kprobe_example.c (4f2c0a4acffbec01079c28f839422e64ddeff004) kprobe_example.c (a6484baa3b02b9d71bfd6016e7632dd1c02d5cba)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Here's a sample kernel module showing the use of kprobes to dump a
4 * stack trace and selected registers when kernel_clone() is called.
5 *
6 * For more information on theory of operation of kprobes, see
7 * Documentation/trace/kprobes.rst
8 *

--- 41 unchanged lines hidden (view full) ---

50#ifdef CONFIG_RISCV
51 pr_info("<%s> p->addr = 0x%p, pc = 0x%lx, status = 0x%lx\n",
52 p->symbol_name, p->addr, regs->epc, regs->status);
53#endif
54#ifdef CONFIG_S390
55 pr_info("<%s> p->addr, 0x%p, ip = 0x%lx, flags = 0x%lx\n",
56 p->symbol_name, p->addr, regs->psw.addr, regs->flags);
57#endif
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Here's a sample kernel module showing the use of kprobes to dump a
4 * stack trace and selected registers when kernel_clone() is called.
5 *
6 * For more information on theory of operation of kprobes, see
7 * Documentation/trace/kprobes.rst
8 *

--- 41 unchanged lines hidden (view full) ---

50#ifdef CONFIG_RISCV
51 pr_info("<%s> p->addr = 0x%p, pc = 0x%lx, status = 0x%lx\n",
52 p->symbol_name, p->addr, regs->epc, regs->status);
53#endif
54#ifdef CONFIG_S390
55 pr_info("<%s> p->addr, 0x%p, ip = 0x%lx, flags = 0x%lx\n",
56 p->symbol_name, p->addr, regs->psw.addr, regs->flags);
57#endif
58#ifdef CONFIG_LOONGARCH
59 pr_info("<%s> p->addr = 0x%p, era = 0x%lx, estat = 0x%lx\n",
60 p->symbol_name, p->addr, regs->csr_era, regs->csr_estat);
61#endif
58
59 /* A dump_stack() here will give a stack backtrace */
60 return 0;
61}
62
63/* kprobe post_handler: called after the probed instruction is executed */
64static void __kprobes handler_post(struct kprobe *p, struct pt_regs *regs,
65 unsigned long flags)

--- 21 unchanged lines hidden (view full) ---

87#ifdef CONFIG_RISCV
88 pr_info("<%s> p->addr = 0x%p, status = 0x%lx\n",
89 p->symbol_name, p->addr, regs->status);
90#endif
91#ifdef CONFIG_S390
92 pr_info("<%s> p->addr, 0x%p, flags = 0x%lx\n",
93 p->symbol_name, p->addr, regs->flags);
94#endif
62
63 /* A dump_stack() here will give a stack backtrace */
64 return 0;
65}
66
67/* kprobe post_handler: called after the probed instruction is executed */
68static void __kprobes handler_post(struct kprobe *p, struct pt_regs *regs,
69 unsigned long flags)

--- 21 unchanged lines hidden (view full) ---

91#ifdef CONFIG_RISCV
92 pr_info("<%s> p->addr = 0x%p, status = 0x%lx\n",
93 p->symbol_name, p->addr, regs->status);
94#endif
95#ifdef CONFIG_S390
96 pr_info("<%s> p->addr, 0x%p, flags = 0x%lx\n",
97 p->symbol_name, p->addr, regs->flags);
98#endif
99#ifdef CONFIG_LOONGARCH
100 pr_info("<%s> p->addr = 0x%p, estat = 0x%lx\n",
101 p->symbol_name, p->addr, regs->csr_estat);
102#endif
95}
96
97static int __init kprobe_init(void)
98{
99 int ret;
100 kp.pre_handler = handler_pre;
101 kp.post_handler = handler_post;
102

--- 18 unchanged lines hidden --- 		103}
104
105static int __init kprobe_init(void)
106{
107 int ret;
108 kp.pre_handler = handler_pre;
109 kp.post_handler = handler_post;
110

--- 18 unchanged lines hidden ---