Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Simple cases of overlapping changes in the packet scheduler.

Must easier to resolve this time.

Which probably means that I screwed it up somehow.

Signed-off-by: David S. Miller <davem@davemloft.net>

.mailmap

@@ -15,6 +15,7 @@ Adriana Reus <adi.reus@gmail.com> <adriana.reus@intel.com>
 Alan Cox <alan@lxorguk.ukuu.org.uk>
 Alan Cox <root@hraefn.swansea.linux.org.uk>
 Aleksey Gorelov <aleksey_gorelov@phoenix.com>
+Aleksandar Markovic <aleksandar.markovic@mips.com> <aleksandar.markovic@imgtec.com>
 Al Viro <viro@ftp.linux.org.uk>
 Al Viro <viro@zenIV.linux.org.uk>
 Andreas Herrmann <aherrman@de.ibm.com>
@@ -101,6 +102,7 @@ Leonid I Ananiev <leonid.i.ananiev@intel.com>
 Linas Vepstas <linas@austin.ibm.com>
 Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@web.de>
 Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@ascom.ch>
+Marcin Nowakowski <marcin.nowakowski@mips.com> <marcin.nowakowski@imgtec.com>
 Mark Brown <broonie@sirena.org.uk>
 Martin Kepplinger <martink@posteo.de> <martin.kepplinger@theobroma-systems.com>
 Martin Kepplinger <martink@posteo.de> <martin.kepplinger@ginzinger.com>
@@ -119,6 +121,7 @@ Matt Redfearn <matt.redfearn@mips.com> <matt.redfearn@imgtec.com>
 Mayuresh Janorkar <mayur@ti.com>
 Michael Buesch <m@bues.ch>
 Michel Dänzer <michel@tungstengraphics.com>
+Miodrag Dinic <miodrag.dinic@mips.com> <miodrag.dinic@imgtec.com>
 Mitesh shah <mshah@teja.com>
 Mohit Kumar <mohit.kumar@st.com> <mohit.kumar.dhaka@gmail.com>
 Morten Welinder <terra@gnome.org>

Documentation/process/kernel-enforcement-statement.rst

@@ -50,8 +50,9 @@ be stronger.
 Except where noted below, we speak only for ourselves, and not for any company
 we might work for today, have in the past, or will in the future.
 
+  - Laura Abbott
   - Bjorn Andersson (Linaro)
-  - Andrea Arcangeli (Red Hat)
+  - Andrea Arcangeli
   - Neil Armstrong
   - Jens Axboe
   - Pablo Neira Ayuso
@@ -60,15 +61,17 @@ we might work for today, have in the past, or will in the future.
   - Felipe Balbi
   - Arnd Bergmann
   - Ard Biesheuvel
-  - Paolo Bonzini (Red Hat)
+  - Tim Bird
+  - Paolo Bonzini
   - Christian Borntraeger
   - Mark Brown (Linaro)
   - Paul Burton
   - Javier Martinez Canillas
   - Rob Clark
   - Jonathan Corbet
+  - Dennis Dalessandro
   - Vivien Didelot (Savoir-faire Linux)
-  - Hans de Goede (Red Hat)
+  - Hans de Goede
   - Mel Gorman (SUSE)
   - Sven Eckelmann
   - Alex Elder (Linaro)
@@ -79,6 +82,7 @@ we might work for today, have in the past, or will in the future.
   - Juergen Gross
   - Shawn Guo
   - Ulf Hansson
+  - Stephen Hemminger (Microsoft)
   - Tejun Heo
   - Rob Herring
   - Masami Hiramatsu
@@ -104,18 +108,21 @@ we might work for today, have in the past, or will in the future.
   - Viresh Kumar
   - Aneesh Kumar K.V
   - Julia Lawall
-  - Doug Ledford (Red Hat)
+  - Doug Ledford
   - Chuck Lever (Oracle)
   - Daniel Lezcano
   - Shaohua Li
-  - Xin Long (Red Hat)
+  - Xin Long
   - Tony Luck
+  - Catalin Marinas (Arm Ltd)
   - Mike Marshall
   - Chris Mason
   - Paul E. McKenney
   - David S. Miller
   - Ingo Molnar
   - Kuninori Morimoto
+  - Trond Myklebust
+  - Martin K. Petersen (Oracle)
   - Borislav Petkov
   - Jiri Pirko
   - Josh Poimboeuf
@@ -124,18 +131,20 @@ we might work for today, have in the past, or will in the future.
   - Joerg Roedel
   - Leon Romanovsky
   - Steven Rostedt (VMware)
-  - Ivan Safonov
+  - Frank Rowand
   - Ivan Safonov
   - Anna Schumaker
   - Jes Sorensen
   - K.Y. Srinivasan
   - Heiko Stuebner
   - Jiri Kosina (SUSE)
+  - Willy Tarreau
   - Dmitry Torokhov
   - Linus Torvalds
   - Thierry Reding
   - Rik van Riel
   - Geert Uytterhoeven (Glider bvba)
+  - Eduardo Valentin (Amazon.com)
   - Daniel Vetter
   - Linus Walleij
   - Richard Weinberger
@@ -145,3 +154,4 @@ we might work for today, have in the past, or will in the future.
   - Masahiro Yamada
   - Wei Yongjun
   - Lv Zheng
+  - Marc Zyngier (Arm Ltd)

MAINTAINERS

@@ -873,7 +873,7 @@ F:	drivers/android/
 F:	drivers/staging/android/
 
 ANDROID GOLDFISH RTC DRIVER
-M:	Miodrag Dinic <miodrag.dinic@imgtec.com>
+M:	Miodrag Dinic <miodrag.dinic@mips.com>
 S:	Supported
 F:	Documentation/devicetree/bindings/rtc/google,goldfish-rtc.txt
 F:	drivers/rtc/rtc-goldfish.c
@@ -7752,6 +7752,11 @@ S:	Maintained
 F:	Documentation/scsi/53c700.txt
 F:	drivers/scsi/53c700*
 
+LEAKING_ADDRESSES
+M:	Tobin C. Harding <me@tobin.cc>
+S:	Maintained
+F:	scripts/leaking_addresses.pl
+
 LED SUBSYSTEM
 M:	Richard Purdie <rpurdie@rpsys.net>
 M:	Jacek Anaszewski <jacek.anaszewski@gmail.com>
@@ -9027,7 +9032,7 @@ F:	drivers/*/*loongson1*
 F:	drivers/*/*/*loongson1*
 
 MIPS RINT INSTRUCTION EMULATION
-M:	Aleksandar Markovic <aleksandar.markovic@imgtec.com>
+M:	Aleksandar Markovic <aleksandar.markovic@mips.com>
 L:	linux-mips@linux-mips.org
 S:	Supported
 F:	arch/mips/math-emu/sp_rint.c
@@ -10692,10 +10697,9 @@ S:	Maintained
 F:	drivers/pinctrl/spear/
 
 PISTACHIO SOC SUPPORT
-M:	James Hartley <james.hartley@imgtec.com>
-M:	Ionela Voinescu <ionela.voinescu@imgtec.com>
+M:	James Hartley <james.hartley@sondrel.com>
 L:	linux-mips@linux-mips.org
-S:	Maintained
+S:	Odd Fixes
 F:	arch/mips/pistachio/
 F:	arch/mips/include/asm/mach-pistachio/
 F:	arch/mips/boot/dts/img/pistachio*

Makefile

@@ -2,7 +2,7 @@
 VERSION = 4
 PATCHLEVEL = 14
 SUBLEVEL = 0
-EXTRAVERSION = -rc7
+EXTRAVERSION = -rc8
 NAME = Fearless Coyote
 
 # *DOCUMENTATION*

arch/arm/Makefile

@@ -44,10 +44,12 @@ endif
 
 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
 KBUILD_CPPFLAGS	+= -mbig-endian
+CHECKFLAGS	+= -D__ARMEB__
 AS		+= -EB
 LD		+= -EB
 else
 KBUILD_CPPFLAGS	+= -mlittle-endian
+CHECKFLAGS	+= -D__ARMEL__
 AS		+= -EL
 LD		+= -EL
 endif

arch/arm/boot/compressed/vmlinux.lds.S

@@ -85,6 +85,15 @@ SECTIONS
 
   _edata = .;
 
+  /*
+   * The image_end section appears after any additional loadable sections
+   * that the linker may decide to insert in the binary image.  Having
+   * this symbol allows further debug in the near future.
+   */
+  .image_end (NOLOAD) : {
+    _edata_real = .;
+  }
+
   _magic_sig = ZIMAGE_MAGIC(0x016f2818);
   _magic_start = ZIMAGE_MAGIC(_start);
   _magic_end = ZIMAGE_MAGIC(_edata);

arch/arm/boot/dts/armada-375.dtsi

@@ -178,9 +178,9 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
-				arm,double-linefill-incr = <1>;
+				arm,double-linefill-incr = <0>;
 				arm,double-linefill-wrap = <0>;
-				arm,double-linefill = <1>;
+				arm,double-linefill = <0>;
 				prefetch-data = <1>;
 			};
 

arch/arm/boot/dts/armada-38x.dtsi

@@ -143,9 +143,9 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
-				arm,double-linefill-incr = <1>;
+				arm,double-linefill-incr = <0>;
 				arm,double-linefill-wrap = <0>;
-				arm,double-linefill = <1>;
+				arm,double-linefill = <0>;
 				prefetch-data = <1>;
 			};
 

arch/arm/boot/dts/armada-39x.dtsi

@@ -111,9 +111,9 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
-				arm,double-linefill-incr = <1>;
+				arm,double-linefill-incr = <0>;
 				arm,double-linefill-wrap = <0>;
-				arm,double-linefill = <1>;
+				arm,double-linefill = <0>;
 				prefetch-data = <1>;
 			};
 

arch/arm/boot/dts/uniphier-ld4.dtsi

@@ -209,7 +209,8 @@
 			interrupts = <0 80 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb0>;
-			clocks = <&mio_clk 7>, <&mio_clk 8>, <&mio_clk 12>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 8>,
+				 <&mio_clk 12>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 8>,
 				 <&mio_rst 12>;
 		};
@@ -221,7 +222,8 @@
 			interrupts = <0 81 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb1>;
-			clocks = <&mio_clk 7>, <&mio_clk 9>, <&mio_clk 13>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 9>,
+				 <&mio_clk 13>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 9>,
 				 <&mio_rst 13>;
 		};
@@ -233,7 +235,8 @@
 			interrupts = <0 82 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb2>;
-			clocks = <&mio_clk 7>, <&mio_clk 10>, <&mio_clk 14>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 10>,
+				 <&mio_clk 14>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 10>,
 				 <&mio_rst 14>;
 		};

arch/arm/boot/dts/uniphier-pro4.dtsi

@@ -241,7 +241,8 @@
 			interrupts = <0 80 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb2>;
-			clocks = <&mio_clk 7>, <&mio_clk 8>, <&mio_clk 12>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 8>,
+				 <&mio_clk 12>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 8>,
 				 <&mio_rst 12>;
 		};
@@ -253,7 +254,8 @@
 			interrupts = <0 81 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb3>;
-			clocks = <&mio_clk 7>, <&mio_clk 9>, <&mio_clk 13>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 9>,
+				 <&mio_clk 13>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 9>,
 				 <&mio_rst 13>;
 		};

arch/arm/boot/dts/uniphier-sld8.dtsi

@@ -209,7 +209,8 @@
 			interrupts = <0 80 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb0>;
-			clocks = <&mio_clk 7>, <&mio_clk 8>, <&mio_clk 12>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 8>,
+				 <&mio_clk 12>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 8>,
 				 <&mio_rst 12>;
 		};
@@ -221,7 +222,8 @@
 			interrupts = <0 81 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb1>;
-			clocks = <&mio_clk 7>, <&mio_clk 9>, <&mio_clk 13>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 9>,
+				 <&mio_clk 13>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 9>,
 				 <&mio_rst 13>;
 		};
@@ -233,7 +235,8 @@
 			interrupts = <0 82 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb2>;
-			clocks = <&mio_clk 7>, <&mio_clk 10>, <&mio_clk 14>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 10>,
+				 <&mio_clk 14>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 10>,
 				 <&mio_rst 14>;
 		};

arch/arm/include/asm/Kbuild

@@ -20,7 +20,6 @@ generic-y += simd.h
 generic-y += sizes.h
 generic-y += timex.h
 generic-y += trace_clock.h
-generic-y += unaligned.h
 
 generated-y += mach-types.h
 generated-y += unistd-nr.h

arch/arm/include/asm/unaligned.h

@@ -0,0 +1,27 @@
+#ifndef __ASM_ARM_UNALIGNED_H
+#define __ASM_ARM_UNALIGNED_H
+
+/*
+ * We generally want to set CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS on ARMv6+,
+ * but we don't want to use linux/unaligned/access_ok.h since that can lead
+ * to traps on unaligned stm/ldm or strd/ldrd.
+ */
+#include <asm/byteorder.h>
+
+#if defined(__LITTLE_ENDIAN)
+# include <linux/unaligned/le_struct.h>
+# include <linux/unaligned/be_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_le
+# define put_unaligned	__put_unaligned_le
+#elif defined(__BIG_ENDIAN)
+# include <linux/unaligned/be_struct.h>
+# include <linux/unaligned/le_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_be
+# define put_unaligned	__put_unaligned_be
+#else
+# error need to define endianess
+#endif
+
+#endif /* __ASM_ARM_UNALIGNED_H */

arch/arm/kvm/emulate.c

@@ -227,7 +227,7 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu)
 	u32 return_offset = (is_thumb) ? 2 : 4;
 
 	kvm_update_psr(vcpu, UND_MODE);
-	*vcpu_reg(vcpu, 14) = *vcpu_pc(vcpu) - return_offset;
+	*vcpu_reg(vcpu, 14) = *vcpu_pc(vcpu) + return_offset;
 
 	/* Branch to exception vector */
 	*vcpu_pc(vcpu) = exc_vector_base(vcpu) + vect_offset;
@@ -239,10 +239,8 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu)
  */
 static void inject_abt(struct kvm_vcpu *vcpu, bool is_pabt, unsigned long addr)
 {
-	unsigned long cpsr = *vcpu_cpsr(vcpu);
-	bool is_thumb = (cpsr & PSR_T_BIT);
 	u32 vect_offset;
-	u32 return_offset = (is_thumb) ? 4 : 0;
+	u32 return_offset = (is_pabt) ? 4 : 8;
 	bool is_lpae;
 
 	kvm_update_psr(vcpu, ABT_MODE);

arch/arm/kvm/hyp/Makefile

@@ -3,7 +3,7 @@
 # Makefile for Kernel-based Virtual Machine module, HYP part
 #
 
-ccflags-y += -fno-stack-protector
+ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING
 
 KVM=../../../../virt/kvm
 

arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi

@@ -299,7 +299,8 @@
 			interrupts = <0 243 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb0>;
-			clocks = <&mio_clk 7>, <&mio_clk 8>, <&mio_clk 12>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 8>,
+				 <&mio_clk 12>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 8>,
 				 <&mio_rst 12>;
 		};
@@ -311,7 +312,8 @@
 			interrupts = <0 244 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb1>;
-			clocks = <&mio_clk 7>, <&mio_clk 9>, <&mio_clk 13>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 9>,
+				 <&mio_clk 13>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 9>,
 				 <&mio_rst 13>;
 		};
@@ -323,7 +325,8 @@
 			interrupts = <0 245 4>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&pinctrl_usb2>;
-			clocks = <&mio_clk 7>, <&mio_clk 10>, <&mio_clk 14>;
+			clocks = <&sys_clk 8>, <&mio_clk 7>, <&mio_clk 10>,
+				 <&mio_clk 14>;
 			resets = <&sys_rst 8>, <&mio_rst 7>, <&mio_rst 10>,
 				 <&mio_rst 14>;
 		};

arch/arm64/kvm/hyp/Makefile

@@ -3,7 +3,7 @@
 # Makefile for Kernel-based Virtual Machine module, HYP part
 #
 
-ccflags-y += -fno-stack-protector
+ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING
 
 KVM=../../../../virt/kvm
 

arch/arm64/kvm/inject_fault.c

@@ -33,12 +33,26 @@
 #define LOWER_EL_AArch64_VECTOR		0x400
 #define LOWER_EL_AArch32_VECTOR		0x600
 
+/*
+ * Table taken from ARMv8 ARM DDI0487B-B, table G1-10.
+ */
+static const u8 return_offsets[8][2] = {
+	[0] = { 0, 0 },		/* Reset, unused */
+	[1] = { 4, 2 },		/* Undefined */
+	[2] = { 0, 0 },		/* SVC, unused */
+	[3] = { 4, 4 },		/* Prefetch abort */
+	[4] = { 8, 8 },		/* Data abort */
+	[5] = { 0, 0 },		/* HVC, unused */
+	[6] = { 4, 4 },		/* IRQ, unused */
+	[7] = { 4, 4 },		/* FIQ, unused */
+};
+
 static void prepare_fault32(struct kvm_vcpu *vcpu, u32 mode, u32 vect_offset)
 {
 	unsigned long cpsr;
 	unsigned long new_spsr_value = *vcpu_cpsr(vcpu);
 	bool is_thumb = (new_spsr_value & COMPAT_PSR_T_BIT);
-	u32 return_offset = (is_thumb) ? 4 : 0;
+	u32 return_offset = return_offsets[vect_offset >> 2][is_thumb];
 	u32 sctlr = vcpu_cp15(vcpu, c1_SCTLR);
 
 	cpsr = mode | COMPAT_PSR_I_BIT;

arch/ia64/include/asm/acpi.h

@@ -112,6 +112,8 @@ static inline void arch_acpi_set_pdc_bits(u32 *buf)
 	buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
 }
 
+#define acpi_unlazy_tlb(x)
+
 #ifdef CONFIG_ACPI_NUMA
 extern cpumask_t early_cpu_possible_map;
 #define for_each_possible_early_cpu(cpu)  \

arch/mips/generic/board-ni169445.its.S

@@ -1,4 +1,4 @@
-{
+/ {
 	images {
 		fdt@ni169445 {
 			description = "NI 169445 device tree";

arch/mips/generic/init.c

@@ -20,7 +20,7 @@
 #include <asm/fw/fw.h>
 #include <asm/irq_cpu.h>
 #include <asm/machine.h>
-#include <asm/mips-cpc.h>
+#include <asm/mips-cps.h>
 #include <asm/prom.h>
 #include <asm/smp-ops.h>
 #include <asm/time.h>

arch/mips/generic/kexec.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 Imagination Technologies
- * Author: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
+ * Author: Marcin Nowakowski <marcin.nowakowski@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the

arch/mips/include/asm/mips-cm.h

@@ -142,8 +142,8 @@ GCR_ACCESSOR_RO(64, 0x000, config)
 GCR_ACCESSOR_RW(64, 0x008, base)
 #define CM_GCR_BASE_GCRBASE			GENMASK_ULL(47, 15)
 #define CM_GCR_BASE_CMDEFTGT			GENMASK(1, 0)
-#define  CM_GCR_BASE_CMDEFTGT_DISABLED		0
-#define  CM_GCR_BASE_CMDEFTGT_MEM		1
+#define  CM_GCR_BASE_CMDEFTGT_MEM		0
+#define  CM_GCR_BASE_CMDEFTGT_RESERVED		1
 #define  CM_GCR_BASE_CMDEFTGT_IOCU0		2
 #define  CM_GCR_BASE_CMDEFTGT_IOCU1		3
 

arch/mips/include/asm/stackframe.h

@@ -199,6 +199,10 @@
 		sll	k0, 3		/* extract cu0 bit */
 		.set	noreorder
 		bltz	k0, 8f
+		 move	k0, sp
+		.if \docfi
+		.cfi_register sp, k0
+		.endif
 #ifdef CONFIG_EVA
 		/*
 		 * Flush interAptiv's Return Prediction Stack (RPS) by writing
@@ -225,10 +229,6 @@
 		MTC0	k0, CP0_ENTRYHI
 #endif
 		.set	reorder
-		 move	k0, sp
-		.if \docfi
-		.cfi_register sp, k0
-		.endif
 		/* Called from user mode, new stack. */
 		get_saved_sp docfi=\docfi tosp=1
 8:

arch/mips/kernel/probes-common.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 Imagination Technologies
- * Author: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
+ * Author: Marcin Nowakowski <marcin.nowakowski@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the

arch/mips/kernel/smp-cmp.c

@@ -19,7 +19,7 @@
 #undef DEBUG
 
 #include <linux/kernel.h>
-#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
 #include <linux/smp.h>
 #include <linux/cpumask.h>
 #include <linux/interrupt.h>
@@ -50,8 +50,8 @@ static void cmp_init_secondary(void)
 
 #ifdef CONFIG_MIPS_MT_SMP
 	if (cpu_has_mipsmt)
-		c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) &
-			TCBIND_CURVPE;
+		cpu_set_vpe_id(c, (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) &
+				  TCBIND_CURVPE);
 #endif
 }
 

arch/mips/kernel/smp-cps.c

@@ -306,7 +306,7 @@ static int cps_boot_secondary(int cpu, struct task_struct *idle)
 	int err;
 
 	/* We don't yet support booting CPUs in other clusters */
-	if (cpu_cluster(&cpu_data[cpu]) != cpu_cluster(&current_cpu_data))
+	if (cpu_cluster(&cpu_data[cpu]) != cpu_cluster(&raw_current_cpu_data))
 		return -ENOSYS;
 
 	vpe_cfg->pc = (unsigned long)&smp_bootstrap;

arch/mips/kernel/smp.c

@@ -42,7 +42,7 @@
 #include <asm/processor.h>
 #include <asm/idle.h>
 #include <asm/r4k-timer.h>
-#include <asm/mips-cpc.h>
+#include <asm/mips-cps.h>
 #include <asm/mmu_context.h>
 #include <asm/time.h>
 #include <asm/setup.h>
@@ -66,6 +66,7 @@ EXPORT_SYMBOL(cpu_sibling_map);
 cpumask_t cpu_core_map[NR_CPUS] __read_mostly;
 EXPORT_SYMBOL(cpu_core_map);
 
+static DECLARE_COMPLETION(cpu_starting);
 static DECLARE_COMPLETION(cpu_running);
 
 /*
@@ -374,6 +375,12 @@ asmlinkage void start_secondary(void)
 	cpumask_set_cpu(cpu, &cpu_coherent_mask);
 	notify_cpu_starting(cpu);
 
+	/* Notify boot CPU that we're starting & ready to sync counters */
+	complete(&cpu_starting);
+
+	synchronise_count_slave(cpu);
+
+	/* The CPU is running and counters synchronised, now mark it online */
 	set_cpu_online(cpu, true);
 
 	set_cpu_sibling_map(cpu);
@@ -381,8 +388,11 @@ asmlinkage void start_secondary(void)
 
 	calculate_cpu_foreign_map();
 
+	/*
+	 * Notify boot CPU that we're up & online and it can safely return
+	 * from __cpu_up
+	 */
 	complete(&cpu_running);
-	synchronise_count_slave(cpu);
 
 	/*
 	 * irq will be enabled in ->smp_finish(), enabling it too early
@@ -445,17 +455,17 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle)
 	if (err)
 		return err;
 
-	/*
-	 * We must check for timeout here, as the CPU will not be marked
-	 * online until the counters are synchronised.
-	 */
-	if (!wait_for_completion_timeout(&cpu_running,
+	/* Wait for CPU to start and be ready to sync counters */
+	if (!wait_for_completion_timeout(&cpu_starting,
 					 msecs_to_jiffies(1000))) {
 		pr_crit("CPU%u: failed to start\n", cpu);
 		return -EIO;
 	}
 
 	synchronise_count_master(cpu);
+
+	/* Wait for CPU to finish startup & mark itself online before return */
+	wait_for_completion(&cpu_running);
 	return 0;
 }
 

arch/mips/mm/uasm-micromips.c

@@ -80,7 +80,7 @@ static const struct insn const insn_table_MM[insn_invalid] = {
 	[insn_jr]	= {M(mm_pool32a_op, 0, 0, 0, mm_jalr_op, mm_pool32axf_op), RS},
 	[insn_lb]	= {M(mm_lb32_op, 0, 0, 0, 0, 0), RT | RS | SIMM},
 	[insn_ld]	= {0, 0},
-	[insn_lh]	= {M(mm_lh32_op, 0, 0, 0, 0, 0), RS | RS | SIMM},
+	[insn_lh]	= {M(mm_lh32_op, 0, 0, 0, 0, 0), RT | RS | SIMM},
 	[insn_ll]	= {M(mm_pool32c_op, 0, 0, (mm_ll_func << 1), 0, 0), RS | RT | SIMM},
 	[insn_lld]	= {0, 0},
 	[insn_lui]	= {M(mm_pool32i_op, mm_lui_op, 0, 0, 0, 0), RS | SIMM},

arch/mips/net/ebpf_jit.c

@@ -1513,7 +1513,7 @@ ld_skb_common:
 		}
 		src = ebpf_to_mips_reg(ctx, insn, src_reg_no_fp);
 		if (src < 0)
-			return dst;
+			return src;
 		if (BPF_MODE(insn->code) == BPF_XADD) {
 			switch (BPF_SIZE(insn->code)) {
 			case BPF_W:

arch/x86/crypto/sha1-mb/sha1_mb_mgr_flush_avx2.S

@@ -157,8 +157,8 @@ LABEL skip_ %I
 .endr
 
 	# Find min length
-	vmovdqa _lens+0*16(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens+0*16(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2     # xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3   # xmm3 has {x,x,D,C}
@@ -178,8 +178,8 @@ LABEL skip_ %I
 	vpsubd  %xmm2, %xmm0, %xmm0
 	vpsubd  %xmm2, %xmm1, %xmm1
 
-	vmovdqa %xmm0, _lens+0*16(state)
-	vmovdqa %xmm1, _lens+1*16(state)
+	vmovdqu %xmm0, _lens+0*16(state)
+	vmovdqu %xmm1, _lens+1*16(state)
 
 	# "state" and "args" are the same address, arg1
 	# len is arg2
@@ -235,8 +235,8 @@ ENTRY(sha1_mb_mgr_get_comp_job_avx2)
 	jc      .return_null
 
 	# Find min length
-	vmovdqa _lens(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2        # xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3   # xmm3 has {x,x,D,C}

arch/x86/crypto/sha256-mb/sha256_mb_mgr_flush_avx2.S

@@ -155,8 +155,8 @@ LABEL skip_ %I
 .endr
 
 	# Find min length
-	vmovdqa _lens+0*16(state), %xmm0
-	vmovdqa _lens+1*16(state), %xmm1
+	vmovdqu _lens+0*16(state), %xmm0
+	vmovdqu _lens+1*16(state), %xmm1
 
 	vpminud %xmm1, %xmm0, %xmm2		# xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3	# xmm3 has {x,x,D,C}
@@ -176,8 +176,8 @@ LABEL skip_ %I
 	vpsubd	%xmm2, %xmm0, %xmm0
 	vpsubd	%xmm2, %xmm1, %xmm1
 
-	vmovdqa	%xmm0, _lens+0*16(state)
-	vmovdqa	%xmm1, _lens+1*16(state)
+	vmovdqu	%xmm0, _lens+0*16(state)
+	vmovdqu	%xmm1, _lens+1*16(state)
 
 	# "state" and "args" are the same address, arg1
 	# len is arg2
@@ -234,8 +234,8 @@ ENTRY(sha256_mb_mgr_get_comp_job_avx2)
 	jc	.return_null
 
 	# Find min length
-	vmovdqa	_lens(state), %xmm0
-	vmovdqa	_lens+1*16(state), %xmm1
+	vmovdqu	_lens(state), %xmm0
+	vmovdqu	_lens+1*16(state), %xmm1
 
 	vpminud	%xmm1, %xmm0, %xmm2		# xmm2 has {D,C,B,A}
 	vpalignr $8, %xmm2, %xmm3, %xmm3	# xmm3 has {x,x,D,C}

arch/x86/include/asm/acpi.h

@@ -150,6 +150,8 @@ static inline void disable_acpi(void) { }
 extern int x86_acpi_numa_init(void);
 #endif /* CONFIG_ACPI_NUMA */
 
+#define acpi_unlazy_tlb(x)	leave_mm(x)
+
 #ifdef CONFIG_ACPI_APEI
 static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
 {

arch/x86/kernel/cpu/mcheck/dev-mcelog.c

@@ -24,14 +24,6 @@ static DEFINE_MUTEX(mce_chrdev_read_mutex);
 static char mce_helper[128];
 static char *mce_helper_argv[2] = { mce_helper, NULL };
 
-#define mce_log_get_idx_check(p) \
-({ \
-	RCU_LOCKDEP_WARN(!rcu_read_lock_sched_held() && \
-			 !lockdep_is_held(&mce_chrdev_read_mutex), \
-			 "suspicious mce_log_get_idx_check() usage"); \
-	smp_load_acquire(&(p)); \
-})
-
 /*
  * Lockless MCE logging infrastructure.
  * This avoids deadlocks on printk locks without having to break locks. Also
@@ -53,43 +45,32 @@ static int dev_mce_log(struct notifier_block *nb, unsigned long val,
 				void *data)
 {
 	struct mce *mce = (struct mce *)data;
-	unsigned int next, entry;
-
-	wmb();
-	for (;;) {
-		entry = mce_log_get_idx_check(mcelog.next);
-		for (;;) {
-
-			/*
-			 * When the buffer fills up discard new entries.
-			 * Assume that the earlier errors are the more
-			 * interesting ones:
-			 */
-			if (entry >= MCE_LOG_LEN) {
-				set_bit(MCE_OVERFLOW,
-					(unsigned long *)&mcelog.flags);
-				return NOTIFY_OK;
-			}
-			/* Old left over entry. Skip: */
-			if (mcelog.entry[entry].finished) {
-				entry++;
-				continue;
-			}
-			break;
-		}
-		smp_rmb();
-		next = entry + 1;
-		if (cmpxchg(&mcelog.next, entry, next) == entry)
-			break;
+	unsigned int entry;
+
+	mutex_lock(&mce_chrdev_read_mutex);
+
+	entry = mcelog.next;
+
+	/*
+	 * When the buffer fills up discard new entries. Assume that the
+	 * earlier errors are the more interesting ones:
+	 */
+	if (entry >= MCE_LOG_LEN) {
+		set_bit(MCE_OVERFLOW, (unsigned long *)&mcelog.flags);
+		goto unlock;
 	}
+
+	mcelog.next = entry + 1;
+
 	memcpy(mcelog.entry + entry, mce, sizeof(struct mce));
-	wmb();
 	mcelog.entry[entry].finished = 1;
-	wmb();
 
 	/* wake processes polling /dev/mcelog */
 	wake_up_interruptible(&mce_chrdev_wait);
 
+unlock:
+	mutex_unlock(&mce_chrdev_read_mutex);
+
 	return NOTIFY_OK;
 }
 
@@ -177,13 +158,6 @@ static int mce_chrdev_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static void collect_tscs(void *data)
-{
-	unsigned long *cpu_tsc = (unsigned long *)data;
-
-	cpu_tsc[smp_processor_id()] = rdtsc();
-}
-
 static int mce_apei_read_done;
 
 /* Collect MCE record of previous boot in persistent storage via APEI ERST. */
@@ -231,14 +205,9 @@ static ssize_t mce_chrdev_read(struct file *filp, char __user *ubuf,
 				size_t usize, loff_t *off)
 {
 	char __user *buf = ubuf;
-	unsigned long *cpu_tsc;
-	unsigned prev, next;
+	unsigned next;
 	int i, err;
 
-	cpu_tsc = kmalloc(nr_cpu_ids * sizeof(long), GFP_KERNEL);
-	if (!cpu_tsc)
-		return -ENOMEM;
-
 	mutex_lock(&mce_chrdev_read_mutex);
 
 	if (!mce_apei_read_done) {
@@ -247,65 +216,29 @@ static ssize_t mce_chrdev_read(struct file *filp, char __user *ubuf,
 			goto out;
 	}
 
-	next = mce_log_get_idx_check(mcelog.next);
-
 	/* Only supports full reads right now */
 	err = -EINVAL;
 	if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce))
 		goto out;
 
+	next = mcelog.next;
 	err = 0;
-	prev = 0;
-	do {
-		for (i = prev; i < next; i++) {
-			unsigned long start = jiffies;
-			struct mce *m = &mcelog.entry[i];
-
-			while (!m->finished) {
-				if (time_after_eq(jiffies, start + 2)) {
-					memset(m, 0, sizeof(*m));
-					goto timeout;
-				}
-				cpu_relax();
-			}
-			smp_rmb();
-			err |= copy_to_user(buf, m, sizeof(*m));
-			buf += sizeof(*m);
-timeout:
-			;
-		}
-
-		memset(mcelog.entry + prev, 0,
-		       (next - prev) * sizeof(struct mce));
-		prev = next;
-		next = cmpxchg(&mcelog.next, prev, 0);
-	} while (next != prev);
-
-	synchronize_sched();
 
-	/*
-	 * Collect entries that were still getting written before the
-	 * synchronize.
-	 */
-	on_each_cpu(collect_tscs, cpu_tsc, 1);
-
-	for (i = next; i < MCE_LOG_LEN; i++) {
+	for (i = 0; i < next; i++) {
 		struct mce *m = &mcelog.entry[i];
 
-		if (m->finished && m->tsc < cpu_tsc[m->cpu]) {
-			err |= copy_to_user(buf, m, sizeof(*m));
-			smp_rmb();
-			buf += sizeof(*m);
-			memset(m, 0, sizeof(*m));
-		}
+		err |= copy_to_user(buf, m, sizeof(*m));
+		buf += sizeof(*m);
 	}
 
+	memset(mcelog.entry, 0, next * sizeof(struct mce));
+	mcelog.next = 0;
+
 	if (err)
 		err = -EFAULT;
 
 out:
 	mutex_unlock(&mce_chrdev_read_mutex);
-	kfree(cpu_tsc);
 
 	return err ? err : buf - ubuf;
 }

arch/x86/kernel/kvmclock.c

@@ -79,7 +79,7 @@ static void kvm_get_wallclock(struct timespec *now)
 
 static int kvm_set_wallclock(const struct timespec *now)
 {
-	return -1;
+	return -ENODEV;
 }
 
 static u64 kvm_clock_read(void)

arch/x86/kernel/module.c

@@ -172,19 +172,27 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
 		case R_X86_64_NONE:
 			break;
 		case R_X86_64_64:
+			if (*(u64 *)loc != 0)
+				goto invalid_relocation;
 			*(u64 *)loc = val;
 			break;
 		case R_X86_64_32:
+			if (*(u32 *)loc != 0)
+				goto invalid_relocation;
 			*(u32 *)loc = val;
 			if (val != *(u32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_32S:
+			if (*(s32 *)loc != 0)
+				goto invalid_relocation;
 			*(s32 *)loc = val;
 			if ((s64)val != *(s32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_PC32:
+			if (*(u32 *)loc != 0)
+				goto invalid_relocation;
 			val -= (u64)loc;
 			*(u32 *)loc = val;
 #if 0
@@ -200,6 +208,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
 	}
 	return 0;
 
+invalid_relocation:
+	pr_err("x86/modules: Skipping invalid relocation target, existing value is nonzero for type %d, loc %p, val %Lx\n",
+	       (int)ELF64_R_TYPE(rel[i].r_info), loc, val);
+	return -ENOEXEC;
+
 overflow:
 	pr_err("overflow in relocation type %d val %Lx\n",
 	       (int)ELF64_R_TYPE(rel[i].r_info), val);

arch/x86/kvm/lapic.c

@@ -1992,6 +1992,11 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
 				vcpu->arch.apic_base | MSR_IA32_APICBASE_BSP);
 	vcpu->arch.pv_eoi.msr_val = 0;
 	apic_update_ppr(apic);
+	if (vcpu->arch.apicv_active) {
+		kvm_x86_ops->apicv_post_state_restore(vcpu);
+		kvm_x86_ops->hwapic_irr_update(vcpu, -1);
+		kvm_x86_ops->hwapic_isr_update(vcpu, -1);
+	}
 
 	vcpu->arch.apic_arb_prio = 0;
 	vcpu->arch.apic_attention = 0;

arch/x86/kvm/vmx.c

@@ -5619,9 +5619,6 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 
 	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
 
-	if (kvm_vcpu_apicv_active(vcpu))
-		memset(&vmx->pi_desc, 0, sizeof(struct pi_desc));
-
 	if (vmx->vpid != 0)
 		vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
 

arch/x86/mm/mem_encrypt.c

@@ -40,7 +40,7 @@ static char sme_cmdline_off[] __initdata = "off";
  * section is later cleared.
  */
 u64 sme_me_mask __section(.data) = 0;
-EXPORT_SYMBOL_GPL(sme_me_mask);
+EXPORT_SYMBOL(sme_me_mask);
 
 /* Buffer used for early in-place encryption by BSP, no locking needed */
 static char sme_early_buffer[PAGE_SIZE] __aligned(PAGE_SIZE);

arch/x86/mm/tlb.c

@@ -85,6 +85,7 @@ void leave_mm(int cpu)
 
 	switch_mm(NULL, &init_mm, NULL);
 }
+EXPORT_SYMBOL_GPL(leave_mm);
 
 void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	       struct task_struct *tsk)
@@ -195,12 +196,22 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].ctx_id, next->context.ctx_id);
 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].tlb_gen, next_tlb_gen);
 			write_cr3(build_cr3(next, new_asid));
-			trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH,
-					TLB_FLUSH_ALL);
+
+			/*
+			 * NB: This gets called via leave_mm() in the idle path
+			 * where RCU functions differently.  Tracing normally
+			 * uses RCU, so we need to use the _rcuidle variant.
+			 *
+			 * (There is no good reason for this.  The idle code should
+			 *  be rearranged to call this before rcu_idle_enter().)
+			 */
+			trace_tlb_flush_rcuidle(TLB_FLUSH_ON_TASK_SWITCH, TLB_FLUSH_ALL);
 		} else {
 			/* The new ASID is already up to date. */
 			write_cr3(build_cr3_noflush(next, new_asid));
-			trace_tlb_flush(TLB_FLUSH_ON_TASK_SWITCH, 0);
+
+			/* See above wrt _rcuidle. */
+			trace_tlb_flush_rcuidle(TLB_FLUSH_ON_TASK_SWITCH, 0);
 		}
 
 		this_cpu_write(cpu_tlbstate.loaded_mm, next);

crypto/ccm.c

@@ -363,7 +363,7 @@ static int crypto_ccm_decrypt(struct aead_request *req)
 	unsigned int cryptlen = req->cryptlen;
 	u8 *authtag = pctx->auth_tag;
 	u8 *odata = pctx->odata;
-	u8 *iv = req->iv;
+	u8 *iv = pctx->idata;
 	int err;
 
 	cryptlen -= authsize;
@@ -379,6 +379,8 @@ static int crypto_ccm_decrypt(struct aead_request *req)
 	if (req->src != req->dst)
 		dst = pctx->dst;
 
+	memcpy(iv, req->iv, 16);
+
 	skcipher_request_set_tfm(skreq, ctx->ctr);
 	skcipher_request_set_callback(skreq, pctx->flags,
 				      crypto_ccm_decrypt_done, req);

drivers/acpi/processor_idle.c

@@ -710,6 +710,8 @@ static DEFINE_RAW_SPINLOCK(c3_lock);
 static void acpi_idle_enter_bm(struct acpi_processor *pr,
 			       struct acpi_processor_cx *cx, bool timer_bc)
 {
+	acpi_unlazy_tlb(smp_processor_id());
+
 	/*
 	 * Must be done before busmaster disable as we might need to
 	 * access HPET !

drivers/acpi/sleep.c

@@ -160,6 +160,14 @@ static int __init init_nvs_nosave(const struct dmi_system_id *d)
 	return 0;
 }
 
+static bool acpi_sleep_no_lps0;
+
+static int __init init_no_lps0(const struct dmi_system_id *d)
+{
+	acpi_sleep_no_lps0 = true;
+	return 0;
+}
+
 static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
 	{
 	.callback = init_old_suspend_ordering,
@@ -343,6 +351,19 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
 		},
 	},
+	/*
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=196907
+	 * Some Dell XPS13 9360 cannot do suspend-to-idle using the Low Power
+	 * S0 Idle firmware interface.
+	 */
+	{
+	.callback = init_no_lps0,
+	.ident = "Dell XPS13 9360",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
+		},
+	},
 	{},
 };
 
@@ -485,6 +506,7 @@ static void acpi_pm_end(void)
 }
 #else /* !CONFIG_ACPI_SLEEP */
 #define acpi_target_sleep_state	ACPI_STATE_S0
+#define acpi_sleep_no_lps0	(false)
 static inline void acpi_sleep_dmi_check(void) {}
 #endif /* CONFIG_ACPI_SLEEP */
 
@@ -863,6 +885,12 @@ static int lps0_device_attach(struct acpi_device *adev,
 	if (lps0_device_handle)
 		return 0;
 
+	if (acpi_sleep_no_lps0) {
+		acpi_handle_info(adev->handle,
+				 "Low Power S0 Idle interface disabled\n");
+		return 0;
+	}
+
 	if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
 		return 0;
 

drivers/firmware/efi/libstub/Makefile

@@ -34,13 +34,14 @@ lib-y				:= efi-stub-helper.o gop.o secureboot.o
 lib-$(CONFIG_RESET_ATTACK_MITIGATION) += tpm.o
 
 # include the stub's generic dependencies from lib/ when building for ARM/arm64
-arm-deps := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c sort.c
+arm-deps-y := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c
+arm-deps-$(CONFIG_ARM64) += sort.c
 
 $(obj)/lib-%.o: $(srctree)/lib/%.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
 lib-$(CONFIG_EFI_ARMSTUB)	+= arm-stub.o fdt.o string.o random.o \
-				   $(patsubst %.c,lib-%.o,$(arm-deps))
+				   $(patsubst %.c,lib-%.o,$(arm-deps-y))
 
 lib-$(CONFIG_ARM)		+= arm32-stub.o
 lib-$(CONFIG_ARM64)		+= arm64-stub.o
@@ -91,5 +92,4 @@ quiet_cmd_stubcopy = STUBCPY $@
 # explicitly by the decompressor linker script.
 #
 STUBCOPY_FLAGS-$(CONFIG_ARM)	+= --rename-section .data=.data.efistub
-STUBCOPY_RM-$(CONFIG_ARM)	+= -R ___ksymtab+sort -R ___kcrctab+sort
 STUBCOPY_RELOC-$(CONFIG_ARM)	:= R_ARM_ABS

drivers/firmware/efi/libstub/arm-stub.c

@@ -350,7 +350,9 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
 	 * The easiest way to find adjacent regions is to sort the memory map
 	 * before traversing it.
 	 */
-	sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc, NULL);
+	if (IS_ENABLED(CONFIG_ARM64))
+		sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc,
+		     NULL);
 
 	for (l = 0; l < map_size; l += desc_size, prev = in) {
 		u64 paddr, size;
@@ -367,7 +369,8 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
 		 * a 4k page size kernel to kexec a 64k page size kernel and
 		 * vice versa.
 		 */
-		if (!regions_are_adjacent(prev, in) ||
+		if ((IS_ENABLED(CONFIG_ARM64) &&
+		     !regions_are_adjacent(prev, in)) ||
 		    !regions_have_compatible_memory_type_attrs(prev, in)) {
 
 			paddr = round_down(in->phys_addr, SZ_64K);

drivers/ide/ide-cd.c

@@ -867,11 +867,16 @@ static void msf_from_bcd(struct atapi_msf *msf)
 int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
 {
 	struct cdrom_info *info = drive->driver_data;
-	struct cdrom_device_info *cdi = &info->devinfo;
+	struct cdrom_device_info *cdi;
 	unsigned char cmd[BLK_MAX_CDB];
 
 	ide_debug_log(IDE_DBG_FUNC, "enter");
 
+	if (!info)
+		return -EIO;
+
+	cdi = &info->devinfo;
+
 	memset(cmd, 0, BLK_MAX_CDB);
 	cmd[0] = GPCMD_TEST_UNIT_READY;
 

drivers/idle/intel_idle.c

@@ -913,15 +913,16 @@ static __cpuidle int intel_idle(struct cpuidle_device *dev,
 	struct cpuidle_state *state = &drv->states[index];
 	unsigned long eax = flg2MWAIT(state->flags);
 	unsigned int cstate;
+	int cpu = smp_processor_id();
 
 	cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1;
 
 	/*
-	 * NB: if CPUIDLE_FLAG_TLB_FLUSHED is set, this idle transition
-	 * will probably flush the TLB.  It's not guaranteed to flush
-	 * the TLB, though, so it's not clear that we can do anything
-	 * useful with this knowledge.
+	 * leave_mm() to avoid costly and often unnecessary wakeups
+	 * for flushing the user TLB's associated with the active mm.
 	 */
+	if (state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
+		leave_mm(cpu);
 
 	if (!(lapic_timer_reliable_states & (1 << (cstate))))
 		tick_broadcast_enter();

drivers/input/sparse-keymap.c

@@ -255,6 +255,7 @@ void sparse_keymap_report_entry(struct input_dev *dev, const struct key_entry *k
 
 	case KE_VSW:
 		input_report_switch(dev, ke->sw.code, value);
+		input_sync(dev);
 		break;
 	}
 }

drivers/input/touchscreen/ar1021_i2c.c

@@ -117,6 +117,7 @@ static int ar1021_i2c_probe(struct i2c_client *client,
 	input->open = ar1021_i2c_open;
 	input->close = ar1021_i2c_close;
 
+	__set_bit(INPUT_PROP_DIRECT, input->propbit);
 	input_set_capability(input, EV_KEY, BTN_TOUCH);
 	input_set_abs_params(input, ABS_X, 0, AR1021_MAX_X, 0, 0);
 	input_set_abs_params(input, ABS_Y, 0, AR1021_MAX_Y, 0, 0);

drivers/irqchip/irq-mvebu-gicp.c

@@ -194,6 +194,7 @@ static int mvebu_gicp_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	gicp->dev = &pdev->dev;
+	spin_lock_init(&gicp->spi_lock);
 
 	gicp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!gicp->res)

drivers/net/bonding/bond_main.c

@@ -2046,6 +2046,7 @@ static int bond_miimon_inspect(struct bonding *bond)
 
 	bond_for_each_slave_rcu(bond, slave, iter) {
 		slave->new_link = BOND_LINK_NOCHANGE;
+		slave->link_new_state = slave->link;
 
 		link_state = bond_check_dev_link(bond, slave->dev, 0);
 
@@ -3267,7 +3268,7 @@ u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb)
 	hash ^= (hash >> 16);
 	hash ^= (hash >> 8);
 
-	return hash;
+	return hash >> 1;
 }
 
 /*-------------------------- Device entry points ----------------------------*/

drivers/net/ethernet/chelsio/cxgb4/t4fw_version.h

@@ -37,7 +37,7 @@
 
 #define T4FW_VERSION_MAJOR 0x01
 #define T4FW_VERSION_MINOR 0x10
-#define T4FW_VERSION_MICRO 0x2D
+#define T4FW_VERSION_MICRO 0x3F
 #define T4FW_VERSION_BUILD 0x00
 
 #define T4FW_MIN_VERSION_MAJOR 0x01
@@ -46,7 +46,7 @@
 
 #define T5FW_VERSION_MAJOR 0x01
 #define T5FW_VERSION_MINOR 0x10
-#define T5FW_VERSION_MICRO 0x2D
+#define T5FW_VERSION_MICRO 0x3F
 #define T5FW_VERSION_BUILD 0x00
 
 #define T5FW_MIN_VERSION_MAJOR 0x00
@@ -55,7 +55,7 @@
 
 #define T6FW_VERSION_MAJOR 0x01
 #define T6FW_VERSION_MINOR 0x10
-#define T6FW_VERSION_MICRO 0x2D
+#define T6FW_VERSION_MICRO 0x3F
 #define T6FW_VERSION_BUILD 0x00
 
 #define T6FW_MIN_VERSION_MAJOR 0x00

drivers/net/ethernet/marvell/mvpp2.c

@@ -6941,6 +6941,9 @@ static int mvpp2_irqs_init(struct mvpp2_port *port)
 	for (i = 0; i < port->nqvecs; i++) {
 		struct mvpp2_queue_vector *qv = port->qvecs + i;
 
+		if (qv->type == MVPP2_QUEUE_VECTOR_PRIVATE)
+			irq_set_status_flags(qv->irq, IRQ_NO_BALANCING);
+
 		err = request_irq(qv->irq, mvpp2_isr, 0, port->dev->name, qv);
 		if (err)
 			goto err;
@@ -6970,6 +6973,7 @@ static void mvpp2_irqs_deinit(struct mvpp2_port *port)
 		struct mvpp2_queue_vector *qv = port->qvecs + i;
 
 		irq_set_affinity_hint(qv->irq, NULL);
+		irq_clear_status_flags(qv->irq, IRQ_NO_BALANCING);
 		free_irq(qv->irq, qv);
 	}
 }

drivers/net/ethernet/mellanox/mlx5/core/en_fs.c

@@ -365,21 +365,24 @@ static void mlx5e_execute_l2_action(struct mlx5e_priv *priv,
 				    struct mlx5e_l2_hash_node *hn)
 {
 	u8 action = hn->action;
+	u8 mac_addr[ETH_ALEN];
 	int l2_err = 0;
 
+	ether_addr_copy(mac_addr, hn->ai.addr);
+
 	switch (action) {
 	case MLX5E_ACTION_ADD:
 		mlx5e_add_l2_flow_rule(priv, &hn->ai, MLX5E_FULLMATCH);
-		if (!is_multicast_ether_addr(hn->ai.addr)) {
-			l2_err = mlx5_mpfs_add_mac(priv->mdev, hn->ai.addr);
+		if (!is_multicast_ether_addr(mac_addr)) {
+			l2_err = mlx5_mpfs_add_mac(priv->mdev, mac_addr);
 			hn->mpfs = !l2_err;
 		}
 		hn->action = MLX5E_ACTION_NONE;
 		break;
 
 	case MLX5E_ACTION_DEL:
-		if (!is_multicast_ether_addr(hn->ai.addr) && hn->mpfs)
-			l2_err = mlx5_mpfs_del_mac(priv->mdev, hn->ai.addr);
+		if (!is_multicast_ether_addr(mac_addr) && hn->mpfs)
+			l2_err = mlx5_mpfs_del_mac(priv->mdev, mac_addr);
 		mlx5e_del_l2_flow_rule(priv, &hn->ai);
 		mlx5e_del_l2_from_hash(hn);
 		break;
@@ -387,7 +390,7 @@ static void mlx5e_execute_l2_action(struct mlx5e_priv *priv,
 
 	if (l2_err)
 		netdev_warn(priv->netdev, "MPFS, failed to %s mac %pM, err(%d)\n",
-			    action == MLX5E_ACTION_ADD ? "add" : "del", hn->ai.addr, l2_err);
+			    action == MLX5E_ACTION_ADD ? "add" : "del", mac_addr, l2_err);
 }
 
 static void mlx5e_sync_netdev_addr(struct mlx5e_priv *priv)

drivers/net/usb/asix_devices.c

@@ -626,7 +626,7 @@ static int asix_suspend(struct usb_interface *intf, pm_message_t message)
 	struct usbnet *dev = usb_get_intfdata(intf);
 	struct asix_common_private *priv = dev->driver_priv;
 
-	if (priv->suspend)
+	if (priv && priv->suspend)
 		priv->suspend(dev);
 
 	return usbnet_suspend(intf, message);
@@ -678,7 +678,7 @@ static int asix_resume(struct usb_interface *intf)
 	struct usbnet *dev = usb_get_intfdata(intf);
 	struct asix_common_private *priv = dev->driver_priv;
 
-	if (priv->resume)
+	if (priv && priv->resume)
 		priv->resume(dev);
 
 	return usbnet_resume(intf);

drivers/net/usb/cdc_ether.c

@@ -230,7 +230,7 @@ skip:
 			goto bad_desc;
 	}
 
-	if (header.usb_cdc_ether_desc) {
+	if (header.usb_cdc_ether_desc && info->ether->wMaxSegmentSize) {
 		dev->hard_mtu = le16_to_cpu(info->ether->wMaxSegmentSize);
 		/* because of Zaurus, we may be ignoring the host
 		 * side link address we were given.

drivers/net/usb/qmi_wwan.c

@@ -499,6 +499,7 @@ static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 		return 1;
 	}
 	if (rawip) {
+		skb_reset_mac_header(skb);
 		skb->dev = dev->net; /* normally set by eth_type_trans */
 		skb->protocol = proto;
 		return 1;
@@ -681,7 +682,7 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
 	}
 
 	/* errors aren't fatal - we can live with the dynamic address */
-	if (cdc_ether) {
+	if (cdc_ether && cdc_ether->wMaxSegmentSize) {
 		dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
 		usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
 	}

drivers/scsi/scsi_lib.c

@@ -2685,7 +2685,6 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
 
 	}
 	sdev->sdev_state = state;
-	sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 	return 0;
 
  illegal:
@@ -3109,7 +3108,6 @@ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
 	case SDEV_BLOCK:
 	case SDEV_TRANSPORT_OFFLINE:
 		sdev->sdev_state = new_state;
-		sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 		break;
 	case SDEV_CREATED_BLOCK:
 		if (new_state == SDEV_TRANSPORT_OFFLINE ||
@@ -3117,7 +3115,6 @@ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
 			sdev->sdev_state = new_state;
 		else
 			sdev->sdev_state = SDEV_CREATED;
-		sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
 		break;
 	case SDEV_CANCEL:
 	case SDEV_OFFLINE:

drivers/scsi/scsi_transport_srp.c

@@ -556,11 +556,8 @@ int srp_reconnect_rport(struct srp_rport *rport)
 		 */
 		shost_for_each_device(sdev, shost) {
 			mutex_lock(&sdev->state_mutex);
-			if (sdev->sdev_state == SDEV_OFFLINE) {
+			if (sdev->sdev_state == SDEV_OFFLINE)
 				sdev->sdev_state = SDEV_RUNNING;
-				sysfs_notify(&sdev->sdev_gendev.kobj,
-					     NULL, "state");
-			}
 			mutex_unlock(&sdev->state_mutex);
 		}
 	} else if (rport->state == SRP_RPORT_RUNNING) {

include/linux/compiler.h

@@ -191,13 +191,13 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 	asm("%c0:\n\t"							\
 	    ".pushsection .discard.reachable\n\t"			\
 	    ".long %c0b - .\n\t"					\
-	    ".popsection\n\t" : : "i" (__LINE__));			\
+	    ".popsection\n\t" : : "i" (__COUNTER__));			\
 })
 #define annotate_unreachable() ({					\
 	asm("%c0:\n\t"							\
 	    ".pushsection .discard.unreachable\n\t"			\
 	    ".long %c0b - .\n\t"					\
-	    ".popsection\n\t" : : "i" (__LINE__));			\
+	    ".popsection\n\t" : : "i" (__COUNTER__));			\
 })
 #define ASM_UNREACHABLE							\
 	"999:\n\t"							\

include/linux/skbuff.h

@@ -3841,6 +3841,13 @@ static inline void nf_reset_trace(struct sk_buff *skb)
 #endif
 }
 
+static inline void ipvs_reset(struct sk_buff *skb)
+{
+#if IS_ENABLED(CONFIG_IP_VS)
+	skb->ipvs_property = 0;
+#endif
+}
+
 /* Note: This doesn't put any conntrack and bridge info in dst. */
 static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src,
 			     bool copy)

include/net/act_api.h

@@ -14,7 +14,6 @@
 struct tcf_idrinfo {
 	spinlock_t	lock;
 	struct idr	action_idr;
-	struct net	*net;
 };
 
 struct tc_action_ops;
@@ -105,7 +104,7 @@ struct tc_action_net {
 
 static inline
 int tc_action_net_init(struct tc_action_net *tn,
-		       const struct tc_action_ops *ops, struct net *net)
+		       const struct tc_action_ops *ops)
 {
 	int err = 0;
 
@@ -113,7 +112,6 @@ int tc_action_net_init(struct tc_action_net *tn,
 	if (!tn->idrinfo)
 		return -ENOMEM;
 	tn->ops = ops;
-	tn->idrinfo->net = net;
 	spin_lock_init(&tn->idrinfo->lock);
 	idr_init(&tn->idrinfo->action_idr);
 	return err;

include/net/pkt_cls.h

@@ -231,6 +231,7 @@ struct tcf_exts {
 	__u32	type; /* for backward compat(TCA_OLD_COMPAT) */
 	int nr_actions;
 	struct tc_action **actions;
+	struct net *net;
 #endif
 	/* Map to export classifier specific extension TLV types to the
 	 * generic extensions API. Unsupported extensions must be set to 0.
@@ -244,6 +245,7 @@ static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police)
 #ifdef CONFIG_NET_CLS_ACT
 	exts->type = 0;
 	exts->nr_actions = 0;
+	exts->net = NULL;
 	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
 				GFP_KERNEL);
 	if (!exts->actions)
@@ -254,6 +256,28 @@ static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police)
 	return 0;
 }
 
+/* Return false if the netns is being destroyed in cleanup_net(). Callers
+ * need to do cleanup synchronously in this case, otherwise may race with
+ * tc_action_net_exit(). Return true for other cases.
+ */
+static inline bool tcf_exts_get_net(struct tcf_exts *exts)
+{
+#ifdef CONFIG_NET_CLS_ACT
+	exts->net = maybe_get_net(exts->net);
+	return exts->net != NULL;
+#else
+	return true;
+#endif
+}
+
+static inline void tcf_exts_put_net(struct tcf_exts *exts)
+{
+#ifdef CONFIG_NET_CLS_ACT
+	if (exts->net)
+		put_net(exts->net);
+#endif
+}
+
 static inline void tcf_exts_to_list(const struct tcf_exts *exts,
 				    struct list_head *actions)
 {

include/sound/seq_kernel.h

@@ -49,7 +49,8 @@ typedef union snd_seq_timestamp snd_seq_timestamp_t;
 #define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS	200
 
 /* max delivery path length */
-#define SNDRV_SEQ_MAX_HOPS		10
+/* NOTE: this shouldn't be greater than MAX_LOCKDEP_SUBCLASSES */
+#define SNDRV_SEQ_MAX_HOPS		8
 
 /* max size of event size */
 #define SNDRV_SEQ_MAX_EVENT_LEN		0x3fffffff

include/sound/timer.h

@@ -90,6 +90,8 @@ struct snd_timer {
 	struct list_head ack_list_head;
 	struct list_head sack_list_head; /* slow ack list head */
 	struct tasklet_struct task_queue;
+	int max_instances;	/* upper limit of timer instances */
+	int num_instances;	/* current number of timer instances */
 };
 
 struct snd_timer_instance {

include/uapi/sound/asound.h

@@ -94,7 +94,7 @@ enum {
 	SNDRV_HWDEP_IFACE_VX,		/* Digigram VX cards */
 	SNDRV_HWDEP_IFACE_MIXART,	/* Digigram miXart cards */
 	SNDRV_HWDEP_IFACE_USX2Y,	/* Tascam US122, US224 & US428 usb */
-	SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */	
+	SNDRV_HWDEP_IFACE_EMUX_WAVETABLE, /* EmuX wavetable */
 	SNDRV_HWDEP_IFACE_BLUETOOTH,	/* Bluetooth audio */
 	SNDRV_HWDEP_IFACE_USX2Y_PCM,	/* Tascam US122, US224 & US428 rawusb pcm */
 	SNDRV_HWDEP_IFACE_PCXHR,	/* Digigram PCXHR */
@@ -384,7 +384,7 @@ struct snd_mask {
 
 struct snd_pcm_hw_params {
 	unsigned int flags;
-	struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - 
+	struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
 			       SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
 	struct snd_mask mres[5];	/* reserved masks */
 	struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
@@ -857,7 +857,7 @@ typedef int __bitwise snd_ctl_elem_iface_t;
 #define SNDRV_CTL_ELEM_ACCESS_INACTIVE		(1<<8)	/* control does actually nothing, but may be updated */
 #define SNDRV_CTL_ELEM_ACCESS_LOCK		(1<<9)	/* write lock */
 #define SNDRV_CTL_ELEM_ACCESS_OWNER		(1<<10)	/* write lock owner */
-#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK	(1<<28)	/* kernel use a TLV callback */ 
+#define SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK	(1<<28)	/* kernel use a TLV callback */
 #define SNDRV_CTL_ELEM_ACCESS_USER		(1<<29) /* user space element */
 /* bits 30 and 31 are obsoleted (for indirect access) */
 

kernel/events/core.c

@@ -901,9 +901,11 @@ list_update_cgroup_event(struct perf_event *event,
 	cpuctx_entry = &cpuctx->cgrp_cpuctx_entry;
 	/* cpuctx->cgrp is NULL unless a cgroup event is active in this CPU .*/
 	if (add) {
+		struct perf_cgroup *cgrp = perf_cgroup_from_task(current, ctx);
+
 		list_add(cpuctx_entry, this_cpu_ptr(&cgrp_cpuctx_list));
-		if (perf_cgroup_from_task(current, ctx) == event->cgrp)
-			cpuctx->cgrp = event->cgrp;
+		if (cgroup_is_descendant(cgrp->css.cgroup, event->cgrp->css.cgroup))
+			cpuctx->cgrp = cgrp;
 	} else {
 		list_del(cpuctx_entry);
 		cpuctx->cgrp = NULL;

kernel/futex.c

@@ -903,11 +903,27 @@ void exit_pi_state_list(struct task_struct *curr)
 	 */
 	raw_spin_lock_irq(&curr->pi_lock);
 	while (!list_empty(head)) {
-
 		next = head->next;
 		pi_state = list_entry(next, struct futex_pi_state, list);
 		key = pi_state->key;
 		hb = hash_futex(&key);
+
+		/*
+		 * We can race against put_pi_state() removing itself from the
+		 * list (a waiter going away). put_pi_state() will first
+		 * decrement the reference count and then modify the list, so
+		 * its possible to see the list entry but fail this reference
+		 * acquire.
+		 *
+		 * In that case; drop the locks to let put_pi_state() make
+		 * progress and retry the loop.
+		 */
+		if (!atomic_inc_not_zero(&pi_state->refcount)) {
+			raw_spin_unlock_irq(&curr->pi_lock);
+			cpu_relax();
+			raw_spin_lock_irq(&curr->pi_lock);
+			continue;
+		}
 		raw_spin_unlock_irq(&curr->pi_lock);
 
 		spin_lock(&hb->lock);
@@ -918,8 +934,10 @@ void exit_pi_state_list(struct task_struct *curr)
 		 * task still owns the PI-state:
 		 */
 		if (head->next != next) {
+			/* retain curr->pi_lock for the loop invariant */
 			raw_spin_unlock(&pi_state->pi_mutex.wait_lock);
 			spin_unlock(&hb->lock);
+			put_pi_state(pi_state);
 			continue;
 		}
 
@@ -927,9 +945,8 @@ void exit_pi_state_list(struct task_struct *curr)
 		WARN_ON(list_empty(&pi_state->list));
 		list_del_init(&pi_state->list);
 		pi_state->owner = NULL;
-		raw_spin_unlock(&curr->pi_lock);
 
-		get_pi_state(pi_state);
+		raw_spin_unlock(&curr->pi_lock);
 		raw_spin_unlock_irq(&pi_state->pi_mutex.wait_lock);
 		spin_unlock(&hb->lock);
 

kernel/sched/cpufreq_schedutil.c

@@ -649,6 +649,7 @@ static int sugov_start(struct cpufreq_policy *policy)
 		struct sugov_cpu *sg_cpu = &per_cpu(sugov_cpu, cpu);
 
 		memset(sg_cpu, 0, sizeof(*sg_cpu));
+		sg_cpu->cpu = cpu;
 		sg_cpu->sg_policy = sg_policy;
 		sg_cpu->flags = SCHED_CPUFREQ_RT;
 		sg_cpu->iowait_boost_max = policy->cpuinfo.max_freq;
@@ -714,11 +715,6 @@ struct cpufreq_governor *cpufreq_default_governor(void)
 
 static int __init sugov_register(void)
 {
-	int cpu;
-
-	for_each_possible_cpu(cpu)
-		per_cpu(sugov_cpu, cpu).cpu = cpu;
-
 	return cpufreq_register_governor(&schedutil_gov);
 }
 fs_initcall(sugov_register);

kernel/watchdog_hld.c

@@ -13,6 +13,7 @@
 #define pr_fmt(fmt) "NMI watchdog: " fmt
 
 #include <linux/nmi.h>
+#include <linux/atomic.h>
 #include <linux/module.h>
 #include <linux/sched/debug.h>
 
@@ -22,10 +23,11 @@
 static DEFINE_PER_CPU(bool, hard_watchdog_warn);
 static DEFINE_PER_CPU(bool, watchdog_nmi_touch);
 static DEFINE_PER_CPU(struct perf_event *, watchdog_ev);
+static DEFINE_PER_CPU(struct perf_event *, dead_event);
 static struct cpumask dead_events_mask;
 
 static unsigned long hardlockup_allcpu_dumped;
-static unsigned int watchdog_cpus;
+static atomic_t watchdog_cpus = ATOMIC_INIT(0);
 
 void arch_touch_nmi_watchdog(void)
 {
@@ -189,7 +191,8 @@ void hardlockup_detector_perf_enable(void)
 	if (hardlockup_detector_event_create())
 		return;
 
-	if (!watchdog_cpus++)
+	/* use original value for check */
+	if (!atomic_fetch_inc(&watchdog_cpus))
 		pr_info("Enabled. Permanently consumes one hw-PMU counter.\n");
 
 	perf_event_enable(this_cpu_read(watchdog_ev));
@@ -204,8 +207,10 @@ void hardlockup_detector_perf_disable(void)
 
 	if (event) {
 		perf_event_disable(event);
+		this_cpu_write(watchdog_ev, NULL);
+		this_cpu_write(dead_event, event);
 		cpumask_set_cpu(smp_processor_id(), &dead_events_mask);
-		watchdog_cpus--;
+		atomic_dec(&watchdog_cpus);
 	}
 }
 
@@ -219,7 +224,7 @@ void hardlockup_detector_perf_cleanup(void)
 	int cpu;
 
 	for_each_cpu(cpu, &dead_events_mask) {
-		struct perf_event *event = per_cpu(watchdog_ev, cpu);
+		struct perf_event *event = per_cpu(dead_event, cpu);
 
 		/*
 		 * Required because for_each_cpu() reports  unconditionally
@@ -227,7 +232,7 @@ void hardlockup_detector_perf_cleanup(void)
 		 */
 		if (event)
 			perf_event_release_kernel(event);
-		per_cpu(watchdog_ev, cpu) = NULL;
+		per_cpu(dead_event, cpu) = NULL;
 	}
 	cpumask_clear(&dead_events_mask);
 }

kernel/workqueue_internal.h

@@ -10,6 +10,7 @@
 
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
+#include <linux/preempt.h>
 
 struct worker_pool;
 
@@ -60,7 +61,7 @@ struct worker {
  */
 static inline struct worker *current_wq_worker(void)
 {
-	if (current->flags & PF_WQ_WORKER)
+	if (in_task() && (current->flags & PF_WQ_WORKER))
 		return kthread_data(current);
 	return NULL;
 }

lib/asn1_decoder.c

@@ -228,7 +228,7 @@ next_op:
 		hdr = 2;
 
 		/* Extract a tag from the data */
-		if (unlikely(dp >= datalen - 1))
+		if (unlikely(datalen - dp < 2))
 			goto data_overrun_error;
 		tag = data[dp++];
 		if (unlikely((tag & 0x1f) == ASN1_LONG_TAG))
@@ -274,7 +274,7 @@ next_op:
 				int n = len - 0x80;
 				if (unlikely(n > 2))
 					goto length_too_long;
-				if (unlikely(dp >= datalen - n))
+				if (unlikely(n > datalen - dp))
 					goto data_overrun_error;
 				hdr += n;
 				for (len = 0; n > 0; n--) {

net/core/skbuff.c

@@ -4869,6 +4869,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 	if (!xnet)
 		return;
 
+	ipvs_reset(skb);
 	skb_orphan(skb);
 	skb->mark = 0;
 }

net/ipv4/tcp_input.c

@@ -100,7 +100,7 @@ int sysctl_tcp_max_orphans __read_mostly = NR_FILE;
 
 #define FLAG_ACKED		(FLAG_DATA_ACKED|FLAG_SYN_ACKED)
 #define FLAG_NOT_DUP		(FLAG_DATA|FLAG_WIN_UPDATE|FLAG_ACKED)
-#define FLAG_CA_ALERT		(FLAG_DATA_SACKED|FLAG_ECE)
+#define FLAG_CA_ALERT		(FLAG_DATA_SACKED|FLAG_ECE|FLAG_DSACKING_ACK)
 #define FLAG_FORWARD_PROGRESS	(FLAG_ACKED|FLAG_DATA_SACKED)
 
 #define TCP_REMNANT (TCP_FLAG_FIN|TCP_FLAG_URG|TCP_FLAG_SYN|TCP_FLAG_PSH)

net/l2tp/l2tp_ip.c

@@ -123,6 +123,7 @@ static int l2tp_ip_recv(struct sk_buff *skb)
 	unsigned char *ptr, *optr;
 	struct l2tp_session *session;
 	struct l2tp_tunnel *tunnel = NULL;
+	struct iphdr *iph;
 	int length;
 
 	if (!pskb_may_pull(skb, 4))
@@ -178,24 +179,17 @@ pass_up:
 		goto discard;
 
 	tunnel_id = ntohl(*(__be32 *) &skb->data[4]);
-	tunnel = l2tp_tunnel_find(net, tunnel_id);
-	if (tunnel) {
-		sk = tunnel->sock;
-		sock_hold(sk);
-	} else {
-		struct iphdr *iph = (struct iphdr *) skb_network_header(skb);
-
-		read_lock_bh(&l2tp_ip_lock);
-		sk = __l2tp_ip_bind_lookup(net, iph->daddr, iph->saddr,
-					   inet_iif(skb), tunnel_id);
-		if (!sk) {
-			read_unlock_bh(&l2tp_ip_lock);
-			goto discard;
-		}
+	iph = (struct iphdr *)skb_network_header(skb);
 
-		sock_hold(sk);
+	read_lock_bh(&l2tp_ip_lock);
+	sk = __l2tp_ip_bind_lookup(net, iph->daddr, iph->saddr, inet_iif(skb),
+				   tunnel_id);
+	if (!sk) {
 		read_unlock_bh(&l2tp_ip_lock);
+		goto discard;
 	}
+	sock_hold(sk);
+	read_unlock_bh(&l2tp_ip_lock);
 
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_put;

net/l2tp/l2tp_ip6.c

@@ -136,6 +136,7 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
 	unsigned char *ptr, *optr;
 	struct l2tp_session *session;
 	struct l2tp_tunnel *tunnel = NULL;
+	struct ipv6hdr *iph;
 	int length;
 
 	if (!pskb_may_pull(skb, 4))
@@ -192,24 +193,17 @@ pass_up:
 		goto discard;
 
 	tunnel_id = ntohl(*(__be32 *) &skb->data[4]);
-	tunnel = l2tp_tunnel_find(net, tunnel_id);
-	if (tunnel) {
-		sk = tunnel->sock;
-		sock_hold(sk);
-	} else {
-		struct ipv6hdr *iph = ipv6_hdr(skb);
-
-		read_lock_bh(&l2tp_ip6_lock);
-		sk = __l2tp_ip6_bind_lookup(net, &iph->daddr, &iph->saddr,
-					    inet6_iif(skb), tunnel_id);
-		if (!sk) {
-			read_unlock_bh(&l2tp_ip6_lock);
-			goto discard;
-		}
+	iph = ipv6_hdr(skb);
 
-		sock_hold(sk);
+	read_lock_bh(&l2tp_ip6_lock);
+	sk = __l2tp_ip6_bind_lookup(net, &iph->daddr, &iph->saddr,
+				    inet6_iif(skb), tunnel_id);
+	if (!sk) {
 		read_unlock_bh(&l2tp_ip6_lock);
+		goto discard;
 	}
+	sock_hold(sk);
+	read_unlock_bh(&l2tp_ip6_lock);
 
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_put;

net/qrtr/qrtr.c

@@ -1120,7 +1120,7 @@ static int __init qrtr_proto_init(void)
 
 	return 0;
 }
-module_init(qrtr_proto_init);
+postcore_initcall(qrtr_proto_init);
 
 static void __exit qrtr_proto_fini(void)
 {

net/sched/act_api.c

@@ -80,7 +80,6 @@ static void tcf_idr_remove(struct tcf_idrinfo *idrinfo, struct tc_action *p)
 	spin_lock_bh(&idrinfo->lock);
 	idr_remove_ext(&idrinfo->action_idr, p->tcfa_index);
 	spin_unlock_bh(&idrinfo->lock);
-	put_net(idrinfo->net);
 	gen_kill_estimator(&p->tcfa_rate_est);
 	free_tcf(p);
 }
@@ -339,7 +338,6 @@ err3:
 	p->idrinfo = idrinfo;
 	p->ops = ops;
 	INIT_LIST_HEAD(&p->list);
-	get_net(idrinfo->net);
 	*a = p;
 	return 0;
 }

net/sched/act_bpf.c

@@ -398,7 +398,7 @@ static __net_init int bpf_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, bpf_net_id);
 
-	return tc_action_net_init(tn, &act_bpf_ops, net);
+	return tc_action_net_init(tn, &act_bpf_ops);
 }
 
 static void __net_exit bpf_exit_net(struct net *net)

net/sched/act_connmark.c

@@ -206,7 +206,7 @@ static __net_init int connmark_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, connmark_net_id);
 
-	return tc_action_net_init(tn, &act_connmark_ops, net);
+	return tc_action_net_init(tn, &act_connmark_ops);
 }
 
 static void __net_exit connmark_exit_net(struct net *net)

net/sched/act_csum.c

@@ -626,7 +626,7 @@ static __net_init int csum_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, csum_net_id);
 
-	return tc_action_net_init(tn, &act_csum_ops, net);
+	return tc_action_net_init(tn, &act_csum_ops);
 }
 
 static void __net_exit csum_exit_net(struct net *net)

net/sched/act_gact.c

@@ -232,7 +232,7 @@ static __net_init int gact_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, gact_net_id);
 
-	return tc_action_net_init(tn, &act_gact_ops, net);
+	return tc_action_net_init(tn, &act_gact_ops);
 }
 
 static void __net_exit gact_exit_net(struct net *net)

net/sched/act_ife.c

@@ -855,7 +855,7 @@ static __net_init int ife_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, ife_net_id);
 
-	return tc_action_net_init(tn, &act_ife_ops, net);
+	return tc_action_net_init(tn, &act_ife_ops);
 }
 
 static void __net_exit ife_exit_net(struct net *net)

net/sched/act_ipt.c

@@ -334,7 +334,7 @@ static __net_init int ipt_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, ipt_net_id);
 
-	return tc_action_net_init(tn, &act_ipt_ops, net);
+	return tc_action_net_init(tn, &act_ipt_ops);
 }
 
 static void __net_exit ipt_exit_net(struct net *net)
@@ -384,7 +384,7 @@ static __net_init int xt_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, xt_net_id);
 
-	return tc_action_net_init(tn, &act_xt_ops, net);
+	return tc_action_net_init(tn, &act_xt_ops);
 }
 
 static void __net_exit xt_exit_net(struct net *net)

net/sched/act_mirred.c

@@ -340,7 +340,7 @@ static __net_init int mirred_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, mirred_net_id);
 
-	return tc_action_net_init(tn, &act_mirred_ops, net);
+	return tc_action_net_init(tn, &act_mirred_ops);
 }
 
 static void __net_exit mirred_exit_net(struct net *net)

net/sched/act_nat.c

@@ -307,7 +307,7 @@ static __net_init int nat_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, nat_net_id);
 
-	return tc_action_net_init(tn, &act_nat_ops, net);
+	return tc_action_net_init(tn, &act_nat_ops);
 }
 
 static void __net_exit nat_exit_net(struct net *net)

net/sched/act_pedit.c

@@ -450,7 +450,7 @@ static __net_init int pedit_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, pedit_net_id);
 
-	return tc_action_net_init(tn, &act_pedit_ops, net);
+	return tc_action_net_init(tn, &act_pedit_ops);
 }
 
 static void __net_exit pedit_exit_net(struct net *net)

net/sched/act_police.c

@@ -331,7 +331,7 @@ static __net_init int police_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, police_net_id);
 
-	return tc_action_net_init(tn, &act_police_ops, net);
+	return tc_action_net_init(tn, &act_police_ops);
 }
 
 static void __net_exit police_exit_net(struct net *net)

net/sched/act_sample.c

@@ -240,7 +240,7 @@ static __net_init int sample_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, sample_net_id);
 
-	return tc_action_net_init(tn, &act_sample_ops, net);
+	return tc_action_net_init(tn, &act_sample_ops);
 }
 
 static void __net_exit sample_exit_net(struct net *net)

net/sched/act_simple.c

@@ -201,7 +201,7 @@ static __net_init int simp_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, simp_net_id);
 
-	return tc_action_net_init(tn, &act_simp_ops, net);
+	return tc_action_net_init(tn, &act_simp_ops);
 }
 
 static void __net_exit simp_exit_net(struct net *net)

net/sched/act_skbedit.c

@@ -238,7 +238,7 @@ static __net_init int skbedit_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, skbedit_net_id);
 
-	return tc_action_net_init(tn, &act_skbedit_ops, net);
+	return tc_action_net_init(tn, &act_skbedit_ops);
 }
 
 static void __net_exit skbedit_exit_net(struct net *net)

net/sched/act_skbmod.c

@@ -263,7 +263,7 @@ static __net_init int skbmod_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, skbmod_net_id);
 
-	return tc_action_net_init(tn, &act_skbmod_ops, net);
+	return tc_action_net_init(tn, &act_skbmod_ops);
 }
 
 static void __net_exit skbmod_exit_net(struct net *net)

net/sched/act_tunnel_key.c

@@ -322,7 +322,7 @@ static __net_init int tunnel_key_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, tunnel_key_net_id);
 
-	return tc_action_net_init(tn, &act_tunnel_key_ops, net);
+	return tc_action_net_init(tn, &act_tunnel_key_ops);
 }
 
 static void __net_exit tunnel_key_exit_net(struct net *net)

net/sched/act_vlan.c

@@ -269,7 +269,7 @@ static __net_init int vlan_init_net(struct net *net)
 {
 	struct tc_action_net *tn = net_generic(net, vlan_net_id);
 
-	return tc_action_net_init(tn, &act_vlan_ops, net);
+	return tc_action_net_init(tn, &act_vlan_ops);
 }
 
 static void __net_exit vlan_exit_net(struct net *net)

net/sched/cls_api.c

@@ -1110,6 +1110,7 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
 				exts->actions[i++] = act;
 			exts->nr_actions = i;
 		}
+		exts->net = net;
 	}
 #else
 	if ((exts->action && tb[exts->action]) ||

net/sched/cls_basic.c

@@ -87,16 +87,21 @@ static int basic_init(struct tcf_proto *tp)
 	return 0;
 }
 
+static void __basic_delete_filter(struct basic_filter *f)
+{
+	tcf_exts_destroy(&f->exts);
+	tcf_em_tree_destroy(&f->ematches);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void basic_delete_filter_work(struct work_struct *work)
 {
 	struct basic_filter *f = container_of(work, struct basic_filter, work);
 
 	rtnl_lock();
-	tcf_exts_destroy(&f->exts);
-	tcf_em_tree_destroy(&f->ematches);
+	__basic_delete_filter(f);
 	rtnl_unlock();
-
-	kfree(f);
 }
 
 static void basic_delete_filter(struct rcu_head *head)
@@ -116,7 +121,10 @@ static void basic_destroy(struct tcf_proto *tp)
 		list_del_rcu(&f->link);
 		tcf_unbind_filter(tp, &f->res);
 		idr_remove_ext(&head->handle_idr, f->handle);
-		call_rcu(&f->rcu, basic_delete_filter);
+		if (tcf_exts_get_net(&f->exts))
+			call_rcu(&f->rcu, basic_delete_filter);
+		else
+			__basic_delete_filter(f);
 	}
 	idr_destroy(&head->handle_idr);
 	kfree_rcu(head, rcu);
@@ -130,6 +138,7 @@ static int basic_delete(struct tcf_proto *tp, void *arg, bool *last)
 	list_del_rcu(&f->link);
 	tcf_unbind_filter(tp, &f->res);
 	idr_remove_ext(&head->handle_idr, f->handle);
+	tcf_exts_get_net(&f->exts);
 	call_rcu(&f->rcu, basic_delete_filter);
 	*last = list_empty(&head->flist);
 	return 0;
@@ -225,6 +234,7 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
 		idr_replace_ext(&head->handle_idr, fnew, fnew->handle);
 		list_replace_rcu(&fold->link, &fnew->link);
 		tcf_unbind_filter(tp, &fold->res);
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, basic_delete_filter);
 	} else {
 		list_add_rcu(&fnew->link, &head->flist);

net/sched/cls_bpf.c

@@ -261,6 +261,7 @@ static int cls_bpf_init(struct tcf_proto *tp)
 static void __cls_bpf_delete_prog(struct cls_bpf_prog *prog)
 {
 	tcf_exts_destroy(&prog->exts);
+	tcf_exts_put_net(&prog->exts);
 
 	if (cls_bpf_is_ebpf(prog))
 		bpf_prog_put(prog->filter);
@@ -297,7 +298,10 @@ static void __cls_bpf_delete(struct tcf_proto *tp, struct cls_bpf_prog *prog)
 	cls_bpf_stop_offload(tp, prog);
 	list_del_rcu(&prog->link);
 	tcf_unbind_filter(tp, &prog->res);
-	call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
+	if (tcf_exts_get_net(&prog->exts))
+		call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
+	else
+		__cls_bpf_delete_prog(prog);
 }
 
 static int cls_bpf_delete(struct tcf_proto *tp, void *arg, bool *last)
@@ -526,6 +530,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
 		idr_replace_ext(&head->handle_idr, prog, handle);
 		list_replace_rcu(&oldprog->link, &prog->link);
 		tcf_unbind_filter(tp, &oldprog->res);
+		tcf_exts_get_net(&oldprog->exts);
 		call_rcu(&oldprog->rcu, cls_bpf_delete_prog_rcu);
 	} else {
 		list_add_rcu(&prog->link, &head->plist);

net/sched/cls_cgroup.c

@@ -60,15 +60,21 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
 	[TCA_CGROUP_EMATCHES]	= { .type = NLA_NESTED },
 };
 
+static void __cls_cgroup_destroy(struct cls_cgroup_head *head)
+{
+	tcf_exts_destroy(&head->exts);
+	tcf_em_tree_destroy(&head->ematches);
+	tcf_exts_put_net(&head->exts);
+	kfree(head);
+}
+
 static void cls_cgroup_destroy_work(struct work_struct *work)
 {
 	struct cls_cgroup_head *head = container_of(work,
 						    struct cls_cgroup_head,
 						    work);
 	rtnl_lock();
-	tcf_exts_destroy(&head->exts);
-	tcf_em_tree_destroy(&head->ematches);
-	kfree(head);
+	__cls_cgroup_destroy(head);
 	rtnl_unlock();
 }
 
@@ -124,8 +130,10 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
 		goto errout;
 
 	rcu_assign_pointer(tp->root, new);
-	if (head)
+	if (head) {
+		tcf_exts_get_net(&head->exts);
 		call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+	}
 	return 0;
 errout:
 	tcf_exts_destroy(&new->exts);
@@ -138,8 +146,12 @@ static void cls_cgroup_destroy(struct tcf_proto *tp)
 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
 
 	/* Head can still be NULL due to cls_cgroup_init(). */
-	if (head)
-		call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+	if (head) {
+		if (tcf_exts_get_net(&head->exts))
+			call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+		else
+			__cls_cgroup_destroy(head);
+	}
 }
 
 static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last)

net/sched/cls_flow.c

@@ -372,15 +372,21 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = {
 	[TCA_FLOW_PERTURB]	= { .type = NLA_U32 },
 };
 
-static void flow_destroy_filter_work(struct work_struct *work)
+static void __flow_destroy_filter(struct flow_filter *f)
 {
-	struct flow_filter *f = container_of(work, struct flow_filter, work);
-
-	rtnl_lock();
 	del_timer_sync(&f->perturb_timer);
 	tcf_exts_destroy(&f->exts);
 	tcf_em_tree_destroy(&f->ematches);
+	tcf_exts_put_net(&f->exts);
 	kfree(f);
+}
+
+static void flow_destroy_filter_work(struct work_struct *work)
+{
+	struct flow_filter *f = container_of(work, struct flow_filter, work);
+
+	rtnl_lock();
+	__flow_destroy_filter(f);
 	rtnl_unlock();
 }
 
@@ -554,8 +560,10 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
 
 	*arg = fnew;
 
-	if (fold)
+	if (fold) {
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, flow_destroy_filter);
+	}
 	return 0;
 
 err2:
@@ -572,6 +580,7 @@ static int flow_delete(struct tcf_proto *tp, void *arg, bool *last)
 	struct flow_filter *f = arg;
 
 	list_del_rcu(&f->list);
+	tcf_exts_get_net(&f->exts);
 	call_rcu(&f->rcu, flow_destroy_filter);
 	*last = list_empty(&head->filters);
 	return 0;
@@ -596,7 +605,10 @@ static void flow_destroy(struct tcf_proto *tp)
 
 	list_for_each_entry_safe(f, next, &head->filters, list) {
 		list_del_rcu(&f->list);
-		call_rcu(&f->rcu, flow_destroy_filter);
+		if (tcf_exts_get_net(&f->exts))
+			call_rcu(&f->rcu, flow_destroy_filter);
+		else
+			__flow_destroy_filter(f);
 	}
 	kfree_rcu(head, rcu);
 }