Linux 6.18.3

index 4995b6e22335..9625570dc353 100644
@@ -133,7 +133,7 @@ static int ghash_finup(struct shash_desc *desc, const u8 *src,
 		u8 buf[GHASH_BLOCK_SIZE] = {};
 
 		memcpy(buf, src, len);
-		ghash_do_simd_update(1, ctx->digest, src, key, NULL,
+		ghash_do_simd_update(1, ctx->digest, buf, key, NULL,
 				     pmull_ghash_update_p8);
 		memzero_explicit(buf, sizeof(buf));
 	}

index fba7ca102a8c..489554931231 100644
@@ -292,6 +292,7 @@ static void flush_gcs(void)
 	current->thread.gcs_base = 0;
 	current->thread.gcs_size = 0;
 	current->thread.gcs_el0_mode = 0;
+	current->thread.gcs_el0_locked = 0;
 	write_sysreg_s(GCSCRE0_EL1_nTR, SYS_GCSCRE0_EL1);
 	write_sysreg_s(0, SYS_GCSPR_EL0);
 }

index 0c9a50a1e73e..0dfefeedfe56 100644
@@ -1004,7 +1004,7 @@ static void __maybe_unused build_bhb_mitigation(struct jit_ctx *ctx)
 	    arm64_get_spectre_v2_state() == SPECTRE_VULNERABLE)
 		return;
 
-	if (capable(CAP_SYS_ADMIN))
+	if (ns_capable_noaudit(&init_user_ns, CAP_SYS_ADMIN))
 		return;
 
 	if (supports_clearbhb(SCOPE_SYSTEM)) {

index f39e85fd58fa..b15615b28569 100644
@@ -54,10 +54,20 @@ static inline void ftrace_dyn_arch_init_insns(void)
 	u32 *buf;
 	unsigned int v1;
 
-	/* la v1, _mcount */
-	v1 = 3;
-	buf = (u32 *)&insn_la_mcount[0];
-	UASM_i_LA(&buf, v1, MCOUNT_ADDR);
+	/* If we are not in compat space, the number of generated
+	 * instructions will exceed the maximum expected limit of 2.
+	 * To prevent buffer overflow, we avoid generating them.
+	 * insn_la_mcount will not be used later in ftrace_make_call.
+	 */
+	if (uasm_in_compat_space_p(MCOUNT_ADDR)) {
+		/* la v1, _mcount */
+		v1 = 3;
+		buf = (u32 *)&insn_la_mcount[0];
+		UASM_i_LA(&buf, v1, MCOUNT_ADDR);
+	} else {
+		pr_warn("ftrace: mcount address beyond 32 bits is not supported (%lX)\n",
+			MCOUNT_ADDR);
+	}
 
 	/* jal (ftrace_caller + 8), jump over the first two instruction */
 	buf = (u32 *)&insn_jal_ftrace_caller;

@@ -189,6 +199,13 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 	unsigned int new;
 	unsigned long ip = rec->ip;
 
+	/* When the code to patch does not belong to the kernel code
+	 * space, we must use insn_la_mcount. However, if MCOUNT_ADDR
+	 * is not in compat space, insn_la_mcount is not usable.
+	 */
+	if (!core_kernel_text(ip) && !uasm_in_compat_space_p(MCOUNT_ADDR))
+		return -EFAULT;
+
 	new = core_kernel_text(ip) ? insn_jal_ftrace_caller : insn_la_mcount[0];
 
 #ifdef CONFIG_64BIT

index 5893ea4e382c..19b70928d6dc 100644
@@ -372,7 +372,8 @@ static void ip22_check_gio(int slotno, unsigned long addr, int irq)
 		gio_dev->resource.flags = IORESOURCE_MEM;
 		gio_dev->irq = irq;
 		dev_set_name(&gio_dev->dev, "%d", slotno);
-		gio_device_register(gio_dev);
+		if (gio_device_register(gio_dev))
+			gio_dev_put(gio_dev);
 	} else
 		printk(KERN_INFO "GIO: slot %d : Empty\n", slotno);
 }

index 53b3b2621457..78704927453a 100644
@@ -68,8 +68,8 @@ static int e_class = ELFCLASS32;
 #define PUT_16BE(off, v)(buf[off] = ((v) >> 8) & 0xff, \
 			 buf[(off) + 1] = (v) & 0xff)
 #define PUT_32BE(off, v)(PUT_16BE((off), (v) >> 16L), PUT_16BE((off) + 2, (v)))
-#define PUT_64BE(off, v)((PUT_32BE((off), (v) >> 32L), \
-			  PUT_32BE((off) + 4, (v))))
+#define PUT_64BE(off, v)((PUT_32BE((off), (unsigned long long)(v) >> 32L), \
+			  PUT_32BE((off) + 4, (unsigned long long)(v))))
 
 #define GET_16LE(off)	((buf[off]) + (buf[(off)+1] << 8))
 #define GET_32LE(off)	(GET_16LE(off) + (GET_16LE((off)+2U) << 16U))

@@ -78,7 +78,8 @@ static int e_class = ELFCLASS32;
 #define PUT_16LE(off, v) (buf[off] = (v) & 0xff, \
 			  buf[(off) + 1] = ((v) >> 8) & 0xff)
 #define PUT_32LE(off, v) (PUT_16LE((off), (v)), PUT_16LE((off) + 2, (v) >> 16L))
-#define PUT_64LE(off, v) (PUT_32LE((off), (v)), PUT_32LE((off) + 4, (v) >> 32L))
+#define PUT_64LE(off, v) (PUT_32LE((off), (unsigned long long)(v)), \
+			  PUT_32LE((off) + 4, (unsigned long long)(v) >> 32L))
 
 #define GET_16(off)	(e_data == ELFDATA2MSB ? GET_16BE(off) : GET_16LE(off))
 #define GET_32(off)	(e_data == ELFDATA2MSB ? GET_32BE(off) : GET_32LE(off))

index 6467ce29b1fa..d1b570ddbf98 100644
@@ -5,4 +5,12 @@
 /* crash kernel regions are Page size agliged */
 #define CRASH_ALIGN             PAGE_SIZE
 
+#ifdef CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
+static inline bool arch_add_crash_res_to_iomem(void)
+{
+	return false;
+}
+#define arch_add_crash_res_to_iomem arch_add_crash_res_to_iomem
+#endif
+
 #endif /* _ASM_POWERPC_CRASH_RESERVE_H */

index 7f63f1cdc6c3..ca00c4824e31 100644
@@ -20,6 +20,7 @@
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/udbg.h>
+#include <asm/setup.h>
 
 #define NO_SCROLL
 

@@ -463,7 +464,7 @@ static noinline void draw_byte(unsigned char c, long locX, long locY)
 {
 	unsigned char *base	= calc_base(locX << 3, locY << 4);
 	unsigned int font_index = c * 16;
-	const unsigned char *font	= font_sun_8x16.data + font_index;
+	const unsigned char *font = PTRRELOC(font_sun_8x16.data) + font_index;
 	int rb			= dispDeviceRowBytes;
 
 	rmci_maybe_on();

index 222aa326dace..825ab8a88f18 100644
@@ -202,6 +202,23 @@ static void kexec_prepare_cpus_wait(int wait_state)
 	mb();
 }
 
+
+/*
+ * The add_cpu() call in wake_offline_cpus() can fail as cpu_bootable()
+ * returns false for CPUs that fail the cpu_smt_thread_allowed() check
+ * or non primary threads if SMT is disabled. Re-enable SMT and set the
+ * number of SMT threads to threads per core.
+ */
+static void kexec_smt_reenable(void)
+{
+#if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT)
+	lock_device_hotplug();
+	cpu_smt_num_threads = threads_per_core;
+	cpu_smt_control = CPU_SMT_ENABLED;
+	unlock_device_hotplug();
+#endif
+}
+
 /*
  * We need to make sure each present CPU is online.  The next kernel will scan
  * the device tree and assume primary threads are online and query secondary

@@ -216,6 +233,8 @@ static void wake_offline_cpus(void)
 {
 	int cpu = 0;
 
+	kexec_smt_reenable();
+
 	for_each_present_cpu(cpu) {
 		if (!cpu_online(cpu)) {
 			printk(KERN_INFO "kexec: Waking offline cpu %d.\n",

index 2cd28af50dd4..3d64a2251699 100644
@@ -15,6 +15,7 @@ struct ipl_pl_hdr {
 #define IPL_PL_FLAG_IPLPS	0x80
 #define IPL_PL_FLAG_SIPL	0x40
 #define IPL_PL_FLAG_IPLSR	0x20
+#define IPL_PL_FLAG_SBP		0x10
 
 /* IPL Parameter Block header */
 struct ipl_pb_hdr {

102 lines not on this page · raw message

index 9c9c66dc45f0..13d461712c99 100644
@@ -43,7 +43,9 @@
  * cares about its entry, so it's OK if another processor is modifying its
  * entry.
  */
-struct task_struct *cpu_tasks[NR_CPUS];
+struct task_struct *cpu_tasks[NR_CPUS] = {
+	[0 ... NR_CPUS - 1] = &init_task,
+};
 EXPORT_SYMBOL(cpu_tasks);
 
 void free_stack(unsigned long stack, int order)

index cfbbbf8500c3..ed2f67848a50 100644
@@ -239,8 +239,6 @@ static struct notifier_block panic_exit_notifier = {
 
 void uml_finishsetup(void)
 {
-	cpu_tasks[0] = &init_task;
-
 	atomic_notifier_chain_register(&panic_notifier_list,
 				       &panic_exit_notifier);
 

index b20661b8621d..8868f5f5379b 100644
@@ -763,7 +763,12 @@ static void amd_pmu_enable_all(int added)
 		if (!test_bit(idx, cpuc->active_mask))
 			continue;
 
-		amd_pmu_enable_event(cpuc->events[idx]);
+		/*
+		 * FIXME: cpuc->events[idx] can become NULL in a subtle race
+		 * condition with NMI->throttle->x86_pmu_stop().
+		 */
+		if (cpuc->events[idx])
+			amd_pmu_enable_event(cpuc->events[idx]);
 	}
 }
 

index 880ca15073ed..99017bb1031e 100644
@@ -10,7 +10,7 @@
 /*
  * Despite that some emulators terminate on UD2, we use it for WARN().
  */
-#define ASM_UD2		_ASM_BYTES(0x0f, 0x0b)
+#define ASM_UD2		__ASM_FORM(ud2)
 #define INSN_UD2	0x0b0f
 #define LEN_UD2		2
 

index 5a0d42464d44..4e55d1755846 100644
@@ -87,4 +87,11 @@ static inline void panic_if_irq_remap(const char *msg)
 }
 
 #endif /* CONFIG_IRQ_REMAP */
+
+#ifdef CONFIG_X86_POSTED_MSI
+void intel_ack_posted_msi_irq(struct irq_data *irqd);
+#else
+#define intel_ack_posted_msi_irq	NULL
+#endif
+
 #endif /* __X86_IRQ_REMAPPING_H */

index 974d64bf0a4d..b74ae7183f3a 100644
@@ -2387,7 +2387,6 @@ int kvm_pv_send_ipi(struct kvm *kvm, unsigned long ipi_bitmap_low,
 int kvm_add_user_return_msr(u32 msr);
 int kvm_find_user_return_msr(u32 msr);
 int kvm_set_user_return_msr(unsigned index, u64 val, u64 mask);
-void kvm_user_return_msr_update_cache(unsigned int index, u64 val);
 u64 kvm_get_user_return_msr(unsigned int slot);
 
 static inline bool kvm_is_supported_user_return_msr(u32 msr)

index 50f75467f73d..b5dec859bc75 100644
@@ -187,12 +187,12 @@ convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
 extern void send_sigtrap(struct pt_regs *regs, int error_code, int si_code);
 
 
-static inline unsigned long regs_return_value(struct pt_regs *regs)
+static __always_inline unsigned long regs_return_value(struct pt_regs *regs)
 {
 	return regs->ax;
 }
 
-static inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc)
+static __always_inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc)
 {
 	regs->ax = rc;
 }

@@ -277,34 +277,34 @@ static __always_inline bool ip_within_syscall_gap(struct pt_regs *regs)
 }
 #endif
 
-static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
+static __always_inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
 {
 	return regs->sp;
 }
 
-static inline unsigned long instruction_pointer(struct pt_regs *regs)
+static __always_inline unsigned long instruction_pointer(struct pt_regs *regs)
 {
 	return regs->ip;
 }
 
-static inline void instruction_pointer_set(struct pt_regs *regs,
-		unsigned long val)
+static __always_inline
+void instruction_pointer_set(struct pt_regs *regs, unsigned long val)
 {
 	regs->ip = val;
 }
 
-static inline unsigned long frame_pointer(struct pt_regs *regs)
+static __always_inline unsigned long frame_pointer(struct pt_regs *regs)
 {
 	return regs->bp;
 }
 
-static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+static __always_inline unsigned long user_stack_pointer(struct pt_regs *regs)
 {
 	return regs->sp;
 }
 
-static inline void user_stack_pointer_set(struct pt_regs *regs,
-		unsigned long val)
+static __always_inline
+void user_stack_pointer_set(struct pt_regs *regs, unsigned long val)
 {
 	regs->sp = val;
 }

index f4a007616468..61eaa1774931 100644
@@ -85,7 +85,8 @@ void cmci_storm_end(unsigned int bank)
 {
 	struct mca_storm_desc *storm = this_cpu_ptr(&storm_desc);
 
-	__clear_bit(bank, this_cpu_ptr(mce_poll_banks));
+	if (!mce_flags.amd_threshold)
+		__clear_bit(bank, this_cpu_ptr(mce_poll_banks));
 	storm->banks[bank].history = 0;
 	storm->banks[bank].in_storm_mode = false;
 

index f75c140906d0..539edd6d6dc8 100644
@@ -136,7 +136,7 @@ bool __init microcode_loader_disabled(void)
 	return dis_ucode_ldr;
 }
 
-static void early_parse_cmdline(void)
+static void __init early_parse_cmdline(void)
 {
 	char cmd_buf[64] = {};
 	char *s, *p = cmd_buf;

index 28e4fd65c9da..5f54a207ace4 100644
@@ -1945,7 +1945,7 @@ static int dump_xsave_layout_desc(struct coredump_params *cprm)
 		};
 
 		if (!dump_emit(cprm, &xc, sizeof(xc)))
-			return 0;
+			return -1;
 
 		num_records++;
 	}

@@ -1983,7 +1983,7 @@ int elf_coredump_extra_notes_write(struct coredump_params *cprm)
 		return 1;
 
 	num_records = dump_xsave_layout_desc(cprm);
-	if (!num_records)
+	if (num_records < 0)
 		return 1;
 
 	/* Total size should be equal to the number of records */

index 10721a125226..59d38411a1d9 100644
@@ -396,6 +396,7 @@ DEFINE_IDTENTRY_SYSVEC_SIMPLE(sysvec_kvm_posted_intr_nested_ipi)
 
 /* Posted Interrupt Descriptors for coalesced MSIs to be posted */
 DEFINE_PER_CPU_ALIGNED(struct pi_desc, posted_msi_pi_desc);
+static DEFINE_PER_CPU_CACHE_HOT(bool, posted_msi_handler_active);
 
 void intel_posted_msi_init(void)
 {

@@ -413,6 +414,25 @@ void intel_posted_msi_init(void)
 	this_cpu_write(posted_msi_pi_desc.ndst, destination);
 }
 
+void intel_ack_posted_msi_irq(struct irq_data *irqd)
+{
+	irq_move_irq(irqd);
+
+	/*
+	 * Handle the rare case that irq_retrigger() raised the actual
+	 * assigned vector on the target CPU, which means that it was not
+	 * invoked via the posted MSI handler below. In that case APIC EOI
+	 * is required as otherwise the ISR entry becomes stale and lower
+	 * priority interrupts are never going to be delivered after that.
+	 *
+	 * If the posted handler invoked the device interrupt handler then
+	 * the EOI would be premature because it would acknowledge the
+	 * posted vector.
+	 */
+	if (unlikely(!__this_cpu_read(posted_msi_handler_active)))
+		apic_eoi();
+}
+
 static __always_inline bool handle_pending_pir(unsigned long *pir, struct pt_regs *regs)
 {
 	unsigned long pir_copy[NR_PIR_WORDS];

@@ -445,6 +465,8 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_posted_msi_notification)
 
 	pid = this_cpu_ptr(&posted_msi_pi_desc);
 
+	/* Mark the handler active for intel_ack_posted_msi_irq() */
+	__this_cpu_write(posted_msi_handler_active, true);
 	inc_irq_stat(posted_msi_notification_count);
 	irq_enter();
 

@@ -473,6 +495,7 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_posted_msi_notification)
 
 	apic_eoi();
 	irq_exit();
+	__this_cpu_write(posted_msi_handler_active, false);
 	set_irq_regs(old_regs);
 }
 #endif /* X86_POSTED_MSI */

index 52524e0ca97f..913ffb995279 100644
@@ -509,11 +509,18 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2,
 	u32 vcpu_caps[NR_KVM_CPU_CAPS];
 	int r;
 
+	/*
+	 * Apply pending runtime CPUID updates to the current CPUID entries to
+	 * avoid false positives due to mismatches on KVM-owned feature flags.
+	 */
+	if (vcpu->arch.cpuid_dynamic_bits_dirty)
+		kvm_update_cpuid_runtime(vcpu);
+
 	/*
 	 * Swap the existing (old) entries with the incoming (new) entries in
 	 * order to massage the new entries, e.g. to account for dynamic bits
-	 * that KVM controls, without clobbering the current guest CPUID, which
-	 * KVM needs to preserve in order to unwind on failure.
+	 * that KVM controls, without losing the current guest CPUID, which KVM
+	 * needs to preserve in order to unwind on failure.
 	 *
 	 * Similarly, save the vCPU's current cpu_caps so that the capabilities
 	 * can be updated alongside the CPUID entries when performing runtime

index 0ae7f913d782..8b6ec3304100 100644
@@ -2131,15 +2131,33 @@ static void advance_periodic_target_expiration(struct kvm_lapic *apic)
 	ktime_t delta;
 
 	/*
-	 * Synchronize both deadlines to the same time source or
-	 * differences in the periods (caused by differences in the
-	 * underlying clocks or numerical approximation errors) will
-	 * cause the two to drift apart over time as the errors
-	 * accumulate.
+	 * Use kernel time as the time source for both the hrtimer deadline and
+	 * TSC-based deadline so that they stay synchronized.  Computing each
+	 * deadline independently will cause the two deadlines to drift apart
+	 * over time as differences in the periods accumulate, e.g. due to
+	 * differences in the underlying clocks or numerical approximation errors.
 	 */
 	apic->lapic_timer.target_expiration =
 		ktime_add_ns(apic->lapic_timer.target_expiration,
 				apic->lapic_timer.period);
+
+	/*
+	 * If the new expiration is in the past, e.g. because userspace stopped
+	 * running the VM for an extended duration, then force the expiration
+	 * to "now" and don't try to play catch-up with the missed events.  KVM
+	 * will only deliver a single interrupt regardless of how many events
+	 * are pending, i.e. restarting the timer with an expiration in the
+	 * past will do nothing more than waste host cycles, and can even lead
+	 * to a hard lockup in extreme cases.
+	 */
+	if (ktime_before(apic->lapic_timer.target_expiration, now))
+		apic->lapic_timer.target_expiration = now;
+
+	/*
+	 * Note, ensuring the expiration isn't in the past also prevents delta
+	 * from going negative, which could cause the TSC deadline to become
+	 * excessively large due to it an unsigned value.
+	 */
 	delta = ktime_sub(apic->lapic_timer.target_expiration, now);
 	apic->lapic_timer.tscdeadline = kvm_read_l1_tsc(apic->vcpu, tscl) +
 		nsec_to_cycles(apic->vcpu, delta);

@@ -2970,9 +2988,9 @@ static enum hrtimer_restart apic_timer_fn(struct hrtimer *data)
 
 	apic_timer_expired(apic, true);
 
-	if (lapic_is_periodic(apic)) {
+	if (lapic_is_periodic(apic) && !WARN_ON_ONCE(!apic->lapic_timer.period)) {
 		advance_periodic_target_expiration(apic);
-		hrtimer_add_expires_ns(&ktimer->timer, ktimer->period);
+		hrtimer_set_expires(&ktimer->timer, ktimer->target_expiration);
 		return HRTIMER_RESTART;
 	} else
 		return HRTIMER_NORESTART;

index da6e80b3ac35..e56c9b37e2b5 100644
@@ -613,6 +613,7 @@ static void nested_vmcb02_prepare_save(struct vcpu_svm *svm, struct vmcb *vmcb12
 	struct kvm_vcpu *vcpu = &svm->vcpu;
 
 	nested_vmcb02_compute_g_pat(svm);
+	vmcb_mark_dirty(vmcb02, VMCB_NPT);
 
 	/* Load the nested guest state */
 	if (svm->nested.vmcb12_gpa != svm->nested.last_vmcb12_gpa) {

@@ -751,6 +752,7 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm,
 	vmcb02->control.nested_ctl = vmcb01->control.nested_ctl;
 	vmcb02->control.iopm_base_pa = vmcb01->control.iopm_base_pa;
 	vmcb02->control.msrpm_base_pa = vmcb01->control.msrpm_base_pa;
+	vmcb_mark_dirty(vmcb02, VMCB_PERM_MAP);
 
 	/*
 	 * Stash vmcb02's counter if the guest hasn't moved past the guilty

@@ -983,7 +985,7 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)
 	if (!nested_vmcb_check_save(vcpu) ||
 	    !nested_vmcb_check_controls(vcpu)) {
 		vmcb12->control.exit_code    = SVM_EXIT_ERR;
-		vmcb12->control.exit_code_hi = 0;
+		vmcb12->control.exit_code_hi = -1u;
 		vmcb12->control.exit_info_1  = 0;
 		vmcb12->control.exit_info_2  = 0;
 		goto out;

@@ -1016,7 +1018,7 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)
 	svm->soft_int_injected = false;
 
 	svm->vmcb->control.exit_code    = SVM_EXIT_ERR;
-	svm->vmcb->control.exit_code_hi = 0;
+	svm->vmcb->control.exit_code_hi = -1u;
 	svm->vmcb->control.exit_info_1  = 0;
 	svm->vmcb->control.exit_info_2  = 0;
 

73 lines not on this page · raw message

index dd78e6402345..e66a16e59b1a 100644
@@ -764,9 +764,10 @@ int nested_svm_vmexit(struct vcpu_svm *svm);
 
 static inline int nested_svm_simple_vmexit(struct vcpu_svm *svm, u32 exit_code)
 {
-	svm->vmcb->control.exit_code   = exit_code;
-	svm->vmcb->control.exit_info_1 = 0;
-	svm->vmcb->control.exit_info_2 = 0;
+	svm->vmcb->control.exit_code	= exit_code;
+	svm->vmcb->control.exit_code_hi	= 0;
+	svm->vmcb->control.exit_info_1	= 0;
+	svm->vmcb->control.exit_info_2	= 0;
 	return nested_svm_vmexit(svm);
 }
 

index bcea087b642f..1725c6a94f99 100644
@@ -19,6 +19,7 @@
 #include "trace.h"
 #include "vmx.h"
 #include "smm.h"
+#include "x86_ops.h"
 
 static bool __read_mostly enable_shadow_vmcs = 1;
 module_param_named(enable_shadow_vmcs, enable_shadow_vmcs, bool, S_IRUGO);

@@ -5216,7 +5217,7 @@ void __nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 vm_exit_reason,
 
 	if (vmx->nested.update_vmcs01_apicv_status) {
 		vmx->nested.update_vmcs01_apicv_status = false;
-		kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
+		vmx_refresh_apicv_exec_ctrl(vcpu);
 	}
 
 	if (vmx->nested.update_vmcs01_hwapic_isr) {

95 lines not on this page · raw message

index ca39a9391db1..7f258870dc41 100644
@@ -67,7 +67,6 @@ struct vcpu_tdx {
 	u64 vp_enter_ret;
 
 	enum vcpu_tdx_state state;
-	bool guest_entered;
 
 	u64 map_gpa_next;
 	u64 map_gpa_end;

index e6f2e34ec97d..19d2d6d9e64a 100644
@@ -681,15 +681,6 @@ int kvm_set_user_return_msr(unsigned slot, u64 value, u64 mask)
 }
 EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_set_user_return_msr);
 
-void kvm_user_return_msr_update_cache(unsigned int slot, u64 value)
-{
-	struct kvm_user_return_msrs *msrs = this_cpu_ptr(user_return_msrs);
-
-	msrs->values[slot].curr = value;
-	kvm_user_return_register_notifier(msrs);
-}
-EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_user_return_msr_update_cache);
-
 u64 kvm_get_user_return_msr(unsigned int slot)
 {
 	return this_cpu_ptr(user_return_msrs)->values[slot].curr;

@@ -1045,6 +1036,13 @@ bool kvm_require_dr(struct kvm_vcpu *vcpu, int dr)
 }
 EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_require_dr);
 
+static bool kvm_pv_async_pf_enabled(struct kvm_vcpu *vcpu)
+{
+	u64 mask = KVM_ASYNC_PF_ENABLED | KVM_ASYNC_PF_DELIVERY_AS_INT;
+
+	return (vcpu->arch.apf.msr_en_val & mask) == mask;
+}
+
 static inline u64 pdptr_rsvd_bits(struct kvm_vcpu *vcpu)
 {
 	return vcpu->arch.reserved_gpa_bits | rsvd_bits(5, 8) | rsvd_bits(1, 2);

@@ -1137,15 +1135,20 @@ void kvm_post_set_cr0(struct kvm_vcpu *vcpu, unsigned long old_cr0, unsigned lon
 	}
 
 	if ((cr0 ^ old_cr0) & X86_CR0_PG) {
-		kvm_clear_async_pf_completion_queue(vcpu);
-		kvm_async_pf_hash_reset(vcpu);
-
 		/*
 		 * Clearing CR0.PG is defined to flush the TLB from the guest's
 		 * perspective.
 		 */
 		if (!(cr0 & X86_CR0_PG))
 			kvm_make_request(KVM_REQ_TLB_FLUSH_GUEST, vcpu);
+		/*
+		 * Check for async #PF completion events when enabling paging,
+		 * as the vCPU may have previously encountered async #PFs (it's
+		 * entirely legal for the guest to toggle paging on/off without
+		 * waiting for the async #PF queue to drain).
+		 */
+		else if (kvm_pv_async_pf_enabled(vcpu))
+			kvm_make_request(KVM_REQ_APF_READY, vcpu);
 	}
 
 	if ((cr0 ^ old_cr0) & KVM_MMU_CR0_ROLE_BITS)

@@ -3650,13 +3653,6 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 	return 0;
 }
 
-static inline bool kvm_pv_async_pf_enabled(struct kvm_vcpu *vcpu)
-{
-	u64 mask = KVM_ASYNC_PF_ENABLED | KVM_ASYNC_PF_DELIVERY_AS_INT;
-
-	return (vcpu->arch.apf.msr_en_val & mask) == mask;
-}
-
 static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
 {
 	gpa_t gpa = data & ~0x3f;

index 4806cc28d7ca..b74ff8bc7f2a 100644
@@ -108,7 +108,7 @@ static int xen_cpu_dead_pv(unsigned int cpu);
  * calls.
  */
 DEFINE_PER_CPU(bool, xen_in_preemptible_hcall);
-EXPORT_SYMBOL_GPL(xen_in_preemptible_hcall);
+EXPORT_PER_CPU_SYMBOL_GPL(xen_in_preemptible_hcall);
 
 /*
  * In case of scheduling the flag must be cleared and restored after

index 4a8d3d96bfe4..6e54b1d3d8bc 100644
@@ -7181,7 +7181,7 @@ static void bfq_exit_queue(struct elevator_queue *e)
 
 	blk_stat_disable_accounting(bfqd->queue);
 	blk_queue_flag_clear(QUEUE_FLAG_DISABLE_WBT_DEF, bfqd->queue);
-	set_bit(ELEVATOR_FLAG_ENABLE_WBT_ON_EXIT, &e->flags);
+	wbt_enable_default(bfqd->queue->disk);
 
 	kfree(bfqd);
 }

170 lines not on this page · raw message

index 8e21a6b1415d..02c40a72e959 100644
@@ -19,18 +19,52 @@ void __blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
 void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
 
 int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e,
-		struct elevator_tags *et);
+		struct elevator_resources *res);
 void blk_mq_exit_sched(struct request_queue *q, struct elevator_queue *e);
 void blk_mq_sched_free_rqs(struct request_queue *q);
 
 struct elevator_tags *blk_mq_alloc_sched_tags(struct blk_mq_tag_set *set,
 		unsigned int nr_hw_queues, unsigned int nr_requests);
-int blk_mq_alloc_sched_tags_batch(struct xarray *et_table,
+int blk_mq_alloc_sched_res(struct request_queue *q,
+		struct elevator_type *type,
+		struct elevator_resources *res,
+		unsigned int nr_hw_queues);
+int blk_mq_alloc_sched_res_batch(struct xarray *elv_tbl,
 		struct blk_mq_tag_set *set, unsigned int nr_hw_queues);
+int blk_mq_alloc_sched_ctx_batch(struct xarray *elv_tbl,
+		struct blk_mq_tag_set *set);
+void blk_mq_free_sched_ctx_batch(struct xarray *elv_tbl);
 void blk_mq_free_sched_tags(struct elevator_tags *et,
 		struct blk_mq_tag_set *set);
-void blk_mq_free_sched_tags_batch(struct xarray *et_table,
+void blk_mq_free_sched_res(struct elevator_resources *res,
+		struct elevator_type *type,
+		struct blk_mq_tag_set *set);
+void blk_mq_free_sched_res_batch(struct xarray *et_table,
 		struct blk_mq_tag_set *set);
+/*
+ * blk_mq_alloc_sched_data() - Allocates scheduler specific data
+ * Returns:
+ *         - Pointer to allocated data on success
+ *         - NULL if no allocation needed
+ *         - ERR_PTR(-ENOMEM) in case of failure
+ */
+static inline void *blk_mq_alloc_sched_data(struct request_queue *q,
+		struct elevator_type *e)
+{
+	void *sched_data;
+
+	if (!e || !e->ops.alloc_sched_data)
+		return NULL;
+
+	sched_data = e->ops.alloc_sched_data(q);
+	return (sched_data) ?: ERR_PTR(-ENOMEM);
+}
+
+static inline void blk_mq_free_sched_data(struct elevator_type *e, void *data)
+{
+	if (e && e->ops.free_sched_data)
+		e->ops.free_sched_data(data);
+}
 
 static inline void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx)
 {

109 lines not on this page · raw message

index 76c47fe9b8d6..e0a70d26972b 100644
@@ -143,21 +143,22 @@ queue_ra_store(struct gendisk *disk, const char *page, size_t count)
 {
 	unsigned long ra_kb;
 	ssize_t ret;
-	unsigned int memflags;
 	struct request_queue *q = disk->queue;
 
 	ret = queue_var_store(&ra_kb, page, count);
 	if (ret < 0)
 		return ret;
 	/*
-	 * ->ra_pages is protected by ->limits_lock because it is usually
-	 * calculated from the queue limits by queue_limits_commit_update.
+	 * The ->ra_pages change below is protected by ->limits_lock because it
+	 * is usually calculated from the queue limits by
+	 * queue_limits_commit_update().
+	 *
+	 * bdi->ra_pages reads are not serialized against bdi->ra_pages writes.
+	 * Use WRITE_ONCE() to write bdi->ra_pages once.
 	 */
 	mutex_lock(&q->limits_lock);
-	memflags = blk_mq_freeze_queue(q);
-	disk->bdi->ra_pages = ra_kb >> (PAGE_SHIFT - 10);
+	WRITE_ONCE(disk->bdi->ra_pages, ra_kb >> (PAGE_SHIFT - 10));
 	mutex_unlock(&q->limits_lock);
-	blk_mq_unfreeze_queue(q, memflags);
 
 	return ret;
 }

@@ -375,21 +376,18 @@ static ssize_t queue_nomerges_store(struct gendisk *disk, const char *page,
 				    size_t count)
 {
 	unsigned long nm;
-	unsigned int memflags;
 	struct request_queue *q = disk->queue;
 	ssize_t ret = queue_var_store(&nm, page, count);
 
 	if (ret < 0)
 		return ret;
 
-	memflags = blk_mq_freeze_queue(q);
 	blk_queue_flag_clear(QUEUE_FLAG_NOMERGES, q);
 	blk_queue_flag_clear(QUEUE_FLAG_NOXMERGES, q);
 	if (nm == 2)
 		blk_queue_flag_set(QUEUE_FLAG_NOMERGES, q);
 	else if (nm)
 		blk_queue_flag_set(QUEUE_FLAG_NOXMERGES, q);
-	blk_mq_unfreeze_queue(q, memflags);
 
 	return ret;
 }

@@ -409,7 +407,6 @@ queue_rq_affinity_store(struct gendisk *disk, const char *page, size_t count)
 #ifdef CONFIG_SMP
 	struct request_queue *q = disk->queue;
 	unsigned long val;
-	unsigned int memflags;
 
 	ret = queue_var_store(&val, page, count);
 	if (ret < 0)

@@ -421,7 +418,6 @@ queue_rq_affinity_store(struct gendisk *disk, const char *page, size_t count)
 	 * are accessed individually using atomic test_bit operation. So we
 	 * don't grab any lock while updating these flags.
 	 */
-	memflags = blk_mq_freeze_queue(q);
 	if (val == 2) {
 		blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, q);
 		blk_queue_flag_set(QUEUE_FLAG_SAME_FORCE, q);

@@ -432,7 +428,6 @@ queue_rq_affinity_store(struct gendisk *disk, const char *page, size_t count)
 		blk_queue_flag_clear(QUEUE_FLAG_SAME_COMP, q);
 		blk_queue_flag_clear(QUEUE_FLAG_SAME_FORCE, q);
 	}
-	blk_mq_unfreeze_queue(q, memflags);
 #endif
 	return ret;
 }

@@ -446,11 +441,9 @@ static ssize_t queue_poll_delay_store(struct gendisk *disk, const char *page,
 static ssize_t queue_poll_store(struct gendisk *disk, const char *page,
 				size_t count)
 {
-	unsigned int memflags;
 	ssize_t ret = count;
 	struct request_queue *q = disk->queue;
 
-	memflags = blk_mq_freeze_queue(q);
 	if (!(q->limits.features & BLK_FEAT_POLL)) {
 		ret = -EINVAL;
 		goto out;

@@ -459,7 +452,6 @@ static ssize_t queue_poll_store(struct gendisk *disk, const char *page,
 	pr_info_ratelimited("writes to the poll attribute are ignored.\n");
 	pr_info_ratelimited("please use driver specific parameters instead.\n");
 out:
-	blk_mq_unfreeze_queue(q, memflags);
 	return ret;
 }
 

@@ -472,7 +464,7 @@ static ssize_t queue_io_timeout_show(struct gendisk *disk, char *page)
 static ssize_t queue_io_timeout_store(struct gendisk *disk, const char *page,
 				  size_t count)
 {
-	unsigned int val, memflags;
+	unsigned int val;
 	int err;
 	struct request_queue *q = disk->queue;
 

@@ -480,9 +472,7 @@ static ssize_t queue_io_timeout_store(struct gendisk *disk, const char *page,
 	if (err || val == 0)
 		return -EINVAL;
 
-	memflags = blk_mq_freeze_queue(q);
 	blk_queue_rq_timeout(q, msecs_to_jiffies(val));
-	blk_mq_unfreeze_queue(q, memflags);
 
 	return count;
 }

@@ -942,7 +932,7 @@ int blk_register_queue(struct gendisk *disk)
 		elevator_set_default(q);
 
 	blk_queue_flag_set(QUEUE_FLAG_REGISTERED, q);
-	wbt_enable_default(disk);
+	wbt_init_enable_default(disk);
 
 	/* Now everything is ready and send out KOBJ_ADD uevent */
 	kobject_uevent(&disk->queue_kobj, KOBJ_ADD);

index eb8037bae0bd..0974875f77bd 100644
@@ -699,7 +699,7 @@ static void wbt_requeue(struct rq_qos *rqos, struct request *rq)
 /*
  * Enable wbt if defaults are configured that way
  */
-void wbt_enable_default(struct gendisk *disk)
+static bool __wbt_enable_default(struct gendisk *disk)
 {
 	struct request_queue *q = disk->queue;
 	struct rq_qos *rqos;

@@ -716,19 +716,31 @@ void wbt_enable_default(struct gendisk *disk)
 		if (enable && RQWB(rqos)->enable_state == WBT_STATE_OFF_DEFAULT)
 			RQWB(rqos)->enable_state = WBT_STATE_ON_DEFAULT;
 		mutex_unlock(&disk->rqos_state_mutex);
-		return;
+		return false;
 	}
 	mutex_unlock(&disk->rqos_state_mutex);
 
 	/* Queue not registered? Maybe shutting down... */
 	if (!blk_queue_registered(q))
-		return;
+		return false;
 
 	if (queue_is_mq(q) && enable)
-		wbt_init(disk);
+		return true;
+	return false;
+}
+
+void wbt_enable_default(struct gendisk *disk)
+{
+	__wbt_enable_default(disk);
 }
 EXPORT_SYMBOL_GPL(wbt_enable_default);
 
+void wbt_init_enable_default(struct gendisk *disk)
+{
+	if (__wbt_enable_default(disk))
+		WARN_ON_ONCE(wbt_init(disk));
+}
+
 u64 wbt_default_latency_nsec(struct request_queue *q)
 {
 	/*

index e5fc653b9b76..925f22475738 100644
@@ -5,6 +5,7 @@
 #ifdef CONFIG_BLK_WBT
 
 int wbt_init(struct gendisk *disk);
+void wbt_init_enable_default(struct gendisk *disk);
 void wbt_disable_default(struct gendisk *disk);
 void wbt_enable_default(struct gendisk *disk);
 

@@ -16,6 +17,10 @@ u64 wbt_default_latency_nsec(struct request_queue *);
 
 #else
 
+static inline void wbt_init_enable_default(struct gendisk *disk)
+{
+}
+
 static inline void wbt_disable_default(struct gendisk *disk)
 {
 }

77 lines not on this page · raw message

index 170794632135..a7992680f9e1 100644
@@ -11,8 +11,7 @@
 #include <xen/xen.h>
 #include "blk-crypto-internal.h"
 
-struct elevator_type;
-struct elevator_tags;
+struct elv_change_ctx;
 
 /*
  * Default upper limit for the software max_sectors limit used for regular I/Os.

@@ -333,8 +332,8 @@ bool blk_bio_list_merge(struct request_queue *q, struct list_head *list,
 
 bool blk_insert_flush(struct request *rq);
 
-void elv_update_nr_hw_queues(struct request_queue *q, struct elevator_type *e,
-		struct elevator_tags *t);
+void elv_update_nr_hw_queues(struct request_queue *q,
+		struct elv_change_ctx *ctx);
 void elevator_set_default(struct request_queue *q);
 void elevator_set_none(struct request_queue *q);
 

197 lines not on this page · raw message

index c4d20155065e..021726376042 100644
@@ -32,12 +32,36 @@ struct elevator_tags {
 	struct blk_mq_tags *tags[];
 };
 
+struct elevator_resources {
+	/* holds elevator data */
+	void *data;
+	/* holds elevator tags */
+	struct elevator_tags *et;
+};
+
+/* Holding context data for changing elevator */
+struct elv_change_ctx {
+	const char *name;
+	bool no_uevent;
+
+	/* for unregistering old elevator */
+	struct elevator_queue *old;
+	/* for registering new elevator */
+	struct elevator_queue *new;
+	/* store elevator type */
+	struct elevator_type *type;
+	/* store elevator resources */
+	struct elevator_resources res;
+};
+
 struct elevator_mq_ops {
 	int (*init_sched)(struct request_queue *, struct elevator_queue *);
 	void (*exit_sched)(struct elevator_queue *);
 	int (*init_hctx)(struct blk_mq_hw_ctx *, unsigned int);
 	void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
 	void (*depth_updated)(struct request_queue *);
+	void *(*alloc_sched_data)(struct request_queue *);
+	void (*free_sched_data)(void *);
 
 	bool (*allow_merge)(struct request_queue *, struct request *, struct bio *);
 	bool (*bio_merge)(struct request_queue *, struct bio *, unsigned int);

@@ -132,7 +156,6 @@ struct elevator_queue
 
 #define ELEVATOR_FLAG_REGISTERED	0
 #define ELEVATOR_FLAG_DYING		1
-#define ELEVATOR_FLAG_ENABLE_WBT_ON_EXIT	2
 
 /*
  * block elevator interface

@@ -163,7 +186,7 @@ ssize_t elv_iosched_store(struct gendisk *disk, const char *page, size_t count);
 
 extern bool elv_bio_merge_ok(struct request *, struct bio *);
 struct elevator_queue *elevator_alloc(struct request_queue *,
-		struct elevator_type *, struct elevator_tags *);
+		struct elevator_type *, struct elevator_resources *);
 
 /*
  * Helper functions.

index 9bbc38d12792..bd3a6841e5b5 100644
@@ -90,7 +90,7 @@ bool set_capacity_and_notify(struct gendisk *disk, sector_t size)
 	    (disk->flags & GENHD_FL_HIDDEN))
 		return false;
 
-	pr_info("%s: detected capacity change from %lld to %lld\n",
+	pr_info_ratelimited("%s: detected capacity change from %lld to %lld\n",
 		disk->disk_name, capacity, size);
 
 	/*

index ca6fdcc6c54a..6c271e55f44d 100644
@@ -1212,15 +1212,14 @@ struct af_alg_async_req *af_alg_alloc_areq(struct sock *sk,
 	if (unlikely(!areq))
 		return ERR_PTR(-ENOMEM);
 
+	memset(areq, 0, areqlen);
+
 	ctx->inflight = true;
 
 	areq->areqlen = areqlen;
 	areq->sk = sk;
 	areq->first_rsgl.sgl.sgt.sgl = areq->first_rsgl.sgl.sgl;
-	areq->last_rsgl = NULL;
 	INIT_LIST_HEAD(&areq->rsgl_list);
-	areq->tsgl = NULL;
-	areq->tsgl_entries = 0;
 
 	return areq;
 }

index e3f1a4852737..4d3dfc60a16a 100644
@@ -416,9 +416,8 @@ static int hash_accept_parent_nokey(void *private, struct sock *sk)
 	if (!ctx)
 		return -ENOMEM;
 
-	ctx->result = NULL;
+	memset(ctx, 0, len);
 	ctx->len = len;
-	ctx->more = false;
 	crypto_init_wait(&ctx->wait);
 
 	ask->private = ctx;

index 10c41adac3b1..1a86e40c8372 100644
@@ -248,9 +248,8 @@ static int rng_accept_parent(void *private, struct sock *sk)
 	if (!ctx)
 		return -ENOMEM;
 
+	memset(ctx, 0, len);
 	ctx->len = len;
-	ctx->addtl = NULL;
-	ctx->addtl_len = 0;
 
 	/*
 	 * No seeding done at that point -- if multiple accepts are

110 lines not on this page · raw message

index 97064e943768..e3f302b9dee5 100644
@@ -52,7 +52,7 @@ acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function,
 	struct pcc_data *data;
 	struct acpi_pcc_info *ctx = handler_context;
 	struct pcc_mbox_chan *pcc_chan;
-	static acpi_status ret;
+	acpi_status ret;
 
 	data = kzalloc(sizeof(*data), GFP_KERNEL);
 	if (!data)

index a2ac06a26e92..5670ff5a43cd 100644
@@ -169,9 +169,12 @@ acpi_ns_walk_namespace(acpi_object_type type,
 
 	if (start_node == ACPI_ROOT_OBJECT) {
 		start_node = acpi_gbl_root_node;
-		if (!start_node) {
-			return_ACPI_STATUS(AE_NO_NAMESPACE);
-		}
+	}
+
+	/* Avoid walking the namespace if the StartNode is NULL */
+
+	if (!start_node) {
+		return_ACPI_STATUS(AE_NO_NAMESPACE);
 	}
 
 	/* Null child means "get first node" */

index 3bdeeee3414e..e66e20d1f31b 100644
@@ -1366,7 +1366,8 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
 	/* Are any of the regs PCC ?*/
 	if (CPC_IN_PCC(highest_reg) || CPC_IN_PCC(lowest_reg) ||
 		CPC_IN_PCC(lowest_non_linear_reg) || CPC_IN_PCC(nominal_reg) ||
-		CPC_IN_PCC(low_freq_reg) || CPC_IN_PCC(nom_freq_reg)) {
+		CPC_IN_PCC(low_freq_reg) || CPC_IN_PCC(nom_freq_reg) ||
+		CPC_IN_PCC(guaranteed_reg)) {
 		if (pcc_ss_id < 0) {
 			pr_debug("Invalid pcc_ss_id\n");
 			return -ENODEV;

index bedbab0e8e4e..0d73433c3889 100644
@@ -11,6 +11,7 @@
 #define _ACPI_FAN_H_
 
 #include <linux/kconfig.h>
+#include <linux/limits.h>
 
 #define ACPI_FAN_DEVICE_IDS	\
 	{"INT3404", }, /* Fan */ \

@@ -60,6 +61,38 @@ struct acpi_fan {
 	struct device_attribute fine_grain_control;
 };
 
+/**
+ * acpi_fan_speed_valid - Check if fan speed value is valid
+ * @speeed: Speed value returned by the ACPI firmware
+ *
+ * Check if the fan speed value returned by the ACPI firmware is valid. This function is
+ * necessary as ACPI firmware implementations can return 0xFFFFFFFF to signal that the
+ * ACPI fan does not support speed reporting. Additionally, some buggy ACPI firmware
+ * implementations return a value larger than the 32-bit integer value defined by
+ * the ACPI specification when using placeholder values. Such invalid values are also
+ * detected by this function.
+ *
+ * Returns: True if the fan speed value is valid, false otherwise.
+ */
+static inline bool acpi_fan_speed_valid(u64 speed)
+{
+	return speed < U32_MAX;
+}
+
+/**
+ * acpi_fan_power_valid - Check if fan power value is valid
+ * @power: Power value returned by the ACPI firmware
+ *
+ * Check if the fan power value returned by the ACPI firmware is valid.
+ * See acpi_fan_speed_valid() for details.
+ *
+ * Returns: True if the fan power value is valid, false otherwise.
+ */
+static inline bool acpi_fan_power_valid(u64 power)
+{
+	return power < U32_MAX;
+}
+
 int acpi_fan_get_fst(acpi_handle handle, struct acpi_fan_fst *fst);
 int acpi_fan_create_attributes(struct acpi_device *device);
 void acpi_fan_delete_attributes(struct acpi_device *device);

index 4b2c2007f2d7..47a02ef5a606 100644
@@ -15,10 +15,6 @@
 
 #include "fan.h"
 
-/* Returned when the ACPI fan does not support speed reporting */
-#define FAN_SPEED_UNAVAILABLE	U32_MAX
-#define FAN_POWER_UNAVAILABLE	U32_MAX
-
 static struct acpi_fan_fps *acpi_fan_get_current_fps(struct acpi_fan *fan, u64 control)
 {
 	unsigned int i;

@@ -77,7 +73,7 @@ static umode_t acpi_fan_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_
 			 * when the associated attribute should not be created.
 			 */
 			for (i = 0; i < fan->fps_count; i++) {
-				if (fan->fps[i].power != FAN_POWER_UNAVAILABLE)
+				if (acpi_fan_power_valid(fan->fps[i].power))
 					return 0444;
 			}
 

@@ -106,7 +102,7 @@ static int acpi_fan_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 	case hwmon_fan:
 		switch (attr) {
 		case hwmon_fan_input:
-			if (fst.speed == FAN_SPEED_UNAVAILABLE)
+			if (!acpi_fan_speed_valid(fst.speed))
 				return -ENODEV;
 
 			if (fst.speed > LONG_MAX)

@@ -134,7 +130,7 @@ static int acpi_fan_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
 			if (!fps)
 				return -EIO;
 
-			if (fps->power == FAN_POWER_UNAVAILABLE)
+			if (!acpi_fan_power_valid(fps->power))
 				return -ENODEV;
 
 			if (fps->power > LONG_MAX / MICROWATT_PER_MILLIWATT)

index b12057baaae7..19737f9e1e16 100644
@@ -1472,7 +1472,7 @@ static struct fwnode_handle *acpi_graph_get_next_endpoint(
 
 	if (!prev) {
 		do {
-			port = fwnode_get_next_child_node(fwnode, port);
+			port = acpi_get_next_subnode(fwnode, port);
 			/*
 			 * The names of the port nodes begin with "port@"
 			 * followed by the number of the port node and they also

@@ -1490,13 +1490,13 @@ static struct fwnode_handle *acpi_graph_get_next_endpoint(
 	if (!port)
 		return NULL;
 
-	endpoint = fwnode_get_next_child_node(port, prev);
+	endpoint = acpi_get_next_subnode(port, prev);
 	while (!endpoint) {
-		port = fwnode_get_next_child_node(fwnode, port);
+		port = acpi_get_next_subnode(fwnode, port);
 		if (!port)
 			break;
 		if (is_acpi_graph_node(port, "port"))
-			endpoint = fwnode_get_next_child_node(port, NULL);
+			endpoint = acpi_get_next_subnode(port, NULL);
 	}
 
 	/*

index c0e8b765522d..f23c3ed01810 100644
@@ -144,6 +144,7 @@ int tegra_ahb_enable_smmu(struct device_node *dn)
 	if (!dev)
 		return -EPROBE_DEFER;
 	ahb = dev_get_drvdata(dev);
+	put_device(dev);
 	val = gizmo_readl(ahb, AHB_ARBITRATION_XBAR_CTRL);
 	val |= AHB_ARBITRATION_XBAR_CTRL_SMMU_INIT_DONE;
 	gizmo_writel(ahb, val, AHB_ARBITRATION_XBAR_CTRL);

index 7607353a5e92..ef4dbb2b571c 100644
@@ -1362,8 +1362,12 @@ fn deferred_release(self: Arc<Self>) {
             work.into_arc().cancel();
         }
 
-        let delivered_deaths = take(&mut self.inner.lock().delivered_deaths);
-        drop(delivered_deaths);
+        // Clear delivered_deaths list.
+        //
+        // Scope ensures that MutexGuard is dropped while executing the body.
+        while let Some(delivered_death) = { self.inner.lock().delivered_deaths.pop_front() } {
+            drop(delivered_death);
+        }
 
         // Free any resources kept alive by allocated buffers.
         let omapping = self.inner.lock().mapping.take();

index 1b11a3cd4acc..e882b5269ebe 100644
@@ -1869,16 +1869,18 @@ void pm_runtime_init(struct device *dev)
  */
 void pm_runtime_reinit(struct device *dev)
 {
-	if (!pm_runtime_enabled(dev)) {
-		if (dev->power.runtime_status == RPM_ACTIVE)
-			pm_runtime_set_suspended(dev);
-		if (dev->power.irq_safe) {
-			spin_lock_irq(&dev->power.lock);
-			dev->power.irq_safe = 0;
-			spin_unlock_irq(&dev->power.lock);
-			if (dev->parent)
-				pm_runtime_put(dev->parent);
-		}
+	if (pm_runtime_enabled(dev))
+		return;
+
+	if (dev->power.runtime_status == RPM_ACTIVE)
+		pm_runtime_set_suspended(dev);
+
+	if (dev->power.irq_safe) {
+		spin_lock_irq(&dev->power.lock);
+		dev->power.irq_safe = 0;
+		spin_unlock_irq(&dev->power.lock);
+		if (dev->parent)
+			pm_runtime_put(dev->parent);
 	}
 	/*
 	 * Clear power.needs_force_resume in case it has been set by

index 5336c3c5ca36..c28786e0fe1c 100644
@@ -329,7 +329,7 @@ static bool initialized;
  * This default is used whenever the current disk size is unknown.
  * [Now it is rather a minimum]
  */
-#define MAX_DISK_SIZE 4		/* 3984 */
+#define MAX_DISK_SIZE (PAGE_SIZE / 1024)
 
 /*
  * globals used by 'result()'

index f1409e54010a..d1c354636315 100644
@@ -1423,9 +1423,11 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 		goto out_alloc;
 	}
 
-	ret = ida_alloc_max(&index_ida, (1 << (MINORBITS - RNBD_PART_BITS)) - 1,
-			    GFP_KERNEL);
-	if (ret < 0) {
+	dev->clt_device_id = ida_alloc_max(&index_ida,
+					   (1 << (MINORBITS - RNBD_PART_BITS)) - 1,
+					   GFP_KERNEL);
+	if (dev->clt_device_id < 0) {
+		ret = dev->clt_device_id;
 		pr_err("Failed to initialize device '%s' from session %s, allocating idr failed, err: %d\n",
 		       pathname, sess->sessname, ret);
 		goto out_queues;

@@ -1434,10 +1436,9 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 	dev->pathname = kstrdup(pathname, GFP_KERNEL);
 	if (!dev->pathname) {
 		ret = -ENOMEM;
-		goto out_queues;
+		goto out_ida;
 	}
 
-	dev->clt_device_id	= ret;
 	dev->sess		= sess;
 	dev->access_mode	= access_mode;
 	dev->nr_poll_queues	= nr_poll_queues;

@@ -1453,6 +1454,8 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 
 	return dev;
 
+out_ida:
+	ida_free(&index_ida, dev->clt_device_id);
 out_queues:
 	kfree(dev->hw_queues);
 out_alloc:

index a48e040abe63..fbc1ed766025 100644
@@ -112,7 +112,7 @@ struct rnbd_clt_dev {
 	struct rnbd_queue	*hw_queues;
 	u32			device_id;
 	/* local Idr index - used to track minor number allocations. */
-	u32			clt_device_id;
+	int			clt_device_id;
 	struct mutex		lock;
 	enum rnbd_clt_dev_state	dev_state;
 	refcount_t		refcount;

267 lines not on this page · raw message

index a423228e201b..39a425db670c 100644
@@ -177,7 +177,7 @@ static int zloop_update_seq_zone(struct zloop_device *zlo, unsigned int zone_no)
 		zone->wp = zone->start;
 	} else if (file_sectors == zlo->zone_capacity) {
 		zone->cond = BLK_ZONE_COND_FULL;
-		zone->wp = zone->start + zlo->zone_size;
+		zone->wp = ULLONG_MAX;
 	} else {
 		zone->cond = BLK_ZONE_COND_CLOSED;
 		zone->wp = zone->start + file_sectors;

@@ -326,7 +326,7 @@ static int zloop_finish_zone(struct zloop_device *zlo, unsigned int zone_no)
 	}
 
 	zone->cond = BLK_ZONE_COND_FULL;
-	zone->wp = zone->start + zlo->zone_size;
+	zone->wp = ULLONG_MAX;
 	clear_bit(ZLOOP_ZONE_SEQ_ERROR, &zone->flags);
 
  unlock:

@@ -407,6 +407,10 @@ static void zloop_rw(struct zloop_cmd *cmd)
 		mutex_lock(&zone->lock);
 
 		if (is_append) {
+			if (zone->cond == BLK_ZONE_COND_FULL) {
+				ret = -EIO;
+				goto unlock;
+			}
 			sector = zone->wp;
 			cmd->sector = sector;
 		}

@@ -433,8 +437,10 @@ static void zloop_rw(struct zloop_cmd *cmd)
 		 * copmpletes.
 		 */
 		zone->wp += nr_sectors;
-		if (zone->wp == zone_end)
+		if (zone->wp == zone_end) {
 			zone->cond = BLK_ZONE_COND_FULL;
+			zone->wp = ULLONG_MAX;
+		}
 	}
 
 	rq_for_each_bvec(tmp, rq, rq_iter)

index fa683bb7f0b4..b92bfd131567 100644
@@ -504,6 +504,8 @@ static const struct usb_device_id quirks_table[] = {
 	/* Realtek 8821CE Bluetooth devices */
 	{ USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x13d3, 0x3533), .driver_info = BTUSB_REALTEK |
+						     BTUSB_WIDEBAND_SPEECH },
 
 	/* Realtek 8822CE Bluetooth devices */
 	{ USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |

@@ -585,6 +587,8 @@ static const struct usb_device_id quirks_table[] = {
 	/* Realtek 8852BT/8852BE-VT Bluetooth devices */
 	{ USB_DEVICE(0x0bda, 0x8520), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x0489, 0xe12f), .driver_info = BTUSB_REALTEK |
+						     BTUSB_WIDEBAND_SPEECH },
 
 	/* Realtek 8922AE Bluetooth devices */
 	{ USB_DEVICE(0x0bda, 0x8922), .driver_info = BTUSB_REALTEK |

@@ -621,6 +625,8 @@ static const struct usb_device_id quirks_table[] = {
 	/* Additional MediaTek MT7920 Bluetooth devices */
 	{ USB_DEVICE(0x0489, 0xe134), .driver_info = BTUSB_MEDIATEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x0489, 0xe135), .driver_info = BTUSB_MEDIATEK |
+						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x13d3, 0x3620), .driver_info = BTUSB_MEDIATEK |
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x13d3, 0x3621), .driver_info = BTUSB_MEDIATEK |

@@ -685,6 +691,8 @@ static const struct usb_device_id quirks_table[] = {
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x0489, 0xe153), .driver_info = BTUSB_MEDIATEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x0489, 0xe170), .driver_info = BTUSB_MEDIATEK |
+						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x04ca, 0x3804), .driver_info = BTUSB_MEDIATEK |
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x04ca, 0x38e4), .driver_info = BTUSB_MEDIATEK |

@@ -781,6 +789,8 @@ static const struct usb_device_id quirks_table[] = {
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x2b89, 0x6275), .driver_info = BTUSB_REALTEK |
+						     BTUSB_WIDEBAND_SPEECH },
 
 	/* Additional Realtek 8821AE Bluetooth devices */
 	{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },

@@ -3261,6 +3271,7 @@ static const struct qca_device_info qca_devices_table[] = {
 
 static const struct qca_custom_firmware qca_custom_btfws[] = {
 	{ 0x00130201, 0x030A, "QCA2066" },
+	{ 0x00130201, 0x030B, "QCA2066" },
 	{ },
 };
 

index 5566ad11399e..610354ce7f8f 100644
@@ -48,6 +48,7 @@ enum sysc_soc {
 	SOC_UNKNOWN,
 	SOC_2420,
 	SOC_2430,
+	SOC_AM33,
 	SOC_3430,
 	SOC_AM35,
 	SOC_3630,

@@ -2912,6 +2913,7 @@ static void ti_sysc_idle(struct work_struct *work)
 static const struct soc_device_attribute sysc_soc_match[] = {
 	SOC_FLAG("OMAP242*", SOC_2420),
 	SOC_FLAG("OMAP243*", SOC_2430),
+	SOC_FLAG("AM33*", SOC_AM33),
 	SOC_FLAG("AM35*", SOC_AM35),
 	SOC_FLAG("OMAP3[45]*", SOC_3430),
 	SOC_FLAG("OMAP3[67]*", SOC_3630),

@@ -3117,10 +3119,15 @@ static int sysc_check_active_timer(struct sysc *ddata)
 	 * can be dropped if we stop supporting old beagleboard revisions
 	 * A to B4 at some point.
 	 */
-	if (sysc_soc->soc == SOC_3430 || sysc_soc->soc == SOC_AM35)
+	switch (sysc_soc->soc) {
+	case SOC_AM33:
+	case SOC_3430:
+	case SOC_AM35:
 		error = -ENXIO;
-	else
+		break;
+	default:
 		error = -EBUSY;
+	}
 
 	if ((ddata->cfg.quirks & SYSC_QUIRK_NO_RESET_ON_INIT) &&
 	    (ddata->cfg.quirks & SYSC_QUIRK_NO_IDLE))

index 9fed9706d9cd..c138c468f3a4 100644
@@ -835,7 +835,10 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		ret = -ENOTTY;
 		break;
 	}
-	Dummy = readb(apbs[IndexCard].RamIO + VERS);
+
+	if (cmd != 6)
+		Dummy = readb(apbs[IndexCard].RamIO + VERS);
+
 	kfree(adgl);
 	mutex_unlock(&ac_mutex);
 	return ret;

index 3700ab4eba3e..0a886399f9da 100644
@@ -599,7 +599,8 @@ static void __ipmi_bmc_unregister(struct ipmi_smi *intf);
 static int __ipmi_bmc_register(struct ipmi_smi *intf,
 			       struct ipmi_device_id *id,
 			       bool guid_set, guid_t *guid, int intf_num);
-static int __scan_channels(struct ipmi_smi *intf, struct ipmi_device_id *id);
+static int __scan_channels(struct ipmi_smi *intf,
+				struct ipmi_device_id *id, bool rescan);
 
 static void free_ipmi_user(struct kref *ref)
 {

@@ -2668,7 +2669,7 @@ static int __bmc_get_device_id(struct ipmi_smi *intf, struct bmc_device *bmc,
 		if (__ipmi_bmc_register(intf, &id, guid_set, &guid, intf_num))
 			need_waiter(intf); /* Retry later on an error. */
 		else
-			__scan_channels(intf, &id);
+			__scan_channels(intf, &id, false);
 
 
 		if (!intf_set) {

@@ -2688,7 +2689,7 @@ static int __bmc_get_device_id(struct ipmi_smi *intf, struct bmc_device *bmc,
 		goto out_noprocessing;
 	} else if (memcmp(&bmc->fetch_id, &bmc->id, sizeof(bmc->id)))
 		/* Version info changes, scan the channels again. */
-		__scan_channels(intf, &bmc->fetch_id);
+		__scan_channels(intf, &bmc->fetch_id, true);
 
 	bmc->dyn_id_expiry = jiffies + IPMI_DYN_DEV_ID_EXPIRY;
 

@@ -3417,8 +3418,6 @@ channel_handler(struct ipmi_smi *intf, struct ipmi_recv_msg *msg)
 			intf->channels_ready = true;
 			wake_up(&intf->waitq);
 		} else {
-			intf->channel_list = intf->wchannels + set;
-			intf->channels_ready = true;
 			rv = send_channel_info_cmd(intf, intf->curr_channel);
 		}
 

@@ -3440,10 +3439,17 @@ channel_handler(struct ipmi_smi *intf, struct ipmi_recv_msg *msg)
 /*
  * Must be holding intf->bmc_reg_mutex to call this.
  */
-static int __scan_channels(struct ipmi_smi *intf, struct ipmi_device_id *id)
+static int __scan_channels(struct ipmi_smi *intf,
+				struct ipmi_device_id *id,
+				bool rescan)
 {
 	int rv;
 
+	if (rescan) {
+		/* Clear channels_ready to force channels rescan. */
+		intf->channels_ready = false;
+	}
+
 	if (ipmi_version_major(id) > 1
 			|| (ipmi_version_major(id) == 1
 			    && ipmi_version_minor(id) >= 5)) {

@@ -3658,7 +3664,7 @@ int ipmi_add_smi(struct module         *owner,
 	}
 
 	mutex_lock(&intf->bmc_reg_mutex);
-	rv = __scan_channels(intf, &id);
+	rv = __scan_channels(intf, &id, false);
 	mutex_unlock(&intf->bmc_reg_mutex);
 	if (rv)
 		goto out_err_bmc_reg;

index e25daf2396d3..dfeb28866a32 100644
@@ -282,7 +282,6 @@ static void tpm_dev_release(struct device *dev)
 
 	kfree(chip->work_space.context_buf);
 	kfree(chip->work_space.session_buf);
-	kfree(chip->allocated_banks);
 #ifdef CONFIG_TCG_TPM2_HMAC
 	kfree(chip->auth);
 #endif

index cf64c7385105..b49a790f1bd5 100644
@@ -799,11 +799,6 @@ int tpm1_pm_suspend(struct tpm_chip *chip, u32 tpm_suspend_pcr)
  */
 int tpm1_get_pcr_allocation(struct tpm_chip *chip)
 {
-	chip->allocated_banks = kcalloc(1, sizeof(*chip->allocated_banks),
-					GFP_KERNEL);
-	if (!chip->allocated_banks)
-		return -ENOMEM;
-
 	chip->allocated_banks[0].alg_id = TPM_ALG_SHA1;
 	chip->allocated_banks[0].digest_size = hash_digest_size[HASH_ALGO_SHA1];
 	chip->allocated_banks[0].crypto_id = HASH_ALGO_SHA1;

index 7d77f6fbc152..58a8477cda85 100644
@@ -11,8 +11,11 @@
  * used by the kernel internally.
  */
 
+#include "linux/dev_printk.h"
+#include "linux/tpm.h"
 #include "tpm.h"
 #include <crypto/hash_info.h>
+#include <linux/unaligned.h>
 
 static bool disable_pcr_integrity;
 module_param(disable_pcr_integrity, bool, 0444);

@@ -187,7 +190,11 @@ int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
 	}
 
 	if (!disable_pcr_integrity) {
-		tpm_buf_append_name(chip, &buf, pcr_idx, NULL);
+		rc = tpm_buf_append_name(chip, &buf, pcr_idx, NULL);
+		if (rc) {
+			tpm_buf_destroy(&buf);
+			return rc;
+		}
 		tpm_buf_append_hmac_session(chip, &buf, 0, NULL, 0);
 	} else {
 		tpm_buf_append_handle(chip, &buf, pcr_idx);

@@ -202,8 +209,14 @@ int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
 			       chip->allocated_banks[i].digest_size);
 	}
 
-	if (!disable_pcr_integrity)
-		tpm_buf_fill_hmac_session(chip, &buf);
+	if (!disable_pcr_integrity) {
+		rc = tpm_buf_fill_hmac_session(chip, &buf);
+		if (rc) {
+			tpm_buf_destroy(&buf);
+			return rc;
+		}
+	}
+
 	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting extend a PCR value");
 	if (!disable_pcr_integrity)
 		rc = tpm_buf_check_hmac_response(chip, &buf, rc);

@@ -261,7 +274,12 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
 						| TPM2_SA_CONTINUE_SESSION,
 						NULL, 0);
 		tpm_buf_append_u16(&buf, num_bytes);
-		tpm_buf_fill_hmac_session(chip, &buf);
+		err = tpm_buf_fill_hmac_session(chip, &buf);
+		if (err) {
+			tpm_buf_destroy(&buf);
+			return err;
+		}
+
 		err = tpm_transmit_cmd(chip, &buf,
 				       offsetof(struct tpm2_get_random_out,
 						buffer),

@@ -538,11 +556,9 @@ ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip)
 
 	nr_possible_banks = be32_to_cpup(
 		(__be32 *)&buf.data[TPM_HEADER_SIZE + 5]);
-
-	chip->allocated_banks = kcalloc(nr_possible_banks,
-					sizeof(*chip->allocated_banks),
-					GFP_KERNEL);
-	if (!chip->allocated_banks) {
+	if (nr_possible_banks > TPM2_MAX_PCR_BANKS) {
+		pr_err("tpm: out of bank capacity: %u > %u\n",
+		       nr_possible_banks, TPM2_MAX_PCR_BANKS);
 		rc = -ENOMEM;
 		goto out;
 	}

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