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-rw-r--r--SOURCES/patch-5.16-redhat.patch1851
1 files changed, 1851 insertions, 0 deletions
diff --git a/SOURCES/patch-5.16-redhat.patch b/SOURCES/patch-5.16-redhat.patch
new file mode 100644
index 0000000..e0a88e2
--- /dev/null
+++ b/SOURCES/patch-5.16-redhat.patch
@@ -0,0 +1,1851 @@
+ 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/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 +-
+ 44 files changed, 746 insertions(+), 191 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/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.