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fix(ebpf): check bpf_core_read return for task->exit_code #633

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fix(ebpf): check bpf_core_read return for task->exit_code #633

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3 changes: 2 additions & 1 deletion ebpf/container_monitor.c
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Original file line number Diff line number Diff line change
Expand Up @@ -131,7 +131,8 @@ int handle_exit(struct trace_event_raw_sched_process_exit *ctx) {
// Read exit_code from task_struct (CO-RE: field offset resolved at load time via BTF)
// exit_code format: (exit_code << 8) | signal
__u32 exit_code = 0;
bpf_core_read(&exit_code, sizeof(exit_code), &task->exit_code);
if (bpf_core_read(&exit_code, sizeof(exit_code), &task->exit_code) != 0)
return 0;

__s32 code = exit_code >> 8;
__s32 sig = exit_code & 0x7F;
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