diff options
Diffstat (limited to 'kernel/kprobes.c')
-rw-r--r-- | kernel/kprobes.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 9788c0ec6f43..c62b8546cc90 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 | ||
1412 | fail_with_jump_label: | 1414 | cannot_probe: |
1413 | preempt_enable(); | 1415 | preempt_enable(); |
1414 | jump_label_unlock(); | 1416 | jump_label_unlock(); |
1415 | return ret; | 1417 | return ret; |