69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
#include "monitor_kallsyms.h"
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unsigned long (*diag_kallsyms_lookup_name)(const char *name);
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struct kprobe kprobe_kallsyms_lookup_name = {.symbol_name =
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"kallsyms_lookup_name"};
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// orig_fun
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unsigned int (*orig_stack_trace_save_tsk)(struct task_struct *task,
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unsigned long *store,
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unsigned int size,
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unsigned int skipnr);
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void (*orig_show_stack)(struct task_struct *task, unsigned long *sp,
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const char *loglvl);
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struct sched_class *orig_idle_sched_class;
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int (*orig_get_task_type)(struct sched_entity *se);
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int (*orig_kernfs_name)(struct kernfs_node *kn, char *buf, size_t buflen);
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int (*orig_access_remote_vm)(struct mm_struct *mm, unsigned long addr,
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void *buf, int len, unsigned int gup_flags);
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struct task_struct *(*orig_find_task_by_vpid)(pid_t nr);
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void (*orig_open_softirq)(int nr, void (*action)(struct softirq_action *));
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void (*orig_raise_softirq)(unsigned int nr);
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/**
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* @brief diag_kallsyms_lookup_name init
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*
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* @return int
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*/
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static int fn_kallsyms_lookup_name_init(void) {
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register_kprobe(&kprobe_kallsyms_lookup_name);
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diag_kallsyms_lookup_name = (void *)kprobe_kallsyms_lookup_name.addr;
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unregister_kprobe(&kprobe_kallsyms_lookup_name);
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printk(KERN_INFO "diag_kallsyms_lookup_name is %p\n",
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diag_kallsyms_lookup_name);
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if (!diag_kallsyms_lookup_name) {
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return -EINVAL;
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}
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return 0;
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}
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/**
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* @brief get all orig_fun
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*
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* @return int 0 is success
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*/
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int init_orig_fun(void) {
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int ret = fn_kallsyms_lookup_name_init(); // init kallsyms_lookup_name
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if (ret) {
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printk(KERN_INFO "init kallsyms_lookup_name failed\n");
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return ret;
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}
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LOOKUP_SYMS(stack_trace_save_tsk); // stack_trace_save_tsk
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LOOKUP_SYMS(show_stack); // show_stack
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LOOKUP_SYMS(idle_sched_class); // idle_sched_class
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LOOKUP_SYMS(access_remote_vm); // access_remote_vm
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LOOKUP_SYMS_NORET(
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get_task_type); // get_task_type | this fun is not available on 5.17.15
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LOOKUP_SYMS_NORET(kernfs_name); // kernfs_name
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LOOKUP_SYMS_NORET(find_task_by_vpid);
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LOOKUP_SYMS_NORET(open_softirq);
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LOOKUP_SYMS_NORET(raise_softirq);
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return 0;
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}
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