chore: log error for missing kernel CONFIG_MEMCG flag

exein-io · Feb 27, 2024 · 9c94e43 · 9c94e43
1 parent 6058223
commit 9c94e43
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crates/modules/process-monitor/probes.bpf.c b/crates/modules/process-monitor/probes.bpf.c
@@ -179,7 +179,10 @@ static __always_inline int get_container_info(struct task_struct *cur_tsk, char
   if (bpf_core_enum_value_exists(enum cgroup_subsys_id, memory_cgrp_id))
     cgrp_id = bpf_core_enum_value(enum cgroup_subsys_id, memory_cgrp_id);
   else
+  {
+    LOG_ERROR("failed to read memory cgroup id. make sure `CONFIG_MEMCG` is enabled in the kernel configuration\n");
     return FAILED_READ_MEMORY_CGROUP_ID;
+  }
 
   const char *name = BPF_CORE_READ(cur_tsk, cgroups, subsys[cgrp_id], cgroup, kn, name);
   if (bpf_probe_read_kernel_str(buf, sz, name) < 0)