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Diffstat (limited to 'kernel/kprobes.c')
-rw-r--r--kernel/kprobes.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 9788c0ec6f4..c62b8546cc9 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1334,8 +1334,10 @@ int __kprobes register_kprobe(struct kprobe *p)
1334 if (!kernel_text_address((unsigned long) p->addr) || 1334 if (!kernel_text_address((unsigned long) p->addr) ||
1335 in_kprobes_functions((unsigned long) p->addr) || 1335 in_kprobes_functions((unsigned long) p->addr) ||
1336 ftrace_text_reserved(p->addr, p->addr) || 1336 ftrace_text_reserved(p->addr, p->addr) ||
1337 jump_label_text_reserved(p->addr, p->addr)) 1337 jump_label_text_reserved(p->addr, p->addr)) {
1338 goto fail_with_jump_label; 1338 ret = -EINVAL;
1339 goto cannot_probe;
1340 }
1339 1341
1340 /* User can pass only KPROBE_FLAG_DISABLED to register_kprobe */ 1342 /* User can pass only KPROBE_FLAG_DISABLED to register_kprobe */
1341 p->flags &= KPROBE_FLAG_DISABLED; 1343 p->flags &= KPROBE_FLAG_DISABLED;
@@ -1352,7 +1354,7 @@ int __kprobes register_kprobe(struct kprobe *p)
1352 * its code to prohibit unexpected unloading. 1354 * its code to prohibit unexpected unloading.
1353 */ 1355 */
1354 if (unlikely(!try_module_get(probed_mod))) 1356 if (unlikely(!try_module_get(probed_mod)))
1355 goto fail_with_jump_label; 1357 goto cannot_probe;
1356 1358
1357 /* 1359 /*
1358 * If the module freed .init.text, we couldn't insert 1360 * If the module freed .init.text, we couldn't insert
@@ -1361,7 +1363,7 @@ int __kprobes register_kprobe(struct kprobe *p)
1361 if (within_module_init((unsigned long)p->addr, probed_mod) && 1363 if (within_module_init((unsigned long)p->addr, probed_mod) &&
1362 probed_mod->state != MODULE_STATE_COMING) { 1364 probed_mod->state != MODULE_STATE_COMING) {
1363 module_put(probed_mod); 1365 module_put(probed_mod);
1364 goto fail_with_jump_label; 1366 goto cannot_probe;
1365 } 1367 }
1366 /* ret will be updated by following code */ 1368 /* ret will be updated by following code */
1367 } 1369 }
@@ -1409,7 +1411,7 @@ out:
1409 1411
1410 return ret; 1412 return ret;
1411 1413
1412fail_with_jump_label: 1414cannot_probe:
1413 preempt_enable(); 1415 preempt_enable();
1414 jump_label_unlock(); 1416 jump_label_unlock();
1415 return ret; 1417 return ret;