The following issues were found

arch/x86/include/uapi/asm/stat.h
2 issues
char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 44 Column: 11 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

               */
struct stat64 {
	unsigned long long	st_dev;
	unsigned char	__pad0[4];

	unsigned long	__st_ino;

	unsigned int	st_mode;
	unsigned int	st_nlink;

Reported by FlawFinder.

char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 55 Column: 11 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

              	unsigned long	st_gid;

	unsigned long long	st_rdev;
	unsigned char	__pad3[4];

	long long	st_size;
	unsigned long	st_blksize;

	/* Number 512-byte blocks allocated. */

Reported by FlawFinder.

arch/x86/kernel/cpu/mce/core.c
2 issues
char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 80 Column: 2 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

              /* One object for each MCE bank, shared by all CPUs */
struct mce_bank_dev {
	struct device_attribute	attr;			/* device attribute */
	char			attrname[ATTR_LEN];	/* attribute name */
	u8			bank;			/* bank number */
};
static struct mce_bank_dev mce_bank_devs[MAX_NR_BANKS];

struct mce_vendor_flags mce_flags __read_mostly;

Reported by FlawFinder.

sprintf - Does not check for buffer overflows
Security

Line: 2346 Column: 9 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              	if (!b->init)
		return -ENODEV;

	return sprintf(buf, "%llx\n", b->ctl);
}

static ssize_t set_bank(struct device *s, struct device_attribute *attr,
			const char *buf, size_t size)
{

Reported by FlawFinder.

arch/x86/kernel/cpu/mce/genpool.c
2 issues
char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 26 Column: 8 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

              
static struct gen_pool *mce_evt_pool;
static LLIST_HEAD(mce_event_llist);
static char gen_pool_buf[MCE_POOLSZ];

/*
 * Compare the record "t" with each of the records on list "l" to see if
 * an equivalent one is present in the list.
 */

Reported by FlawFinder.

memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 113 Column: 2 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              		return -ENOMEM;
	}

	memcpy(&node->mce, mce, sizeof(*mce));
	llist_add(&node->llnode, &mce_event_llist);

	return 0;
}

Reported by FlawFinder.

arch/x86/kernel/cpu/microcode/core.c
2 issues
sprintf - Does not check for buffer overflows
Security

Line: 660 Column: 9 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              {
	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;

	return sprintf(buf, "0x%x\n", uci->cpu_sig.rev);
}

static ssize_t pf_show(struct device *dev,
			struct device_attribute *attr, char *buf)
{

Reported by FlawFinder.

sprintf - Does not check for buffer overflows
Security

Line: 668 Column: 9 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              {
	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;

	return sprintf(buf, "0x%x\n", uci->cpu_sig.pf);
}

static DEVICE_ATTR_WO(reload);
static DEVICE_ATTR(version, 0444, version_show, NULL);
static DEVICE_ATTR(processor_flags, 0444, pf_show, NULL);

Reported by FlawFinder.

arch/x86/kernel/cpu/resctrl/pseudo_lock.c
2 issues
syntax error: ( . event
Error

Line: 1067 

              	switch (boot_cpu_data.x86_model) {
	case INTEL_FAM6_ATOM_GOLDMONT:
	case INTEL_FAM6_ATOM_GOLDMONT_PLUS:
		perf_miss_attr.config = X86_CONFIG(.event = 0xd1,
						   .umask = 0x10);
		perf_hit_attr.config = X86_CONFIG(.event = 0xd1,
						  .umask = 0x2);
		break;
	default:

Reported by Cppcheck.

char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 1230 Column: 2 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

              {
	struct rdtgroup *rdtgrp = file->private_data;
	size_t buf_size;
	char buf[32];
	int ret;
	int sel;

	buf_size = min(count, (sizeof(buf) - 1));
	if (copy_from_user(buf, user_buf, buf_size))

Reported by FlawFinder.

arch/x86/kernel/cpu/umwait.c
2 issues
sprintf - Does not check for buffer overflows
Security

Line: 131 Column: 9 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              {
	u32 ctrl = READ_ONCE(umwait_control_cached);

	return sprintf(buf, "%d\n", umwait_ctrl_c02_enabled(ctrl));
}

static ssize_t enable_c02_store(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)

Reported by FlawFinder.

sprintf - Does not check for buffer overflows
Security

Line: 163 Column: 9 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              {
	u32 ctrl = READ_ONCE(umwait_control_cached);

	return sprintf(buf, "%u\n", umwait_ctrl_max_time(ctrl));
}

static ssize_t max_time_store(struct device *kobj,
			      struct device_attribute *attr,
			      const char *buf, size_t count)

Reported by FlawFinder.

arch/x86/kernel/fpu/core.c
2 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 275 Column: 3 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              	 */
	fpregs_lock();
	if (test_thread_flag(TIF_NEED_FPU_LOAD))
		memcpy(&dst_fpu->state, &src_fpu->state, fpu_kernel_xstate_size);

	else
		save_fpregs_to_fpstate(dst_fpu);
	fpregs_unlock();

Reported by FlawFinder.

memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 362 Column: 2 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              	 * user space as PKRU is eagerly written in switch_to() and
	 * flush_thread().
	 */
	memcpy(&fpu->state, &init_fpstate, init_fpstate_copy_size());
	set_thread_flag(TIF_NEED_FPU_LOAD);
	fpregs_unlock();
}

/*

Reported by FlawFinder.

arch/x86/kernel/kdebugfs.c
2 issues
char - Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues
Security

Line: 80 Column: 2 CWE codes: 119 120
Suggestion: Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length 

              		       struct setup_data_node *node)
{
	struct dentry *d;
	char buf[16];

	sprintf(buf, "%d", no);
	d = debugfs_create_dir(buf, parent);

	debugfs_create_x32("type", S_IRUGO, d, &node->type);

Reported by FlawFinder.

sprintf - Does not check for buffer overflows
Security

Line: 82 Column: 2 CWE codes: 120
Suggestion: Use sprintf_s, snprintf, or vsnprintf 

              	struct dentry *d;
	char buf[16];

	sprintf(buf, "%d", no);
	d = debugfs_create_dir(buf, parent);

	debugfs_create_x32("type", S_IRUGO, d, &node->type);
	debugfs_create_file("data", S_IRUGO, d, node, &fops_setup_data);
}

Reported by FlawFinder.

arch/x86/kernel/ldt.c
2 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 467 Column: 2 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              		goto out_unlock;
	}

	memcpy(new_ldt->entries, old_mm->context.ldt->entries,
	       new_ldt->nr_entries * LDT_ENTRY_SIZE);
	finalize_ldt_struct(new_ldt);

	retval = map_ldt_struct(mm, new_ldt, 0);
	if (retval) {

Reported by FlawFinder.

memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 630 Column: 3 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              		goto out_unlock;

	if (old_ldt)
		memcpy(new_ldt->entries, old_ldt->entries, old_nr_entries * LDT_ENTRY_SIZE);

	new_ldt->entries[ldt_info.entry_number] = ldt;
	finalize_ldt_struct(new_ldt);

	/*

Reported by FlawFinder.

arch/x86/kernel/pci-dma.c
2 issues
Comparing pointers that point to different objects
Error

Line: 46 CWE codes: 570 

              	sort_iommu_table(__iommu_table, __iommu_table_end);
	check_iommu_entries(__iommu_table, __iommu_table_end);

	for (p = __iommu_table; p < __iommu_table_end; p++) {
		if (p && p->detect && p->detect() > 0) {
			p->flags |= IOMMU_DETECTED;
			if (p->early_init)
				p->early_init();
			if (p->flags & IOMMU_FINISH_IF_DETECTED)

Reported by Cppcheck.

Comparing pointers that point to different objects
Error

Line: 128 CWE codes: 570 

              
	x86_init.iommu.iommu_init();

	for (p = __iommu_table; p < __iommu_table_end; p++) {
		if (p && (p->flags & IOMMU_DETECTED) && p->late_init)
			p->late_init();
	}

	return 0;

Reported by Cppcheck.