Bug ID: 26109
Summary: bug when begin probe exits quickly
Assignee: systemtap at sourceware dot org
Reporter: me at serhei dot io
Target Milestone: ---
if a bpf begin probe sets exit status, the main thread will skip the pause()
call and immediately deallocate global data structures. Then the
perf_event_loop thread will run on the corrupted data and occasionally fail.
Example result is an assertion failure due count_active_cpus() running on
Could change the main thread to join() instead of detach(), but then all
threads must be modified to listen for exit status including exit status from
I think if the begin probe was running, it wasn't correct to start the
perf_event_loop (or PERF_EVENT_IOC_ENABLE, or any of the procfs threads) in the
first place, as those things logically happen after the begin probe has already
exited. Simply clean up and exit.
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