From: Steven Rostedt (VMware) <rostedt@goodmis.org>
Date: Fri, 15 Nov 2019 19:13:20 +0000 (-0500)
Subject: ftrace: Fix accounting bug with direct->count in register_ftrace_direct()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1c7f9b673dc0a15753274c4e7f5ebfd4468fc69f;p=linux.git

ftrace: Fix accounting bug with direct->count in register_ftrace_direct()

The direct->count wasn't being updated properly, where it only was updated
when the first entry was added, but should be updated every time.

Fixes: 013bf0da04748 ("ftrace: Add ftrace_find_direct_func()")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 834f3556ea1e1..32e4e5ffdd974 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -5093,8 +5093,7 @@ int register_ftrace_direct(unsigned long ip, unsigned long addr)
 			ftrace_direct_func_count--;
 		}
 	} else {
-		if (!direct->count)
-			direct->count++;
+		direct->count++;
 	}
  out_unlock:
 	mutex_unlock(&direct_mutex);