diff options
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index eda69c9f78d0..6ef1989c2b2e 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2208,6 +2208,14 @@ static int ftrace_save_ops_tramp_hash(struct ftrace_ops *ops) if (ftrace_rec_count(rec) == 1 && ftrace_ops_test(ops, rec->ip, rec)) { + /* + * If another ops adds to a rec, the rec will + * lose its trampoline and never get it back + * until all ops are off of it. + */ + if (!(rec->flags & FTRACE_FL_TRAMP)) + continue; + /* This record had better have a trampoline */ if (FTRACE_WARN_ON(!(rec->flags & FTRACE_FL_TRAMP_EN))) return -1; |