8000 chore: use map instead of stack to store task_info by yanivagman · Pull Request #3920 · aquasecurity/tracee · GitHub
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chore: use map instead of stack to store task_info #3920

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Mar 14, 2024
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chore: use map instead of stack to store task_info #3920

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19 changes: 12 additions & 7 deletions pkg/ebpf/c/tracee.bpf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -506,15 +506,20 @@ int tracepoint__sched__sched_process_fork(struct bpf_raw_tracepoint_args *ctx)

// Update the task_info map with the new task's info

task_info_t task = {};
__builtin_memcpy(&task, p.task_info, sizeof(task_info_t));
task.recompute_scope = true;
task.context.tid = child_ns_tid;
task.context.host_tid = child_tid;
task.context.start_time = child_start_time;
ret = bpf_map_update_elem(&task_info_map, &task.context.host_tid, &task, BPF_ANY);
ret = bpf_map_update_elem(&task_info_map, &child_tid, p.task_info, BPF_ANY);
if (ret < 0)
tracee_log(ctx, BPF_LOG_LVL_DEBUG, BPF_LOG_ID_MAP_UPDATE_ELEM, ret);
task_info_t *task = bpf_map_lookup_elem(&task_info_map, &child_tid);
if (unlikely(task == NULL)) {
// this should never happen - we just updated the map with this key
tracee_log(ctx, BPF_LOG_LVL_WARN, BPF_LOG_ID_MAP_LOOKUP_ELEM, 0);
return 0;
}

task->recompute_scope = true;
task->context.tid = child_ns_tid;
task->context.host_tid = child_tid;
task->context.start_time = child_start_time;

// Update the proc_info_map with the new process's info (from parent)

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