The following issues were found

arch/nios2/include/asm/string.h
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 19 Column: 14 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              #define __HAVE_ARCH_MEMMOVE

extern void *memset(void *s, int c, size_t count);
extern void *memcpy(void *d, const void *s, size_t count);
extern void *memmove(void *d, const void *s, size_t count);

#endif /* __KERNEL__ */

#endif /* _ASM_NIOS2_STRING_H */

Reported by FlawFinder.

arch/nios2/include/asm/page.h
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 49 Column: 29 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              #define ARCH_PFN_OFFSET		PFN_UP(PHYS_OFFSET)

#define clear_page(page)	memset((page), 0, PAGE_SIZE)
#define copy_page(to, from)	memcpy((to), (from), PAGE_SIZE)

struct page;

extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,

Reported by FlawFinder.

arch/riscv/kernel/machine_kexec.c
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 93 Column: 3 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              			return -EINVAL;
		}

		memcpy(control_code_buffer, riscv_kexec_relocate,
			riscv_kexec_relocate_size);

		/* Mark the control page executable */
		set_memory_x((unsigned long) control_code_buffer, 1);
	}

Reported by FlawFinder.

arch/riscv/kernel/perf_event.c
1 issues
read - Check buffer boundaries if used in a loop including recursive loops
Security

Line: 259 Column: 19 CWE codes: 120 20 

              	hwc->state |= PERF_HES_STOPPED;

	if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
		riscv_pmu->pmu->read(event);
		hwc->state |= PERF_HES_UPTODATE;
	}
}

/*

Reported by FlawFinder.

arch/riscv/kernel/probes/decode-insn.c
1 issues
system - This causes a new program to execute and is difficult to use safely
Security

Line: 24 Column: 22 CWE codes: 78
Suggestion: try using a library call that implements the same functionality if available 

              	/*
	 * Reject instructions list:
	 */
	RISCV_INSN_REJECTED(system,		insn);
	RISCV_INSN_REJECTED(fence,		insn);

	/*
	 * Simulate instructions list:
	 * TODO: the REJECTED ones below need to be implemented

Reported by FlawFinder.

arch/riscv/kernel/probes/simulate-insn.h
1 issues
system - This causes a new program to execute and is difficult to use safely
Security

Line: 22 Column: 20 CWE codes: 78
Suggestion: try using a library call that implements the same functionality if available 

              		}							\
	} while (0)

__RISCV_INSN_FUNCS(system,	0x7f, 0x73);
__RISCV_INSN_FUNCS(fence,	0x7f, 0x0f);

#define RISCV_INSN_SET_SIMULATE(name, code)				\
	do {								\
		if (riscv_insn_is_##name(code)) {			\

Reported by FlawFinder.

arch/riscv/kernel/probes/uprobes.c
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 169 Column: 2 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              	void *kaddr = kmap_atomic(page);
	void *dst = kaddr + (vaddr & ~PAGE_MASK);

	memcpy(dst, src, len);

	/* Add ebreak behind opcode to simulate singlestep */
	if (vaddr) {
		dst += GET_INSN_LENGTH(*(probe_opcode_t *)src);
		*(uprobe_opcode_t *)dst = __BUG_INSN_32;

Reported by FlawFinder.

arch/riscv/kernel/riscv_ksyms.c
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 13 Column: 15 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

               * Assembly functions that may be used (directly or indirectly) by modules
 */
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(__memset);
EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(__memmove);

Reported by FlawFinder.

arch/riscv/kernel/vdso.c
1 issues
Subtracting pointers that point to different objects
Error

Line: 39 CWE codes: 570 

              {
	unsigned int i;

	vdso_pages = (vdso_end - vdso_start) >> PAGE_SHIFT;
	vdso_pagelist =
		kcalloc(vdso_pages + 1, sizeof(struct page *), GFP_KERNEL);
	if (unlikely(vdso_pagelist == NULL)) {
		pr_err("vdso: pagelist allocation failed\n");
		return -ENOMEM;

Reported by Cppcheck.

arch/riscv/mm/init.c
1 issues
memcpy - Does not check for buffer overflows when copying to destination
Security

Line: 458 Column: 2 CWE codes: 120
Suggestion: Make sure destination can always hold the source data 

              	void *to = (void *)CONFIG_PHYS_RAM_BASE;
	size_t sz = (size_t)(end - from + 1);

	memcpy(to, from, sz);
}
#endif

#ifdef CONFIG_STRICT_KERNEL_RWX
static __init pgprot_t pgprot_from_va(uintptr_t va)

Reported by FlawFinder.