[PATCH] kprobes: Replace memcpy() with direct assignment
From: Tiezhu Yang
Date: Tue Jan 31 2023 - 07:02:03 EST
Just do a direct assignment, then give a chance to probe memcpy()
for some archs or kernel versions which do not blacklist memcpy().
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
kernel/kprobes.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 1c18ecf..5a3cf9f 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -407,8 +407,8 @@ static inline bool kprobe_unused(struct kprobe *p)
/* Keep all fields in the kprobe consistent. */
static inline void copy_kprobe(struct kprobe *ap, struct kprobe *p)
{
- memcpy(&p->opcode, &ap->opcode, sizeof(kprobe_opcode_t));
- memcpy(&p->ainsn, &ap->ainsn, sizeof(struct arch_specific_insn));
+ p->opcode = ap->opcode;
+ p->ainsn = ap->ainsn;
}
#ifdef CONFIG_OPTPROBES
--
2.1.0