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SubjectRe: Linux 4.9.87
diff --git a/Makefile b/Makefile
index e918d25e95bb..3043937a65d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 86
+SUBLEVEL = 87
EXTRAVERSION =
NAME = Roaring Lionus

diff --git a/arch/arm/boot/dts/logicpd-som-lv.dtsi b/arch/arm/boot/dts/logicpd-som-lv.dtsi
index 4f2c5ec75714..e262fa9ef334 100644
--- a/arch/arm/boot/dts/logicpd-som-lv.dtsi
+++ b/arch/arm/boot/dts/logicpd-som-lv.dtsi
@@ -97,6 +97,8 @@
};

&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
clock-frequency = <2600000>;

twl: twl@48 {
@@ -215,7 +217,12 @@
>;
};

-
+ i2c1_pins: pinmux_i2c1_pins {
+ pinctrl-single,pins = <
+ OMAP3_CORE1_IOPAD(0x21ba, PIN_INPUT | MUX_MODE0) /* i2c1_scl.i2c1_scl */
+ OMAP3_CORE1_IOPAD(0x21bc, PIN_INPUT | MUX_MODE0) /* i2c1_sda.i2c1_sda */
+ >;
+ };
};

&omap3_pmx_wkup {
diff --git a/arch/arm/boot/dts/logicpd-torpedo-som.dtsi b/arch/arm/boot/dts/logicpd-torpedo-som.dtsi
index efe53998c961..08f0a35dc0d1 100644
--- a/arch/arm/boot/dts/logicpd-torpedo-som.dtsi
+++ b/arch/arm/boot/dts/logicpd-torpedo-som.dtsi
@@ -100,6 +100,8 @@
};

&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
clock-frequency = <2600000>;

twl: twl@48 {
@@ -207,6 +209,12 @@
OMAP3_CORE1_IOPAD(0x21b8, PIN_INPUT | MUX_MODE0) /* hsusb0_data7.hsusb0_data7 */
>;
};
+ i2c1_pins: pinmux_i2c1_pins {
+ pinctrl-single,pins = <
+ OMAP3_CORE1_IOPAD(0x21ba, PIN_INPUT | MUX_MODE0) /* i2c1_scl.i2c1_scl */
+ OMAP3_CORE1_IOPAD(0x21bc, PIN_INPUT | MUX_MODE0) /* i2c1_sda.i2c1_sda */
+ >;
+ };
};

&uart2 {
diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile
index 92eab1d51785..61049216e4d5 100644
--- a/arch/arm/kvm/hyp/Makefile
+++ b/arch/arm/kvm/hyp/Makefile
@@ -6,6 +6,8 @@ ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING

KVM=../../../../virt/kvm

+CFLAGS_ARMV7VE :=$(call cc-option, -march=armv7ve)
+
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v2-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v3-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/timer-sr.o
@@ -14,7 +16,10 @@ obj-$(CONFIG_KVM_ARM_HOST) += tlb.o
obj-$(CONFIG_KVM_ARM_HOST) += cp15-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += vfp.o
obj-$(CONFIG_KVM_ARM_HOST) += banked-sr.o
+CFLAGS_banked-sr.o += $(CFLAGS_ARMV7VE)
+
obj-$(CONFIG_KVM_ARM_HOST) += entry.o
obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o
obj-$(CONFIG_KVM_ARM_HOST) += switch.o
+CFLAGS_switch.o += $(CFLAGS_ARMV7VE)
obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o
diff --git a/arch/arm/kvm/hyp/banked-sr.c b/arch/arm/kvm/hyp/banked-sr.c
index 111bda8cdebd..be4b8b0a40ad 100644
--- a/arch/arm/kvm/hyp/banked-sr.c
+++ b/arch/arm/kvm/hyp/banked-sr.c
@@ -20,6 +20,10 @@

#include <asm/kvm_hyp.h>

+/*
+ * gcc before 4.9 doesn't understand -march=armv7ve, so we have to
+ * trick the assembler.
+ */
__asm__(".arch_extension virt");

void __hyp_text __banked_save_state(struct kvm_cpu_context *ctxt)
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index 541647f57192..895c0746fe50 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -42,7 +42,7 @@ config MACH_ARMADA_375
depends on ARCH_MULTI_V7
select ARMADA_370_XP_IRQ
select ARM_ERRATA_720789
- select ARM_ERRATA_753970
+ select PL310_ERRATA_753970
select ARM_GIC
select ARMADA_375_CLK
select HAVE_ARM_SCU
@@ -58,7 +58,7 @@ config MACH_ARMADA_38X
bool "Marvell Armada 380/385 boards"
depends on ARCH_MULTI_V7
select ARM_ERRATA_720789
- select ARM_ERRATA_753970
+ select PL310_ERRATA_753970
select ARM_GIC
select ARMADA_370_XP_IRQ
select ARMADA_38X_CLK
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index d8199e12fb6e..b47a26f4290c 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -234,8 +234,9 @@ static int emit_bpf_tail_call(struct jit_ctx *ctx)
off = offsetof(struct bpf_array, map.max_entries);
emit_a64_mov_i64(tmp, off, ctx);
emit(A64_LDR32(tmp, r2, tmp), ctx);
+ emit(A64_MOV(0, r3, r3), ctx);
emit(A64_CMP(0, r3, tmp), ctx);
- emit(A64_B_(A64_COND_GE, jmp_offset), ctx);
+ emit(A64_B_(A64_COND_CS, jmp_offset), ctx);

/* if (tail_call_cnt > MAX_TAIL_CALL_CNT)
* goto out;
@@ -243,7 +244,7 @@ static int emit_bpf_tail_call(struct jit_ctx *ctx)
*/
emit_a64_mov_i64(tmp, MAX_TAIL_CALL_CNT, ctx);
emit(A64_CMP(1, tcc, tmp), ctx);
- emit(A64_B_(A64_COND_GT, jmp_offset), ctx);
+ emit(A64_B_(A64_COND_HI, jmp_offset), ctx);
emit(A64_ADD_I(1, tcc, tcc, 1), ctx);

/* prog = array->ptrs[index];
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index 1d8c24dc04d4..88290d32b956 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -25,6 +25,7 @@ void flush_user_icache_range_asm(unsigned long, unsigned long);
void flush_kernel_icache_range_asm(unsigned long, unsigned long);
void flush_user_dcache_range_asm(unsigned long, unsigned long);
void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
+void purge_kernel_dcache_range_asm(unsigned long, unsigned long);
void flush_kernel_dcache_page_asm(void *);
void flush_kernel_icache_page(void *);
void flush_user_dcache_range(unsigned long, unsigned long);
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index df757c9675e6..025afe5f17a7 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -464,10 +464,10 @@ EXPORT_SYMBOL(copy_user_page);
int __flush_tlb_range(unsigned long sid, unsigned long start,
unsigned long end)
{
- unsigned long flags, size;
+ unsigned long flags;

- size = (end - start);
- if (size >= parisc_tlb_flush_threshold) {
+ if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
+ end - start >= parisc_tlb_flush_threshold) {
flush_tlb_all();
return 1;
}
@@ -538,13 +538,11 @@ void flush_cache_mm(struct mm_struct *mm)
struct vm_area_struct *vma;
pgd_t *pgd;

- /* Flush the TLB to avoid speculation if coherency is required. */
- if (parisc_requires_coherency())
- flush_tlb_all();
-
/* Flushing the whole cache on each cpu takes forever on
rp3440, etc. So, avoid it if the mm isn't too big. */
- if (mm_total_size(mm) >= parisc_cache_flush_threshold) {
+ if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
+ mm_total_size(mm) >= parisc_cache_flush_threshold) {
+ flush_tlb_all();
flush_cache_all();
return;
}
@@ -552,9 +550,9 @@ void flush_cache_mm(struct mm_struct *mm)
if (mm->context == mfsp(3)) {
for (vma = mm->mmap; vma; vma = vma->vm_next) {
flush_user_dcache_range_asm(vma->vm_start, vma->vm_end);
- if ((vma->vm_flags & VM_EXEC) == 0)
- continue;
- flush_user_icache_range_asm(vma->vm_start, vma->vm_end);
+ if (vma->vm_flags & VM_EXEC)
+ flush_user_icache_range_asm(vma->vm_start, vma->vm_end);
+ flush_tlb_range(vma, vma->vm_start, vma->vm_end);
}
return;
}
@@ -598,14 +596,9 @@ flush_user_icache_range(unsigned long start, unsigned long end)
void flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- BUG_ON(!vma->vm_mm->context);
-
- /* Flush the TLB to avoid speculation if coherency is required. */
- if (parisc_requires_coherency())
+ if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
+ end - start >= parisc_cache_flush_threshold) {
flush_tlb_range(vma, start, end);
-
- if ((end - start) >= parisc_cache_flush_threshold
- || vma->vm_mm->context != mfsp(3)) {
flush_cache_all();
return;
}
@@ -613,6 +606,7 @@ void flush_cache_range(struct vm_area_struct *vma,
flush_user_dcache_range_asm(start, end);
if (vma->vm_flags & VM_EXEC)
flush_user_icache_range_asm(start, end);
+ flush_tlb_range(vma, start, end);
}

void
@@ -621,8 +615,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
BUG_ON(!vma->vm_mm->context);

if (pfn_valid(pfn)) {
- if (parisc_requires_coherency())
- flush_tlb_page(vma, vmaddr);
+ flush_tlb_page(vma, vmaddr);
__flush_cache_page(vma, vmaddr, PFN_PHYS(pfn));
}
}
@@ -630,21 +623,33 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
void flush_kernel_vmap_range(void *vaddr, int size)
{
unsigned long start = (unsigned long)vaddr;
+ unsigned long end = start + size;

- if ((unsigned long)size > parisc_cache_flush_threshold)
+ if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
+ (unsigned long)size >= parisc_cache_flush_threshold) {
+ flush_tlb_kernel_range(start, end);
flush_data_cache();
- else
- flush_kernel_dcache_range_asm(start, start + size);
+ return;
+ }
+
+ flush_kernel_dcache_range_asm(start, end);
+ flush_tlb_kernel_range(start, end);
}
EXPORT_SYMBOL(flush_kernel_vmap_range);

void invalidate_kernel_vmap_range(void *vaddr, int size)
{
unsigned long start = (unsigned long)vaddr;
+ unsigned long end = start + size;

- if ((unsigned long)size > parisc_cache_flush_threshold)
+ if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
+ (unsigned long)size >= parisc_cache_flush_threshold) {
+ flush_tlb_kernel_range(start, end);
flush_data_cache();
- else
- flush_kernel_dcache_range_asm(start, start + size);
+ return;
+ }
+
+ purge_kernel_dcache_range_asm(start, end);
+ flush_tlb_kernel_range(start, end);
}
EXPORT_SYMBOL(invalidate_kernel_vmap_range);
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 2d40c4ff3f69..67b0f7532e83 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -1110,6 +1110,28 @@ ENTRY_CFI(flush_kernel_dcache_range_asm)
.procend
ENDPROC_CFI(flush_kernel_dcache_range_asm)

+ENTRY_CFI(purge_kernel_dcache_range_asm)
+ .proc
+ .callinfo NO_CALLS
+ .entry
+
+ ldil L%dcache_stride, %r1
+ ldw R%dcache_stride(%r1), %r23
+ ldo -1(%r23), %r21
+ ANDCM %r26, %r21, %r26
+
+1: cmpb,COND(<<),n %r26, %r25,1b
+ pdc,m %r23(%r26)
+
+ sync
+ syncdma
+ bv %r0(%r2)
+ nop
+ .exit
+
+ .procend
+ENDPROC_CFI(purge_kernel_dcache_range_asm)
+
ENTRY_CFI(flush_user_icache_range_asm)
.proc
.callinfo NO_CALLS
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 0fe98a567125..be9d968244ad 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -245,6 +245,7 @@ static void bpf_jit_emit_tail_call(u32 *image, struct codegen_context *ctx, u32
* goto out;
*/
PPC_LWZ(b2p[TMP_REG_1], b2p_bpf_array, offsetof(struct bpf_array, map.max_entries));
+ PPC_RLWINM(b2p_index, b2p_index, 0, 0, 31);
PPC_CMPLW(b2p_index, b2p[TMP_REG_1]);
PPC_BCC(COND_GE, out);

diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
index 8b272a08d1a8..e2e09347ee3c 100644
--- a/arch/x86/include/asm/mmu.h
+++ b/arch/x86/include/asm/mmu.h
@@ -3,12 +3,18 @@

#include <linux/spinlock.h>
#include <linux/mutex.h>
+#include <linux/atomic.h>

/*
- * The x86 doesn't have a mmu context, but
- * we put the segment information here.
+ * x86 has arch-specific MMU state beyond what lives in mm_struct.
*/
typedef struct {
+ /*
+ * ctx_id uniquely identifies this mm_struct. A ctx_id will never
+ * be reused, and zero is not a valid ctx_id.
+ */
+ u64 ctx_id;
+
#ifdef CONFIG_MODIFY_LDT_SYSCALL
struct ldt_struct *ldt;
#endif
@@ -33,6 +39,11 @@ typedef struct {
#endif
} mm_context_t;

+#define INIT_MM_CONTEXT(mm) \
+ .context = { \
+ .ctx_id = 1, \
+ }
+
void leave_mm(int cpu);

#endif /* _ASM_X86_MMU_H */
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index d23e35584f15..5a295bb97103 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -12,6 +12,9 @@
#include <asm/tlbflush.h>
#include <asm/paravirt.h>
#include <asm/mpx.h>
+
+extern atomic64_t last_mm_ctx_id;
+
#ifndef CONFIG_PARAVIRT
static inline void paravirt_activate_mm(struct mm_struct *prev,
struct mm_struct *next)
@@ -106,6 +109,8 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
+ mm->context.ctx_id = atomic64_inc_return(&last_mm_ctx_id);
+
#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
if (cpu_feature_enabled(X86_FEATURE_OSPKE)) {
/* pkey 0 is the default and always allocated */
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index 76b058533e47..81a1be326571 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -177,4 +177,41 @@ static inline void indirect_branch_prediction_barrier(void)
}

#endif /* __ASSEMBLY__ */
+
+/*
+ * Below is used in the eBPF JIT compiler and emits the byte sequence
+ * for the following assembly:
+ *
+ * With retpolines configured:
+ *
+ * callq do_rop
+ * spec_trap:
+ * pause
+ * lfence
+ * jmp spec_trap
+ * do_rop:
+ * mov %rax,(%rsp)
+ * retq
+ *
+ * Without retpolines configured:
+ *
+ * jmp *%rax
+ */
+#ifdef CONFIG_RETPOLINE
+# define RETPOLINE_RAX_BPF_JIT_SIZE 17
+# define RETPOLINE_RAX_BPF_JIT() \
+ EMIT1_off32(0xE8, 7); /* callq do_rop */ \
+ /* spec_trap: */ \
+ EMIT2(0xF3, 0x90); /* pause */ \
+ EMIT3(0x0F, 0xAE, 0xE8); /* lfence */ \
+ EMIT2(0xEB, 0xF9); /* jmp spec_trap */ \
+ /* do_rop: */ \
+ EMIT4(0x48, 0x89, 0x04, 0x24); /* mov %rax,(%rsp) */ \
+ EMIT1(0xC3); /* retq */
+#else
+# define RETPOLINE_RAX_BPF_JIT_SIZE 2
+# define RETPOLINE_RAX_BPF_JIT() \
+ EMIT2(0xFF, 0xE0); /* jmp *%rax */
+#endif
+
#endif /* _ASM_X86_NOSPEC_BRANCH_H_ */
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 94146f665a3c..99185a064978 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -68,6 +68,8 @@ static inline void invpcid_flush_all_nonglobals(void)
struct tlb_state {
struct mm_struct *active_mm;
int state;
+ /* last user mm's ctx id */
+ u64 last_ctx_id;

/*
* Access to this CR4 shadow and to H/W CR4 is protected by
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index b5229abd1629..4922ab66fd29 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -93,8 +93,12 @@ static struct apic_chip_data *alloc_apic_chip_data(int node)
return NULL;
}

-static void free_apic_chip_data(struct apic_chip_data *data)
+static void free_apic_chip_data(unsigned int virq, struct apic_chip_data *data)
{
+#ifdef CONFIG_X86_IO_APIC
+ if (virq < nr_legacy_irqs())
+ legacy_irq_data[virq] = NULL;
+#endif
if (data) {
free_cpumask_var(data->domain);
free_cpumask_var(data->old_domain);
@@ -318,11 +322,7 @@ static void x86_vector_free_irqs(struct irq_domain *domain,
apic_data = irq_data->chip_data;
irq_domain_reset_irq_data(irq_data);
raw_spin_unlock_irqrestore(&vector_lock, flags);
- free_apic_chip_data(apic_data);
-#ifdef CONFIG_X86_IO_APIC
- if (virq + i < nr_legacy_irqs())
- legacy_irq_data[virq + i] = NULL;
-#endif
+ free_apic_chip_data(virq + i, apic_data);
}
}
}
@@ -363,7 +363,7 @@ static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq,
err = assign_irq_vector_policy(virq + i, node, data, info);
if (err) {
irq_data->chip_data = NULL;
- free_apic_chip_data(data);
+ free_apic_chip_data(virq + i, data);
goto error;
}
}
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index be644afab1bb..24d2a3ee743f 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -44,6 +44,7 @@
#include <asm/debugreg.h>
#include <asm/kvm_para.h>
#include <asm/irq_remapping.h>
+#include <asm/microcode.h>
#include <asm/nospec-branch.h>

#include <asm/virtext.h>
@@ -4919,7 +4920,7 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
* being speculatively taken.
*/
if (svm->spec_ctrl)
- wrmsrl(MSR_IA32_SPEC_CTRL, svm->spec_ctrl);
+ native_wrmsrl(MSR_IA32_SPEC_CTRL, svm->spec_ctrl);

asm volatile (
"push %%" _ASM_BP "; \n\t"
@@ -5028,11 +5029,11 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
* If the L02 MSR bitmap does not intercept the MSR, then we need to
* save it.
*/
- if (!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL))
- rdmsrl(MSR_IA32_SPEC_CTRL, svm->spec_ctrl);
+ if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
+ svm->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);

if (svm->spec_ctrl)
- wrmsrl(MSR_IA32_SPEC_CTRL, 0);
+ native_wrmsrl(MSR_IA32_SPEC_CTRL, 0);

/* Eliminate branch target predictions from guest mode */
vmexit_fill_RSB();
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c51aaac953b4..0f3bb4632310 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -49,6 +49,7 @@
#include <asm/kexec.h>
#include <asm/apic.h>
#include <asm/irq_remapping.h>
+#include <asm/microcode.h>
#include <asm/nospec-branch.h>

#include "trace.h"
@@ -8906,7 +8907,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
* being speculatively taken.
*/
if (vmx->spec_ctrl)
- wrmsrl(MSR_IA32_SPEC_CTRL, vmx->spec_ctrl);
+ native_wrmsrl(MSR_IA32_SPEC_CTRL, vmx->spec_ctrl);

vmx->__launched = vmx->loaded_vmcs->launched;
asm(
@@ -9041,11 +9042,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
* If the L02 MSR bitmap does not intercept the MSR, then we need to
* save it.
*/
- if (!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL))
- rdmsrl(MSR_IA32_SPEC_CTRL, vmx->spec_ctrl);
+ if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
+ vmx->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);

if (vmx->spec_ctrl)
- wrmsrl(MSR_IA32_SPEC_CTRL, 0);
+ native_wrmsrl(MSR_IA32_SPEC_CTRL, 0);

/* Eliminate branch target predictions from guest mode */
vmexit_fill_RSB();
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 578973ade71b..eac92e2d171b 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -10,6 +10,7 @@

#include <asm/tlbflush.h>
#include <asm/mmu_context.h>
+#include <asm/nospec-branch.h>
#include <asm/cache.h>
#include <asm/apic.h>
#include <asm/uv/uv.h>
@@ -29,6 +30,8 @@
* Implement flush IPI by CALL_FUNCTION_VECTOR, Alex Shi
*/

+atomic64_t last_mm_ctx_id = ATOMIC64_INIT(1);
+
struct flush_tlb_info {
struct mm_struct *flush_mm;
unsigned long flush_start;
@@ -104,6 +107,28 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
unsigned cpu = smp_processor_id();

if (likely(prev != next)) {
+ u64 last_ctx_id = this_cpu_read(cpu_tlbstate.last_ctx_id);
+
+ /*
+ * Avoid user/user BTB poisoning by flushing the branch
+ * predictor when switching between processes. This stops
+ * one process from doing Spectre-v2 attacks on another.
+ *
+ * As an optimization, flush indirect branches only when
+ * switching into processes that disable dumping. This
+ * protects high value processes like gpg, without having
+ * too high performance overhead. IBPB is *expensive*!
+ *
+ * This will not flush branches when switching into kernel
+ * threads. It will also not flush if we switch to idle
+ * thread and back to the same process. It will flush if we
+ * switch to a different non-dumpable process.
+ */
+ if (tsk && tsk->mm &&
+ tsk->mm->context.ctx_id != last_ctx_id &&
+ get_dumpable(tsk->mm) != SUID_DUMP_USER)
+ indirect_branch_prediction_barrier();
+
if (IS_ENABLED(CONFIG_VMAP_STACK)) {
/*
* If our current stack is in vmalloc space and isn't
@@ -118,6 +143,14 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
set_pgd(pgd, init_mm.pgd[stack_pgd_index]);
}

+ /*
+ * Record last user mm's context id, so we can avoid
+ * flushing branch buffer with IBPB if we switch back
+ * to the same user.
+ */
+ if (next != &init_mm)
+ this_cpu_write(cpu_tlbstate.last_ctx_id, next->context.ctx_id);
+
this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK);
this_cpu_write(cpu_tlbstate.active_mm, next);

diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 7840331d3056..1f7ed2ed6ff7 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -12,6 +12,7 @@
#include <linux/filter.h>
#include <linux/if_vlan.h>
#include <asm/cacheflush.h>
+#include <asm/nospec-branch.h>
#include <linux/bpf.h>

int bpf_jit_enable __read_mostly;
@@ -281,7 +282,7 @@ static void emit_bpf_tail_call(u8 **pprog)
EMIT2(0x89, 0xD2); /* mov edx, edx */
EMIT3(0x39, 0x56, /* cmp dword ptr [rsi + 16], edx */
offsetof(struct bpf_array, map.max_entries));
-#define OFFSET1 43 /* number of bytes to jump */
+#define OFFSET1 (41 + RETPOLINE_RAX_BPF_JIT_SIZE) /* number of bytes to jump */
EMIT2(X86_JBE, OFFSET1); /* jbe out */
label1 = cnt;

@@ -290,7 +291,7 @@ static void emit_bpf_tail_call(u8 **pprog)
*/
EMIT2_off32(0x8B, 0x85, -STACKSIZE + 36); /* mov eax, dword ptr [rbp - 516] */
EMIT3(0x83, 0xF8, MAX_TAIL_CALL_CNT); /* cmp eax, MAX_TAIL_CALL_CNT */
-#define OFFSET2 32
+#define OFFSET2 (30 + RETPOLINE_RAX_BPF_JIT_SIZE)
EMIT2(X86_JA, OFFSET2); /* ja out */
label2 = cnt;
EMIT3(0x83, 0xC0, 0x01); /* add eax, 1 */
@@ -304,7 +305,7 @@ static void emit_bpf_tail_call(u8 **pprog)
* goto out;
*/
EMIT3(0x48, 0x85, 0xC0); /* test rax,rax */
-#define OFFSET3 10
+#define OFFSET3 (8 + RETPOLINE_RAX_BPF_JIT_SIZE)
EMIT2(X86_JE, OFFSET3); /* je out */
label3 = cnt;

@@ -317,7 +318,7 @@ static void emit_bpf_tail_call(u8 **pprog)
* rdi == ctx (1st arg)
* rax == prog->bpf_func + prologue_size
*/
- EMIT2(0xFF, 0xE0); /* jmp rax */
+ RETPOLINE_RAX_BPF_JIT();

/* out: */
BUILD_BUG_ON(cnt - label1 != OFFSET1);
diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
index 7850128f0026..834783bc6752 100644
--- a/arch/x86/platform/intel-mid/intel-mid.c
+++ b/arch/x86/platform/intel-mid/intel-mid.c
@@ -79,7 +79,7 @@ static void intel_mid_power_off(void)

static void intel_mid_reboot(void)
{
- intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0);
+ intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 0);
}

static unsigned long __init intel_mid_calibrate_tsc(void)
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 7f664c416faf..4ecd0de08557 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -1,11 +1,14 @@
#include <linux/types.h>
#include <linux/tick.h>
+#include <linux/percpu-defs.h>

#include <xen/xen.h>
#include <xen/interface/xen.h>
#include <xen/grant_table.h>
#include <xen/events.h>

+#include <asm/cpufeatures.h>
+#include <asm/msr-index.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/page.h>
#include <asm/fixmap.h>
@@ -68,6 +71,8 @@ static void xen_pv_post_suspend(int suspend_cancelled)
xen_mm_unpin_all();
}

+static DEFINE_PER_CPU(u64, spec_ctrl);
+
void xen_arch_pre_suspend(void)
{
if (xen_pv_domain())
@@ -84,6 +89,9 @@ void xen_arch_post_suspend(int cancelled)

static void xen_vcpu_notify_restore(void *data)
{
+ if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL))
+ wrmsrl(MSR_IA32_SPEC_CTRL, this_cpu_read(spec_ctrl));
+
/* Boot processor notified via generic timekeeping_resume() */
if (smp_processor_id() == 0)
return;
@@ -93,7 +101,15 @@ static void xen_vcpu_notify_restore(void *data)

static void xen_vcpu_notify_suspend(void *data)
{
+ u64 tmp;
+
tick_suspend_local();
+
+ if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) {
+ rdmsrl(MSR_IA32_SPEC_CTRL, tmp);
+ this_cpu_write(spec_ctrl, tmp);
+ wrmsrl(MSR_IA32_SPEC_CTRL, 0);
+ }
}

void xen_arch_resume(void)
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
index 6f060c76217b..7205e6da16cd 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.c
+++ b/drivers/char/tpm/st33zp24/st33zp24.c
@@ -458,7 +458,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
size_t count)
{
int size = 0;
- int expected;
+ u32 expected;

if (!chip)
return -EBUSY;
@@ -475,7 +475,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
}

expected = be32_to_cpu(*(__be32 *)(buf + 2));
- if (expected > count) {
+ if (expected > count || expected < TPM_HEADER_SIZE) {
size = -EIO;
goto out;
}
diff --git a/drivers/char/tpm/tpm-dev.c b/drivers/char/tpm/tpm-dev.c
index 912ad30be585..65b824954bdc 100644
--- a/drivers/char/tpm/tpm-dev.c
+++ b/drivers/char/tpm/tpm-dev.c
@@ -136,6 +136,12 @@ static ssize_t tpm_write(struct file *file, const char __user *buf,
return -EFAULT;
}

+ if (in_size < 6 ||
+ in_size < be32_to_cpu(*((__be32 *) (priv->data_buffer + 2)))) {
+ mutex_unlock(&priv->buffer_mutex);
+ return -EINVAL;
+ }
+
/* atomic tpm command send and result receive. We only hold the ops
* lock during this period so that the tpm can be unregistered even if
* the char dev is held open.
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
index 62ee44e57ddc..da69ddea56cf 100644
--- a/drivers/char/tpm/tpm_i2c_infineon.c
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -437,7 +437,8 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
int size = 0;
- int expected, status;
+ int status;
+ u32 expected;

if (count < TPM_HEADER_SIZE) {
size = -EIO;
@@ -452,7 +453,7 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}

expected = be32_to_cpu(*(__be32 *)(buf + 2));
- if ((size_t) expected > count) {
+ if (((size_t) expected > count) || (expected < TPM_HEADER_SIZE)) {
size = -EIO;
goto out;
}
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index c6428771841f..caa86b19c76d 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -281,7 +281,11 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
struct device *dev = chip->dev.parent;
struct i2c_client *client = to_i2c_client(dev);
s32 rc;
- int expected, status, burst_count, retries, size = 0;
+ int status;
+ int burst_count;
+ int retries;
+ int size = 0;
+ u32 expected;

if (count < TPM_HEADER_SIZE) {
i2c_nuvoton_ready(chip); /* return to idle */
@@ -323,7 +327,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
* to machine native
*/
expected = be32_to_cpu(*(__be32 *) (buf + 2));
- if (expected > count) {
+ if (expected > count || expected < size) {
dev_err(dev, "%s() expected > count\n", __func__);
size = -EIO;
continue;
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 8022bea27fed..06173d2e316f 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -98,7 +98,7 @@ static int tpm_tcg_read_bytes(struct tpm_tis_data *data, u32 addr, u16 len,
}

static int tpm_tcg_write_bytes(struct tpm_tis_data *data, u32 addr, u16 len,
- u8 *value)
+ const u8 *value)
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 4d24ec3d7cd6..f9aa47ec7af7 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -208,7 +208,8 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev);
int size = 0;
- int expected, status;
+ int status;
+ u32 expected;

if (count < TPM_HEADER_SIZE) {
size = -EIO;
@@ -223,7 +224,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}

expected = be32_to_cpu(*(__be32 *) (buf + 2));
- if (expected > count) {
+ if (expected > count || expected < TPM_HEADER_SIZE) {
size = -EIO;
goto out;
}
@@ -256,7 +257,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
* tpm.c can skip polling for the data to be available as the interrupt is
* waited for here
*/
-static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
+static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
{
struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev);
int rc, status, burstcnt;
@@ -345,7 +346,7 @@ static void disable_interrupts(struct tpm_chip *chip)
* tpm.c can skip polling for the data to be available as the interrupt is
* waited for here
*/
-static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len)
+static int tpm_tis_send_main(struct tpm_chip *chip, const u8 *buf, size_t len)
{
struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev);
int rc;
diff --git a/drivers/char/tpm/tpm_tis_core.h b/drivers/char/tpm/tpm_tis_core.h
index 9191aabbf9c2..e1c2193f2ed3 100644
--- a/drivers/char/tpm/tpm_tis_core.h
+++ b/drivers/char/tpm/tpm_tis_core.h
@@ -98,7 +98,7 @@ struct tpm_tis_phy_ops {
int (*read_bytes)(struct tpm_tis_data *data, u32 addr, u16 len,
u8 *result);
int (*write_bytes)(struct tpm_tis_data *data, u32 addr, u16 len,
- u8 *value);
+ const u8 *value);
int (*read16)(struct tpm_tis_data *data, u32 addr, u16 *result);
int (*read32)(struct tpm_tis_data *data, u32 addr, u32 *result);
int (*write32)(struct tpm_tis_data *data, u32 addr, u32 src);
@@ -128,7 +128,7 @@ static inline int tpm_tis_read32(struct tpm_tis_data *data, u32 addr,
}

static inline int tpm_tis_write_bytes(struct tpm_tis_data *data, u32 addr,
- u16 len, u8 *value)
+ u16 len, const u8 *value)
{
return data->phy_ops->write_bytes(data, addr, len, value);
}
diff --git a/drivers/char/tpm/tpm_tis_spi.c b/drivers/char/tpm/tpm_tis_spi.c
index 3b97b14c3417..01eccb193b5a 100644
--- a/drivers/char/tpm/tpm_tis_spi.c
+++ b/drivers/char/tpm/tpm_tis_spi.c
@@ -47,9 +47,7 @@
struct tpm_tis_spi_phy {
struct tpm_tis_data priv;
struct spi_device *spi_device;
-
- u8 tx_buf[4];
- u8 rx_buf[4];
+ u8 *iobuf;
};

static inline struct tpm_tis_spi_phy *to_tpm_tis_spi_phy(struct tpm_tis_data *data)
@@ -58,7 +56,7 @@ static inline struct tpm_tis_spi_phy *to_tpm_tis_spi_phy(struct tpm_tis_data *da
}

static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
- u8 *buffer, u8 direction)
+ u8 *in, const u8 *out)
{
struct tpm_tis_spi_phy *phy = to_tpm_tis_spi_phy(data);
int ret = 0;
@@ -72,14 +70,14 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
while (len) {
transfer_len = min_t(u16, len, MAX_SPI_FRAMESIZE);

- phy->tx_buf[0] = direction | (transfer_len - 1);
- phy->tx_buf[1] = 0xd4;
- phy->tx_buf[2] = addr >> 8;
- phy->tx_buf[3] = addr;
+ phy->iobuf[0] = (in ? 0x80 : 0) | (transfer_len - 1);
+ phy->iobuf[1] = 0xd4;
+ phy->iobuf[2] = addr >> 8;
+ phy->iobuf[3] = addr;

memset(&spi_xfer, 0, sizeof(spi_xfer));
- spi_xfer.tx_buf = phy->tx_buf;
- spi_xfer.rx_buf = phy->rx_buf;
+ spi_xfer.tx_buf = phy->iobuf;
+ spi_xfer.rx_buf = phy->iobuf;
spi_xfer.len = 4;
spi_xfer.cs_change = 1;

@@ -89,9 +87,9 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
if (ret < 0)
goto exit;

- if ((phy->rx_buf[3] & 0x01) == 0) {
+ if ((phy->iobuf[3] & 0x01) == 0) {
// handle SPI wait states
- phy->tx_buf[0] = 0;
+ phy->iobuf[0] = 0;

for (i = 0; i < TPM_RETRY; i++) {
spi_xfer.len = 1;
@@ -100,7 +98,7 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
ret = spi_sync_locked(phy->spi_device, &m);
if (ret < 0)
goto exit;
- if (phy->rx_buf[0] & 0x01)
+ if (phy->iobuf[0] & 0x01)
break;
}

@@ -114,12 +112,12 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
spi_xfer.len = transfer_len;
spi_xfer.delay_usecs = 5;

- if (direction) {
+ if (in) {
spi_xfer.tx_buf = NULL;
- spi_xfer.rx_buf = buffer;
- } else {
- spi_xfer.tx_buf = buffer;
+ } else if (out) {
spi_xfer.rx_buf = NULL;
+ memcpy(phy->iobuf, out, transfer_len);
+ out += transfer_len;
}

spi_message_init(&m);
@@ -128,8 +126,12 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
if (ret < 0)
goto exit;

+ if (in) {
+ memcpy(in, phy->iobuf, transfer_len);
+ in += transfer_len;
+ }
+
len -= transfer_len;
- buffer += transfer_len;
}

exit:
@@ -140,13 +142,13 @@ static int tpm_tis_spi_transfer(struct tpm_tis_data *data, u32 addr, u16 len,
static int tpm_tis_spi_read_bytes(struct tpm_tis_data *data, u32 addr,
u16 len, u8 *result)
{
- return tpm_tis_spi_transfer(data, addr, len, result, 0x80);
+ return tpm_tis_spi_transfer(data, addr, len, result, NULL);
}

static int tpm_tis_spi_write_bytes(struct tpm_tis_data *data, u32 addr,
- u16 len, u8 *value)
+ u16 len, const u8 *value)
{
- return tpm_tis_spi_transfer(data, addr, len, value, 0);
+ return tpm_tis_spi_transfer(data, addr, len, NULL, value);
}

static int tpm_tis_spi_read16(struct tpm_tis_data *data, u32 addr, u16 *result)
@@ -195,6 +197,10 @@ static int tpm_tis_spi_probe(struct spi_device *dev)

phy->spi_device = dev;

+ phy->iobuf = devm_kmalloc(&dev->dev, MAX_SPI_FRAMESIZE, GFP_KERNEL);
+ if (!phy->iobuf)
+ return -ENOMEM;
+
return tpm_tis_core_init(&dev->dev, &phy->priv, -1, &tpm_spi_phy_ops,
NULL);
}
diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index 7b596fa38ad2..6bebc1f9f55a 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -351,7 +351,13 @@ struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
static int s3c_cpufreq_init(struct cpufreq_policy *policy)
{
policy->clk = clk_arm;
- return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
+
+ policy->cpuinfo.transition_latency = cpu_cur.info->latency;
+
+ if (ftab)
+ return cpufreq_table_validate_and_show(policy, ftab);
+
+ return 0;
}

static int __init s3c_cpufreq_initclks(void)
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 0bf1a12e35fe..ee6045d6c0bb 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -302,6 +302,7 @@ static void do_region(int op, int op_flags, unsigned region,
special_cmd_max_sectors = q->limits.max_write_same_sectors;
if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_SAME) &&
special_cmd_max_sectors == 0) {
+ atomic_inc(&io->count);
dec_count(io, region, -EOPNOTSUPP);
return;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8ebf1b97e1d2..27d8bb21e04f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8224,6 +8224,10 @@ static int remove_and_add_spares(struct mddev *mddev,
int removed = 0;
bool remove_some = false;

+ if (this && test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+ /* Mustn't remove devices when resync thread is running */
+ return 0;
+
rdev_for_each(rdev, mddev) {
if ((this == NULL || rdev == this) &&
rdev->raid_disk >= 0 &&
diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
index e0fe5bc9dbce..31f16105184c 100644
--- a/drivers/media/dvb-frontends/m88ds3103.c
+++ b/drivers/media/dvb-frontends/m88ds3103.c
@@ -1262,11 +1262,12 @@ static int m88ds3103_select(struct i2c_mux_core *muxc, u32 chan)
* New users must use I2C client binding directly!
*/
struct dvb_frontend *m88ds3103_attach(const struct m88ds3103_config *cfg,
- struct i2c_adapter *i2c, struct i2c_adapter **tuner_i2c_adapter)
+ struct i2c_adapter *i2c,
+ struct i2c_adapter **tuner_i2c_adapter)
{
struct i2c_client *client;
struct i2c_board_info board_info;
- struct m88ds3103_platform_data pdata;
+ struct m88ds3103_platform_data pdata = {};

pdata.clk = cfg->clock;
pdata.i2c_wr_max = cfg->i2c_wr_max;
@@ -1409,6 +1410,8 @@ static int m88ds3103_probe(struct i2c_client *client,
case M88DS3103_CHIP_ID:
break;
default:
+ ret = -ENODEV;
+ dev_err(&client->dev, "Unknown device. Chip_id=%02x\n", dev->chip_id);
goto err_kfree;
}

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 1e2c8eca3af1..bea9ae31a769 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -809,6 +809,7 @@ static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
bool dynamic)
{
char *sfd_pl;
+ u8 num_rec;
int err;

sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
@@ -818,9 +819,16 @@ static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
mac, fid, action, local_port);
+ num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
- kfree(sfd_pl);
+ if (err)
+ goto out;
+
+ if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl))
+ err = -EBUSY;

+out:
+ kfree(sfd_pl);
return err;
}

@@ -845,6 +853,7 @@ static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
bool adding, bool dynamic)
{
char *sfd_pl;
+ u8 num_rec;
int err;

sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
@@ -855,9 +864,16 @@ static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
lag_vid, lag_id);
+ num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
- kfree(sfd_pl);
+ if (err)
+ goto out;
+
+ if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl))
+ err = -EBUSY;

+out:
+ kfree(sfd_pl);
return err;
}

@@ -891,6 +907,7 @@ static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
u16 fid, u16 mid, bool adding)
{
char *sfd_pl;
+ u8 num_rec;
int err;

sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
@@ -900,7 +917,15 @@ static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
MLXSW_REG_SFD_REC_ACTION_NOP, mid);
+ num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
+ if (err)
+ goto out;
+
+ if (num_rec != mlxsw_reg_sfd_num_rec_get(sfd_pl))
+ err = -EBUSY;
+
+out:
kfree(sfd_pl);
return err;
}
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 6e12401b5102..e2d9ca60e467 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -925,7 +925,7 @@ void phy_start(struct phy_device *phydev)
break;
case PHY_HALTED:
/* make sure interrupts are re-enabled for the PHY */
- if (phydev->irq != PHY_POLL) {
+ if (phy_interrupt_is_valid(phydev)) {
err = phy_enable_interrupts(phydev);
if (err < 0)
break;
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index fc4c2ccc3d22..114457921890 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -3157,6 +3157,15 @@ ppp_connect_channel(struct channel *pch, int unit)
goto outl;

ppp_lock(ppp);
+ spin_lock_bh(&pch->downl);
+ if (!pch->chan) {
+ /* Don't connect unregistered channels */
+ spin_unlock_bh(&pch->downl);
+ ppp_unlock(ppp);
+ ret = -ENOTCONN;
+ goto outl;
+ }
+ spin_unlock_bh(&pch->downl);
if (pch->file.hdrlen > ppp->file.hdrlen)
ppp->file.hdrlen = pch->file.hdrlen;
hdrlen = pch->file.hdrlen + 2; /* for protocol bytes */
diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index 47fdb87d3567..8a9aced850be 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -574,7 +574,10 @@ static void ppp_timer(unsigned long arg)
ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0,
0, NULL);
proto->restart_counter--;
- } else
+ } else if (netif_carrier_ok(proto->dev))
+ ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0,
+ 0, NULL);
+ else
ppp_cp_event(proto->dev, proto->pid, TO_BAD, 0, 0,
0, NULL);
break;
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index b0916b126923..6643a7bc381c 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -526,10 +526,14 @@ static struct pcie_link_state *alloc_pcie_link_state(struct pci_dev *pdev)

/*
* Root Ports and PCI/PCI-X to PCIe Bridges are roots of PCIe
- * hierarchies.
+ * hierarchies. Note that some PCIe host implementations omit
+ * the root ports entirely, in which case a downstream port on
+ * a switch may become the root of the link state chain for all
+ * its subordinate endpoints.
*/
if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT ||
- pci_pcie_type(pdev) == PCI_EXP_TYPE_PCIE_BRIDGE) {
+ pci_pcie_type(pdev) == PCI_EXP_TYPE_PCIE_BRIDGE ||
+ !pdev->bus->parent->self) {
link->root = link;
} else {
struct pcie_link_state *parent;
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 9b5fc502f6a1..403712bf1ddf 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -592,6 +592,11 @@ struct qeth_cmd_buffer {
void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
};

+static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
+{
+ return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
+}
+
/**
* definition of a qeth channel, used for read and write
*/
@@ -849,7 +854,7 @@ struct qeth_trap_id {
*/
static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
{
- return PFN_UP(end - 1) - PFN_DOWN(start);
+ return PFN_UP(end) - PFN_DOWN(start);
}

static inline int qeth_get_micros(void)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index df8f74cb1406..cc28dda322b5 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -2050,7 +2050,7 @@ int qeth_send_control_data(struct qeth_card *card, int len,
unsigned long flags;
struct qeth_reply *reply = NULL;
unsigned long timeout, event_timeout;
- struct qeth_ipa_cmd *cmd;
+ struct qeth_ipa_cmd *cmd = NULL;

QETH_CARD_TEXT(card, 2, "sendctl");

@@ -2064,23 +2064,27 @@ int qeth_send_control_data(struct qeth_card *card, int len,
}
reply->callback = reply_cb;
reply->param = reply_param;
- if (card->state == CARD_STATE_DOWN)
- reply->seqno = QETH_IDX_COMMAND_SEQNO;
- else
- reply->seqno = card->seqno.ipa++;
+
init_waitqueue_head(&reply->wait_q);
- spin_lock_irqsave(&card->lock, flags);
- list_add_tail(&reply->list, &card->cmd_waiter_list);
- spin_unlock_irqrestore(&card->lock, flags);
QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);

while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
- qeth_prepare_control_data(card, len, iob);

- if (IS_IPA(iob->data))
+ if (IS_IPA(iob->data)) {
+ cmd = __ipa_cmd(iob);
+ cmd->hdr.seqno = card->seqno.ipa++;
+ reply->seqno = cmd->hdr.seqno;
event_timeout = QETH_IPA_TIMEOUT;
- else
+ } else {
+ reply->seqno = QETH_IDX_COMMAND_SEQNO;
event_timeout = QETH_TIMEOUT;
+ }
+ qeth_prepare_control_data(card, len, iob);
+
+ spin_lock_irqsave(&card->lock, flags);
+ list_add_tail(&reply->list, &card->cmd_waiter_list);
+ spin_unlock_irqrestore(&card->lock, flags);
+
timeout = jiffies + event_timeout;

QETH_CARD_TEXT(card, 6, "noirqpnd");
@@ -2105,9 +2109,8 @@ int qeth_send_control_data(struct qeth_card *card, int len,

/* we have only one long running ipassist, since we can ensure
process context of this command we can sleep */
- cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
- if ((cmd->hdr.command == IPA_CMD_SETIP) &&
- (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
+ if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
+ cmd->hdr.prot_version == QETH_PROT_IPV4) {
if (!wait_event_timeout(reply->wait_q,
atomic_read(&reply->received), event_timeout))
goto time_err;
@@ -2871,7 +2874,7 @@ static void qeth_fill_ipacmd_header(struct qeth_card *card,
memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
cmd->hdr.command = command;
cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
- cmd->hdr.seqno = card->seqno.ipa;
+ /* cmd->hdr.seqno is set by qeth_send_control_data() */
cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
if (card->options.layer2)
@@ -3852,10 +3855,12 @@ EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
int qeth_get_elements_no(struct qeth_card *card,
struct sk_buff *skb, int extra_elems, int data_offset)
{
- int elements = qeth_get_elements_for_range(
- (addr_t)skb->data + data_offset,
- (addr_t)skb->data + skb_headlen(skb)) +
- qeth_get_elements_for_frags(skb);
+ addr_t end = (addr_t)skb->data + skb_headlen(skb);
+ int elements = qeth_get_elements_for_frags(skb);
+ addr_t start = (addr_t)skb->data + data_offset;
+
+ if (start != end)
+ elements += qeth_get_elements_for_range(start, end);

if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
diff --git a/drivers/s390/net/qeth_l3.h b/drivers/s390/net/qeth_l3.h
index eedf9b01a496..573569474e44 100644
--- a/drivers/s390/net/qeth_l3.h
+++ b/drivers/s390/net/qeth_l3.h
@@ -39,8 +39,40 @@ struct qeth_ipaddr {
unsigned int pfxlen;
} a6;
} u;
-
};
+
+static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1,
+ struct qeth_ipaddr *a2)
+{
+ if (a1->proto != a2->proto)
+ return false;
+ if (a1->proto == QETH_PROT_IPV6)
+ return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr);
+ return a1->u.a4.addr == a2->u.a4.addr;
+}
+
+static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1,
+ struct qeth_ipaddr *a2)
+{
+ /* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(),
+ * so 'proto' and 'addr' match for sure.
+ *
+ * For ucast:
+ * - 'mac' is always 0.
+ * - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching
+ * values are required to avoid mixups in takeover eligibility.
+ *
+ * For mcast,
+ * - 'mac' is mapped from the IP, and thus always matches.
+ * - 'mask'/'pfxlen' is always 0.
+ */
+ if (a1->type != a2->type)
+ return false;
+ if (a1->proto == QETH_PROT_IPV6)
+ return a1->u.a6.pfxlen == a2->u.a6.pfxlen;
+ return a1->u.a4.mask == a2->u.a4.mask;
+}
+
static inline u64 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)
{
u64 ret = 0;
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 1487f8a0c575..a668e6b71a29 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -154,6 +154,24 @@ int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
return -EINVAL;
}

+static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
+ struct qeth_ipaddr *query)
+{
+ u64 key = qeth_l3_ipaddr_hash(query);
+ struct qeth_ipaddr *addr;
+
+ if (query->is_multicast) {
+ hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
+ if (qeth_l3_addr_match_ip(addr, query))
+ return addr;
+ } else {
+ hash_for_each_possible(card->ip_htable, addr, hnode, key)
+ if (qeth_l3_addr_match_ip(addr, query))
+ return addr;
+ }
+ return NULL;
+}
+
static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
{
int i, j;
@@ -207,34 +225,6 @@ static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
return rc;
}

-inline int
-qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
-{
- return addr1->proto == addr2->proto &&
- !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u)) &&
- !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
-}
-
-static struct qeth_ipaddr *
-qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
-{
- struct qeth_ipaddr *addr;
-
- if (tmp_addr->is_multicast) {
- hash_for_each_possible(card->ip_mc_htable, addr,
- hnode, qeth_l3_ipaddr_hash(tmp_addr))
- if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
- return addr;
- } else {
- hash_for_each_possible(card->ip_htable, addr,
- hnode, qeth_l3_ipaddr_hash(tmp_addr))
- if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
- return addr;
- }
-
- return NULL;
-}
-
int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
{
int rc = 0;
@@ -249,8 +239,8 @@ int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
}

- addr = qeth_l3_ip_from_hash(card, tmp_addr);
- if (!addr)
+ addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
+ if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
return -ENOENT;

addr->ref_counter--;
@@ -259,12 +249,8 @@ int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
if (addr->in_progress)
return -EINPROGRESS;

- if (!qeth_card_hw_is_reachable(card)) {
- addr->disp_flag = QETH_DISP_ADDR_DELETE;
- return 0;
- }
-
- rc = qeth_l3_deregister_addr_entry(card, addr);
+ if (qeth_card_hw_is_reachable(card))
+ rc = qeth_l3_deregister_addr_entry(card, addr);

hash_del(&addr->hnode);
kfree(addr);
@@ -276,6 +262,7 @@ int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
{
int rc = 0;
struct qeth_ipaddr *addr;
+ char buf[40];

QETH_CARD_TEXT(card, 4, "addip");

@@ -286,8 +273,20 @@ int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
}

- addr = qeth_l3_ip_from_hash(card, tmp_addr);
- if (!addr) {
+ addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
+ if (addr) {
+ if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
+ return -EADDRINUSE;
+ if (qeth_l3_addr_match_all(addr, tmp_addr)) {
+ addr->ref_counter++;
+ return 0;
+ }
+ qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
+ buf);
+ dev_warn(&card->gdev->dev,
+ "Registering IP address %s failed\n", buf);
+ return -EADDRINUSE;
+ } else {
addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
if (!addr)
return -ENOMEM;
@@ -327,18 +326,15 @@ int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
(rc == IPA_RC_LAN_OFFLINE)) {
addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
if (addr->ref_counter < 1) {
- qeth_l3_delete_ip(card, addr);
+ qeth_l3_deregister_addr_entry(card, addr);
+ hash_del(&addr->hnode);
kfree(addr);
}
} else {
hash_del(&addr->hnode);
kfree(addr);
}
- } else {
- if (addr->type == QETH_IP_TYPE_NORMAL)
- addr->ref_counter++;
}
-
return rc;
}

@@ -406,11 +402,7 @@ static void qeth_l3_recover_ip(struct qeth_card *card)
spin_lock_bh(&card->ip_lock);

hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
- if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
- qeth_l3_deregister_addr_entry(card, addr);
- hash_del(&addr->hnode);
- kfree(addr);
- } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
+ if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
if (addr->proto == QETH_PROT_IPV4) {
addr->in_progress = 1;
spin_unlock_bh(&card->ip_lock);
@@ -726,12 +718,7 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
return -ENOMEM;

spin_lock_bh(&card->ip_lock);
-
- if (qeth_l3_ip_from_hash(card, ipaddr))
- rc = -EEXIST;
- else
- qeth_l3_add_ip(card, ipaddr);
-
+ rc = qeth_l3_add_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);

kfree(ipaddr);
@@ -794,12 +781,7 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
return -ENOMEM;

spin_lock_bh(&card->ip_lock);
-
- if (qeth_l3_ip_from_hash(card, ipaddr))
- rc = -EEXIST;
- else
- qeth_l3_add_ip(card, ipaddr);
-
+ rc = qeth_l3_add_ip(card, ipaddr);
spin_unlock_bh(&card->ip_lock);

kfree(ipaddr);
@@ -1444,8 +1426,9 @@ qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
memcpy(tmp->mac, buf, sizeof(tmp->mac));
tmp->is_multicast = 1;

- ipm = qeth_l3_ip_from_hash(card, tmp);
+ ipm = qeth_l3_find_addr_by_ip(card, tmp);
if (ipm) {
+ /* for mcast, by-IP match means full match */
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
} else {
ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
@@ -1528,8 +1511,9 @@ qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
sizeof(struct in6_addr));
tmp->is_multicast = 1;

- ipm = qeth_l3_ip_from_hash(card, tmp);
+ ipm = qeth_l3_find_addr_by_ip(card, tmp);
if (ipm) {
+ /* for mcast, by-IP match means full match */
ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
continue;
}
@@ -2784,11 +2768,12 @@ static void qeth_tso_fill_header(struct qeth_card *card,
static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
struct sk_buff *skb, int extra_elems)
{
- addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
- int elements = qeth_get_elements_for_range(
- tcpdptr,
- (addr_t)skb->data + skb_headlen(skb)) +
- qeth_get_elements_for_frags(skb);
+ addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
+ addr_t end = (addr_t)skb->data + skb_headlen(skb);
+ int elements = qeth_get_elements_for_frags(skb);
+
+ if (start != end)
+ elements += qeth_get_elements_for_range(start, end);

if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
QETH_DBF_MESSAGE(2,
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 8d8370ddb6b2..1ba49ebe67da 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -114,13 +114,17 @@ static int __btrfs_set_acl(struct btrfs_trans_handle *trans,
int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
int ret;
+ umode_t old_mode = inode->i_mode;

if (type == ACL_TYPE_ACCESS && acl) {
ret = posix_acl_update_mode(inode, &inode->i_mode, &acl);
if (ret)
return ret;
}
- return __btrfs_set_acl(NULL, inode, acl, type);
+ ret = __btrfs_set_acl(NULL, inode, acl, type);
+ if (ret)
+ inode->i_mode = old_mode;
+ return ret;
}

/*
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 745ea1b2e02c..18552189560b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3048,7 +3048,7 @@ static inline bool vma_is_fsdax(struct vm_area_struct *vma)
if (!vma_is_dax(vma))
return false;
inode = file_inode(vma->vm_file);
- if (inode->i_mode == S_IFCHR)
+ if (S_ISCHR(inode->i_mode))
return false; /* device-dax */
return true;
}
diff --git a/include/linux/nospec.h b/include/linux/nospec.h
index fbc98e2c8228..132e3f5a2e0d 100644
--- a/include/linux/nospec.h
+++ b/include/linux/nospec.h
@@ -72,7 +72,6 @@ static inline unsigned long array_index_mask_nospec(unsigned long index,
BUILD_BUG_ON(sizeof(_i) > sizeof(long)); \
BUILD_BUG_ON(sizeof(_s) > sizeof(long)); \
\
- _i &= _mask; \
- _i; \
+ (typeof(_i)) (_i & _mask); \
})
#endif /* _LINUX_NOSPEC_H */
diff --git a/include/net/udplite.h b/include/net/udplite.h
index 80761938b9a7..8228155b305e 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -62,6 +62,7 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
UDP_SKB_CB(skb)->cscov = cscov;
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
+ skb->csum_valid = 0;
}

return 0;
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 9a1e6ed7babc..a38119e4a427 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -20,8 +20,10 @@ static void bpf_array_free_percpu(struct bpf_array *array)
{
int i;

- for (i = 0; i < array->map.max_entries; i++)
+ for (i = 0; i < array->map.max_entries; i++) {
free_percpu(array->pptrs[i]);
+ cond_resched();
+ }
}

static int bpf_array_alloc_percpu(struct bpf_array *array)
@@ -37,6 +39,7 @@ static int bpf_array_alloc_percpu(struct bpf_array *array)
return -ENOMEM;
}
array->pptrs[i] = ptr;
+ cond_resched();
}

return 0;
@@ -48,8 +51,9 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
bool percpu = attr->map_type == BPF_MAP_TYPE_PERCPU_ARRAY;
u32 elem_size, index_mask, max_entries;
bool unpriv = !capable(CAP_SYS_ADMIN);
+ u64 cost, array_size, mask64;
struct bpf_array *array;
- u64 array_size, mask64;
+ int ret;

/* check sanity of attributes */
if (attr->max_entries == 0 || attr->key_size != 4 ||
@@ -92,8 +96,19 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
array_size += (u64) max_entries * elem_size;

/* make sure there is no u32 overflow later in round_up() */
- if (array_size >= U32_MAX - PAGE_SIZE)
+ cost = array_size;
+ if (cost >= U32_MAX - PAGE_SIZE)
return ERR_PTR(-ENOMEM);
+ if (percpu) {
+ cost += (u64)attr->max_entries * elem_size * num_possible_cpus();
+ if (cost >= U32_MAX - PAGE_SIZE)
+ return ERR_PTR(-ENOMEM);
+ }
+ cost = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;
+
+ ret = bpf_map_precharge_memlock(cost);
+ if (ret < 0)
+ return ERR_PTR(ret);

/* allocate all map elements and zero-initialize them */
array = bpf_map_area_alloc(array_size);
@@ -107,20 +122,16 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
array->map.key_size = attr->key_size;
array->map.value_size = attr->value_size;
array->map.max_entries = attr->max_entries;
+ array->map.map_flags = attr->map_flags;
+ array->map.pages = cost;
array->elem_size = elem_size;

- if (!percpu)
- goto out;
-
- array_size += (u64) attr->max_entries * elem_size * num_possible_cpus();
-
- if (array_size >= U32_MAX - PAGE_SIZE ||
- elem_size > PCPU_MIN_UNIT_SIZE || bpf_array_alloc_percpu(array)) {
+ if (percpu &&
+ (elem_size > PCPU_MIN_UNIT_SIZE ||
+ bpf_array_alloc_percpu(array))) {
bpf_map_area_free(array);
return ERR_PTR(-ENOMEM);
}
-out:
- array->map.pages = round_up(array_size, PAGE_SIZE) >> PAGE_SHIFT;

return &array->map;
}
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
index be8519148c25..a2a232dec236 100644
--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -88,6 +88,7 @@ static struct bpf_map *stack_map_alloc(union bpf_attr *attr)
smap->map.key_size = attr->key_size;
smap->map.value_size = value_size;
smap->map.max_entries = attr->max_entries;
+ smap->map.map_flags = attr->map_flags;
smap->n_buckets = n_buckets;
smap->map.pages = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;

diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index 2d5cc7dfee14..7c477912f36d 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1884,6 +1884,12 @@ int timers_dead_cpu(unsigned int cpu)
spin_lock_irq(&new_base->lock);
spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING);

+ /*
+ * The current CPUs base clock might be stale. Update it
+ * before moving the timers over.
+ */
+ forward_timer_base(new_base);
+
BUG_ON(old_base->running_timer);

for (i = 0; i < WHEEL_SIZE; i++)
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 8bd569695e76..abf711112418 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -230,6 +230,9 @@ static ssize_t brport_show(struct kobject *kobj,
struct brport_attribute *brport_attr = to_brport_attr(attr);
struct net_bridge_port *p = to_brport(kobj);

+ if (!brport_attr->show)
+ return -EINVAL;
+
return brport_attr->show(p, buf);
}

diff --git a/net/core/dev.c b/net/core/dev.c
index 8898618bf341..272f84ad16e0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2199,8 +2199,11 @@ EXPORT_SYMBOL(netif_set_xps_queue);
*/
int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
{
+ bool disabling;
int rc;

+ disabling = txq < dev->real_num_tx_queues;
+
if (txq < 1 || txq > dev->num_tx_queues)
return -EINVAL;

@@ -2216,15 +2219,19 @@ int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq)
if (dev->num_tc)
netif_setup_tc(dev, txq);

- if (txq < dev->real_num_tx_queues) {
+ dev->real_num_tx_queues = txq;
+
+ if (disabling) {
+ synchronize_net();
qdisc_reset_all_tx_gt(dev, txq);
#ifdef CONFIG_XPS
netif_reset_xps_queues_gt(dev, txq);
#endif
}
+ } else {
+ dev->real_num_tx_queues = txq;
}

- dev->real_num_tx_queues = txq;
return 0;
}
EXPORT_SYMBOL(netif_set_real_num_tx_queues);
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 38c1c979ecb1..7e7b7a3efa99 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -640,6 +640,11 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
fi->fib_nh, cfg))
return 1;
}
+#ifdef CONFIG_IP_ROUTE_CLASSID
+ if (cfg->fc_flow &&
+ cfg->fc_flow != fi->fib_nh->nh_tclassid)
+ return 1;
+#endif
if ((!cfg->fc_oif || cfg->fc_oif == fi->fib_nh->nh_oif) &&
(!cfg->fc_gw || cfg->fc_gw == fi->fib_nh->nh_gw))
return 0;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 7ac319222558..4c9fbf4f5905 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -126,10 +126,13 @@ static int ip_rt_redirect_silence __read_mostly = ((HZ / 50) << (9 + 1));
static int ip_rt_error_cost __read_mostly = HZ;
static int ip_rt_error_burst __read_mostly = 5 * HZ;
static int ip_rt_mtu_expires __read_mostly = 10 * 60 * HZ;
-static int ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
+static u32 ip_rt_min_pmtu __read_mostly = 512 + 20 + 20;
static int ip_rt_min_advmss __read_mostly = 256;

static int ip_rt_gc_timeout __read_mostly = RT_GC_TIMEOUT;
+
+static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU;
+
/*
* Interface to generic destination cache.
*/
@@ -2772,7 +2775,8 @@ static struct ctl_table ipv4_route_table[] = {
.data = &ip_rt_min_pmtu,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &ip_min_valid_pmtu,
},
{
.procname = "min_adv_mss",
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 3d7b59ecc76c..a69606031e5f 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1580,7 +1580,7 @@ u32 tcp_tso_autosize(const struct sock *sk, unsigned int mss_now,
*/
segs = max_t(u32, bytes / mss_now, min_tso_segs);

- return min_t(u32, segs, sk->sk_gso_max_segs);
+ return segs;
}
EXPORT_SYMBOL(tcp_tso_autosize);

@@ -1592,8 +1592,10 @@ static u32 tcp_tso_segs(struct sock *sk, unsigned int mss_now)
const struct tcp_congestion_ops *ca_ops = inet_csk(sk)->icsk_ca_ops;
u32 tso_segs = ca_ops->tso_segs_goal ? ca_ops->tso_segs_goal(sk) : 0;

- return tso_segs ? :
- tcp_tso_autosize(sk, mss_now, sysctl_tcp_min_tso_segs);
+ if (!tso_segs)
+ tso_segs = tcp_tso_autosize(sk, mss_now,
+ sysctl_tcp_min_tso_segs);
+ return min_t(u32, tso_segs, sk->sk_gso_max_segs);
}

/* Returns the portion of skb which can be sent right away */
@@ -1907,6 +1909,24 @@ static inline void tcp_mtu_check_reprobe(struct sock *sk)
}
}

+static bool tcp_can_coalesce_send_queue_head(struct sock *sk, int len)
+{
+ struct sk_buff *skb, *next;
+
+ skb = tcp_send_head(sk);
+ tcp_for_write_queue_from_safe(skb, next, sk) {
+ if (len <= skb->len)
+ break;
+
+ if (unlikely(TCP_SKB_CB(skb)->eor))
+ return false;
+
+ len -= skb->len;
+ }
+
+ return true;
+}
+
/* Create a new MTU probe if we are ready.
* MTU probe is regularly attempting to increase the path MTU by
* deliberately sending larger packets. This discovers routing
@@ -1979,6 +1999,9 @@ static int tcp_mtu_probe(struct sock *sk)
return 0;
}

+ if (!tcp_can_coalesce_send_queue_head(sk, probe_size))
+ return -1;
+
/* We're allowed to probe. Build it now. */
nskb = sk_stream_alloc_skb(sk, probe_size, GFP_ATOMIC, false);
if (!nskb)
@@ -2014,6 +2037,10 @@ static int tcp_mtu_probe(struct sock *sk)
/* We've eaten all the data from this skb.
* Throw it away. */
TCP_SKB_CB(nskb)->tcp_flags |= TCP_SKB_CB(skb)->tcp_flags;
+ /* If this is the last SKB we copy and eor is set
+ * we need to propagate it to the new skb.
+ */
+ TCP_SKB_CB(nskb)->eor = TCP_SKB_CB(skb)->eor;
tcp_unlink_write_queue(skb, sk);
sk_wmem_free_skb(sk, skb);
} else {
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index bef4a94ce1a0..4cd943096afa 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1713,6 +1713,11 @@ static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,
err = udplite_checksum_init(skb, uh);
if (err)
return err;
+
+ if (UDP_SKB_CB(skb)->partial_cov) {
+ skb->csum = inet_compute_pseudo(skb, proto);
+ return 0;
+ }
}

/* Note, we are only interested in != 0 or == 0, thus the
diff --git a/net/ipv6/ip6_checksum.c b/net/ipv6/ip6_checksum.c
index c0cbcb259f5a..1dc023ca98fd 100644
--- a/net/ipv6/ip6_checksum.c
+++ b/net/ipv6/ip6_checksum.c
@@ -72,6 +72,11 @@ int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto)
err = udplite_checksum_init(skb, uh);
if (err)
return err;
+
+ if (UDP_SKB_CB(skb)->partial_cov) {
+ skb->csum = ip6_compute_pseudo(skb, proto);
+ return 0;
+ }
}

/* To support RFC 6936 (allow zero checksum in UDP/IPV6 for tunnels)
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index db6d437002a6..d4d84da28672 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -176,7 +176,7 @@ static void ipip6_tunnel_clone_6rd(struct net_device *dev, struct sit_net *sitn)
#ifdef CONFIG_IPV6_SIT_6RD
struct ip_tunnel *t = netdev_priv(dev);

- if (t->dev == sitn->fb_tunnel_dev) {
+ if (dev == sitn->fb_tunnel_dev) {
ipv6_addr_set(&t->ip6rd.prefix, htonl(0x20020000), 0, 0, 0);
t->ip6rd.relay_prefix = 0;
t->ip6rd.prefixlen = 16;
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index c5a5a6959c1b..ffab94d61e1d 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -7,6 +7,7 @@
#include <linux/if_arp.h>
#include <linux/ipv6.h>
#include <linux/mpls.h>
+#include <linux/nospec.h>
#include <linux/vmalloc.h>
#include <net/ip.h>
#include <net/dst.h>
@@ -756,6 +757,22 @@ static int mpls_nh_build_multi(struct mpls_route_config *cfg,
return err;
}

+static bool mpls_label_ok(struct net *net, unsigned int *index)
+{
+ bool is_ok = true;
+
+ /* Reserved labels may not be set */
+ if (*index < MPLS_LABEL_FIRST_UNRESERVED)
+ is_ok = false;
+
+ /* The full 20 bit range may not be supported. */
+ if (is_ok && *index >= net->mpls.platform_labels)
+ is_ok = false;
+
+ *index = array_index_nospec(*index, net->mpls.platform_labels);
+ return is_ok;
+}
+
static int mpls_route_add(struct mpls_route_config *cfg)
{
struct mpls_route __rcu **platform_label;
@@ -774,12 +791,7 @@ static int mpls_route_add(struct mpls_route_config *cfg)
index = find_free_label(net);
}

- /* Reserved labels may not be set */
- if (index < MPLS_LABEL_FIRST_UNRESERVED)
- goto errout;
-
- /* The full 20 bit range may not be supported. */
- if (index >= net->mpls.platform_labels)
+ if (!mpls_label_ok(net, &index))
goto errout;

/* Append makes no sense with mpls */
@@ -840,12 +852,7 @@ static int mpls_route_del(struct mpls_route_config *cfg)

index = cfg->rc_label;

- /* Reserved labels may not be removed */
- if (index < MPLS_LABEL_FIRST_UNRESERVED)
- goto errout;
-
- /* The full 20 bit range may not be supported */
- if (index >= net->mpls.platform_labels)
+ if (!mpls_label_ok(net, &index))
goto errout;

mpls_route_update(net, index, NULL, &cfg->rc_nlinfo);
@@ -1279,10 +1286,9 @@ static int rtm_to_route_config(struct sk_buff *skb, struct nlmsghdr *nlh,
&cfg->rc_label))
goto errout;

- /* Reserved labels may not be set */
- if (cfg->rc_label < MPLS_LABEL_FIRST_UNRESERVED)
+ if (!mpls_label_ok(cfg->rc_nlinfo.nl_net,
+ &cfg->rc_label))
goto errout;
-
break;
}
case RTA_VIA:
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index e1c123d4cdda..c1f59a06da6f 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2258,7 +2258,7 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
if (cb->start) {
ret = cb->start(cb);
if (ret)
- goto error_unlock;
+ goto error_put;
}

nlk->cb_running = true;
@@ -2278,6 +2278,8 @@ int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
*/
return -EINTR;

+error_put:
+ module_put(control->module);
error_unlock:
sock_put(sk);
mutex_unlock(nlk->cb_mutex);
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 49c28e8ef01b..11702016c900 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -1103,6 +1103,7 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group,
{
struct sk_buff *tmp;
struct net *net, *prev = NULL;
+ bool delivered = false;
int err;

for_each_net_rcu(net) {
@@ -1114,14 +1115,21 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group,
}
err = nlmsg_multicast(prev->genl_sock, tmp,
portid, group, flags);
- if (err)
+ if (!err)
+ delivered = true;
+ else if (err != -ESRCH)
goto error;
}

prev = net;
}

- return nlmsg_multicast(prev->genl_sock, skb, portid, group, flags);
+ err = nlmsg_multicast(prev->genl_sock, skb, portid, group, flags);
+ if (!err)
+ delivered = true;
+ else if (err != -ESRCH)
+ goto error;
+ return delivered ? 0 : -ESRCH;
error:
kfree_skb(skb);
return err;
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 5dab1ff3a6c2..59d328603312 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -391,7 +391,7 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb,
(char *)&opt, sizeof(opt));
if (ret == 0) {
ret = kernel_sendmsg(conn->params.local->socket, &msg,
- iov, 1, iov[0].iov_len);
+ iov, 2, len);

opt = IPV6_PMTUDISC_DO;
kernel_setsockopt(conn->params.local->socket,
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 5d015270e454..11f69d4c5619 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -324,8 +324,10 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
final_p = fl6_update_dst(fl6, rcu_dereference(np->opt), &final);
bdst = ip6_dst_lookup_flow(sk, fl6, final_p);

- if (!IS_ERR(bdst) &&
- ipv6_chk_addr(dev_net(bdst->dev),
+ if (IS_ERR(bdst))
+ continue;
+
+ if (ipv6_chk_addr(dev_net(bdst->dev),
&laddr->a.v6.sin6_addr, bdst->dev, 1)) {
if (!IS_ERR_OR_NULL(dst))
dst_release(dst);
@@ -334,8 +336,10 @@ static void sctp_v6_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
}

bmatchlen = sctp_v6_addr_match_len(daddr, &laddr->a);
- if (matchlen > bmatchlen)
+ if (matchlen > bmatchlen) {
+ dst_release(bdst);
continue;
+ }

if (!IS_ERR_OR_NULL(dst))
dst_release(dst);
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 7b523e3f551f..fb7b7632316a 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -510,22 +510,20 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
if (IS_ERR(rt))
continue;

- if (!dst)
- dst = &rt->dst;
-
/* Ensure the src address belongs to the output
* interface.
*/
odev = __ip_dev_find(sock_net(sk), laddr->a.v4.sin_addr.s_addr,
false);
if (!odev || odev->ifindex != fl4->flowi4_oif) {
- if (&rt->dst != dst)
+ if (!dst)
+ dst = &rt->dst;
+ else
dst_release(&rt->dst);
continue;
}

- if (dst != &rt->dst)
- dst_release(dst);
+ dst_release(dst);
dst = &rt->dst;
break;
}
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 9e9690b7afe1..fc67d356b5fa 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1373,9 +1373,14 @@ static struct sctp_chunk *_sctp_make_chunk(const struct sctp_association *asoc,
sctp_chunkhdr_t *chunk_hdr;
struct sk_buff *skb;
struct sock *sk;
+ int chunklen;
+
+ chunklen = SCTP_PAD4(sizeof(*chunk_hdr) + paylen);
+ if (chunklen > SCTP_MAX_CHUNK_LEN)
+ goto nodata;

/* No need to allocate LL here, as this is only a chunk. */
- skb = alloc_skb(SCTP_PAD4(sizeof(sctp_chunkhdr_t) + paylen), gfp);
+ skb = alloc_skb(chunklen, gfp);
if (!skb)
goto nodata;

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 293f3f213776..ceb162a9dcfd 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -180,7 +180,7 @@ static const struct kernel_param_ops param_ops_xint = {
};
#define param_check_xint param_check_int

-static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
+static int power_save = -1;
module_param(power_save, xint, 0644);
MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
"(in second, 0 = disable).");
@@ -2042,6 +2042,24 @@ static int azx_probe(struct pci_dev *pci,
return err;
}

+#ifdef CONFIG_PM
+/* On some boards setting power_save to a non 0 value leads to clicking /
+ * popping sounds when ever we enter/leave powersaving mode. Ideally we would
+ * figure out how to avoid these sounds, but that is not always feasible.
+ * So we keep a list of devices where we disable powersaving as its known
+ * to causes problems on these devices.
+ */
+static struct snd_pci_quirk power_save_blacklist[] = {
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
+ SND_PCI_QUIRK(0x1849, 0x0c0c, "Asrock B85M-ITX", 0),
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
+ SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
+ /* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
+ SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
+ {}
+};
+#endif /* CONFIG_PM */
+
/* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] = {
[AZX_DRIVER_NVIDIA] = 8,
@@ -2054,6 +2072,7 @@ static int azx_probe_continue(struct azx *chip)
struct hdac_bus *bus = azx_bus(chip);
struct pci_dev *pci = chip->pci;
int dev = chip->dev_index;
+ int val;
int err;

hda->probe_continued = 1;
@@ -2129,7 +2148,22 @@ static int azx_probe_continue(struct azx *chip)

chip->running = 1;
azx_add_card_list(chip);
- snd_hda_set_power_save(&chip->bus, power_save * 1000);
+
+ val = power_save;
+#ifdef CONFIG_PM
+ if (val == -1) {
+ const struct snd_pci_quirk *q;
+
+ val = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
+ q = snd_pci_quirk_lookup(chip->pci, power_save_blacklist);
+ if (q && val) {
+ dev_info(chip->card->dev, "device %04x:%04x is on the power_save blacklist, forcing power_save to 0\n",
+ q->subvendor, q->subdevice);
+ val = 0;
+ }
+ }
+#endif /* CONFIG_PM */
+ snd_hda_set_power_save(&chip->bus, val * 1000);
if (azx_has_pm_runtime(chip) || hda->use_vga_switcheroo)
pm_runtime_put_autosuspend(&pci->dev);

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 89c166b97e81..974b74e91ef0 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4480,13 +4480,14 @@ static void alc_fixup_tpt470_dock(struct hda_codec *codec,

if (action == HDA_FIXUP_ACT_PRE_PROBE) {
spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP;
+ snd_hda_apply_pincfgs(codec, pincfgs);
+ } else if (action == HDA_FIXUP_ACT_INIT) {
/* Enable DOCK device */
snd_hda_codec_write(codec, 0x17, 0,
AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, 0);
/* Enable DOCK device */
snd_hda_codec_write(codec, 0x19, 0,
AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, 0);
- snd_hda_apply_pincfgs(codec, pincfgs);
}
}

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 8a59d4782a0f..69bf5cf1e91e 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -3277,4 +3277,51 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
}
},

+{
+ /*
+ * Bower's & Wilkins PX headphones only support the 48 kHz sample rate
+ * even though it advertises more. The capture interface doesn't work
+ * even on windows.
+ */
+ USB_DEVICE(0x19b5, 0x0021),
+ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+ .ifnum = QUIRK_ANY_INTERFACE,
+ .type = QUIRK_COMPOSITE,
+ .data = (const struct snd_usb_audio_quirk[]) {
+ {
+ .ifnum = 0,
+ .type = QUIRK_AUDIO_STANDARD_MIXER,
+ },
+ /* Capture */
+ {
+ .ifnum = 1,
+ .type = QUIRK_IGNORE_INTERFACE,
+ },
+ /* Playback */
+ {
+ .ifnum = 2,
+ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
+ .data = &(const struct audioformat) {
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels = 2,
+ .iface = 2,
+ .altsetting = 1,
+ .altset_idx = 1,
+ .attributes = UAC_EP_CS_ATTR_FILL_MAX |
+ UAC_EP_CS_ATTR_SAMPLE_RATE,
+ .endpoint = 0x03,
+ .ep_attr = USB_ENDPOINT_XFER_ISOC,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .nr_rates = 1,
+ .rate_table = (unsigned int[]) {
+ 48000
+ }
+ }
+ },
+ }
+ }
+},
+
#undef USB_DEVICE_VENDOR_SPEC
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 1b20768e781d..eaae7252f60c 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -976,8 +976,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
/* Check for overlaps */
r = -EEXIST;
kvm_for_each_memslot(slot, __kvm_memslots(kvm, as_id)) {
- if ((slot->id >= KVM_USER_MEM_SLOTS) ||
- (slot->id == id))
+ if (slot->id == id)
continue;
if (!((base_gfn + npages <= slot->base_gfn) ||
(base_gfn >= slot->base_gfn + slot->npages)))
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