linux-imx
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committed 5a6cf77f5e3x
if (posth_val == 0) { pr_err("kprobe post_handler2 not called\n"); handler_errors++; } unregister_kprobes(kps, 2); return 0;}#if 0static u32 jph_val;static u32 j_kprobe_target(u32 value){ if (preemptible()) { handler_errors++; pr_err("jprobe-handler is preemptible\n"); } if (value != rand1) { handler_errors++; pr_err("incorrect value in jprobe handler\n"); } jph_val = rand1; jprobe_return(); return 0;}static struct jprobe jp = { .entry = j_kprobe_target, .kp.symbol_name = "kprobe_target"};static int test_jprobe(void){ int ret; ret = register_jprobe(&jp); if (ret < 0) { pr_err("register_jprobe returned %d\n", ret); return ret; } ret = target(rand1); unregister_jprobe(&jp); if (jph_val == 0) { pr_err("jprobe handler not called\n"); handler_errors++; } return 0;}static struct jprobe jp2 = { .entry = j_kprobe_target, .kp.symbol_name = "kprobe_target2"};static int test_jprobes(void){ int ret; struct jprobe *jps[2] = {&jp, &jp2}; /* addr and flags should be cleard for reusing kprobe. */ jp.kp.addr = NULL; jp.kp.flags = 0; ret = register_jprobes(jps, 2); if (ret < 0) { pr_err("register_jprobes returned %d\n", ret); return ret; } jph_val = 0; ret = target(rand1); if (jph_val == 0) { pr_err("jprobe handler not called\n"); handler_errors++; } jph_val = 0; ret = target2(rand1); if (jph_val == 0) { pr_err("jprobe handler2 not called\n"); handler_errors++; } unregister_jprobes(jps, 2); return 0;}#else#define test_jprobe() (0)#define test_jprobes() (0)#endif#ifdef CONFIG_KRETPROBESstatic u32 krph_val;static int entry_handler(struct kretprobe_instance *ri, struct pt_regs *regs){ if (preemptible()) { handler_errors++; pr_err("kretprobe entry handler is preemptible\n"); } krph_val = (rand1 / div_factor); num_tests++; ret = test_kprobe(); if (ret < 0) errors++; num_tests++; ret = test_kprobes(); if (ret < 0) errors++; num_tests++; ret = test_jprobe(); if (ret < 0) errors++; num_tests++; ret = test_jprobes(); if (ret < 0) errors++;#ifdef CONFIG_KRETPROBES num_tests++; ret = test_kretprobe(); if (ret < 0) errors++; num_tests++; ret = test_kretprobes(); if (ret < 0) errors++;