Linux 5.12.14

index 1a5edf562e85..73ca7797b92f 100644
@@ -545,9 +545,11 @@ void notrace cpu_init(void)
 	 * In Thumb-2, msr with an immediate value is not allowed.
 	 */
 #ifdef CONFIG_THUMB2_KERNEL
-#define PLC	"r"
+#define PLC_l	"l"
+#define PLC_r	"r"
 #else
-#define PLC	"I"
+#define PLC_l	"I"
+#define PLC_r	"I"
 #endif
 
 	/*

@@ -569,15 +571,15 @@ void notrace cpu_init(void)
 	"msr	cpsr_c, %9"
 	    :
 	    : "r" (stk),
-	      PLC (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
+	      PLC_r (PSR_F_BIT | PSR_I_BIT | IRQ_MODE),
 	      "I" (offsetof(struct stack, irq[0])),
-	      PLC (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
+	      PLC_r (PSR_F_BIT | PSR_I_BIT | ABT_MODE),
 	      "I" (offsetof(struct stack, abt[0])),
-	      PLC (PSR_F_BIT | PSR_I_BIT | UND_MODE),
+	      PLC_r (PSR_F_BIT | PSR_I_BIT | UND_MODE),
 	      "I" (offsetof(struct stack, und[0])),
-	      PLC (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
+	      PLC_r (PSR_F_BIT | PSR_I_BIT | FIQ_MODE),
 	      "I" (offsetof(struct stack, fiq[0])),
-	      PLC (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
+	      PLC_l (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
 	    : "r14");
 #endif
 }

index 2b543163d90a..76c6034428be 100644
@@ -91,12 +91,16 @@ struct stack_frame {
 	CALL_ARGS_4(arg1, arg2, arg3, arg4);				\
 	register unsigned long r4 asm("6") = (unsigned long)(arg5)
 
-#define CALL_FMT_0 "=&d" (r2) :
-#define CALL_FMT_1 "+&d" (r2) :
-#define CALL_FMT_2 CALL_FMT_1 "d" (r3),
-#define CALL_FMT_3 CALL_FMT_2 "d" (r4),
-#define CALL_FMT_4 CALL_FMT_3 "d" (r5),
-#define CALL_FMT_5 CALL_FMT_4 "d" (r6),
+/*
+ * To keep this simple mark register 2-6 as being changed (volatile)
+ * by the called function, even though register 6 is saved/nonvolatile.
+ */
+#define CALL_FMT_0 "=&d" (r2)
+#define CALL_FMT_1 "+&d" (r2)
+#define CALL_FMT_2 CALL_FMT_1, "+&d" (r3)
+#define CALL_FMT_3 CALL_FMT_2, "+&d" (r4)
+#define CALL_FMT_4 CALL_FMT_3, "+&d" (r5)
+#define CALL_FMT_5 CALL_FMT_4, "+&d" (r6)
 
 #define CALL_CLOBBER_5 "0", "1", "14", "cc", "memory"
 #define CALL_CLOBBER_4 CALL_CLOBBER_5

@@ -118,7 +122,7 @@ struct stack_frame {
 		"	brasl	14,%[_fn]\n"				\
 		"	la	15,0(%[_prev])\n"			\
 		: [_prev] "=&a" (prev), CALL_FMT_##nr			\
-		  [_stack] "R" (stack),					\
+		: [_stack] "R" (stack),					\
 		  [_bc] "i" (offsetof(struct stack_frame, back_chain)),	\
 		  [_frame] "d" (frame),					\
 		  [_fn] "X" (fn) : CALL_CLOBBER_##nr);			\

index 90163e6184f5..080e7aed181f 100644
@@ -512,7 +512,6 @@ void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal)
 
 	/* No handlers present - check for system call restart */
 	clear_pt_regs_flag(regs, PIF_SYSCALL);
-	clear_pt_regs_flag(regs, PIF_SYSCALL_RESTART);
 	if (current->thread.system_call) {
 		regs->int_code = current->thread.system_call;
 		switch (regs->gprs[2]) {

index bfcc327acc6b..26aa2614ee35 100644
@@ -66,7 +66,10 @@ static void cpu_group_map(cpumask_t *dst, struct mask_info *info, unsigned int c
 {
 	static cpumask_t mask;
 
-	cpumask_copy(&mask, cpumask_of(cpu));
+	cpumask_clear(&mask);
+	if (!cpu_online(cpu))
+		goto out;
+	cpumask_set_cpu(cpu, &mask);
 	switch (topology_mode) {
 	case TOPOLOGY_MODE_HW:
 		while (info) {

@@ -83,10 +86,10 @@ static void cpu_group_map(cpumask_t *dst, struct mask_info *info, unsigned int c
 	default:
 		fallthrough;
 	case TOPOLOGY_MODE_SINGLE:
-		cpumask_copy(&mask, cpumask_of(cpu));
 		break;
 	}
 	cpumask_and(&mask, &mask, cpu_online_mask);
+out:
 	cpumask_copy(dst, &mask);
 }
 

@@ -95,7 +98,10 @@ static void cpu_thread_map(cpumask_t *dst, unsigned int cpu)
 	static cpumask_t mask;
 	int i;
 
-	cpumask_copy(&mask, cpumask_of(cpu));
+	cpumask_clear(&mask);
+	if (!cpu_online(cpu))
+		goto out;
+	cpumask_set_cpu(cpu, &mask);
 	if (topology_mode != TOPOLOGY_MODE_HW)
 		goto out;
 	cpu -= cpu % (smp_cpu_mtid + 1);

index 4efd39aacb9f..8767dc53b569 100644
@@ -127,8 +127,8 @@ static noinstr bool __do_fast_syscall_32(struct pt_regs *regs)
 		/* User code screwed up. */
 		regs->ax = -EFAULT;
 
-		instrumentation_end();
 		local_irq_disable();
+		instrumentation_end();
 		irqentry_exit_to_user_mode(regs);
 		return false;
 	}

@@ -266,15 +266,16 @@ __visible noinstr void xen_pv_evtchn_do_upcall(struct pt_regs *regs)
 	irqentry_state_t state = irqentry_enter(regs);
 	bool inhcall;
 
+	instrumentation_begin();
 	run_sysvec_on_irqstack_cond(__xen_pv_evtchn_do_upcall, regs);
 
 	inhcall = get_and_clear_inhcall();
 	if (inhcall && !WARN_ON_ONCE(state.exit_rcu)) {
-		instrumentation_begin();
 		irqentry_exit_cond_resched();
 		instrumentation_end();
 		restore_inhcall(inhcall);
 	} else {
+		instrumentation_end();
 		irqentry_exit(regs, state);
 	}
 }

index 18df17129695..7050a9ebd73f 100644
@@ -45,9 +45,11 @@
 #include "perf_event.h"
 
 struct x86_pmu x86_pmu __read_mostly;
+static struct pmu pmu;
 
 DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {
 	.enabled = 1,
+	.pmu = &pmu,
 };
 
 DEFINE_STATIC_KEY_FALSE(rdpmc_never_available_key);

@@ -380,10 +382,12 @@ int x86_reserve_hardware(void)
 	if (!atomic_inc_not_zero(&pmc_refcount)) {
 		mutex_lock(&pmc_reserve_mutex);
 		if (atomic_read(&pmc_refcount) == 0) {
-			if (!reserve_pmc_hardware())
+			if (!reserve_pmc_hardware()) {
 				err = -EBUSY;
-			else
+			} else {
 				reserve_ds_buffers();
+				reserve_lbr_buffers();
+			}
 		}
 		if (!err)
 			atomic_inc(&pmc_refcount);

@@ -724,16 +728,23 @@ void x86_pmu_enable_all(int added)
 	}
 }
 
-static struct pmu pmu;
-
 static inline int is_x86_event(struct perf_event *event)
 {
 	return event->pmu == &pmu;
 }
 
-struct pmu *x86_get_pmu(void)
+struct pmu *x86_get_pmu(unsigned int cpu)
 {
-	return &pmu;
+	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
+
+	/*
+	 * All CPUs of the hybrid type have been offline.
+	 * The x86_get_pmu() should not be invoked.
+	 */
+	if (WARN_ON_ONCE(!cpuc->pmu))
+		return &pmu;
+
+	return cpuc->pmu;
 }
 /*
  * Event scheduler state:

index 4c18e7fb58f5..77fe4fece679 100644
@@ -4879,7 +4879,7 @@ static void update_tfa_sched(void *ignored)
 	 * and if so force schedule out for all event types all contexts
 	 */
 	if (test_bit(3, cpuc->active_mask))
-		perf_pmu_resched(x86_get_pmu());
+		perf_pmu_resched(x86_get_pmu(smp_processor_id()));
 }
 
 static ssize_t show_sysctl_tfa(struct device *cdev,

index d32b302719fe..72df2f392c86 100644
@@ -2192,7 +2192,7 @@ void __init intel_ds_init(void)
 					PERF_SAMPLE_TIME;
 				x86_pmu.flags |= PMU_FL_PEBS_ALL;
 				pebs_qual = "-baseline";
-				x86_get_pmu()->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
+				x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_EXTENDED_REGS;
 			} else {
 				/* Only basic record supported */
 				x86_pmu.large_pebs_flags &=

@@ -2207,7 +2207,7 @@ void __init intel_ds_init(void)
 
 			if (x86_pmu.intel_cap.pebs_output_pt_available) {
 				pr_cont("PEBS-via-PT, ");
-				x86_get_pmu()->capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
+				x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_AUX_OUTPUT;
 			}
 
 			break;

index 21890dacfcfe..c9cd6ce0fa2a 100644
@@ -658,7 +658,6 @@ static inline bool branch_user_callstack(unsigned br_sel)
 
 void intel_pmu_lbr_add(struct perf_event *event)
 {
-	struct kmem_cache *kmem_cache = event->pmu->task_ctx_cache;
 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
 
 	if (!x86_pmu.lbr_nr)

@@ -696,16 +695,11 @@ void intel_pmu_lbr_add(struct perf_event *event)
 	perf_sched_cb_inc(event->ctx->pmu);
 	if (!cpuc->lbr_users++ && !event->total_time_running)
 		intel_pmu_lbr_reset();
-
-	if (static_cpu_has(X86_FEATURE_ARCH_LBR) &&
-	    kmem_cache && !cpuc->lbr_xsave &&
-	    (cpuc->lbr_users != cpuc->lbr_pebs_users))
-		cpuc->lbr_xsave = kmem_cache_alloc(kmem_cache, GFP_KERNEL);
 }
 
 void release_lbr_buffers(void)
 {
-	struct kmem_cache *kmem_cache = x86_get_pmu()->task_ctx_cache;
+	struct kmem_cache *kmem_cache;
 	struct cpu_hw_events *cpuc;
 	int cpu;
 

@@ -714,6 +708,7 @@ void release_lbr_buffers(void)
 
 	for_each_possible_cpu(cpu) {
 		cpuc = per_cpu_ptr(&cpu_hw_events, cpu);
+		kmem_cache = x86_get_pmu(cpu)->task_ctx_cache;
 		if (kmem_cache && cpuc->lbr_xsave) {
 			kmem_cache_free(kmem_cache, cpuc->lbr_xsave);
 			cpuc->lbr_xsave = NULL;

@@ -721,6 +716,27 @@ void release_lbr_buffers(void)
 	}
 }
 
+void reserve_lbr_buffers(void)
+{
+	struct kmem_cache *kmem_cache;
+	struct cpu_hw_events *cpuc;
+	int cpu;
+
+	if (!static_cpu_has(X86_FEATURE_ARCH_LBR))
+		return;
+
+	for_each_possible_cpu(cpu) {
+		cpuc = per_cpu_ptr(&cpu_hw_events, cpu);
+		kmem_cache = x86_get_pmu(cpu)->task_ctx_cache;
+		if (!kmem_cache || cpuc->lbr_xsave)
+			continue;
+
+		cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache,
+							GFP_KERNEL | __GFP_ZERO,
+							cpu_to_node(cpu));
+	}
+}
+
 void intel_pmu_lbr_del(struct perf_event *event)
 {
 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);

@@ -1609,7 +1625,7 @@ void intel_pmu_lbr_init_hsw(void)
 	x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
 	x86_pmu.lbr_sel_map  = hsw_lbr_sel_map;
 
-	x86_get_pmu()->task_ctx_cache = create_lbr_kmem_cache(size, 0);
+	x86_get_pmu(smp_processor_id())->task_ctx_cache = create_lbr_kmem_cache(size, 0);
 
 	if (lbr_from_signext_quirk_needed())
 		static_branch_enable(&lbr_from_quirk_key);

@@ -1629,7 +1645,7 @@ __init void intel_pmu_lbr_init_skl(void)
 	x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
 	x86_pmu.lbr_sel_map  = hsw_lbr_sel_map;
 
-	x86_get_pmu()->task_ctx_cache = create_lbr_kmem_cache(size, 0);
+	x86_get_pmu(smp_processor_id())->task_ctx_cache = create_lbr_kmem_cache(size, 0);
 
 	/*
 	 * SW branch filter usage:

@@ -1726,7 +1742,7 @@ static bool is_arch_lbr_xsave_available(void)
 
 void __init intel_pmu_arch_lbr_init(void)
 {
-	struct pmu *pmu = x86_get_pmu();
+	struct pmu *pmu = x86_get_pmu(smp_processor_id());
 	union cpuid28_eax eax;
 	union cpuid28_ebx ebx;
 	union cpuid28_ecx ecx;

index 53b2b5fc23bc..35cdece5644f 100644
@@ -327,6 +327,8 @@ struct cpu_hw_events {
 	int				n_pair; /* Large increment events */
 
 	void				*kfree_on_online[X86_PERF_KFREE_MAX];
+
+	struct pmu			*pmu;
 };
 
 #define __EVENT_CONSTRAINT_RANGE(c, e, n, m, w, o, f) {	\

@@ -905,7 +907,7 @@ static struct perf_pmu_events_ht_attr event_attr_##v = {		\
 	.event_str_ht	= ht,						\
 }
 
-struct pmu *x86_get_pmu(void);
+struct pmu *x86_get_pmu(unsigned int cpu);
 extern struct x86_pmu x86_pmu __read_mostly;
 
 static __always_inline struct x86_perf_task_context_opt *task_context_opt(void *ctx)

@@ -1135,6 +1137,8 @@ void reserve_ds_buffers(void);
 
 void release_lbr_buffers(void);
 
+void reserve_lbr_buffers(void);
+
 extern struct event_constraint bts_constraint;
 extern struct event_constraint vlbr_constraint;
 

@@ -1282,6 +1286,10 @@ static inline void release_lbr_buffers(void)
 {
 }
 
+static inline void reserve_lbr_buffers(void)
+{
+}
+
 static inline int intel_pmu_init(void)
 {
 	return 0;

index fdee23ea4e17..16bf4d4a8159 100644
@@ -204,6 +204,14 @@ static inline void copy_fxregs_to_kernel(struct fpu *fpu)
 		asm volatile("fxsaveq %[fx]" : [fx] "=m" (fpu->state.fxsave));
 }
 
+static inline void fxsave(struct fxregs_state *fx)
+{
+	if (IS_ENABLED(CONFIG_X86_32))
+		asm volatile( "fxsave %[fx]" : [fx] "=m" (*fx));
+	else
+		asm volatile("fxsaveq %[fx]" : [fx] "=m" (*fx));
+}
+
 /* These macros all use (%edi)/(%rdi) as the single memory argument. */
 #define XSAVE		".byte " REX_PREFIX "0x0f,0xae,0x27"
 #define XSAVEOPT	".byte " REX_PREFIX "0x0f,0xae,0x37"

@@ -268,28 +276,6 @@ static inline void copy_fxregs_to_kernel(struct fpu *fpu)
 		     : "D" (st), "m" (*st), "a" (lmask), "d" (hmask)	\
 		     : "memory")
 
-/*
- * This function is called only during boot time when x86 caps are not set
- * up and alternative can not be used yet.
- */
-static inline void copy_xregs_to_kernel_booting(struct xregs_state *xstate)
-{
-	u64 mask = xfeatures_mask_all;
-	u32 lmask = mask;
-	u32 hmask = mask >> 32;
-	int err;
-
-	WARN_ON(system_state != SYSTEM_BOOTING);
-
-	if (boot_cpu_has(X86_FEATURE_XSAVES))
-		XSTATE_OP(XSAVES, xstate, lmask, hmask, err);
-	else
-		XSTATE_OP(XSAVE, xstate, lmask, hmask, err);
-
-	/* We should never fault when copying to a kernel buffer: */
-	WARN_ON_FPU(err);
-}
-
 /*
  * This function is called only during boot time when x86 caps are not set
  * up and alternative can not be used yet.

index ec3ae3054792..b7b92cdf3add 100644
@@ -221,28 +221,18 @@ sanitize_restored_user_xstate(union fpregs_state *state,
 
 	if (use_xsave()) {
 		/*
-		 * Note: we don't need to zero the reserved bits in the
-		 * xstate_header here because we either didn't copy them at all,
-		 * or we checked earlier that they aren't set.
+		 * Clear all feature bits which are not set in
+		 * user_xfeatures and clear all extended features
+		 * for fx_only mode.
 		 */
+		u64 mask = fx_only ? XFEATURE_MASK_FPSSE : user_xfeatures;
 
 		/*
-		 * 'user_xfeatures' might have bits clear which are
-		 * set in header->xfeatures. This represents features that
-		 * were in init state prior to a signal delivery, and need
-		 * to be reset back to the init state.  Clear any user
-		 * feature bits which are set in the kernel buffer to get
-		 * them back to the init state.
-		 *
-		 * Supervisor state is unchanged by input from userspace.
-		 * Ensure supervisor state bits stay set and supervisor
-		 * state is not modified.
+		 * Supervisor state has to be preserved. The sigframe
+		 * restore can only modify user features, i.e. @mask
+		 * cannot contain them.
 		 */
-		if (fx_only)
-			header->xfeatures = XFEATURE_MASK_FPSSE;
-		else
-			header->xfeatures &= user_xfeatures |
-					     xfeatures_mask_supervisor();
+		header->xfeatures &= mask | xfeatures_mask_supervisor();
 	}
 
 	if (use_fxsr()) {

60 lines not on this page · raw message

index dbc6214d69de..8f3b438f6fd3 100644
@@ -143,9 +143,25 @@ static void sev_asid_free(int asid)
 	mutex_unlock(&sev_bitmap_lock);
 }
 
-static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
+static void sev_decommission(unsigned int handle)
 {
 	struct sev_data_decommission *decommission;
+
+	if (!handle)
+		return;
+
+	decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
+	if (!decommission)
+		return;
+
+	decommission->handle = handle;
+	sev_guest_decommission(decommission, NULL);
+
+	kfree(decommission);
+}
+
+static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
+{
 	struct sev_data_deactivate *data;
 
 	if (!handle)

@@ -165,15 +181,7 @@ static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
 
 	kfree(data);
 
-	decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
-	if (!decommission)
-		return;
-
-	/* decommission handle */
-	decommission->handle = handle;
-	sev_guest_decommission(decommission, NULL);
-
-	kfree(decommission);
+	sev_decommission(handle);
 }
 
 static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp)

@@ -303,8 +311,10 @@ static int sev_launch_start(struct kvm *kvm, struct kvm_sev_cmd *argp)
 
 	/* Bind ASID to this guest */
 	ret = sev_bind_asid(kvm, start->handle, error);
-	if (ret)
+	if (ret) {
+		sev_decommission(start->handle);
 		goto e_free_session;
+	}
 
 	/* return handle to userspace */
 	params.handle = start->handle;

48 lines not on this page · raw message

index 8183ddb3700c..64db5852432e 100644
@@ -592,8 +592,10 @@ DEFINE_IDTENTRY_RAW(xenpv_exc_debug)
 DEFINE_IDTENTRY_RAW(exc_xen_unknown_trap)
 {
 	/* This should never happen and there is no way to handle it. */
+	instrumentation_begin();
 	pr_err("Unknown trap in Xen PV mode.");
 	BUG();
+	instrumentation_end();
 }
 
 #ifdef CONFIG_X86_MCE

82 lines not on this page · raw message

index 1efd6fa0dc60..51b320cf8574 100644
@@ -1,3 +1,5 @@
 #include <linux/kernel.h>
+#include <linux/errno.h>
+#include <crypto/pkcs7.h>
 
 extern const char __initconst *const blacklist_hashes[];

57 lines not on this page · raw message

new file mode 100644
index 000000000000..abdb5795936b
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _CERT_COMMON_H
+#define _CERT_COMMON_H
+
+int load_certificate_list(const u8 cert_list[], const unsigned long list_size,
+			  const struct key *keyring);
+
+#endif

75 lines not on this page · raw message

index 88310ac9ce90..62c536f9d925 100644
@@ -1032,7 +1032,15 @@ int device_add_software_node(struct device *dev, const struct software_node *nod
 	}
 
 	set_secondary_fwnode(dev, &swnode->fwnode);
-	software_node_notify(dev, KOBJ_ADD);
+
+	/*
+	 * If the device has been fully registered by the time this function is
+	 * called, software_node_notify() must be called separately so that the
+	 * symlinks get created and the reference count of the node is kept in
+	 * balance.
+	 */
+	if (device_is_registered(dev))
+		software_node_notify(dev, KOBJ_ADD);
 
 	return 0;
 }

@@ -1052,7 +1060,8 @@ void device_remove_software_node(struct device *dev)
 	if (!swnode)
 		return;
 
-	software_node_notify(dev, KOBJ_REMOVE);
+	if (device_is_registered(dev))
+		software_node_notify(dev, KOBJ_REMOVE);
 	set_secondary_fwnode(dev, NULL);
 	kobject_put(&swnode->kobj);
 }

@@ -1106,8 +1115,7 @@ int software_node_notify(struct device *dev, unsigned long action)
 
 	switch (action) {
 	case KOBJ_ADD:
-		ret = sysfs_create_link_nowarn(&dev->kobj, &swnode->kobj,
-					       "software_node");
+		ret = sysfs_create_link(&dev->kobj, &swnode->kobj, "software_node");
 		if (ret)
 			break;
 

index 1d8a3876b745..5ba8e8bc609f 100644
@@ -110,6 +110,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
 		pasid = iommu_sva_get_pasid(sva);
 		if (pasid == IOMMU_PASID_INVALID) {
 			iommu_sva_unbind_device(sva);
+			rc = -EINVAL;
 			goto failed;
 		}
 

index 27c07350971d..375e7e647df6 100644
@@ -131,10 +131,7 @@ static unsigned int mtk_uart_apdma_read(struct mtk_chan *c, unsigned int reg)
 
 static void mtk_uart_apdma_desc_free(struct virt_dma_desc *vd)
 {
-	struct dma_chan *chan = vd->tx.chan;
-	struct mtk_chan *c = to_mtk_uart_apdma_chan(chan);
-
-	kfree(c->desc);
+	kfree(container_of(vd, struct mtk_uart_apdma_desc, vd));
 }
 
 static void mtk_uart_apdma_start_tx(struct mtk_chan *c)

@@ -207,14 +204,9 @@ static void mtk_uart_apdma_start_rx(struct mtk_chan *c)
 
 static void mtk_uart_apdma_tx_handler(struct mtk_chan *c)
 {
-	struct mtk_uart_apdma_desc *d = c->desc;
-
 	mtk_uart_apdma_write(c, VFF_INT_FLAG, VFF_TX_INT_CLR_B);
 	mtk_uart_apdma_write(c, VFF_INT_EN, VFF_INT_EN_CLR_B);
 	mtk_uart_apdma_write(c, VFF_EN, VFF_EN_CLR_B);
-
-	list_del(&d->vd.node);
-	vchan_cookie_complete(&d->vd);
 }
 
 static void mtk_uart_apdma_rx_handler(struct mtk_chan *c)

@@ -245,9 +237,17 @@ static void mtk_uart_apdma_rx_handler(struct mtk_chan *c)
 
 	c->rx_status = d->avail_len - cnt;
 	mtk_uart_apdma_write(c, VFF_RPT, wg);
+}
 
-	list_del(&d->vd.node);
-	vchan_cookie_complete(&d->vd);
+static void mtk_uart_apdma_chan_complete_handler(struct mtk_chan *c)
+{
+	struct mtk_uart_apdma_desc *d = c->desc;
+
+	if (d) {
+		list_del(&d->vd.node);
+		vchan_cookie_complete(&d->vd);
+		c->desc = NULL;
+	}
 }
 
 static irqreturn_t mtk_uart_apdma_irq_handler(int irq, void *dev_id)

@@ -261,6 +261,7 @@ static irqreturn_t mtk_uart_apdma_irq_handler(int irq, void *dev_id)
 		mtk_uart_apdma_rx_handler(c);
 	else if (c->dir == DMA_MEM_TO_DEV)
 		mtk_uart_apdma_tx_handler(c);
+	mtk_uart_apdma_chan_complete_handler(c);
 	spin_unlock_irqrestore(&c->vc.lock, flags);
 
 	return IRQ_HANDLED;

@@ -348,7 +349,7 @@ static struct dma_async_tx_descriptor *mtk_uart_apdma_prep_slave_sg
 		return NULL;
 
 	/* Now allocate and setup the descriptor */
-	d = kzalloc(sizeof(*d), GFP_ATOMIC);
+	d = kzalloc(sizeof(*d), GFP_NOWAIT);
 	if (!d)
 		return NULL;
 

@@ -366,7 +367,7 @@ static void mtk_uart_apdma_issue_pending(struct dma_chan *chan)
 	unsigned long flags;
 
 	spin_lock_irqsave(&c->vc.lock, flags);
-	if (vchan_issue_pending(&c->vc)) {
+	if (vchan_issue_pending(&c->vc) && !c->desc) {
 		vd = vchan_next_desc(&c->vc);
 		c->desc = to_mtk_uart_apdma_desc(&vd->tx);
 

index d530c1bf11d9..6885b3dcd7a9 100644
@@ -1913,7 +1913,7 @@ static int rcar_dmac_probe(struct platform_device *pdev)
 
 	/* Enable runtime PM and initialize the device. */
 	pm_runtime_enable(&pdev->dev);
-	ret = pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_resume_and_get(&pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "runtime PM get sync failed (%d)\n", ret);
 		return ret;

index 36ba8b43e78d..18cbd1e43c2e 100644
@@ -1452,7 +1452,7 @@ static int stm32_mdma_alloc_chan_resources(struct dma_chan *c)
 		return -ENOMEM;
 	}
 
-	ret = pm_runtime_get_sync(dmadev->ddev.dev);
+	ret = pm_runtime_resume_and_get(dmadev->ddev.dev);
 	if (ret < 0)
 		return ret;
 

@@ -1718,7 +1718,7 @@ static int stm32_mdma_pm_suspend(struct device *dev)
 	u32 ccr, id;
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0)
 		return ret;
 

index ff7dfb3fdeb4..6c709803203a 100644
@@ -113,6 +113,7 @@
 #define XILINX_DPDMA_CH_VDO				0x020
 #define XILINX_DPDMA_CH_PYLD_SZ				0x024
 #define XILINX_DPDMA_CH_DESC_ID				0x028
+#define XILINX_DPDMA_CH_DESC_ID_MASK			GENMASK(15, 0)
 
 /* DPDMA descriptor fields */
 #define XILINX_DPDMA_DESC_CONTROL_PREEMBLE		0xa5

@@ -866,7 +867,8 @@ static void xilinx_dpdma_chan_queue_transfer(struct xilinx_dpdma_chan *chan)
 	 * will be used, but it should be enough.
 	 */
 	list_for_each_entry(sw_desc, &desc->descriptors, node)
-		sw_desc->hw.desc_id = desc->vdesc.tx.cookie;
+		sw_desc->hw.desc_id = desc->vdesc.tx.cookie
+				    & XILINX_DPDMA_CH_DESC_ID_MASK;
 
 	sw_desc = list_first_entry(&desc->descriptors,
 				   struct xilinx_dpdma_sw_desc, node);

@@ -1086,7 +1088,8 @@ static void xilinx_dpdma_chan_vsync_irq(struct  xilinx_dpdma_chan *chan)
 	if (!chan->running || !pending)
 		goto out;
 
-	desc_id = dpdma_read(chan->reg, XILINX_DPDMA_CH_DESC_ID);
+	desc_id = dpdma_read(chan->reg, XILINX_DPDMA_CH_DESC_ID)
+		& XILINX_DPDMA_CH_DESC_ID_MASK;
 
 	/* If the retrigger raced with vsync, retry at the next frame. */
 	sw_desc = list_first_entry(&pending->descriptors,

index d8419565b92c..5fecf5aa6e85 100644
@@ -468,7 +468,7 @@ static int zynqmp_dma_alloc_chan_resources(struct dma_chan *dchan)
 	struct zynqmp_dma_desc_sw *desc;
 	int i, ret;
 
-	ret = pm_runtime_get_sync(chan->dev);
+	ret = pm_runtime_resume_and_get(chan->dev);
 	if (ret < 0)
 		return ret;
 

index 1631727bf0da..c7b5446d01fd 100644
@@ -1880,6 +1880,7 @@ static void gpio_v2_line_info_changed_to_v1(
 		struct gpio_v2_line_info_changed *lic_v2,
 		struct gpioline_info_changed *lic_v1)
 {
+	memset(lic_v1, 0, sizeof(*lic_v1));
 	gpio_v2_line_info_to_v1(&lic_v2->info, &lic_v1->info);
 	lic_v1->timestamp = lic_v2->timestamp_ns;
 	lic_v1->event_type = lic_v2->event_type;

index 47e0b48dc26f..1c4623d25a62 100644
@@ -214,9 +214,21 @@ static int amdgpu_dma_buf_pin(struct dma_buf_attachment *attach)
 {
 	struct drm_gem_object *obj = attach->dmabuf->priv;
 	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+	int r;
 
 	/* pin buffer into GTT */
-	return amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
+	r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
+	if (r)
+		return r;
+
+	if (bo->tbo.moving) {
+		r = dma_fence_wait(bo->tbo.moving, true);
+		if (r) {
+			amdgpu_bo_unpin(bo);
+			return r;
+		}
+	}
+	return 0;
 }
 
 /**

index 72d23651501d..2342c5d216f9 100644
@@ -6769,12 +6769,8 @@ static int gfx_v10_0_kiq_init_register(struct amdgpu_ring *ring)
 	if (ring->use_doorbell) {
 		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
 			(adev->doorbell_index.kiq * 2) << 2);
-		/* If GC has entered CGPG, ringing doorbell > first page doesn't
-		 * wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround
-		 * this issue.
-		 */
 		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
-			(adev->doorbell.size - 4));
+			(adev->doorbell_index.userqueue_end * 2) << 2);
 	}
 
 	WREG32_SOC15(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,

index 1fdfb7783404..d2c020a91c0b 100644
@@ -3623,12 +3623,8 @@ static int gfx_v9_0_kiq_init_register(struct amdgpu_ring *ring)
 	if (ring->use_doorbell) {
 		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
 					(adev->doorbell_index.kiq * 2) << 2);
-		/* If GC has entered CGPG, ringing doorbell > first page doesn't
-		 * wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround
-		 * this issue.
-		 */
 		WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
-					(adev->doorbell.size - 4));
+					(adev->doorbell_index.userqueue_end * 2) << 2);
 	}
 
 	WREG32_SOC15_RLC(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,

index f64e06e1067d..96ea1a2c11dd 100644
@@ -137,6 +137,7 @@ static int kmb_hw_init(struct drm_device *drm, unsigned long flags)
 	/* Allocate LCD interrupt resources */
 	irq_lcd = platform_get_irq(pdev, 0);
 	if (irq_lcd < 0) {
+		ret = irq_lcd;
 		drm_err(&kmb->drm, "irq_lcd not found");
 		goto setup_fail;
 	}

index 347488685f74..60019d0532fc 100644
@@ -93,7 +93,22 @@ int nouveau_gem_prime_pin(struct drm_gem_object *obj)
 	if (ret)
 		return -EINVAL;
 
-	return 0;
+	ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
+	if (ret)
+		goto error;
+
+	if (nvbo->bo.moving)
+		ret = dma_fence_wait(nvbo->bo.moving, true);
+
+	ttm_bo_unreserve(&nvbo->bo);
+	if (ret)
+		goto error;
+
+	return ret;
+
+error:
+	nouveau_bo_unpin(nvbo);
+	return ret;
 }
 
 void nouveau_gem_prime_unpin(struct drm_gem_object *obj)

index 42a87948e28c..4a90807351e7 100644
@@ -77,9 +77,19 @@ int radeon_gem_prime_pin(struct drm_gem_object *obj)
 
 	/* pin buffer into GTT */
 	ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
-	if (likely(ret == 0))
-		bo->prime_shared_count++;
-
+	if (unlikely(ret))
+		goto error;
+
+	if (bo->tbo.moving) {
+		ret = dma_fence_wait(bo->tbo.moving, false);
+		if (unlikely(ret)) {
+			radeon_bo_unpin(bo);
+			goto error;
+		}
+	}
+
+	bo->prime_shared_count++;
+error:
 	radeon_bo_unreserve(bo);
 	return ret;
 }

101 lines not on this page · raw message

index f9e1c2ceaac0..04a1e38f2a6f 100644
@@ -978,6 +978,9 @@ static s32 i801_access(struct i2c_adapter *adap, u16 addr,
 	}
 
 out:
+	/* Unlock the SMBus device for use by BIOS/ACPI */
+	outb_p(SMBHSTSTS_INUSE_STS, SMBHSTSTS(priv));
+
 	pm_runtime_mark_last_busy(&priv->pci_dev->dev);
 	pm_runtime_put_autosuspend(&priv->pci_dev->dev);
 	mutex_unlock(&priv->acpi_lock);

index a39f7d092797..66dfa211e736 100644
@@ -83,7 +83,7 @@ static int osif_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
 			}
 		}
 
-		ret = osif_usb_read(adapter, OSIFI2C_STOP, 0, 0, NULL, 0);
+		ret = osif_usb_write(adapter, OSIFI2C_STOP, 0, 0, NULL, 0);
 		if (ret) {
 			dev_err(&adapter->dev, "failure sending STOP\n");
 			return -EREMOTEIO;

@@ -153,7 +153,7 @@ static int osif_probe(struct usb_interface *interface,
 	 * Set bus frequency. The frequency is:
 	 * 120,000,000 / ( 16 + 2 * div * 4^prescale).
 	 * Using dev = 52, prescale = 0 give 100KHz */
-	ret = osif_usb_read(&priv->adapter, OSIFI2C_SET_BIT_RATE, 52, 0,
+	ret = osif_usb_write(&priv->adapter, OSIFI2C_SET_BIT_RATE, 52, 0,
 			    NULL, 0);
 	if (ret) {
 		dev_err(&interface->dev, "failure sending bit rate");

80 lines not on this page · raw message

index 9f30748da4ab..8c38f224becb 100644
@@ -350,6 +350,7 @@ static int ldisc_open(struct tty_struct *tty)
 	rtnl_lock();
 	result = register_netdevice(dev);
 	if (result) {
+		tty_kref_put(tty);
 		rtnl_unlock();
 		free_netdev(dev);
 		return -ENODEV;

index 17d5b649eb36..e81dd34a3cac 100644
@@ -1266,9 +1266,11 @@ int qed_dcbx_get_config_params(struct qed_hwfn *p_hwfn,
 		p_hwfn->p_dcbx_info->set.ver_num |= DCBX_CONFIG_VERSION_STATIC;
 
 	p_hwfn->p_dcbx_info->set.enabled = dcbx_info->operational.enabled;
+	BUILD_BUG_ON(sizeof(dcbx_info->operational.params) !=
+		     sizeof(p_hwfn->p_dcbx_info->set.config.params));
 	memcpy(&p_hwfn->p_dcbx_info->set.config.params,
 	       &dcbx_info->operational.params,
-	       sizeof(struct qed_dcbx_admin_params));
+	       sizeof(p_hwfn->p_dcbx_info->set.config.params));
 	p_hwfn->p_dcbx_info->set.config.valid = true;
 
 	memcpy(params, &p_hwfn->p_dcbx_info->set, sizeof(struct qed_dcbx_set));

index 1df2c002c9f6..f7a56e05ec8a 100644
@@ -1673,7 +1673,7 @@ static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 {
 	switch(stringset) {
 	case ETH_SS_STATS:
-		memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
+		memcpy(data, rtl8169_gstrings, sizeof(rtl8169_gstrings));
 		break;
 	}
 }

index f029c7c03804..393cf99856ed 100644
@@ -2287,7 +2287,7 @@ static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
 {
 	switch (stringset) {
 	case ETH_SS_STATS:
-		memcpy(data, *sh_eth_gstrings_stats,
+		memcpy(data, sh_eth_gstrings_stats,
 		       sizeof(sh_eth_gstrings_stats));
 		break;
 	}

index 01bb36e7cff0..6bd3a389d389 100644
@@ -774,12 +774,15 @@ static void temac_start_xmit_done(struct net_device *ndev)
 	stat = be32_to_cpu(cur_p->app0);
 
 	while (stat & STS_CTRL_APP0_CMPLT) {
+		/* Make sure that the other fields are read after bd is
+		 * released by dma
+		 */
+		rmb();
 		dma_unmap_single(ndev->dev.parent, be32_to_cpu(cur_p->phys),
 				 be32_to_cpu(cur_p->len), DMA_TO_DEVICE);
 		skb = (struct sk_buff *)ptr_from_txbd(cur_p);
 		if (skb)
 			dev_consume_skb_irq(skb);
-		cur_p->app0 = 0;
 		cur_p->app1 = 0;
 		cur_p->app2 = 0;
 		cur_p->app3 = 0;

@@ -788,6 +791,12 @@ static void temac_start_xmit_done(struct net_device *ndev)
 		ndev->stats.tx_packets++;
 		ndev->stats.tx_bytes += be32_to_cpu(cur_p->len);
 
+		/* app0 must be visible last, as it is used to flag
+		 * availability of the bd
+		 */
+		smp_mb();
+		cur_p->app0 = 0;
+
 		lp->tx_bd_ci++;
 		if (lp->tx_bd_ci >= lp->tx_bd_num)
 			lp->tx_bd_ci = 0;

@@ -814,6 +823,9 @@ static inline int temac_check_tx_bd_space(struct temac_local *lp, int num_frag)
 		if (cur_p->app0)
 			return NETDEV_TX_BUSY;
 
+		/* Make sure to read next bd app0 after this one */
+		rmb();
+
 		tail++;
 		if (tail >= lp->tx_bd_num)
 			tail = 0;

@@ -930,6 +942,11 @@ temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	wmb();
 	lp->dma_out(lp, TX_TAILDESC_PTR, tail_p); /* DMA start */
 
+	if (temac_check_tx_bd_space(lp, MAX_SKB_FRAGS + 1)) {
+		netdev_info(ndev, "%s -> netif_stop_queue\n", __func__);
+		netif_stop_queue(ndev);
+	}
+
 	return NETDEV_TX_OK;
 }
 

index 9bd9a5c0b1db..6bbc81ad295f 100644
@@ -826,16 +826,12 @@ static int dp83867_phy_reset(struct phy_device *phydev)
 {
 	int err;
 
-	err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESET);
+	err = phy_write(phydev, DP83867_CTRL, DP83867_SW_RESTART);
 	if (err < 0)
 		return err;
 
 	usleep_range(10, 20);
 
-	/* After reset FORCE_LINK_GOOD bit is set. Although the
-	 * default value should be unset. Disable FORCE_LINK_GOOD
-	 * for the phy to work properly.
-	 */
 	return phy_modify(phydev, MII_DP83867_PHYCTRL,
 			 DP83867_PHYCR_FORCE_LINK_GOOD, 0);
 }

index 6700f1970b24..bc55ec739af9 100644
@@ -575,7 +575,7 @@ static int qmi_wwan_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 
 	if (info->flags & QMI_WWAN_FLAG_PASS_THROUGH) {
 		skb->protocol = htons(ETH_P_MAP);
-		return (netif_rx(skb) == NET_RX_SUCCESS);
+		return 1;
 	}
 
 	switch (skb->data[0] & 0xf0) {

index 20fb5638ac65..23fae943a119 100644
@@ -6078,7 +6078,7 @@ static void rtl8152_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 {
 	switch (stringset) {
 	case ETH_SS_STATS:
-		memcpy(data, *rtl8152_gstrings, sizeof(rtl8152_gstrings));
+		memcpy(data, rtl8152_gstrings, sizeof(rtl8152_gstrings));
 		break;
 	}
 }

index fa7d4c20dc13..30b39cb4056a 100644
@@ -1693,8 +1693,13 @@ static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
+
 	data->started = false;
 	hrtimer_cancel(&data->beacon_timer);
+
+	while (!skb_queue_empty(&data->pending))
+		ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
+
 	wiphy_dbg(hw->wiphy, "%s\n", __func__);
 }
 

index e4d4e399004b..16a17215f633 100644
@@ -1870,11 +1870,21 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags)
 	int err;
 	int i, bars = 0;
 
-	if (atomic_inc_return(&dev->enable_cnt) > 1) {
-		pci_update_current_state(dev, dev->current_state);
-		return 0;		/* already enabled */
+	/*
+	 * Power state could be unknown at this point, either due to a fresh
+	 * boot or a device removal call.  So get the current power state
+	 * so that things like MSI message writing will behave as expected
+	 * (e.g. if the device really is in D0 at enable time).
+	 */
+	if (dev->pm_cap) {
+		u16 pmcsr;
+		pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
+		dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK);
 	}
 
+	if (atomic_inc_return(&dev->enable_cnt) > 1)
+		return 0;		/* already enabled */
+
 	bridge = pci_upstream_bridge(dev);
 	if (bridge)
 		pci_enable_bridge(bridge);

index c12fa57ebd12..165cb7a59715 100644
@@ -845,8 +845,10 @@ static int microchip_sgpio_probe(struct platform_device *pdev)
 	i = 0;
 	device_for_each_child_node(dev, fwnode) {
 		ret = microchip_sgpio_register_bank(dev, priv, fwnode, i++);
-		if (ret)
+		if (ret) {
+			fwnode_handle_put(fwnode);
 			return ret;
+		}
 	}
 
 	if (priv->in.gpio.ngpio != priv->out.gpio.ngpio) {

index 7d9bdedcd71b..3af4430543dc 100644
@@ -1229,7 +1229,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
 	struct device *dev = pctl->dev;
 	struct resource res;
 	int npins = STM32_GPIO_PINS_PER_BANK;
-	int bank_nr, err;
+	int bank_nr, err, i = 0;
 
 	if (!IS_ERR(bank->rstc))
 		reset_control_deassert(bank->rstc);

@@ -1251,9 +1251,14 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl,
 
 	of_property_read_string(np, "st,bank-name", &bank->gpio_chip.label);
 
-	if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args)) {
+	if (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, i, &args)) {
 		bank_nr = args.args[1] / STM32_GPIO_PINS_PER_BANK;
 		bank->gpio_chip.base = args.args[1];
+
+		npins = args.args[2];
+		while (!of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3,
+							 ++i, &args))
+			npins += args.args[2];
 	} else {
 		bank_nr = pctl->nbanks;
 		bank->gpio_chip.base = bank_nr * STM32_GPIO_PINS_PER_BANK;

index ed0b1bb99f08..a0356f3707b8 100644
@@ -1387,6 +1387,22 @@ static void sd_uninit_command(struct scsi_cmnd *SCpnt)
 	}
 }
 
+static bool sd_need_revalidate(struct block_device *bdev,
+		struct scsi_disk *sdkp)
+{
+	if (sdkp->device->removable || sdkp->write_prot) {
+		if (bdev_check_media_change(bdev))
+			return true;
+	}
+
+	/*
+	 * Force a full rescan after ioctl(BLKRRPART).  While the disk state has
+	 * nothing to do with partitions, BLKRRPART is used to force a full
+	 * revalidate after things like a format for historical reasons.
+	 */
+	return test_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
+}
+
 /**
  *	sd_open - open a scsi disk device
  *	@bdev: Block device of the scsi disk to open

@@ -1423,10 +1439,8 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
 	if (!scsi_block_when_processing_errors(sdev))
 		goto error_out;
 
-	if (sdev->removable || sdkp->write_prot) {
-		if (bdev_check_media_change(bdev))
-			sd_revalidate_disk(bdev->bd_disk);
-	}
+	if (sd_need_revalidate(bdev, sdkp))
+		sd_revalidate_disk(bdev->bd_disk);
 
 	/*
 	 * If the drive is empty, just let the open fail.

index ab9035662717..bcc0b5a3a459 100644
@@ -1033,12 +1033,6 @@ static int nxp_fspi_probe(struct platform_device *pdev)
 		goto err_put_ctrl;
 	}
 
-	/* Clear potential interrupts */
-	reg = fspi_readl(f, f->iobase + FSPI_INTR);
-	if (reg)
-		fspi_writel(f, reg, f->iobase + FSPI_INTR);
-
-
 	/* find the resources - controller memory mapped space */
 	if (is_acpi_node(f->dev->fwnode))
 		res = platform_get_resource(pdev, IORESOURCE_MEM, 1);

@@ -1076,6 +1070,11 @@ static int nxp_fspi_probe(struct platform_device *pdev)
 		}
 	}
 
+	/* Clear potential interrupts */
+	reg = fspi_readl(f, f->iobase + FSPI_INTR);
+	if (reg)
+		fspi_writel(f, reg, f->iobase + FSPI_INTR);
+
 	/* find the irq */
 	ret = platform_get_irq(pdev, 0);
 	if (ret < 0)

index 7bbfd58958bc..d7e361fb0548 100644
@@ -642,6 +642,9 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
 	}
 
 	info->eoi_time = 0;
+
+	/* is_active hasn't been reset yet, do it now. */
+	smp_store_release(&info->is_active, 0);
 	do_unmask(info, EVT_MASK_REASON_EOI_PENDING);
 }
 

@@ -811,6 +814,7 @@ static void xen_evtchn_close(evtchn_port_t port)
 		BUG();
 }
 
+/* Not called for lateeoi events. */
 static void event_handler_exit(struct irq_info *info)
 {
 	smp_store_release(&info->is_active, 0);

@@ -1883,7 +1887,12 @@ static void lateeoi_ack_dynirq(struct irq_data *data)
 
 	if (VALID_EVTCHN(evtchn)) {
 		do_mask(info, EVT_MASK_REASON_EOI_PENDING);
-		event_handler_exit(info);
+		/*
+		 * Don't call event_handler_exit().
+		 * Need to keep is_active non-zero in order to ignore re-raised
+		 * events after cpu affinity changes while a lateeoi is pending.
+		 */
+		clear_evtchn(evtchn);
 	}
 }
 

73 lines not on this page · raw message

index 209535d5b8d3..3d2e3dd4ee01 100644
@@ -578,6 +578,7 @@ static int ceph_finish_async_create(struct inode *dir, struct dentry *dentry,
 	struct ceph_inode_info *ci = ceph_inode(dir);
 	struct inode *inode;
 	struct timespec64 now;
+	struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(dir->i_sb);
 	struct ceph_vino vino = { .ino = req->r_deleg_ino,
 				  .snap = CEPH_NOSNAP };
 

@@ -615,8 +616,10 @@ static int ceph_finish_async_create(struct inode *dir, struct dentry *dentry,
 
 	ceph_file_layout_to_legacy(lo, &in.layout);
 
+	down_read(&mdsc->snap_rwsem);
 	ret = ceph_fill_inode(inode, NULL, &iinfo, NULL, req->r_session,
 			      req->r_fmode, NULL);
+	up_read(&mdsc->snap_rwsem);
 	if (ret) {
 		dout("%s failed to fill inode: %d\n", __func__, ret);
 		ceph_dir_clear_complete(dir);

index 179d2ef69a24..7ee6023adb36 100644
@@ -762,6 +762,8 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page,
 	bool new_version = false;
 	bool fill_inline = false;
 
+	lockdep_assert_held(&mdsc->snap_rwsem);
+
 	dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__,
 	     inode, ceph_vinop(inode), le64_to_cpu(info->version),
 	     ci->i_version);

index 303d71430bdd..9c6c0e2e5880 100644
@@ -1053,6 +1053,7 @@ void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
 	nilfs_sysfs_delete_superblock_group(nilfs);
 	nilfs_sysfs_delete_segctor_group(nilfs);
 	kobject_del(&nilfs->ns_dev_kobj);
+	kobject_put(&nilfs->ns_dev_kobj);
 	kfree(nilfs->ns_dev_subgroups);
 }
 

index fb8b07daa9d1..875e002a4180 100644
@@ -31,6 +31,7 @@ extern int restrict_link_by_builtin_and_secondary_trusted(
 #define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
 #endif
 
+extern struct pkcs7_message *pkcs7;
 #ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
 extern int mark_hash_blacklisted(const char *hash);
 extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,

@@ -49,6 +50,20 @@ static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
 }
 #endif
 
+#ifdef CONFIG_SYSTEM_REVOCATION_LIST
+extern int add_key_to_revocation_list(const char *data, size_t size);
+extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);
+#else
+static inline int add_key_to_revocation_list(const char *data, size_t size)
+{
+	return 0;
+}
+static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
+{
+	return -ENOKEY;
+}
+#endif
+
 #ifdef CONFIG_IMA_BLACKLIST_KEYRING
 extern struct key *ima_blacklist_keyring;
 

index 2915f56ad421..edb5c186b0b7 100644
@@ -27,8 +27,10 @@ extern int debug_locks_off(void);
 	int __ret = 0;							\
 									\
 	if (!oops_in_progress && unlikely(c)) {				\
+		instrumentation_begin();				\
 		if (debug_locks_off() && !debug_locks_silent)		\
 			WARN(1, "DEBUG_LOCKS_WARN_ON(%s)", #c);		\
+		instrumentation_end();					\
 		__ret = 1;						\
 	}								\
 	__ret;								\

index ba973efcd369..6686a0baa91d 100644
@@ -289,6 +289,7 @@ struct page *follow_devmap_pud(struct vm_area_struct *vma, unsigned long addr,
 vm_fault_t do_huge_pmd_numa_page(struct vm_fault *vmf, pmd_t orig_pmd);
 
 extern struct page *huge_zero_page;
+extern unsigned long huge_zero_pfn;
 
 static inline bool is_huge_zero_page(struct page *page)
 {

@@ -297,7 +298,7 @@ static inline bool is_huge_zero_page(struct page *page)
 
 static inline bool is_huge_zero_pmd(pmd_t pmd)
 {
-	return is_huge_zero_page(pmd_page(pmd));
+	return READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd) && pmd_present(pmd);
 }
 
 static inline bool is_huge_zero_pud(pud_t pud)

@@ -443,6 +444,11 @@ static inline bool is_huge_zero_page(struct page *page)
 	return false;
 }
 
+static inline bool is_huge_zero_pmd(pmd_t pmd)
+{
+	return false;
+}
+
 static inline bool is_huge_zero_pud(pud_t pud)
 {
 	return false;

index 5dae4187210d..28fa3f9bbbfd 100644
@@ -728,17 +728,6 @@ static inline int hstate_index(struct hstate *h)
 	return h - hstates;
 }
 
-pgoff_t __basepage_index(struct page *page);
-
-/* Return page->index in PAGE_SIZE units */
-static inline pgoff_t basepage_index(struct page *page)
-{
-	if (!PageCompound(page))
-		return page->index;
-
-	return __basepage_index(page);
-}
-
 extern int dissolve_free_huge_page(struct page *page);
 extern int dissolve_free_huge_pages(unsigned long start_pfn,
 				    unsigned long end_pfn);

@@ -969,11 +958,6 @@ static inline int hstate_index(struct hstate *h)
 	return 0;
 }
 
-static inline pgoff_t basepage_index(struct page *page)
-{
-	return page->index;
-}
-
 static inline int dissolve_free_huge_page(struct page *page)
 {
 	return 0;

index 6c1b29bb3563..cfb0842a7fb9 100644
@@ -1680,6 +1680,7 @@ struct zap_details {
 	struct address_space *check_mapping;	/* Check page->mapping if set */
 	pgoff_t	first_index;			/* Lowest page->index to unmap */
 	pgoff_t last_index;			/* Highest page->index to unmap */
+	struct page *single_page;		/* Locked page to be unmapped */
 };
 
 struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,

@@ -1727,6 +1728,7 @@ extern vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
 extern int fixup_user_fault(struct mm_struct *mm,
 			    unsigned long address, unsigned int fault_flags,
 			    bool *unlocked);
+void unmap_mapping_page(struct page *page);
 void unmap_mapping_pages(struct address_space *mapping,
 		pgoff_t start, pgoff_t nr, bool even_cows);
 void unmap_mapping_range(struct address_space *mapping,

@@ -1747,6 +1749,7 @@ static inline int fixup_user_fault(struct mm_struct *mm, unsigned long address,
 	BUG();
 	return -EFAULT;
 }
+static inline void unmap_mapping_page(struct page *page) { }
 static inline void unmap_mapping_pages(struct address_space *mapping,
 		pgoff_t start, pgoff_t nr, bool even_cows) { }
 static inline void unmap_mapping_range(struct address_space *mapping,

index 8c9947fd62f3..e0023e5f9aa6 100644
@@ -501,7 +501,7 @@ static inline struct page *read_mapping_page(struct address_space *mapping,
 }
 
 /*
- * Get index of the page with in radix-tree
+ * Get index of the page within radix-tree (but not for hugetlb pages).
  * (TODO: remove once hugetlb pages will have ->index in PAGE_SIZE)
  */
 static inline pgoff_t page_to_index(struct page *page)

@@ -520,15 +520,16 @@ static inline pgoff_t page_to_index(struct page *page)
 	return pgoff;
 }
 
+extern pgoff_t hugetlb_basepage_index(struct page *page);
+
 /*
- * Get the offset in PAGE_SIZE.
- * (TODO: hugepage should have ->index in PAGE_SIZE)
+ * Get the offset in PAGE_SIZE (even for hugetlb pages).
+ * (TODO: hugetlb pages should have ->index in PAGE_SIZE)
  */
 static inline pgoff_t page_to_pgoff(struct page *page)
 {
-	if (unlikely(PageHeadHuge(page)))
-		return page->index << compound_order(page);
-
+	if (unlikely(PageHuge(page)))
+		return hugetlb_basepage_index(page);
 	return page_to_index(page);
 }
 

index def5c62c93b3..8d04e7deedc6 100644
@@ -91,6 +91,7 @@ enum ttu_flags {
 
 	TTU_SPLIT_HUGE_PMD	= 0x4,	/* split huge PMD if any */
 	TTU_IGNORE_MLOCK	= 0x8,	/* ignore mlock */
+	TTU_SYNC		= 0x10,	/* avoid racy checks with PVMW_SYNC */
 	TTU_IGNORE_HWPOISON	= 0x20,	/* corrupted page is recoverable */
 	TTU_BATCH_FLUSH		= 0x40,	/* Batch TLB flushes where possible
 					 * and caller guarantees they will

index 62e3811e95a7..b9bdeca1d784 100644
@@ -1928,7 +1928,8 @@ static inline u32 net_tx_rndhash(void)
 
 static inline void sk_set_txhash(struct sock *sk)
 {
-	sk->sk_txhash = net_tx_rndhash();
+	/* This pairs with READ_ONCE() in skb_set_hash_from_sk() */
+	WRITE_ONCE(sk->sk_txhash, net_tx_rndhash());
 }
 
 static inline bool sk_rethink_txhash(struct sock *sk)

@@ -2200,9 +2201,12 @@ static inline void sock_poll_wait(struct file *filp, struct socket *sock,
 
 static inline void skb_set_hash_from_sk(struct sk_buff *skb, struct sock *sk)
 {
-	if (sk->sk_txhash) {
+	/* This pairs with WRITE_ONCE() in sk_set_txhash() */
+	u32 txhash = READ_ONCE(sk->sk_txhash);
+
+	if (txhash) {
 		skb->l4_hash = 1;
-		skb->hash = sk->sk_txhash;
+		skb->hash = txhash;
 	}
 }
 

@@ -2260,8 +2264,13 @@ struct sk_buff *sock_dequeue_err_skb(struct sock *sk);
 static inline int sock_error(struct sock *sk)
 {
 	int err;
-	if (likely(!sk->sk_err))
+
+	/* Avoid an atomic operation for the common case.
+	 * This is racy since another cpu/thread can change sk_err under us.
+	 */
+	if (likely(data_race(!sk->sk_err)))
 		return 0;
+
 	err = xchg(&sk->sk_err, 0);
 	return -err;
 }

index fe4c01c14ab2..e96f3808e431 100644
@@ -724,11 +724,17 @@ void swiotlb_tbl_sync_single(struct device *hwdev, phys_addr_t tlb_addr,
 	int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT;
 	size_t orig_size = io_tlb_orig_size[index];
 	phys_addr_t orig_addr = io_tlb_orig_addr[index];
+	unsigned int tlb_offset;
 
 	if (orig_addr == INVALID_PHYS_ADDR)
 		return;
 
-	validate_sync_size_and_truncate(hwdev, orig_size, &size);
+	tlb_offset = (tlb_addr & (IO_TLB_SIZE - 1)) -
+		     swiotlb_align_offset(hwdev, orig_addr);
+
+	orig_addr += tlb_offset;
+
+	validate_sync_size_and_truncate(hwdev, orig_size - tlb_offset, &size);
 
 	switch (target) {
 	case SYNC_FOR_CPU:

index a8629b695d38..5aa6d0a6c767 100644
@@ -35,7 +35,6 @@
 #include <linux/jhash.h>
 #include <linux/pagemap.h>
 #include <linux/syscalls.h>
-#include <linux/hugetlb.h>
 #include <linux/freezer.h>
 #include <linux/memblock.h>
 #include <linux/fault-inject.h>

@@ -650,7 +649,7 @@ again:
 
 		key->both.offset |= FUT_OFF_INODE; /* inode-based key */
 		key->shared.i_seq = get_inode_sequence_number(inode);
-		key->shared.pgoff = basepage_index(tail);
+		key->shared.pgoff = page_to_pgoff(tail);
 		rcu_read_unlock();
 	}
 

105 lines not on this page · raw message

index f39c383c7180..5bf6b1659215 100644
@@ -842,7 +842,7 @@ static int count_matching_names(struct lock_class *new_class)
 }
 
 /* used from NMI context -- must be lockless */
-static __always_inline struct lock_class *
+static noinstr struct lock_class *
 look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
 {
 	struct lockdep_subclass_key *key;

@@ -850,12 +850,14 @@ look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass)
 	struct lock_class *class;
 
 	if (unlikely(subclass >= MAX_LOCKDEP_SUBCLASSES)) {
+		instrumentation_begin();
 		debug_locks_off();
 		printk(KERN_ERR
 			"BUG: looking up invalid subclass: %u\n", subclass);
 		printk(KERN_ERR
 			"turning off the locking correctness validator.\n");
 		dump_stack();
+		instrumentation_end();
 		return NULL;
 	}
 

index 30479355ab85..260d6f3f6d68 100644
@@ -266,9 +266,18 @@ static void module_assert_mutex_or_preempt(void)
 #endif
 }
 
+#ifdef CONFIG_MODULE_SIG
 static bool sig_enforce = IS_ENABLED(CONFIG_MODULE_SIG_FORCE);
 module_param(sig_enforce, bool_enable_only, 0644);
 
+void set_module_sig_enforced(void)
+{
+	sig_enforce = true;
+}
+#else
+#define sig_enforce false
+#endif
+
 /*
  * Export sig_enforce kernel cmdline parameter to allow other subsystems rely
  * on that instead of directly to CONFIG_MODULE_SIG_FORCE config.

@@ -279,11 +288,6 @@ bool is_module_sig_enforced(void)
 }
 EXPORT_SYMBOL(is_module_sig_enforced);
 
-void set_module_sig_enforced(void)
-{
-	sig_enforce = true;
-}
-
 /* Block module loading/unloading? */
 int modules_disabled = 0;
 core_param(nomodule, modules_disabled, bint, 0);

index 651218ded981..ef37acd28e4a 100644
@@ -965,7 +965,7 @@ void psi_cgroup_free(struct cgroup *cgroup)
  */
 void cgroup_move_task(struct task_struct *task, struct css_set *to)
 {
-	unsigned int task_flags = 0;
+	unsigned int task_flags;
 	struct rq_flags rf;
 	struct rq *rq;
 

@@ -980,15 +980,31 @@ void cgroup_move_task(struct task_struct *task, struct css_set *to)
 
 	rq = task_rq_lock(task, &rf);
 
-	if (task_on_rq_queued(task)) {
-		task_flags = TSK_RUNNING;
-		if (task_current(rq, task))
-			task_flags |= TSK_ONCPU;
-	} else if (task->in_iowait)
-		task_flags = TSK_IOWAIT;
-
-	if (task->in_memstall)
-		task_flags |= TSK_MEMSTALL;
+	/*
+	 * We may race with schedule() dropping the rq lock between
+	 * deactivating prev and switching to next. Because the psi
+	 * updates from the deactivation are deferred to the switch
+	 * callback to save cgroup tree updates, the task's scheduling
+	 * state here is not coherent with its psi state:
+	 *
+	 * schedule()                   cgroup_move_task()
+	 *   rq_lock()
+	 *   deactivate_task()
+	 *     p->on_rq = 0
+	 *     psi_dequeue() // defers TSK_RUNNING & TSK_IOWAIT updates
+	 *   pick_next_task()
+	 *     rq_unlock()
+	 *                                rq_lock()
+	 *                                psi_task_change() // old cgroup
+	 *                                task->cgroups = to
+	 *                                psi_task_change() // new cgroup
+	 *                                rq_unlock()
+	 *     rq_lock()
+	 *   psi_sched_switch() // does deferred updates in new cgroup
+	 *
+	 * Don't rely on the scheduling state. Use psi_flags instead.
+	 */
+	task_flags = task->psi_flags;
 
 	if (task_flags)
 		psi_task_change(task, task_flags, 0);

index 06d3135bd184..a75ee30b77cb 100644
@@ -36,7 +36,7 @@ EXPORT_SYMBOL_GPL(debug_locks_silent);
 /*
  * Generic 'turn off all lock debugging' function:
  */
-noinstr int debug_locks_off(void)
+int debug_locks_off(void)
 {
 	if (debug_locks && __debug_locks_off()) {
 		if (!debug_locks_silent) {

126 lines not on this page · raw message

index 3da4817190f3..7ba7d9b20494 100644
@@ -1584,15 +1584,12 @@ struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage)
 	return NULL;
 }
 
-pgoff_t __basepage_index(struct page *page)
+pgoff_t hugetlb_basepage_index(struct page *page)
 {
 	struct page *page_head = compound_head(page);
 	pgoff_t index = page_index(page_head);
 	unsigned long compound_idx;
 
-	if (!PageHuge(page_head))
-		return page_index(page);
-
 	if (compound_order(page_head) >= MAX_ORDER)
 		compound_idx = page_to_pfn(page) - page_to_pfn(page_head);
 	else

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index 773622cffe77..40455e753c5b 100644
@@ -322,6 +322,7 @@ void __migration_entry_wait(struct mm_struct *mm, pte_t *ptep,
 		goto out;
 
 	page = migration_entry_to_page(entry);
+	page = compound_head(page);
 
 	/*
 	 * Once page cache replacement of page migration started, page_count

220 lines not on this page · raw message

index c2210e1cdb51..4e640baf9794 100644
@@ -135,9 +135,8 @@ pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
 {
 	pmd_t pmd;
 	VM_BUG_ON(address & ~HPAGE_PMD_MASK);
-	VM_BUG_ON(!pmd_present(*pmdp));
-	/* Below assumes pmd_present() is true */
-	VM_BUG_ON(!pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp));
+	VM_BUG_ON(pmd_present(*pmdp) && !pmd_trans_huge(*pmdp) &&
+			   !pmd_devmap(*pmdp));
 	pmd = pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
 	flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
 	return pmd;

index b0fc27e77d6d..3665d062cc9c 100644
@@ -707,7 +707,6 @@ static bool should_defer_flush(struct mm_struct *mm, enum ttu_flags flags)
  */
 unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
 {
-	unsigned long address;
 	if (PageAnon(page)) {
 		struct anon_vma *page__anon_vma = page_anon_vma(page);
 		/*

@@ -717,15 +716,13 @@ unsigned long page_address_in_vma(struct page *page, struct vm_area_struct *vma)
 		if (!vma->anon_vma || !page__anon_vma ||
 		    vma->anon_vma->root != page__anon_vma->root)
 			return -EFAULT;
-	} else if (page->mapping) {
-		if (!vma->vm_file || vma->vm_file->f_mapping != page->mapping)
-			return -EFAULT;
-	} else
+	} else if (!vma->vm_file) {
 		return -EFAULT;
-	address = __vma_address(page, vma);
-	if (unlikely(address < vma->vm_start || address >= vma->vm_end))
+	} else if (vma->vm_file->f_mapping != compound_head(page)->mapping) {
 		return -EFAULT;
-	return address;
+	}
+
+	return vma_address(page, vma);
 }
 
 pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address)

@@ -919,7 +916,7 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
 	 */
 	mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE,
 				0, vma, vma->vm_mm, address,
-				min(vma->vm_end, address + page_size(page)));
+				vma_address_end(page, vma));
 	mmu_notifier_invalidate_range_start(&range);
 
 	while (page_vma_mapped_walk(&pvmw)) {

@@ -1405,6 +1402,15 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
 	struct mmu_notifier_range range;
 	enum ttu_flags flags = (enum ttu_flags)(long)arg;
 
+	/*
+	 * When racing against e.g. zap_pte_range() on another cpu,
+	 * in between its ptep_get_and_clear_full() and page_remove_rmap(),
+	 * try_to_unmap() may return false when it is about to become true,
+	 * if page table locking is skipped: use TTU_SYNC to wait for that.
+	 */
+	if (flags & TTU_SYNC)
+		pvmw.flags = PVMW_SYNC;
+
 	/* munlock has nothing to gain from examining un-locked vmas */
 	if ((flags & TTU_MUNLOCK) && !(vma->vm_flags & VM_LOCKED))
 		return true;

@@ -1426,9 +1432,10 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
 	 * Note that the page can not be free in this function as call of
 	 * try_to_unmap() must hold a reference on the page.
 	 */
+	range.end = PageKsm(page) ?
+			address + PAGE_SIZE : vma_address_end(page, vma);
 	mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm,
-				address,
-				min(vma->vm_end, address + page_size(page)));
+				address, range.end);
 	if (PageHuge(page)) {
 		/*
 		 * If sharing is possible, start and end will be adjusted

@@ -1777,7 +1784,13 @@ bool try_to_unmap(struct page *page, enum ttu_flags flags)
 	else
 		rmap_walk(page, &rwc);
 
-	return !page_mapcount(page) ? true : false;
+	/*
+	 * When racing against e.g. zap_pte_range() on another cpu,
+	 * in between its ptep_get_and_clear_full() and page_remove_rmap(),
+	 * try_to_unmap() may return false when it is about to become true,
+	 * if page table locking is skipped: use TTU_SYNC to wait for that.
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