From 31537cf8f3f95d45360b995ad8be2c870edc5b02 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (VMware)" Date: Wed, 8 Jan 2020 08:57:55 -0500 Subject: tracing: Initialize ret in syscall_enter_define_fields() If syscall_enter_define_fields() is called on a system call with no arguments, the return code variable "ret" will never get initialized. Initialize it to zero. Fixes: 04ae87a52074e ("ftrace: Rework event_create_dir()") Reported-by: Qian Cai Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/0FA8C6E3-D9F5-416D-A1B0-5E4CD583A101@lca.pw --- kernel/trace/trace_syscalls.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'kernel/trace') diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 73140d80dd46..2978c29d87d4 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -274,7 +274,8 @@ static int __init syscall_enter_define_fields(struct trace_event_call *call) struct syscall_trace_enter trace; struct syscall_metadata *meta = call->data; int offset = offsetof(typeof(trace), args); - int ret, i; + int ret = 0; + int i; for (i = 0; i < meta->nb_args; i++) { ret = trace_define_field(call, meta->types[i], -- cgit v1.2.3-58-ga151