diff options
Diffstat (limited to 'kernel/trace/trace_ksym.c')
-rw-r--r-- | kernel/trace/trace_ksym.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c index 11935b53a6cb..9f040e42f516 100644 --- a/kernel/trace/trace_ksym.c +++ b/kernel/trace/trace_ksym.c | |||
@@ -339,14 +339,20 @@ static ssize_t ksym_trace_filter_write(struct file *file, | |||
339 | ksym_hbp_handler, true); | 339 | ksym_hbp_handler, true); |
340 | if (IS_ERR(entry->ksym_hbp)) | 340 | if (IS_ERR(entry->ksym_hbp)) |
341 | entry->ksym_hbp = NULL; | 341 | entry->ksym_hbp = NULL; |
342 | if (!entry->ksym_hbp) | 342 | |
343 | /* modified without problem */ | ||
344 | if (entry->ksym_hbp) { | ||
345 | ret = 0; | ||
343 | goto out; | 346 | goto out; |
347 | } | ||
348 | } else { | ||
349 | ret = 0; | ||
344 | } | 350 | } |
351 | /* Error or "symbol:---" case: drop it */ | ||
345 | ksym_filter_entry_count--; | 352 | ksym_filter_entry_count--; |
346 | hlist_del_rcu(&(entry->ksym_hlist)); | 353 | hlist_del_rcu(&(entry->ksym_hlist)); |
347 | synchronize_rcu(); | 354 | synchronize_rcu(); |
348 | kfree(entry); | 355 | kfree(entry); |
349 | ret = 0; | ||
350 | goto out; | 356 | goto out; |
351 | } else { | 357 | } else { |
352 | /* Check for malformed request: (4) */ | 358 | /* Check for malformed request: (4) */ |