path: root/4.8.15/1014_linux-4.8.15.patch

diff --git a/Makefile b/Makefile
index 6a74924..c7f0e79 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 8
-SUBLEVEL = 14
+SUBLEVEL = 15
 EXTRAVERSION =
 NAME = Psychotic Stoned Sheep
 
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 1e90bdb..fb307de 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -640,9 +640,8 @@
 				reg = <0x30730000 0x10000>;
 				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX7D_LCDIF_PIXEL_ROOT_CLK>,
-					<&clks IMX7D_CLK_DUMMY>,
-					<&clks IMX7D_CLK_DUMMY>;
-				clock-names = "pix", "axi", "disp_axi";
+					<&clks IMX7D_LCDIF_PIXEL_ROOT_CLK>;
+				clock-names = "pix", "axi";
 				status = "disabled";
 			};
 		};
diff --git a/arch/arm/boot/dts/orion5x-linkstation-lsgl.dts b/arch/arm/boot/dts/orion5x-linkstation-lsgl.dts
index 1cf644b..51dc734 100644
--- a/arch/arm/boot/dts/orion5x-linkstation-lsgl.dts
+++ b/arch/arm/boot/dts/orion5x-linkstation-lsgl.dts
@@ -82,6 +82,10 @@
 	gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
 };
 
+&sata {
+	nr-ports = <2>;
+};
+
 &ehci1 {
 	status = "okay";
 };
diff --git a/arch/m68k/include/asm/delay.h b/arch/m68k/include/asm/delay.h
index d28fa8f..c598d84 100644
--- a/arch/m68k/include/asm/delay.h
+++ b/arch/m68k/include/asm/delay.h
@@ -114,6 +114,6 @@ static inline void __udelay(unsigned long usecs)
  */
 #define	HZSCALE		(268435456 / (1000000 / HZ))
 
-#define ndelay(n) __delay(DIV_ROUND_UP((n) * ((((HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6), 1000));
+#define ndelay(n) __delay(DIV_ROUND_UP((n) * ((((HZSCALE) >> 11) * (loops_per_jiffy >> 11)) >> 6), 1000))
 
 #endif /* defined(_M68K_DELAY_H) */
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index c2c43f7..3a4ed9f 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -65,9 +65,9 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
 		unsigned long flags;				\
 		spin_lock_irqsave(&pa_tlb_lock, flags);		\
 		old_pte = *ptep;				\
-		set_pte(ptep, pteval);				\
 		if (pte_inserted(old_pte))			\
 			purge_tlb_entries(mm, addr);		\
+		set_pte(ptep, pteval);				\
 		spin_unlock_irqrestore(&pa_tlb_lock, flags);	\
 	} while (0)
 
@@ -478,8 +478,8 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned
 		spin_unlock_irqrestore(&pa_tlb_lock, flags);
 		return 0;
 	}
-	set_pte(ptep, pte_mkold(pte));
 	purge_tlb_entries(vma->vm_mm, addr);
+	set_pte(ptep, pte_mkold(pte));
 	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 	return 1;
 }
@@ -492,9 +492,9 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 
 	spin_lock_irqsave(&pa_tlb_lock, flags);
 	old_pte = *ptep;
-	set_pte(ptep, __pte(0));
 	if (pte_inserted(old_pte))
 		purge_tlb_entries(mm, addr);
+	set_pte(ptep, __pte(0));
 	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 
 	return old_pte;
@@ -504,8 +504,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 {
 	unsigned long flags;
 	spin_lock_irqsave(&pa_tlb_lock, flags);
-	set_pte(ptep, pte_wrprotect(*ptep));
 	purge_tlb_entries(mm, addr);
+	set_pte(ptep, pte_wrprotect(*ptep));
 	spin_unlock_irqrestore(&pa_tlb_lock, flags);
 }
 
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index c2259d4..bbb314eb 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -393,6 +393,15 @@ void __init parisc_setup_cache_timing(void)
 
 	/* calculate TLB flush threshold */
 
+	/* On SMP machines, skip the TLB measure of kernel text which
+	 * has been mapped as huge pages. */
+	if (num_online_cpus() > 1 && !parisc_requires_coherency()) {
+		threshold = max(cache_info.it_size, cache_info.dt_size);
+		threshold *= PAGE_SIZE;
+		threshold /= num_online_cpus();
+		goto set_tlb_threshold;
+	}
+
 	alltime = mfctl(16);
 	flush_tlb_all();
 	alltime = mfctl(16) - alltime;
@@ -411,6 +420,8 @@ void __init parisc_setup_cache_timing(void)
 		alltime, size, rangetime);
 
 	threshold = PAGE_ALIGN(num_online_cpus() * size * alltime / rangetime);
+
+set_tlb_threshold:
 	if (threshold)
 		parisc_tlb_flush_threshold = threshold;
 	printk(KERN_INFO "TLB flush threshold set to %lu KiB\n",
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 6755219..a4761b7 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -886,19 +886,10 @@ ENTRY(flush_dcache_page_asm)
 	fdc,m		r31(%r28)
 	fdc,m		r31(%r28)
 	fdc,m		r31(%r28)
-	cmpb,COND(<<)		%r28, %r25,1b
+	cmpb,COND(<<)	%r28, %r25,1b
 	fdc,m		r31(%r28)
 
 	sync
-
-#ifdef CONFIG_PA20
-	pdtlb,l		%r0(%r25)
-#else
-	tlb_lock	%r20,%r21,%r22
-	pdtlb		%r0(%r25)
-	tlb_unlock	%r20,%r21,%r22
-#endif
-
 	bv		%r0(%r2)
 	nop
 	.exit
@@ -973,17 +964,6 @@ ENTRY(flush_icache_page_asm)
 	fic,m		%r31(%sr4,%r28)
 
 	sync
-
-#ifdef CONFIG_PA20
-	pdtlb,l		%r0(%r28)
-	pitlb,l         %r0(%sr4,%r25)
-#else
-	tlb_lock        %r20,%r21,%r22
-	pdtlb		%r0(%r28)
-	pitlb           %r0(%sr4,%r25)
-	tlb_unlock      %r20,%r21,%r22
-#endif
-
 	bv		%r0(%r2)
 	nop
 	.exit
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 1a2a6e8..1894beb 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -78,7 +78,8 @@ src-wlib-y := string.S crt0.S crtsavres.S stdio.c main.c \
 		ns16550.c serial.c simple_alloc.c div64.S util.S \
 		gunzip_util.c elf_util.c $(zlib) devtree.c stdlib.c \
 		oflib.c ofconsole.c cuboot.c mpsc.c cpm-serial.c \
-		uartlite.c mpc52xx-psc.c opal.c opal-calls.S
+		uartlite.c mpc52xx-psc.c opal.c
+src-wlib-$(CONFIG_PPC64_BOOT_WRAPPER) +=  opal-calls.S
 src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c
 src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c
 src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c fsl-soc.c
diff --git a/arch/powerpc/boot/opal.c b/arch/powerpc/boot/opal.c
index d7b4fd4..0272570 100644
--- a/arch/powerpc/boot/opal.c
+++ b/arch/powerpc/boot/opal.c
@@ -13,7 +13,7 @@
 #include <libfdt.h>
 #include "../include/asm/opal-api.h"
 
-#ifdef __powerpc64__
+#ifdef CONFIG_PPC64_BOOT_WRAPPER
 
 /* Global OPAL struct used by opal-call.S */
 struct opal {
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 29aa8d1..248f28b 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -671,8 +671,10 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
 
 	/* Clear frozen state */
 	rc = eeh_clear_pe_frozen_state(pe, false);
-	if (rc)
+	if (rc) {
+		pci_unlock_rescan_remove();
 		return rc;
+	}
 
 	/* Give the system 5 seconds to finish running the user-space
 	 * hotplug shutdown scripts, e.g. ifdown for ethernet.  Yes,
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c
index 42c702b..6fa450c 100644
--- a/arch/powerpc/mm/hash64_4k.c
+++ b/arch/powerpc/mm/hash64_4k.c
@@ -55,7 +55,7 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
 	 */
 	rflags = htab_convert_pte_flags(new_pte);
 
-	if (!cpu_has_feature(CPU_FTR_NOEXECUTE) &&
+	if (cpu_has_feature(CPU_FTR_NOEXECUTE) &&
 	    !cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
 		rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap);
 
diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc/mm/hash64_64k.c
index 3bbbea0..1a68cb1 100644
--- a/arch/powerpc/mm/hash64_64k.c
+++ b/arch/powerpc/mm/hash64_64k.c
@@ -87,7 +87,7 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid,
 	subpg_pte = new_pte & ~subpg_prot;
 	rflags = htab_convert_pte_flags(subpg_pte);
 
-	if (!cpu_has_feature(CPU_FTR_NOEXECUTE) &&
+	if (cpu_has_feature(CPU_FTR_NOEXECUTE) &&
 	    !cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) {
 
 		/*
@@ -258,7 +258,7 @@ int __hash_page_64K(unsigned long ea, unsigned long access,
 
 	rflags = htab_convert_pte_flags(new_pte);
 
-	if (!cpu_has_feature(CPU_FTR_NOEXECUTE) &&
+	if (cpu_has_feature(CPU_FTR_NOEXECUTE) &&
 	    !cpu_has_feature(CPU_FTR_COHERENT_ICACHE))
 		rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap);
 
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index a4e070a..8c925ec 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -68,7 +68,7 @@ u64 x86_perf_event_update(struct perf_event *event)
 	int shift = 64 - x86_pmu.cntval_bits;
 	u64 prev_raw_count, new_raw_count;
 	int idx = hwc->idx;
-	s64 delta;
+	u64 delta;
 
 	if (idx == INTEL_PMC_IDX_FIXED_BTS)
 		return 0;
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 4c9a79b..3ef34c6 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4024,7 +4024,7 @@ __init int intel_pmu_init(void)
 
 	/* Support full width counters using alternative MSR range */
 	if (x86_pmu.intel_cap.full_width_write) {
-		x86_pmu.max_period = x86_pmu.cntval_mask;
+		x86_pmu.max_period = x86_pmu.cntval_mask >> 1;
 		x86_pmu.perfctr = MSR_IA32_PMC0;
 		pr_cont("full-width counters, ");
 	}
diff --git a/crypto/Makefile b/crypto/Makefile
index 99cc64ac..bd6a029 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_CRYPTO_ECDH) += ecdh_generic.o
 
 $(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
 $(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h
+$(obj)/rsa_helper.o: $(obj)/rsapubkey-asn1.h $(obj)/rsaprivkey-asn1.h
 clean-files += rsapubkey-asn1.c rsapubkey-asn1.h
 clean-files += rsaprivkey-asn1.c rsaprivkey-asn1.h
 
diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
index 86fb59b..c6e9920 100644
--- a/crypto/mcryptd.c
+++ b/crypto/mcryptd.c
@@ -254,18 +254,22 @@ static void *mcryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
 	goto out;
 }
 
-static inline void mcryptd_check_internal(struct rtattr **tb, u32 *type,
+static inline bool mcryptd_check_internal(struct rtattr **tb, u32 *type,
 					  u32 *mask)
 {
 	struct crypto_attr_type *algt;
 
 	algt = crypto_get_attr_type(tb);
 	if (IS_ERR(algt))
-		return;
-	if ((algt->type & CRYPTO_ALG_INTERNAL))
-		*type |= CRYPTO_ALG_INTERNAL;
-	if ((algt->mask & CRYPTO_ALG_INTERNAL))
-		*mask |= CRYPTO_ALG_INTERNAL;
+		return false;
+
+	*type |= algt->type & CRYPTO_ALG_INTERNAL;
+	*mask |= algt->mask & CRYPTO_ALG_INTERNAL;
+
+	if (*type & *mask & CRYPTO_ALG_INTERNAL)
+		return true;
+	else
+		return false;
 }
 
 static int mcryptd_hash_init_tfm(struct crypto_tfm *tfm)
@@ -492,7 +496,8 @@ static int mcryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
 	u32 mask = 0;
 	int err;
 
-	mcryptd_check_internal(tb, &type, &mask);
+	if (!mcryptd_check_internal(tb, &type, &mask))
+		return -EINVAL;
 
 	halg = ahash_attr_alg(tb[1], type, mask);
 	if (IS_ERR(halg))
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 2accf78..93e0d83 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -94,7 +94,7 @@ static struct acpi_device *to_acpi_dev(struct acpi_nfit_desc *acpi_desc)
 	return to_acpi_device(acpi_desc->dev);
 }
 
-static int xlat_status(void *buf, unsigned int cmd, u32 status)
+static int xlat_bus_status(void *buf, unsigned int cmd, u32 status)
 {
 	struct nd_cmd_clear_error *clear_err;
 	struct nd_cmd_ars_status *ars_status;
@@ -113,7 +113,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 		flags = ND_ARS_PERSISTENT | ND_ARS_VOLATILE;
 		if ((status >> 16 & flags) == 0)
 			return -ENOTTY;
-		break;
+		return 0;
 	case ND_CMD_ARS_START:
 		/* ARS is in progress */
 		if ((status & 0xffff) == NFIT_ARS_START_BUSY)
@@ -122,7 +122,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 		/* Command failed */
 		if (status & 0xffff)
 			return -EIO;
-		break;
+		return 0;
 	case ND_CMD_ARS_STATUS:
 		ars_status = buf;
 		/* Command failed */
@@ -146,7 +146,8 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 		 * then just continue with the returned results.
 		 */
 		if (status == NFIT_ARS_STATUS_INTR) {
-			if (ars_status->flags & NFIT_ARS_F_OVERFLOW)
+			if (ars_status->out_length >= 40 && (ars_status->flags
+						& NFIT_ARS_F_OVERFLOW))
 				return -ENOSPC;
 			return 0;
 		}
@@ -154,7 +155,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 		/* Unknown status */
 		if (status >> 16)
 			return -EIO;
-		break;
+		return 0;
 	case ND_CMD_CLEAR_ERROR:
 		clear_err = buf;
 		if (status & 0xffff)
@@ -163,7 +164,7 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 			return -EIO;
 		if (clear_err->length > clear_err->cleared)
 			return clear_err->cleared;
-		break;
+		return 0;
 	default:
 		break;
 	}
@@ -174,6 +175,16 @@ static int xlat_status(void *buf, unsigned int cmd, u32 status)
 	return 0;
 }
 
+static int xlat_status(struct nvdimm *nvdimm, void *buf, unsigned int cmd,
+		u32 status)
+{
+	if (!nvdimm)
+		return xlat_bus_status(buf, cmd, status);
+	if (status)
+		return -EIO;
+	return 0;
+}
+
 static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
 		struct nvdimm *nvdimm, unsigned int cmd, void *buf,
 		unsigned int buf_len, int *cmd_rc)
@@ -298,7 +309,8 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
 
 	for (i = 0, offset = 0; i < desc->out_num; i++) {
 		u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i, buf,
-				(u32 *) out_obj->buffer.pointer);
+				(u32 *) out_obj->buffer.pointer,
+				out_obj->buffer.length - offset);
 
 		if (offset + out_size > out_obj->buffer.length) {
 			dev_dbg(dev, "%s:%s output object underflow cmd: %s field: %d\n",
@@ -333,7 +345,8 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
 			 */
 			rc = buf_len - offset - in_buf.buffer.length;
 			if (cmd_rc)
-				*cmd_rc = xlat_status(buf, cmd, fw_status);
+				*cmd_rc = xlat_status(nvdimm, buf, cmd,
+						fw_status);
 		} else {
 			dev_err(dev, "%s:%s underrun cmd: %s buf_len: %d out_len: %d\n",
 					__func__, dimm_name, cmd_name, buf_len,
@@ -343,7 +356,7 @@ static int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc,
 	} else {
 		rc = 0;
 		if (cmd_rc)
-			*cmd_rc = xlat_status(buf, cmd, fw_status);
+			*cmd_rc = xlat_status(nvdimm, buf, cmd, fw_status);
 	}
 
  out:
@@ -1857,19 +1870,32 @@ static int ars_get_status(struct acpi_nfit_desc *acpi_desc)
 	return cmd_rc;
 }
 
-static int ars_status_process_records(struct nvdimm_bus *nvdimm_bus,
+static int ars_status_process_records(struct acpi_nfit_desc *acpi_desc,
 		struct nd_cmd_ars_status *ars_status)
 {
+	struct nvdimm_bus *nvdimm_bus = acpi_desc->nvdimm_bus;
 	int rc;
 	u32 i;
 
+	/*
+	 * First record starts at 44 byte offset from the start of the
+	 * payload.
+	 */
+	if (ars_status->out_length < 44)
+		return 0;
 	for (i = 0; i < ars_status->num_records; i++) {
+		/* only process full records */
+		if (ars_status->out_length
+				< 44 + sizeof(struct nd_ars_record) * (i + 1))
+			break;
 		rc = nvdimm_bus_add_poison(nvdimm_bus,
 				ars_status->records[i].err_address,
 				ars_status->records[i].length);
 		if (rc)
 			return rc;
 	}
+	if (i < ars_status->num_records)
+		dev_warn(acpi_desc->dev, "detected truncated ars results\n");
 
 	return 0;
 }
@@ -2122,8 +2148,7 @@ static int acpi_nfit_query_poison(struct acpi_nfit_desc *acpi_desc,
 	if (rc < 0 && rc != -ENOSPC)
 		return rc;
 
-	if (ars_status_process_records(acpi_desc->nvdimm_bus,
-				acpi_desc->ars_status))
+	if (ars_status_process_records(acpi_desc, acpi_desc->ars_status))
 		return -ENOMEM;
 
 	return 0;
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 2b38c1b..7a2e4d4 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -47,32 +47,15 @@ static void acpi_sleep_tts_switch(u32 acpi_state)
 	}
 }
 
-static void acpi_sleep_pts_switch(u32 acpi_state)
-{
-	acpi_status status;
-
-	status = acpi_execute_simple_method(NULL, "\\_PTS", acpi_state);
-	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-		/*
-		 * OS can't evaluate the _PTS object correctly. Some warning
-		 * message will be printed. But it won't break anything.
-		 */
-		printk(KERN_NOTICE "Failure in evaluating _PTS object\n");
-	}
-}
-
-static int sleep_notify_reboot(struct notifier_block *this,
+static int tts_notify_reboot(struct notifier_block *this,
 			unsigned long code, void *x)
 {
 	acpi_sleep_tts_switch(ACPI_STATE_S5);
-
-	acpi_sleep_pts_switch(ACPI_STATE_S5);
-
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block sleep_notifier = {
-	.notifier_call	= sleep_notify_reboot,
+static struct notifier_block tts_notifier = {
+	.notifier_call	= tts_notify_reboot,
 	.next		= NULL,
 	.priority	= 0,
 };
@@ -916,9 +899,9 @@ int __init acpi_sleep_init(void)
 	pr_info(PREFIX "(supports%s)\n", supported);
 
 	/*
-	 * Register the sleep_notifier to reboot notifier list so that the _TTS
-	 * and _PTS object can also be evaluated when the system enters S5.
+	 * Register the tts_notifier to reboot notifier list so that the _TTS
+	 * object can also be evaluated when the system enters S5.
 	 */
-	register_reboot_notifier(&sleep_notifier);
+	register_reboot_notifier(&tts_notifier);
 	return 0;
 }
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 5163c8f..5497f7f 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1413,8 +1413,14 @@ static ssize_t hot_remove_store(struct class *class,
 	return ret ? ret : count;
 }
 
+/*
+ * NOTE: hot_add attribute is not the usual read-only sysfs attribute. In a
+ * sense that reading from this file does alter the state of your system -- it
+ * creates a new un-initialized zram device and returns back this device's
+ * device_id (or an error code if it fails to create a new device).
+ */
 static struct class_attribute zram_control_class_attrs[] = {
-	__ATTR_RO(hot_add),
+	__ATTR(hot_add, 0400, hot_add_show, NULL),
 	__ATTR_WO(hot_remove),
 	__ATTR_NULL,
 };
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 0ec112e..2341f37 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -557,8 +557,9 @@ static int caam_probe(struct platform_device *pdev)
 	 * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel,
 	 * long pointers in master configuration register
 	 */
-	clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK, MCFGR_AWCACHE_CACH |
-		      MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | MCFGR_LARGE_BURST |
+	clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR,
+		      MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF |
+		      MCFGR_WDENABLE | MCFGR_LARGE_BURST |
 		      (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0));
 
 	/*
diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c
index b111e14..13e89af 100644
--- a/drivers/crypto/marvell/hash.c
+++ b/drivers/crypto/marvell/hash.c
@@ -168,12 +168,11 @@ static void mv_cesa_ahash_std_step(struct ahash_request *req)
 	mv_cesa_adjust_op(engine, &creq->op_tmpl);
 	memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl));
 
-	digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
-	for (i = 0; i < digsize / 4; i++)
-		writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i));
-
-	mv_cesa_adjust_op(engine, &creq->op_tmpl);
-	memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl));
+	if (!sreq->offset) {
+		digsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
+		for (i = 0; i < digsize / 4; i++)
+			writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i));
+	}
 
 	if (creq->cache_ptr)
 		memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET,
diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index ff64313..4894199 100644
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -324,7 +324,7 @@ static int check_vma(struct dax_dev *dax_dev, struct vm_area_struct *vma,
 		return -ENXIO;
 
 	/* prevent private mappings from being established */
-	if ((vma->vm_flags & VM_SHARED) != VM_SHARED) {
+	if ((vma->vm_flags & VM_MAYSHARE) != VM_MAYSHARE) {
 		dev_info(dev, "%s: %s: fail, attempted private mapping\n",
 				current->comm, func);
 		return -EINVAL;
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index bfb91d8..1006af4 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -872,23 +872,25 @@ static int peak_usb_create_dev(const struct peak_usb_adapter *peak_usb_adapter,
 static void peak_usb_disconnect(struct usb_interface *intf)
 {
 	struct peak_usb_device *dev;
+	struct peak_usb_device *dev_prev_siblings;
 
 	/* unregister as many netdev devices as siblings */
-	for (dev = usb_get_intfdata(intf); dev; dev = dev->prev_siblings) {
+	for (dev = usb_get_intfdata(intf); dev; dev = dev_prev_siblings) {
 		struct net_device *netdev = dev->netdev;
 		char name[IFNAMSIZ];
 
+		dev_prev_siblings = dev->prev_siblings;
 		dev->state &= ~PCAN_USB_STATE_CONNECTED;
 		strncpy(name, netdev->name, IFNAMSIZ);
 
 		unregister_netdev(netdev);
-		free_candev(netdev);
 
 		kfree(dev->cmd_buf);
 		dev->next_siblings = NULL;
 		if (dev->adapter->dev_free)
 			dev->adapter->dev_free(dev);
 
+		free_candev(netdev);
 		dev_info(&intf->dev, "%s removed\n", name);
 	}
 
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index a8b6949..23d4a17 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -715,7 +715,7 @@ EXPORT_SYMBOL_GPL(nd_cmd_in_size);
 
 u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd,
 		const struct nd_cmd_desc *desc, int idx, const u32 *in_field,
-		const u32 *out_field)
+		const u32 *out_field, unsigned long remainder)
 {
 	if (idx >= desc->out_num)
 		return UINT_MAX;
@@ -727,9 +727,24 @@ u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd,
 		return in_field[1];
 	else if (nvdimm && cmd == ND_CMD_VENDOR && idx == 2)
 		return out_field[1];
-	else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2)
-		return out_field[1] - 8;
-	else if (cmd == ND_CMD_CALL) {
+	else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2) {
+		/*
+		 * Per table 9-276 ARS Data in ACPI 6.1, out_field[1] is
+		 * "Size of Output Buffer in bytes, including this
+		 * field."
+		 */
+		if (out_field[1] < 4)
+			return 0;
+		/*
+		 * ACPI 6.1 is ambiguous if 'status' is included in the
+		 * output size. If we encounter an output size that
+		 * overshoots the remainder by 4 bytes, assume it was
+		 * including 'status'.
+		 */
+		if (out_field[1] - 8 == remainder)
+			return remainder;
+		return out_field[1] - 4;
+	} else if (cmd == ND_CMD_CALL) {
 		struct nd_cmd_pkg *pkg = (struct nd_cmd_pkg *) in_field;
 
 		return pkg->nd_size_out;
@@ -876,7 +891,7 @@ static int __nd_ioctl(struct nvdimm_bus *nvdimm_bus, struct nvdimm *nvdimm,
 	/* process an output envelope */
 	for (i = 0; i < desc->out_num; i++) {
 		u32 out_size = nd_cmd_out_size(nvdimm, cmd, desc, i,
-				(u32 *) in_env, (u32 *) out_env);
+				(u32 *) in_env, (u32 *) out_env, 0);
 		u32 copy;
 
 		if (out_size == UINT_MAX) {
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 7080ce2..8214eba 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1323,18 +1323,20 @@ lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 {
 	lockdep_assert_held(&phba->hbalock);
 
-	BUG_ON(!piocb || !piocb->vport);
+	BUG_ON(!piocb);
 
 	list_add_tail(&piocb->list, &pring->txcmplq);
 	piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ;
 
 	if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
 	   (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
-	   (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN) &&
-	    (!(piocb->vport->load_flag & FC_UNLOADING)))
-		mod_timer(&piocb->vport->els_tmofunc,
-			  jiffies +
-			  msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
+	   (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
+		BUG_ON(!piocb->vport);
+		if (!(piocb->vport->load_flag & FC_UNLOADING))
+			mod_timer(&piocb->vport->els_tmofunc,
+				  jiffies +
+				  msecs_to_jiffies(1000 * (phba->fc_ratov << 1)));
+	}
 
 	return 0;
 }
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index e3b30ea..a504e2e0 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -506,7 +506,7 @@ static void vhost_vsock_reset_orphans(struct sock *sk)
 	 * executing.
 	 */
 
-	if (!vhost_vsock_get(vsk->local_addr.svm_cid)) {
+	if (!vhost_vsock_get(vsk->remote_addr.svm_cid)) {
 		sock_set_flag(sk, SOCK_DONE);
 		vsk->peer_shutdown = SHUTDOWN_MASK;
 		sk->sk_state = SS_UNCONNECTED;
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index df4b3e6..93142bf 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1257,26 +1257,30 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
 			return -ECHILD;
 
 		op = ceph_snap(dir) == CEPH_SNAPDIR ?
-			CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
+			CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_GETATTR;
 		req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS);
 		if (!IS_ERR(req)) {
 			req->r_dentry = dget(dentry);
-			req->r_num_caps = 2;
+			req->r_num_caps = op == CEPH_MDS_OP_GETATTR ? 1 : 2;
 
 			mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
 			if (ceph_security_xattr_wanted(dir))
 				mask |= CEPH_CAP_XATTR_SHARED;
 			req->r_args.getattr.mask = mask;
 
-			req->r_locked_dir = dir;
 			err = ceph_mdsc_do_request(mdsc, NULL, req);
-			if (err == 0 || err == -ENOENT) {
-				if (dentry == req->r_dentry) {
-					valid = !d_unhashed(dentry);
-				} else {
-					d_invalidate(req->r_dentry);
-					err = -EAGAIN;
-				}
+			switch (err) {
+			case 0:
+				if (d_really_is_positive(dentry) &&
+				    d_inode(dentry) == req->r_target_inode)
+					valid = 1;
+				break;
+			case -ENOENT:
+				if (d_really_is_negative(dentry))
+					valid = 1;
+				/* Fallthrough */
+			default:
+				break;
 			}
 			ceph_mdsc_put_request(req);
 			dout("d_revalidate %p lookup result=%d\n",
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 4ff9251..eb5373a 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1709,8 +1709,6 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
 		return -EACCES;
 
 	if (attr->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID)) {
-		int kill;
-
 		attr->ia_valid &= ~(ATTR_KILL_SUID | ATTR_KILL_SGID |
 				    ATTR_MODE);
 		/*
@@ -1722,12 +1720,11 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
 			return ret;
 
 		attr->ia_mode = inode->i_mode;
-		kill = should_remove_suid(entry);
-		if (kill & ATTR_KILL_SUID) {
+		if (inode->i_mode & S_ISUID) {
 			attr->ia_valid |= ATTR_MODE;
 			attr->ia_mode &= ~S_ISUID;
 		}
-		if (kill & ATTR_KILL_SGID) {
+		if ((inode->i_mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
 			attr->ia_valid |= ATTR_MODE;
 			attr->ia_mode &= ~S_ISGID;
 		}
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 797d9c8..c8938eb 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -105,22 +105,16 @@ extern bool cpuhp_tasks_frozen;
 		{ .notifier_call = fn, .priority = pri };	\
 	__register_cpu_notifier(&fn##_nb);			\
 }
-#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
-#define cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
-#define __cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
-#endif /* #else #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
 
-#ifdef CONFIG_HOTPLUG_CPU
 extern int register_cpu_notifier(struct notifier_block *nb);
 extern int __register_cpu_notifier(struct notifier_block *nb);
 extern void unregister_cpu_notifier(struct notifier_block *nb);
 extern void __unregister_cpu_notifier(struct notifier_block *nb);
-#else
 
-#ifndef MODULE
-extern int register_cpu_notifier(struct notifier_block *nb);
-extern int __register_cpu_notifier(struct notifier_block *nb);
-#else
+#else /* #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) */
+#define cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
+#define __cpu_notifier(fn, pri)	do { (void)(fn); } while (0)
+
 static inline int register_cpu_notifier(struct notifier_block *nb)
 {
 	return 0;
@@ -130,7 +124,6 @@ static inline int __register_cpu_notifier(struct notifier_block *nb)
 {
 	return 0;
 }
-#endif
 
 static inline void unregister_cpu_notifier(struct notifier_block *nb)
 {
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index bbfce62..d02d65d 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -153,7 +153,7 @@ u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd,
 		const struct nd_cmd_desc *desc, int idx, void *buf);
 u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd,
 		const struct nd_cmd_desc *desc, int idx, const u32 *in_field,
-		const u32 *out_field);
+		const u32 *out_field, unsigned long remainder);
 int nvdimm_bus_check_dimm_count(struct nvdimm_bus *nvdimm_bus, int dimm_count);
 struct nd_region *nvdimm_pmem_region_create(struct nvdimm_bus *nvdimm_bus,
 		struct nd_region_desc *ndr_desc);
diff --git a/include/uapi/linux/can.h b/include/uapi/linux/can.h
index 9692cda..c48d93a 100644
--- a/include/uapi/linux/can.h
+++ b/include/uapi/linux/can.h
@@ -196,5 +196,6 @@ struct can_filter {
 };
 
 #define CAN_INV_FILTER 0x20000000U /* to be set in can_filter.can_id */
+#define CAN_RAW_FILTER_MAX 512 /* maximum number of can_filter set via setsockopt() */
 
 #endif /* !_UAPI_CAN_H */
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 341bf80..73fb59f 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -578,7 +578,6 @@ void __init cpuhp_threads_init(void)
 	kthread_unpark(this_cpu_read(cpuhp_state.thread));
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 EXPORT_SYMBOL(register_cpu_notifier);
 EXPORT_SYMBOL(__register_cpu_notifier);
 void unregister_cpu_notifier(struct notifier_block *nb)
@@ -595,6 +594,7 @@ void __unregister_cpu_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL(__unregister_cpu_notifier);
 
+#ifdef CONFIG_HOTPLUG_CPU
 /**
  * clear_tasks_mm_cpumask - Safely clear tasks' mm_cpumask for a CPU
  * @cpu: a CPU id
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 1ec0f48..2c49d76 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -65,8 +65,72 @@ static inline void clear_rt_mutex_waiters(struct rt_mutex *lock)
 
 static void fixup_rt_mutex_waiters(struct rt_mutex *lock)
 {
-	if (!rt_mutex_has_waiters(lock))
-		clear_rt_mutex_waiters(lock);
+	unsigned long owner, *p = (unsigned long *) &lock->owner;
+
+	if (rt_mutex_has_waiters(lock))
+		return;
+
+	/*
+	 * The rbtree has no waiters enqueued, now make sure that the
+	 * lock->owner still has the waiters bit set, otherwise the
+	 * following can happen:
+	 *
+	 * CPU 0	CPU 1		CPU2
+	 * l->owner=T1
+	 *		rt_mutex_lock(l)
+	 *		lock(l->lock)
+	 *		l->owner = T1 | HAS_WAITERS;
+	 *		enqueue(T2)
+	 *		boost()
+	 *		  unlock(l->lock)
+	 *		block()
+	 *
+	 *				rt_mutex_lock(l)
+	 *				lock(l->lock)
+	 *				l->owner = T1 | HAS_WAITERS;
+	 *				enqueue(T3)
+	 *				boost()
+	 *				  unlock(l->lock)
+	 *				block()
+	 *		signal(->T2)	signal(->T3)
+	 *		lock(l->lock)
+	 *		dequeue(T2)
+	 *		deboost()
+	 *		  unlock(l->lock)
+	 *				lock(l->lock)
+	 *				dequeue(T3)
+	 *				 ==> wait list is empty
+	 *				deboost()
+	 *				 unlock(l->lock)
+	 *		lock(l->lock)
+	 *		fixup_rt_mutex_waiters()
+	 *		  if (wait_list_empty(l) {
+	 *		    l->owner = owner
+	 *		    owner = l->owner & ~HAS_WAITERS;
+	 *		      ==> l->owner = T1
+	 *		  }
+	 *				lock(l->lock)
+	 * rt_mutex_unlock(l)		fixup_rt_mutex_waiters()
+	 *				  if (wait_list_empty(l) {
+	 *				    owner = l->owner & ~HAS_WAITERS;
+	 * cmpxchg(l->owner, T1, NULL)
+	 *  ===> Success (l->owner = NULL)
+	 *
+	 *				    l->owner = owner
+	 *				      ==> l->owner = T1
+	 *				  }
+	 *
+	 * With the check for the waiter bit in place T3 on CPU2 will not
+	 * overwrite. All tasks fiddling with the waiters bit are
+	 * serialized by l->lock, so nothing else can modify the waiters
+	 * bit. If the bit is set then nothing can change l->owner either
+	 * so the simple RMW is safe. The cmpxchg() will simply fail if it
+	 * happens in the middle of the RMW because the waiters bit is
+	 * still set.
+	 */
+	owner = READ_ONCE(*p);
+	if (owner & RT_MUTEX_HAS_WAITERS)
+		WRITE_ONCE(*p, owner & ~RT_MUTEX_HAS_WAITERS);
 }
 
 /*
diff --git a/kernel/locking/rtmutex_common.h b/kernel/locking/rtmutex_common.h
index 4f5f83c..e317e1c 100644
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
@@ -75,8 +75,9 @@ task_top_pi_waiter(struct task_struct *p)
 
 static inline struct task_struct *rt_mutex_owner(struct rt_mutex *lock)
 {
-	return (struct task_struct *)
-		((unsigned long)lock->owner & ~RT_MUTEX_OWNER_MASKALL);
+	unsigned long owner = (unsigned long) READ_ONCE(lock->owner);
+
+	return (struct task_struct *) (owner & ~RT_MUTEX_OWNER_MASKALL);
 }
 
 /*
diff --git a/kernel/sched/auto_group.c b/kernel/sched/auto_group.c
index a5d966c..418d9b6 100644
--- a/kernel/sched/auto_group.c
+++ b/kernel/sched/auto_group.c
@@ -192,6 +192,7 @@ int proc_sched_autogroup_set_nice(struct task_struct *p, int nice)
 {
 	static unsigned long next = INITIAL_JIFFIES;
 	struct autogroup *ag;
+	unsigned long shares;
 	int err;
 
 	if (nice < MIN_NICE || nice > MAX_NICE)
@@ -210,9 +211,10 @@ int proc_sched_autogroup_set_nice(struct task_struct *p, int nice)
 
 	next = HZ / 10 + jiffies;
 	ag = autogroup_task_get(p);
+	shares = scale_load(sched_prio_to_weight[nice + 20]);
 
 	down_write(&ag->lock);
-	err = sched_group_set_shares(ag->tg, sched_prio_to_weight[nice + 20]);
+	err = sched_group_set_shares(ag->tg, shares);
 	if (!err)
 		ag->nice = nice;
 	up_write(&ag->lock);
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 7e6df7a..67f8fa9 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -2849,7 +2849,7 @@ static bool batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 							     &tvlv_tt_data,
 							     &tt_change,
 							     &tt_len);
-		if (!tt_len)
+		if (!tt_len || !tvlv_len)
 			goto unlock;
 
 		/* Copy the last orig_node's OGM buffer */
@@ -2867,7 +2867,7 @@ static bool batadv_send_my_tt_response(struct batadv_priv *bat_priv,
 							     &tvlv_tt_data,
 							     &tt_change,
 							     &tt_len);
-		if (!tt_len)
+		if (!tt_len || !tvlv_len)
 			goto out;
 
 		/* fill the rest of the tvlv with the real TT entries */
diff --git a/net/can/raw.c b/net/can/raw.c
index 972c187..b075f02 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -499,6 +499,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
 		if (optlen % sizeof(struct can_filter) != 0)
 			return -EINVAL;
 
+		if (optlen > CAN_RAW_FILTER_MAX * sizeof(struct can_filter))
+			return -EINVAL;
+
 		count = optlen / sizeof(struct can_filter);
 
 		if (count > 1) {