16 files changed, 152 insertions, 156 deletions
diff --git a/Documentation/arch/x86/boot.rst b/Documentation/arch/x86/boot.rst
index 6d36ce86fd8ec0..dca3875a24351e 100644
--- a/Documentation/arch/x86/boot.rst
+++ b/Documentation/arch/x86/boot.rst
@@ -95,26 +95,26 @@ Memory Layout
 The traditional memory map for the kernel loader, used for Image or
 zImage kernels, typically looks like::
 
-  		|  			 |
+		|  			 |
   0A0000	+------------------------+
-  		|  Reserved for BIOS	 |	Do not use.  Reserved for BIOS EBDA.
+		|  Reserved for BIOS	 |	Do not use.  Reserved for BIOS EBDA.
   09A000	+------------------------+
-  		|  Command line		 |
-  		|  Stack/heap		 |	For use by the kernel real-mode code.
+		|  Command line		 |
+		|  Stack/heap		 |	For use by the kernel real-mode code.
   098000	+------------------------+
-  		|  Kernel setup		 |	The kernel real-mode code.
+		|  Kernel setup		 |	The kernel real-mode code.
   090200	+------------------------+
-  		|  Kernel boot sector	 |	The kernel legacy boot sector.
+		|  Kernel boot sector	 |	The kernel legacy boot sector.
   090000	+------------------------+
-  		|  Protected-mode kernel |	The bulk of the kernel image.
+		|  Protected-mode kernel |	The bulk of the kernel image.
   010000	+------------------------+
-  		|  Boot loader		 |	<- Boot sector entry point 0000:7C00
+		|  Boot loader		 |	<- Boot sector entry point 0000:7C00
   001000	+------------------------+
-  		|  Reserved for MBR/BIOS |
+		|  Reserved for MBR/BIOS |
   000800	+------------------------+
-  		|  Typically used by MBR |
+		|  Typically used by MBR |
   000600	+------------------------+
-  		|  BIOS use only	 |
+		|  BIOS use only	 |
   000000	+------------------------+
 
 When using bzImage, the protected-mode kernel was relocated to
@@ -142,27 +142,27 @@ above the 0x9A000 point; too many BIOSes will break above that point.
 For a modern bzImage kernel with boot protocol version >= 2.02, a
 memory layout like the following is suggested::
 
-  		~  			 ~
-  		|  Protected-mode kernel |
+		~  			 ~
+		|  Protected-mode kernel |
   100000	+------------------------+
-  		|  I/O memory hole	 |
+		|  I/O memory hole	 |
   0A0000	+------------------------+
-  		|  Reserved for BIOS	 |	Leave as much as possible unused
-  		~  			 ~
-  		|  Command line		 |	(Can also be below the X+10000 mark)
+		|  Reserved for BIOS	 |	Leave as much as possible unused
+		~  			 ~
+		|  Command line		 |	(Can also be below the X+10000 mark)
   X+10000	+------------------------+
-  		|  Stack/heap		 |	For use by the kernel real-mode code.
+		|  Stack/heap		 |	For use by the kernel real-mode code.
   X+08000	+------------------------+
-  		|  Kernel setup		 |	The kernel real-mode code.
-  		|  Kernel boot sector	 |	The kernel legacy boot sector.
+		|  Kernel setup		 |	The kernel real-mode code.
+		|  Kernel boot sector	 |	The kernel legacy boot sector.
   X		+------------------------+
-  		|  Boot loader		 |	<- Boot sector entry point 0000:7C00
+		|  Boot loader		 |	<- Boot sector entry point 0000:7C00
   001000	+------------------------+
-  		|  Reserved for MBR/BIOS |
+		|  Reserved for MBR/BIOS |
   000800	+------------------------+
-  		|  Typically used by MBR |
+		|  Typically used by MBR |
   000600	+------------------------+
-  		|  BIOS use only	 |
+		|  BIOS use only	 |
   000000	+------------------------+
 
   ... where the address X is as low as the design of the boot loader permits.
@@ -433,7 +433,7 @@ Protocol:	2.00+
 
   Assigned boot loader IDs:
 
-	== =======================================
+	==== =======================================
 	0x0  LILO
 	     (0x00 reserved for pre-2.00 bootloader)
 	0x1  Loadlin
@@ -456,7 +456,7 @@ Protocol:	2.00+
 	     <http://sebastian-plotz.blogspot.de>
 	0x12 OVMF UEFI virtualization stack
 	0x13 barebox
-	== =======================================
+	==== =======================================
 
   Please contact <hpa@zytor.com> if you need a bootloader ID value assigned.
 
@@ -809,12 +809,12 @@ Protocol:	2.09+
   as follow::
 
    struct setup_data {
-   	__u64 next;
-   	__u32 type;
-   	__u32 len;
-   	__u8 data[];
+	__u64 next;
+	__u32 type;
+	__u32 len;
+	__u8 data[];
    }
-   
+
   Where, the next is a 64-bit physical pointer to the next node of
   linked list, the next field of the last node is 0; the type is used
   to identify the contents of data; the len is the length of data
@@ -835,10 +835,10 @@ Protocol:	2.09+
   protocol 2.15::
 
    struct setup_indirect {
-   	__u32 type;
-   	__u32 reserved;		/* Reserved, must be set to zero. */
-   	__u64 len;
-   	__u64 addr;
+	__u32 type;
+	__u32 reserved;		/* Reserved, must be set to zero. */
+	__u64 len;
+	__u64 addr;
    };
 
   The type member is a SETUP_INDIRECT | SETUP_* type. However, it cannot be
@@ -850,15 +850,15 @@ Protocol:	2.09+
   In this case setup_data and setup_indirect will look like this::
 
    struct setup_data {
-   	.next = 0,	/* or <addr_of_next_setup_data_struct> */
-   	.type = SETUP_INDIRECT,
-   	.len = sizeof(setup_indirect),
-   	.data[sizeof(setup_indirect)] = (struct setup_indirect) {
-   		.type = SETUP_INDIRECT | SETUP_E820_EXT,
-   		.reserved = 0,
-   		.len = <len_of_SETUP_E820_EXT_data>,
-   		.addr = <addr_of_SETUP_E820_EXT_data>,
-   	},
+	.next = 0,	/* or <addr_of_next_setup_data_struct> */
+	.type = SETUP_INDIRECT,
+	.len = sizeof(setup_indirect),
+	.data[sizeof(setup_indirect)] = (struct setup_indirect) {
+		.type = SETUP_INDIRECT | SETUP_E820_EXT,
+		.reserved = 0,
+		.len = <len_of_SETUP_E820_EXT_data>,
+		.addr = <addr_of_SETUP_E820_EXT_data>,
+	},
    }
 
 .. note::
@@ -897,11 +897,11 @@ Offset/size:	0x260/4
   The kernel runtime start address is determined by the following algorithm::
 
    if (relocatable_kernel) {
-    	if (load_address < pref_address)
-    		load_address = pref_address;
-    	runtime_start = align_up(load_address, kernel_alignment);
+	if (load_address < pref_address)
+		load_address = pref_address;
+	runtime_start = align_up(load_address, kernel_alignment);
    } else {
-    	runtime_start = pref_address;
+	runtime_start = pref_address;
    }
 
 Hence the necessary memory window location and size can be estimated by
@@ -975,22 +975,22 @@ after kernel_info_var_len_data label. Each chunk of variable size data has to
 be prefixed with header/magic and its size, e.g.::
 
   kernel_info:
-  	.ascii  "LToP"		/* Header, Linux top (structure). */
-  	.long   kernel_info_var_len_data - kernel_info
-  	.long   kernel_info_end - kernel_info
-  	.long   0x01234567	/* Some fixed size data for the bootloaders. */
+	.ascii  "LToP"		/* Header, Linux top (structure). */
+	.long   kernel_info_var_len_data - kernel_info
+	.long   kernel_info_end - kernel_info
+	.long   0x01234567	/* Some fixed size data for the bootloaders. */
   kernel_info_var_len_data:
   example_struct:		/* Some variable size data for the bootloaders. */
-  	.ascii  "0123"		/* Header/Magic. */
-  	.long   example_struct_end - example_struct
-  	.ascii  "Struct"
-  	.long   0x89012345
+	.ascii  "0123"		/* Header/Magic. */
+	.long   example_struct_end - example_struct
+	.ascii  "Struct"
+	.long   0x89012345
   example_struct_end:
   example_strings:		/* Some variable size data for the bootloaders. */
-  	.ascii  "ABCD"		/* Header/Magic. */
-  	.long   example_strings_end - example_strings
-  	.asciz  "String_0"
-  	.asciz  "String_1"
+	.ascii  "ABCD"		/* Header/Magic. */
+	.long   example_strings_end - example_strings
+	.asciz  "String_0"
+	.asciz  "String_1"
   example_strings_end:
   kernel_info_end:
 
@@ -1132,53 +1132,53 @@ Such a boot loader should enter the following fields in the header::
   unsigned long base_ptr;	/* base address for real-mode segment */
 
   if (setup_sects == 0)
-  	setup_sects = 4;
+	setup_sects = 4;
 
   if (protocol >= 0x0200) {
-  	type_of_loader = <type code>;
-  	if (loading_initrd) {
-  		ramdisk_image = <initrd_address>;
-  		ramdisk_size = <initrd_size>;
-  	}
-
-  	if (protocol >= 0x0202 && loadflags & 0x01)
-  		heap_end = 0xe000;
-  	else
-  		heap_end = 0x9800;
-
-  	if (protocol >= 0x0201) {
-  		heap_end_ptr = heap_end - 0x200;
-  		loadflags |= 0x80;		/* CAN_USE_HEAP */
-  	}
-
-  	if (protocol >= 0x0202) {
-  		cmd_line_ptr = base_ptr + heap_end;
-  		strcpy(cmd_line_ptr, cmdline);
-  	} else {
-  		cmd_line_magic	= 0xA33F;
-  		cmd_line_offset = heap_end;
-  		setup_move_size = heap_end + strlen(cmdline) + 1;
-  		strcpy(base_ptr + cmd_line_offset, cmdline);
-  	}
+	type_of_loader = <type code>;
+	if (loading_initrd) {
+		ramdisk_image = <initrd_address>;
+		ramdisk_size = <initrd_size>;
+	}
+
+	if (protocol >= 0x0202 && loadflags & 0x01)
+		heap_end = 0xe000;
+	else
+		heap_end = 0x9800;
+
+	if (protocol >= 0x0201) {
+		heap_end_ptr = heap_end - 0x200;
+		loadflags |= 0x80;		/* CAN_USE_HEAP */
+	}
+
+	if (protocol >= 0x0202) {
+		cmd_line_ptr = base_ptr + heap_end;
+		strcpy(cmd_line_ptr, cmdline);
+	} else {
+		cmd_line_magic	= 0xA33F;
+		cmd_line_offset = heap_end;
+		setup_move_size = heap_end + strlen(cmdline) + 1;
+		strcpy(base_ptr + cmd_line_offset, cmdline);
+	}
   } else {
-  	/* Very old kernel */
+	/* Very old kernel */
 
-  	heap_end = 0x9800;
+	heap_end = 0x9800;
 
-  	cmd_line_magic	= 0xA33F;
-  	cmd_line_offset = heap_end;
+	cmd_line_magic	= 0xA33F;
+	cmd_line_offset = heap_end;
 
-  	/* A very old kernel MUST have its real-mode code loaded at 0x90000 */
-  	if (base_ptr != 0x90000) {
-  		/* Copy the real-mode kernel */
-  		memcpy(0x90000, base_ptr, (setup_sects + 1) * 512);
-  		base_ptr = 0x90000;		 /* Relocated */
-  	}
+	/* A very old kernel MUST have its real-mode code loaded at 0x90000 */
+	if (base_ptr != 0x90000) {
+		/* Copy the real-mode kernel */
+		memcpy(0x90000, base_ptr, (setup_sects + 1) * 512);
+		base_ptr = 0x90000;		 /* Relocated */
+	}
 
-  	strcpy(0x90000 + cmd_line_offset, cmdline);
+	strcpy(0x90000 + cmd_line_offset, cmdline);
 
-  	/* It is recommended to clear memory up to the 32K mark */
-  	memset(0x90000 + (setup_sects + 1) * 512, 0, (64 - (setup_sects + 1)) * 512);
+	/* It is recommended to clear memory up to the 32K mark */
+	memset(0x90000 + (setup_sects + 1) * 512, 0, (64 - (setup_sects + 1)) * 512);
   }
 
 
diff --git a/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst b/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
index 4a2d3b27aa4d21..aaefeda0e16444 100644
--- a/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
+++ b/Documentation/translations/zh_CN/core-api/irq/irq-domain.rst
@@ -109,10 +109,6 @@ irq_domain维护着从hwirq号到Linux IRQ的radix的树状映射。 当一个hw
 如果hwirq号可以非常大，树状映射是一个很好的选择，因为它不需要分配一个和最大hwirq
 号一样大的表。 缺点是，hwirq到IRQ号的查找取决于表中有多少条目。
 
-irq_domain_add_tree()和irq_domain_create_tree()在功能上是等价的，除了第一
-个参数不同——前者接受一个Open Firmware特定的 'struct device_node' ，而后者接受
-一个更通用的抽象 'struct fwnode_handle' 。
-
 很少有驱动应该需要这个映射。
 
 无映射
diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c
index e8b6af199c738e..9293ce50574dad 100644
--- a/arch/x86/events/amd/uncore.c
+++ b/arch/x86/events/amd/uncore.c
@@ -656,14 +656,11 @@ static int amd_uncore_df_event_init(struct perf_event *event)
 	struct hw_perf_event *hwc = &event->hw;
 	int ret = amd_uncore_event_init(event);
 
-	if (ret || pmu_version < 2)
-		return ret;
-
 	hwc->config = event->attr.config &
 		      (pmu_version >= 2 ? AMD64_PERFMON_V2_RAW_EVENT_MASK_NB :
 					  AMD64_RAW_EVENT_MASK_NB);
 
-	return 0;
+	return ret;
 }
 
 static int amd_uncore_df_add(struct perf_event *event, int flags)
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index 853fe073bab301..bdf3f0d0fe2167 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3378,6 +3378,9 @@ static int handle_pmi_common(struct pt_regs *regs, u64 status)
 
 		if (!test_bit(bit, cpuc->active_mask))
 			continue;
+		/* Event may have already been cleared: */
+		if (!event)
+			continue;
 
 		/*
 		 * There may be unprocessed PEBS records in the PEBS buffer,
diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c
index 66f1efa16fbb72..9322a9287dc7f5 100644
--- a/arch/x86/kernel/cpu/sgx/ioctl.c
+++ b/arch/x86/kernel/cpu/sgx/ioctl.c
@@ -242,7 +242,7 @@ static int __sgx_encl_add_page(struct sgx_encl *encl,
 /*
  * If the caller requires measurement of the page as a proof for the content,
  * use EEXTEND to add a measurement for 256 bytes of the page. Repeat this
- * operation until the entire page is measured."
+ * operation until the entire page is measured.
  */
 static int __sgx_encl_extend(struct sgx_encl *encl,
 			     struct sgx_epc_page *epc_page)
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 48113c5193aa3c..76153dfb58c9d0 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -1946,7 +1946,7 @@ static int dump_xsave_layout_desc(struct coredump_params *cprm)
 		};
 
 		if (!dump_emit(cprm, &xc, sizeof(xc)))
-			return 0;
+			return -1;
 
 		num_records++;
 	}
@@ -1984,7 +1984,7 @@ int elf_coredump_extra_notes_write(struct coredump_params *cprm)
 		return 1;
 
 	num_records = dump_xsave_layout_desc(cprm);
-	if (!num_records)
+	if (num_records < 0)
 		return 1;
 
 	/* Total size should be equal to the number of records */
diff --git a/drivers/irqchip/irq-mchp-eic.c b/drivers/irqchip/irq-mchp-eic.c
index 2474fa467a059e..31093a8ab67c3a 100644
--- a/drivers/irqchip/irq-mchp-eic.c
+++ b/drivers/irqchip/irq-mchp-eic.c
@@ -170,7 +170,7 @@ static int mchp_eic_domain_alloc(struct irq_domain *domain, unsigned int virq,
 
 	ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type);
 	if (ret || hwirq >= MCHP_EIC_NIRQ)
-		return ret;
+		return ret ?: -EINVAL;
 
 	switch (type) {
 	case IRQ_TYPE_EDGE_RISING:
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 952d3c8dd6b7a2..62f81bbeb4906b 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -730,22 +730,6 @@ static inline void msi_device_domain_free_wired(struct irq_domain *domain, unsig
 }
 #endif
 
-static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
-						     const struct irq_domain_ops *ops,
-						     void *host_data)
-{
-	struct irq_domain_info info = {
-		.fwnode		= of_fwnode_handle(of_node),
-		.hwirq_max	= ~0U,
-		.ops		= ops,
-		.host_data	= host_data,
-	};
-	struct irq_domain *d;
-
-	d = irq_domain_instantiate(&info);
-	return IS_ERR(d) ? NULL : d;
-}
-
 static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
 						       unsigned int size,
 						       const struct irq_domain_ops *ops,
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 9f6de068295d30..42af2292951d4f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -1631,7 +1631,6 @@ enum tlb_flush_reason {
 	TLB_LOCAL_MM_SHOOTDOWN,
 	TLB_REMOTE_SEND_IPI,
 	TLB_REMOTE_WRONG_CPU,
-	NR_TLB_FLUSH_REASONS,
 };
 
 /**
diff --git a/include/linux/rseq_entry.h b/include/linux/rseq_entry.h
index c92167ff8a7fbd..a36b472627dec8 100644
--- a/include/linux/rseq_entry.h
+++ b/include/linux/rseq_entry.h
@@ -596,7 +596,7 @@ static __always_inline void rseq_exit_to_user_mode_legacy(void)
 
 void __rseq_debug_syscall_return(struct pt_regs *regs);
 
-static inline void rseq_debug_syscall_return(struct pt_regs *regs)
+static __always_inline void rseq_debug_syscall_return(struct pt_regs *regs)
 {
 	if (static_branch_unlikely(&rseq_debug_enabled))
 		__rseq_debug_syscall_return(regs);
diff --git a/include/trace/events/tlb.h b/include/trace/events/tlb.h
index b4d8e7dc38f880..fb836951168564 100644
--- a/include/trace/events/tlb.h
+++ b/include/trace/events/tlb.h
@@ -12,8 +12,9 @@
 	EM(  TLB_FLUSH_ON_TASK_SWITCH,	"flush on task switch" )	\
 	EM(  TLB_REMOTE_SHOOTDOWN,	"remote shootdown" )		\
 	EM(  TLB_LOCAL_SHOOTDOWN,	"local shootdown" )		\
-	EM(  TLB_LOCAL_MM_SHOOTDOWN,	"local mm shootdown" )		\
-	EMe( TLB_REMOTE_SEND_IPI,	"remote ipi send" )
+	EM(  TLB_LOCAL_MM_SHOOTDOWN,	"local MM shootdown" )		\
+	EM(  TLB_REMOTE_SEND_IPI,	"remote IPI send" )		\
+	EMe( TLB_REMOTE_WRONG_CPU,	"remote wrong CPU" )
 
 /*
  * First define the enums in TLB_FLUSH_REASON to be exported to userspace
diff --git a/kernel/cpu.c b/kernel/cpu.c
index b674fdf96208be..8df2d773fe3b52 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -249,6 +249,14 @@ err:
 	return ret;
 }
 
+/*
+ * The former STARTING/DYING states, ran with IRQs disabled and must not fail.
+ */
+static bool cpuhp_is_atomic_state(enum cpuhp_state state)
+{
+	return CPUHP_AP_IDLE_DEAD <= state && state < CPUHP_AP_ONLINE;
+}
+
 #ifdef CONFIG_SMP
 static bool cpuhp_is_ap_state(enum cpuhp_state state)
 {
@@ -271,14 +279,6 @@ static inline void complete_ap_thread(struct cpuhp_cpu_state *st, bool bringup)
 	complete(done);
 }
 
-/*
- * The former STARTING/DYING states, ran with IRQs disabled and must not fail.
- */
-static bool cpuhp_is_atomic_state(enum cpuhp_state state)
-{
-	return CPUHP_AP_IDLE_DEAD <= state && state < CPUHP_AP_ONLINE;
-}
-
 /* Synchronization state management */
 enum cpuhp_sync_state {
 	SYNC_STATE_DEAD,
@@ -2364,7 +2364,14 @@ static int cpuhp_issue_call(int cpu, enum cpuhp_state state, bool bringup,
 	else
 		ret = cpuhp_invoke_callback(cpu, state, bringup, node, NULL);
 #else
-	ret = cpuhp_invoke_callback(cpu, state, bringup, node, NULL);
+	if (cpuhp_is_atomic_state(state)) {
+		guard(irqsave)();
+		ret = cpuhp_invoke_callback(cpu, state, bringup, node, NULL);
+		/* STARTING/DYING must not fail! */
+		WARN_ON_ONCE(ret);
+	} else {
+		ret = cpuhp_invoke_callback(cpu, state, bringup, node, NULL);
+	}
 #endif
 	BUG_ON(ret && !bringup);
 	return ret;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index ece716879cbc24..dad0d3d2e85f7d 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2317,8 +2317,6 @@ out:
 	perf_event__header_size(leader);
 }
 
-static void sync_child_event(struct perf_event *child_event);
-
 static void perf_child_detach(struct perf_event *event)
 {
 	struct perf_event *parent_event = event->parent;
@@ -2337,7 +2335,6 @@ static void perf_child_detach(struct perf_event *event)
 	lockdep_assert_held(&parent_event->child_mutex);
 	 */
 
-	sync_child_event(event);
 	list_del_init(&event->child_list);
 }
 
@@ -4588,6 +4585,7 @@ out:
 static void perf_remove_from_owner(struct perf_event *event);
 static void perf_event_exit_event(struct perf_event *event,
 				  struct perf_event_context *ctx,
+				  struct task_struct *task,
 				  bool revoke);
 
 /*
@@ -4615,7 +4613,7 @@ static void perf_event_remove_on_exec(struct perf_event_context *ctx)
 
 		modified = true;
 
-		perf_event_exit_event(event, ctx, false);
+		perf_event_exit_event(event, ctx, ctx->task, false);
 	}
 
 	raw_spin_lock_irqsave(&ctx->lock, flags);
@@ -12518,7 +12516,7 @@ static void __pmu_detach_event(struct pmu *pmu, struct perf_event *event,
 	/*
 	 * De-schedule the event and mark it REVOKED.
 	 */
-	perf_event_exit_event(event, ctx, true);
+	perf_event_exit_event(event, ctx, ctx->task, true);
 
 	/*
 	 * All _free_event() bits that rely on event->pmu:
@@ -14075,14 +14073,13 @@ void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu)
 }
 EXPORT_SYMBOL_GPL(perf_pmu_migrate_context);
 
-static void sync_child_event(struct perf_event *child_event)
+static void sync_child_event(struct perf_event *child_event,
+			     struct task_struct *task)
 {
 	struct perf_event *parent_event = child_event->parent;
 	u64 child_val;
 
 	if (child_event->attr.inherit_stat) {
-		struct task_struct *task = child_event->ctx->task;
-
 		if (task && task != TASK_TOMBSTONE)
 			perf_event_read_event(child_event, task);
 	}
@@ -14101,7 +14098,9 @@ static void sync_child_event(struct perf_event *child_event)
 
 static void
 perf_event_exit_event(struct perf_event *event,
-		      struct perf_event_context *ctx, bool revoke)
+		      struct perf_event_context *ctx,
+		      struct task_struct *task,
+		      bool revoke)
 {
 	struct perf_event *parent_event = event->parent;
 	unsigned long detach_flags = DETACH_EXIT;
@@ -14124,6 +14123,9 @@ perf_event_exit_event(struct perf_event *event,
 		mutex_lock(&parent_event->child_mutex);
 		/* PERF_ATTACH_ITRACE might be set concurrently */
 		attach_state = READ_ONCE(event->attach_state);
+
+		if (attach_state & PERF_ATTACH_CHILD)
+			sync_child_event(event, task);
 	}
 
 	if (revoke)
@@ -14215,7 +14217,7 @@ static void perf_event_exit_task_context(struct task_struct *task, bool exit)
 		perf_event_task(task, ctx, 0);
 
 	list_for_each_entry_safe(child_event, next, &ctx->event_list, event_entry)
-		perf_event_exit_event(child_event, ctx, false);
+		perf_event_exit_event(child_event, ctx, exit ? task : NULL, false);
 
 	mutex_unlock(&ctx->mutex);
 
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index f11ceb8be8c419..d546d32390a81d 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -79,7 +79,7 @@ struct uprobe {
 	 * The generic code assumes that it has two members of unknown type
 	 * owned by the arch-specific code:
 	 *
-	 * 	insn -	copy_insn() saves the original instruction here for
+	 *	insn -	copy_insn() saves the original instruction here for
 	 *		arch_uprobe_analyze_insn().
 	 *
 	 *	ixol -	potentially modified instruction to execute out of
@@ -107,8 +107,8 @@ static LIST_HEAD(delayed_uprobe_list);
  * allocated.
  */
 struct xol_area {
-	wait_queue_head_t 		wq;		/* if all slots are busy */
-	unsigned long 			*bitmap;	/* 0 = free slot */
+	wait_queue_head_t		wq;		/* if all slots are busy */
+	unsigned long			*bitmap;	/* 0 = free slot */
 
 	struct page			*page;
 	/*
@@ -116,7 +116,7 @@ struct xol_area {
 	 * itself.  The probed process or a naughty kernel module could make
 	 * the vma go away, and we must handle that reasonably gracefully.
 	 */
-	unsigned long 			vaddr;		/* Page(s) of instruction slots */
+	unsigned long			vaddr;		/* Page(s) of instruction slots */
 };
 
 static void uprobe_warn(struct task_struct *t, const char *msg)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0bb29316b4362c..349ae7979da0e3 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1414,7 +1414,7 @@ setup_irq_thread(struct irqaction *new, unsigned int irq, bool secondary)
 	 * Ensure the thread adjusts the affinity once it reaches the
 	 * thread function.
 	 */
-	new->thread_flags = BIT(IRQTF_AFFINITY);
+	set_bit(IRQTF_AFFINITY, &new->thread_flags);
 
 	return 0;
 }
@@ -2470,6 +2470,9 @@ int setup_percpu_irq(unsigned int irq, struct irqaction *act)
 	if (retval < 0)
 		return retval;
 
+	if (!act->affinity)
+		act->affinity = cpu_online_mask;
+
 	retval = __setup_irq(irq, desc, act);
 
 	if (retval)
diff --git a/lib/bug.c b/lib/bug.c
index edd9041f89f3aa..623c467a8b76c7 100644
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -173,6 +173,9 @@ struct bug_entry *find_bug(unsigned long bugaddr)
 	return module_find_bug(bugaddr);
 }
 
+__diag_push();
+__diag_ignore(GCC, all, "-Wsuggest-attribute=format",
+	      "Not a valid __printf() conversion candidate.");
 static void __warn_printf(const char *fmt, struct pt_regs *regs)
 {
 	if (!fmt)
@@ -192,6 +195,7 @@ static void __warn_printf(const char *fmt, struct pt_regs *regs)
 
 	printk("%s", fmt);
 }
+__diag_pop();
 
 static enum bug_trap_type __report_bug(struct bug_entry *bug, unsigned long bugaddr, struct pt_regs *regs)
 {
@@ -262,7 +266,7 @@ enum bug_trap_type report_bug_entry(struct bug_entry *bug, struct pt_regs *regs)
 	bool rcu = false;
 
 	rcu = warn_rcu_enter();
-	ret = __report_bug(bug, 0, regs);
+	ret = __report_bug(bug, bug_addr(bug), regs);
 	warn_rcu_exit(rcu);
 
 	return ret;