From 357571b1d81db4915baf0e335ce337b3a6f9d7a9 Mon Sep 17 00:00:00 2001
From: Xiaobo Liu <cppcoffee@gmail.com>
Date: Wed, 16 Oct 2024 09:04:04 +0800
Subject: [PATCH] ebpf: bpf_get_current_comm() does not use fixed length

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>
---
 ebpf/aya-ebpf/src/helpers.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ebpf/aya-ebpf/src/helpers.rs b/ebpf/aya-ebpf/src/helpers.rs
index 6720bc72..139d3643 100644
--- a/ebpf/aya-ebpf/src/helpers.rs
+++ b/ebpf/aya-ebpf/src/helpers.rs
@@ -620,7 +620,8 @@ pub unsafe fn bpf_probe_write_user<T>(dst: *mut T, src: *const T) -> Result<(),
 #[inline]
 pub fn bpf_get_current_comm() -> Result<[u8; 16], c_long> {
     let mut comm: [u8; 16usize] = [0; 16];
-    let ret = unsafe { gen::bpf_get_current_comm(&mut comm as *mut _ as *mut c_void, 16u32) };
+    let ret =
+        unsafe { gen::bpf_get_current_comm(&mut comm as *mut _ as *mut c_void, comm.len() as u32) };
     if ret == 0 {
         Ok(comm)
     } else {