gfwleak/zhangyang-variable-monitor
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workqueue fix init

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zy
2023-11-27 01:18:15 -05:00
parent 3f724a135b
commit 28c67943e3
4 changed files with 50 additions and 27 deletions
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36
source/module/monitor_trace.c
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@@ -102,7 +102,7 @@ static int copy_stack_frame_remote(struct task_struct *tsk,
}
ret = orig_access_remote_vm(mm, (unsigned long)fp, frame, sizeof(*frame), 0);
printk("copy_stack_frame_remote %d ret:%d\n", tsk->pid, ret);
// printk("copy_stack_frame_remote %d ret:%d\n", tsk->pid, ret);
mmput(mm);
return ret;
@@ -134,30 +134,30 @@ static inline void save_stack_trace_user_remote(struct task_struct *tsk,
frame.ret_addr = 0;
if (!copy_stack_frame_remote(tsk, fp, &frame)) {
printk("save_stack_trace_user_remote %d copy_stack_frame_remote fail\n",
tsk->pid);
// printk("save_stack_trace_user_remote %d copy_stack_frame_remote fail\n",
// tsk->pid);
break;
}
if ((unsigned long)fp < regs->sp) {
printk("save_stack_trace_user_remote %d fp < sp count:%d\n", tsk->pid,
count);
// printk("save_stack_trace_user_remote %d fp < sp count:%d\n", tsk->pid,
// count);
break; // 如果fp小于sp，说明已经到了栈底，退出
}
// 如果返回地址不为0，说明是一个有效的栈帧，保存返回地址
if (frame.ret_addr) {
trace->entries[trace->nr_entries++] = frame.ret_addr;
printk("save_stack_trace_user_remote %d ret_addr:%lx\n", tsk->pid,
frame.ret_addr);
// printk("save_stack_trace_user_remote %d ret_addr:%lx\n", tsk->pid,
// frame.ret_addr);
} else {
printk("save_stack_trace_user_remote %d no ret_addr", tsk->pid);
// printk("save_stack_trace_user_remote %d no ret_addr", tsk->pid);
break;
// continue;
}
// 如果fp指向自己，说明已经到了栈底，退出
if (fp == frame.next_fp) {
printk("save_stack_trace_user_remote %d fp == next_fp", tsk->pid);
// printk("save_stack_trace_user_remote %d fp == next_fp", tsk->pid);
break;
}
fp = frame.next_fp; // 否则，继续向下遍历
@@ -237,18 +237,18 @@ static void diagnose_save_stack_trace_user_remote(struct task_struct *tsk,
* Trace user stack if we are not a kernel thread
*/
if (tsk->mm) {
printk("save_stack_trace_user_remote %d mm\n", tsk->pid);
// printk("save_stack_trace_user_remote %d mm\n", tsk->pid);
save_stack_trace_user_remote(tsk, &trace);
}
if (trace.nr_entries < trace.max_entries)
trace.entries[trace.nr_entries++] = ULONG_MAX;
printk("save_stack_trace_user_remote %d, stack: [", tsk->pid);
int i = 0;
for (i = 0; i < BACKTRACE_DEPTH; i++) {
printk("%lx, ", backtrace[i]);
}
printk("]\n");
// printk("save_stack_trace_user_remote %d, stack: [", tsk->pid);
// int i = 0;
// for (i = 0; i < BACKTRACE_DEPTH; i++) {
// printk("%lx, ", backtrace[i]);
// }
// printk("]\n");
}
static int diagnose_task_raw_stack_remote(struct task_struct *tsk, void *to,
@@ -384,10 +384,10 @@ void diag_task_user_stack(struct task_struct *tsk, user_stack_detail *detail) {
detail->bp = bp;
if (tsk == current) {
printk("diag_task_user_stack %d current\n", tsk->pid);
// printk("diag_task_user_stack %d current\n", tsk->pid);
diagnose_save_stack_trace_user(detail->stack);
} else {
printk("diag_task_user_stack %d no current\n", tsk->pid);
// printk("diag_task_user_stack %d no current\n", tsk->pid);
diagnose_save_stack_trace_user_remote(tsk, detail->stack);
}
}