力扣两数相加的题目，总是同样的报错，找不出问题在哪

struct ListNode* p1;
struct ListNode* p2;
struct ListNode* p3;
struct ListNode* p4;
struct ListNode* p6;
int num=0;
int m=0;
p1=l1;
p2=l2;
while(p1&&p2){
    p3=(struct ListNode*)malloc(sizeof(struct ListNode));
    if(num==0){
        p6=p3;
        num=1;
    }
    p3->val=0;
    if(m==1){
            p3->val++;
        }
        int c=p1->val+p2->val+p3->val;
        if(c>=10){
        p3->val=c%10;
        m=1;
    }else{
        p3->val=c;
        m=0;
    }
    p1=p1->next;
    p2=p2->next;
    p4=p3;
    p3=p3->next;
}
if(!p1&&p2){
    p4->next=p2;
    if(m==1){
        p2->val++;
    }
    if(p2->val>=10){
        p2->val %= 10;
        if(!p2->next) {
        struct ListNode* p5=(struct ListNode*)malloc(sizeof(struct ListNode));
        p5->val=1;
        p5->next=NULL;
        p2->next=p5;
        }else{
            p2->next->val++;
        }
    }
}
if(!p2&&p1){
    p4->next=p1;
    if(m==1){
        p1->val++;
    }
    if(p1->val>=10){
        p1->val %= 10;
        if(!p1->next) {
        struct ListNode* p5=(struct ListNode*)malloc(sizeof(struct ListNode));
        p5->val=1;
        p5->next=NULL;
        p1->next=p5;
        }else{
            p1->next->val++;
        }
    }
}
if(!p2&&!p1){
    p4->next=NULL;
}
return p6;

Line 70: Char 15: runtime error: member access within misaligned address 0xbebebebebebebebe for type 'struct ListNode', which requires 8 byte alignment [ListNode.c]
0xbebebebebebebebe: note: pointer points here
<memory cannot be printed>

有大佬能帮我看下哪里出问题了吗，改了好几次都是同样的报错

ListNode.C第70行报错，需要8字节参数
报错的代码没放出来啊