single_pdev_only = true,
+		.rxdma1_enable = false,
+		.num_rxmda_per_pdev = 2,
+		.rx_mac_buf_ring = true,
+		.vdev_start_delay = true,
+		.htt_peer_map_v2 = false,
+
+		.spectral = {
+			.fft_sz = 0,
+			.fft_pad_sz = 0,
+			.summary_pad_sz = 0,
+			.fft_hdr_len = 0,
+			.max_fft_bins = 0,
+		},
+
+		.interface_modes = BIT(NL80211_IFTYPE_STATION) |
+					BIT(NL80211_IFTYPE_AP),
+		.supports_monitor = false,
+		.supports_shadow_regs = true,
+		.idle_ps = true,
+		.supports_sta_ps = true,
+		.cold_boot_calib = false,
+		.supports_suspend = true,
+		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
+		.fix_l1ss = false,
+		.credit_flow = true,
+		.max_tx_ring = DP_TCL_NUM_RING_MAX_QCA6390,
+		.hal_params = &ath11k_hw_hal_params_qca6390,
+		.supports_dynamic_smps_6ghz = false,
+		.alloc_cacheable_memory = false,
+		.wakeup_mhi = true,
+	},
 };

 int ath11k_core_suspend(struct ath11k_base *ab)
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 011373b91ae0..3d6519612422 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -117,6 +117,7 @@ enum ath11k_hw_rev {
 	ATH11K_HW_IPQ6018_HW10,
 	ATH11K_HW_QCN9074_HW10,
 	ATH11K_HW_WCN6855_HW20,
+	ATH11K_HW_WCN6855_HW21,
 };

 enum ath11k_firmware_mode {
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 49c0b1ad40a0..95f5a1960676 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -356,6 +356,7 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci)
 		break;
 	case ATH11K_HW_QCA6390_HW20:
 	case ATH11K_HW_WCN6855_HW20:
+	case ATH11K_HW_WCN6855_HW21:
 		ath11k_mhi_config = &ath11k_mhi_config_qca6390;
 		break;
 	default:
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 4c348bacf2cb..9fe496d35b38 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -25,7 +25,7 @@
 #define WINDOW_RANGE_MASK		GENMASK(18, 0)

 #define TCSR_SOC_HW_VERSION		0x0224
-#define TCSR_SOC_HW_VERSION_MAJOR_MASK	GENMASK(16, 8)
+#define TCSR_SOC_HW_VERSION_MAJOR_MASK	GENMASK(11, 8)
 #define TCSR_SOC_HW_VERSION_MINOR_MASK	GENMASK(7, 0)

 /* BAR0 + 4k is always accessible, and no
@@ -1297,9 +1297,21 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 					   &soc_hw_version_minor);
 		switch (soc_hw_version_major) {
 		case 2:
-			ab->hw_rev = ATH11K_HW_WCN6855_HW20;
+			switch (soc_hw_version_minor) {
+			case 0x00:
+			case 0x01:
+				ab->hw_rev = ATH11K_HW_WCN6855_HW20;
+				break;
+			case 0x10:
+			case 0x11:
+				ab->hw_rev = ATH11K_HW_WCN6855_HW21;
+				break;
+			default:
+				goto unsupported_wcn6855_soc;
+			}
 			break;
 		default:
+unsupported_wcn6855_soc:
 			dev_err(&pdev->dev, "Unsupported WCN6855 SOC hardware version: %d %d\n",
 				soc_hw_version_major, soc_hw_version_minor);
 			ret = -EOPNOTSUPP;
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1af8a4513708..5a23e077ab86 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -244,6 +244,9 @@ static void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)

 static blk_status_t nvme_error_status(u16 status)
 {
+	if (unlikely(status & NVME_SC_DNR))
+		return BLK_STS_TARGET;
+
 	switch (status & 0x7ff) {
 	case NVME_SC_SUCCESS:
 		return BLK_STS_OK;
@@ -303,6 +306,7 @@ enum nvme_disposition {
 	COMPLETE,
 	RETRY,
 	FAILOVER,
+	FAILUP,
 };

 static inline enum nvme_disposition nvme_decide_disposition(struct request *req)
@@ -310,15 +314,16 @@ static inline enum nvme_disposition nvme_decide_disposition(struct request *req)
 	if (likely(nvme_req(req)->status == 0))
 		return COMPLETE;

-	if (blk_noretry_request(req) ||
+	if ((req->cmd_flags & (REQ_FAILFAST_DEV | REQ_FAILFAST_DRIVER)) ||
 	    (nvme_req(req)->status & NVME_SC_DNR) ||
 	    nvme_req(req)->retries >= nvme_max_retries)
 		return COMPLETE;

-	if (req->cmd_flags & REQ_NVME_MPATH) {
+	if (req->cmd_flags & (REQ_NVME_MPATH | REQ_FAILFAST_TRANSPORT)) {
 		if (nvme_is_path_error(nvme_req(req)->status) ||
 		    blk_queue_dying(req->q))
-			return FAILOVER;
+			return (req->cmd_flags & REQ_NVME_MPATH) ?
+				FAILOVER : FAILUP;
 	} else {
 		if (blk_queue_dying(req->q))
 			return COMPLETE;
@@ -344,6 +349,14 @@ static inline void nvme_end_req(struct request *req)
 	blk_mq_end_request(req, status);
 }

+static inline void nvme_failup_req(struct request *req)
+{
+	nvme_update_ana(req);
+
+	nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR;
+	nvme_end_req(req);
+}
+
 void nvme_complete_rq(struct request *req)
 {
 	trace_nvme_complete_rq(req);
@@ -362,6 +375,9 @@ void nvme_complete_rq(struct request *req)
 	case FAILOVER:
 		nvme_failover_req(req);
 		return;
+	case FAILUP:
+		nvme_failup_req(req);
+		return;
 	}
 }
 EXPORT_SYMBOL_GPL(nvme_complete_rq);
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 13e5d503ed07..daaeb316f624 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -65,14 +65,10 @@ bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags)
 	return true;
 }

-void nvme_failover_req(struct request *req)
+void nvme_update_ana(struct request *req)
 {
 	struct nvme_ns *ns = req->q->queuedata;
 	u16 status = nvme_req(req)->status & 0x7ff;
-	unsigned long flags;
-	struct bio *bio;
-
-	nvme_mpath_clear_current_path(ns);

 	/*
 	 * If we got back an ANA error, we know the controller is alive but not
@@ -83,6 +79,16 @@ void nvme_failover_req(struct request *req)
 		set_bit(NVME_NS_ANA_PENDING, &ns->flags);
 		queue_work(nvme_wq, &ns->ctrl->ana_work);
 	}
+}
+
+void nvme_failover_req(struct request *req)
+{
+	struct nvme_ns *ns = req->q->queuedata;
+	unsigned long flags;
+	struct bio *bio;
+
+	nvme_mpath_clear_current_path(ns);
+	nvme_update_ana(req);

 	spin_lock_irqsave(&ns->head->requeue_lock, flags);
 	for (bio = req->bio; bio; bio = bio->bi_next) {
@@ -838,8 +844,7 @@ int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
 	int error = 0;

 	/* check if multipath is enabled and we have the capability */
-	if (!multipath || !ctrl->subsys ||
-	    !(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA))
+	if (!ctrl->subsys || !(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA))
 		return 0;

 	if (!ctrl->max_namespaces ||
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 9b095ee01364..bf25ef206cd2 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -765,6 +765,7 @@ void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys);
 void nvme_mpath_start_freeze(struct nvme_subsystem *subsys);
 bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags);
 void nvme_failover_req(struct request *req);
+void nvme_update_ana(struct request *req);
 void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl);
 int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head);
 void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id);
@@ -803,6 +804,9 @@ static inline bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name,
 static inline void nvme_failover_req(struct request *req)
 {
 }
+static inline void nvme_update_ana(struct request *req)
+{
+}
 static inline void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl)
 {
 }
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 20a932690738..494cee3aec7b 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4272,6 +4272,30 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000,
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084,
 				quirk_bridge_cavm_thrx2_pcie_root);

+/*
+ * PCI BAR 5 is not setup correctly for the on-board AHCI controller
+ * on Broadcom's Vulcan processor. Added a quirk to fix BAR 5 by
+ * using BAR 4's resources which are populated correctly and NOT
+ * actually used by the AHCI controller.
+ */
+static void quirk_fix_vulcan_ahci_bars(struct pci_dev *dev)
+{
+	struct resource *r =  &dev->resource[4];
+
+	if (!(r->flags & IORESOURCE_MEM) || (r->start == 0))
+		return;
+
+	/* Set BAR5 resource to BAR4 */
+	dev->resource[5] = *r;
+
+	/* Update BAR5 in pci config space */
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_5, r->start);
+
+	/* Clear BAR4's resource */
+	memset(r, 0, sizeof(*r));
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9027, quirk_fix_vulcan_ahci_bars);
+
 /*
  * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero)
  * class code.  Fix it.
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index ac6c5ccfe1cb..ec784479eece 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -5669,6 +5669,13 @@ static void hub_event(struct work_struct *work)
 			(u16) hub->change_bits[0],
 			(u16) hub->event_bits[0]);

+	/* Don't disconnect USB-SATA on TrimSlice */
+	if (strcmp(dev_name(hdev->bus->controller), "tegra-ehci.0") == 0) {
+		if ((hdev->state == 7) && (hub->change_bits[0] == 0) &&
+				(hub->event_bits[0] == 0x2))
+			hub->event_bits[0] = 0;
+	}
+
 	/* Lock the device, then check to see if we were
 	 * disconnected while waiting for the lock to succeed. */
 	usb_lock_device(hdev);
diff --git a/include/linux/efi.h b/include/linux/efi.h
index ef8dbc0a1522..836a5dfc6156 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -43,6 +43,8 @@
 #define EFI_ABORTED		(21 | (1UL << (BITS_PER_LONG-1)))
 #define EFI_SECURITY_VIOLATION	(26 | (1UL << (BITS_PER_LONG-1)))

+#define EFI_IS_ERROR(x)		((x) & (1UL << (BITS_PER_LONG-1)))
+
 typedef unsigned long efi_status_t;
 typedef u8 efi_bool_t;
 typedef u16 efi_char16_t;		/* UNICODE character */
@@ -783,6 +785,14 @@ extern int __init efi_setup_pcdp_console(char *);
 #define EFI_MEM_ATTR		10	/* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
 #define EFI_MEM_NO_SOFT_RESERVE	11	/* Is the kernel configured to ignore soft reservations? */
 #define EFI_PRESERVE_BS_REGIONS	12	/* Are EFI boot-services memory segments available? */
+#define EFI_SECURE_BOOT		13	/* Are we in Secure Boot mode? */
+
+enum efi_secureboot_mode {
+	efi_secureboot_mode_unset,
+	efi_secureboot_mode_unknown,
+	efi_secureboot_mode_disabled,
+	efi_secureboot_mode_enabled,
+};

 #ifdef CONFIG_EFI
 /*
@@ -794,6 +804,8 @@ static inline bool efi_enabled(int feature)
 }
 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);

+extern void __init efi_set_secure_boot(enum efi_secureboot_mode mode);
+
 bool __pure __efi_soft_reserve_enabled(void);

 static inline bool __pure efi_soft_reserve_enabled(void)
@@ -814,6 +826,8 @@ static inline bool efi_enabled(int feature)
 static inline void
 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}

+static inline void efi_set_secure_boot(enum efi_secureboot_mode mode) {}
+
 static inline bool efi_soft_reserve_enabled(void)
 {
 	return false;
@@ -826,6 +840,7 @@ static inline bool efi_rt_services_supported(unsigned int mask)
 #endif

 extern int efi_status_to_err(efi_status_t status);
+extern const char *efi_status_to_str(efi_status_t status);

 /*
  * Variable Attributes
@@ -1078,13 +1093,6 @@ static inline bool efi_runtime_disabled(void) { return true; }
 extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
 extern unsigned long efi_call_virt_save_flags(void);

-enum efi_secureboot_mode {
-	efi_secureboot_mode_unset,
-	efi_secureboot_mode_unknown,
-	efi_secureboot_mode_disabled,
-	efi_secureboot_mode_enabled,
-};
-
 static inline
 enum efi_secureboot_mode efi_get_secureboot_mode(efi_get_variable_t *get_var)
 {
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index f0c7b352340a..bea09711d8d7 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -395,6 +395,8 @@ LSM_HOOK(void, LSM_RET_VOID, bpf_prog_free_security, struct bpf_prog_aux *aux)
 #endif /* CONFIG_BPF_SYSCALL */

 LSM_HOOK(int, 0, locked_down, enum lockdown_reason what)
+LSM_HOOK(int, 0, lock_kernel_down, const char *where, enum lockdown_reason level)
+

 #ifdef CONFIG_PERF_EVENTS
 LSM_HOOK(int, 0, perf_event_open, struct perf_event_attr *attr, int type)
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index d45b6f6e27fd..70622b506461 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1548,6 +1548,12 @@
  *
  *     @what: kernel feature being accessed
  *
+ * @lock_kernel_down
+ * 	Put the kernel into lock-down mode.
+ *
+ * 	@where: Where the lock-down is originating from (e.g. command line option)
+ * 	@level: The lock-down level (can only increase)
+ *
  * Security hooks for perf events
  *
  * @perf_event_open:
diff --git a/include/linux/random.h b/include/linux/random.h
index f45b8be3e3c4..7ccdec68b789 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -14,6 +14,11 @@

 #include <uapi/linux/random.h>

+struct random_extrng {
+	ssize_t (*extrng_read)(void __user *buf, size_t buflen);
+	struct module *owner;
+};
+
 struct random_ready_callback {
 	struct list_head list;
 	void (*func)(struct random_ready_callback *rdy);
@@ -44,6 +49,8 @@ extern bool rng_is_initialized(void);
 extern int add_random_ready_callback(struct random_ready_callback *rdy);
 extern void del_random_ready_callback(struct random_ready_callback *rdy);
 extern int __must_check get_random_bytes_arch(void *buf, int nbytes);
+void random_register_extrng(const struct random_extrng *rng);
+void random_unregister_extrng(void);

 #ifndef MODULE
 extern const struct file_operations random_fops, urandom_fops;
diff --git a/include/linux/rmi.h b/include/linux/rmi.h
index ab7eea01ab42..fff7c5f737fc 100644
--- a/include/linux/rmi.h
+++ b/include/linux/rmi.h
@@ -364,6 +364,7 @@ struct rmi_driver_data {

 	struct rmi4_attn_data attn_data;
 	DECLARE_KFIFO(attn_fifo, struct rmi4_attn_data, 16);
+	struct work_struct attn_work;
 };

 int rmi_register_transport_device(struct rmi_transport_dev *xport);
diff --git a/include/linux/security.h b/include/linux/security.h
index bbf44a466832..026a06b98a96 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -473,6 +473,7 @@ int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
 int security_locked_down(enum lockdown_reason what);
+int security_lock_kernel_down(const char *where, enum lockdown_reason level);
 #else /* CONFIG_SECURITY */

 static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data)
@@ -1355,6 +1356,10 @@ static inline int security_locked_down(enum lockdown_reason what)
 {
 	return 0;
 }
+static inline int security_lock_kernel_down(const char *where, enum lockdown_reason level)
+{
+	return 0;
+}
 #endif	/* CONFIG_SECURITY */

 #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE)
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index d24b0a34c8f0..871489df63c6 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -95,6 +95,7 @@ struct nf_conn {
 	unsigned long status;

 	u16		cpu;
+	u16		local_origin:1;
 	possible_net_t ct_net;

 #if IS_ENABLED(CONFIG_NF_NAT)
diff --git a/kernel/module_signing.c b/kernel/module_signing.c
index 8723ae70ea1f..fb2d773498c2 100644
--- a/kernel/module_signing.c
+++ b/kernel/module_signing.c
@@ -38,8 +38,15 @@ int mod_verify_sig(const void *mod, struct load_info *info)
 	modlen -= sig_len + sizeof(ms);
 	info->len = modlen;

-	return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
+	ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
 				      VERIFY_USE_SECONDARY_KEYRING,
 				      VERIFYING_MODULE_SIGNATURE,
 				      NULL, NULL);
+	if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
+		ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len,
+				VERIFY_USE_PLATFORM_KEYRING,
+				VERIFYING_MODULE_SIGNATURE,
+				NULL, NULL);
+	}
+	return ret;
 }
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 7f7997460764..c42478d48f7d 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1749,6 +1749,9 @@ resolve_normal_ct(struct nf_conn *tmpl,
 			return 0;
 		if (IS_ERR(h))
 			return PTR_ERR(h);
+
+		ct = nf_ct_tuplehash_to_ctrack(h);
+		ct->local_origin = state->hook == NF_INET_LOCAL_OUT;
 	}
 	ct = nf_ct_tuplehash_to_ctrack(h);

diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index 4d50d51db796..29d26bc977dc 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -494,6 +494,38 @@ static void nf_nat_l4proto_unique_tuple(struct nf_conntrack_tuple *tuple,
 	goto another_round;
 }

+static bool tuple_force_port_remap(const struct nf_conntrack_tuple *tuple)
+{
+	u16 sp, dp;
+
+	switch (tuple->dst.protonum) {
+	case IPPROTO_TCP:
+		sp = ntohs(tuple->src.u.tcp.port);
+		dp = ntohs(tuple->dst.u.tcp.port);
+		break;
+	case IPPROTO_UDP:
+	case IPPROTO_UDPLITE:
+		sp = ntohs(tuple->src.u.udp.port);
+		dp = ntohs(tuple->dst.u.udp.port);
+		break;
+	default:
+		return false;
+	}
+
+	/* IANA: System port range: 1-1023,
+	 *         user port range: 1024-49151,
+	 *      private port range: 49152-65535.
+	 *
+	 * Linux default ephemeral port range is 32768-60999.
+	 *
+	 * Enforce port remapping if sport is significantly lower
+	 * than dport to prevent NAT port shadowing, i.e.
+	 * accidental match of 'new' inbound connection vs.
+	 * existing outbound one.
+	 */
+	return sp < 16384 && dp >= 32768;
+}
+
 /* Manipulate the tuple into the range given. For NF_INET_POST_ROUTING,
  * we change the source to map into the range. For NF_INET_PRE_ROUTING
  * and NF_INET_LOCAL_OUT, we change the destination to map into the
@@ -507,11 +539,17 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
 		 struct nf_conn *ct,
 		 enum nf_nat_manip_type maniptype)
 {
+	bool random_port = range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL;
 	const struct nf_conntrack_zone *zone;
 	struct net *net = nf_ct_net(ct);

 	zone = nf_ct_zone(ct);

+	if (maniptype == NF_NAT_MANIP_SRC &&
+	    !random_port &&
+	    !ct->local_origin)
+		random_port = tuple_force_port_remap(orig_tuple);
+
 	/* 1) If this srcip/proto/src-proto-part is currently mapped,
 	 * and that same mapping gives a unique tuple within the given
 	 * range, use that.
@@ -520,8 +558,7 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
 	 * So far, we don't do local source mappings, so multiple
 	 * manips not an issue.
 	 */
-	if (maniptype == NF_NAT_MANIP_SRC &&
-	    !(range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL)) {
+	if (maniptype == NF_NAT_MANIP_SRC && !random_port) {
 		/* try the original tuple first */
 		if (in_range(orig_tuple, range)) {
 			if (!nf_nat_used_tuple(orig_tuple, ct)) {
@@ -545,7 +582,7 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
 	 */

 	/* Only bother mapping if it's not already in range and unique */
-	if (!(range->flags & NF_NAT_RANGE_PROTO_RANDOM_ALL)) {
+	if (!random_port) {
 		if (range->flags & NF_NAT_RANGE_PROTO_SPECIFIED) {
 			if (!(range->flags & NF_NAT_RANGE_PROTO_OFFSET) &&
 			    l4proto_in_range(tuple, maniptype,
diff --git a/scripts/tags.sh b/scripts/tags.sh
index b24bfaec6290..0418ba1d33f3 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -16,6 +16,8 @@ fi
 ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )"
 # tags and cscope files should also ignore MODVERSION *.mod.c files
 ignore="$ignore ( -name *.mod.c ) -prune -o"
+# RHEL tags and cscope should also ignore redhat/rpm
+ignore="$ignore ( -path redhat/rpm ) -prune -o"

 # Use make KBUILD_ABS_SRCTREE=1 {tags|cscope}
 # to force full paths for a non-O= build
diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c
index f290f78c3f30..d3e7ae04f5be 100644
--- a/security/integrity/platform_certs/load_uefi.c
+++ b/security/integrity/platform_certs/load_uefi.c
@@ -46,7 +46,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid,
 		return NULL;

 	if (*status != EFI_BUFFER_TOO_SMALL) {
-		pr_err("Couldn't get size: 0x%lx\n", *status);
+		pr_err("Couldn't get size: %s (0x%lx)\n",
+		       efi_status_to_str(*status), *status);
 		return NULL;
 	}

@@ -57,7 +58,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid,
 	*status = efi.get_variable(name, guid, NULL, &lsize, db);
 	if (*status != EFI_SUCCESS) {
 		kfree(db);
-		pr_err("Error reading db var: 0x%lx\n", *status);
+		pr_err("Error reading db var: %s (0x%lx)\n",
+		       efi_status_to_str(*status), *status);
 		return NULL;
 	}

diff --git a/security/lockdown/Kconfig b/security/lockdown/Kconfig
index e84ddf484010..d0501353a4b9 100644
--- a/security/lockdown/Kconfig
+++ b/security/lockdown/Kconfig
@@ -16,6 +16,19 @@ config SECURITY_LOCKDOWN_LSM_EARLY
 	  subsystem is fully initialised. If enabled, lockdown will
 	  unconditionally be called before any other LSMs.

+config LOCK_DOWN_IN_EFI_SECURE_BOOT
+	bool "Lock down the kernel in EFI Secure Boot mode"
+	default n
+	depends on EFI && SECURITY_LOCKDOWN_LSM_EARLY
+	help
+	  UEFI Secure Boot provides a mechanism for ensuring that the firmware
+	  will only load signed bootloaders and kernels.  Secure boot mode may
+	  be determined from EFI variables provided by the system firmware if
+	  not indicated by the boot parameters.
+
+	  Enabling this option results in kernel lockdown being triggered if
+	  EFI Secure Boot is set.
+
 choice
 	prompt "Kernel default lockdown mode"
 	default LOCK_DOWN_KERNEL_FORCE_NONE
diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c
index 87cbdc64d272..18555cf18da7 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -73,6 +73,7 @@ static int lockdown_is_locked_down(enum lockdown_reason what)

 static struct security_hook_list lockdown_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(locked_down, lockdown_is_locked_down),
+	LSM_HOOK_INIT(lock_kernel_down, lock_kernel_down),
 };

 static int __init lockdown_lsm_init(void)
diff --git a/security/security.c b/security/security.c
index 64abdfb20bc2..ed920477e11d 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2611,6 +2611,12 @@ int security_locked_down(enum lockdown_reason what)
 }
 EXPORT_SYMBOL(security_locked_down);

+int security_lock_kernel_down(const char *where, enum lockdown_reason level)
+{
+	return call_int_hook(lock_kernel_down, 0, where, level);
+}
+EXPORT_SYMBOL(security_lock_kernel_down);
+
 #ifdef CONFIG_PERF_EVENTS
 int security_perf_event_open(struct perf_event_attr *attr, int type)
 {
diff --git a/tools/testing/selftests/netfilter/nft_nat.sh b/tools/testing/selftests/netfilter/nft_nat.sh
index d88867d2fed7..349a319a9e51 100755
--- a/tools/testing/selftests/netfilter/nft_nat.sh
+++ b/tools/testing/selftests/netfilter/nft_nat.sh
@@ -880,8 +880,9 @@ EOF
 		return $ksft_skip
 	fi

-	# test default behaviour. Packet from ns1 to ns0 is redirected to ns2.
-	test_port_shadow "default" "CLIENT"
+	# test default behaviour. Packet from ns1 to ns0 is not redirected
+	# due to automatic port translation.
+	test_port_shadow "default" "ROUTER"

 	# test packet filter based mitigation: prevent forwarding of
 	# packets claiming to come from the service port.