diff options
| author |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-01-08 08:57:55 -0500 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2020-01-17 10:19:18 +0100 |
| commit | 31537cf8f3f95d45360b995ad8be2c870edc5b02 (patch) | |
| tree | 7d1ce73ea0f894260c5598db5aa60d0a48357b94 /kernel | |
| parent | kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic (diff) | |
| download | linux-dev-31537cf8f3f95d45360b995ad8be2c870edc5b02.tar.xz linux-dev-31537cf8f3f95d45360b995ad8be2c870edc5b02.zip | |
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 <cai@lca.pw>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/0FA8C6E3-D9F5-416D-A1B0-5E4CD583A101@lca.pw
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_syscalls.c | 3 |
1 files changed, 2 insertions, 1 deletions
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], |