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Guard the shutdown log wakeup against an unallocated notify array #13541

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Guard the shutdown log wakeup against an unallocated notify array #13541

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e78d924
Guard the shutdown log wakeup against an unallocated notify array
bryancall Aug 13, 2026
6f9f2b1
Widen the comment to cover the permanent null case
bryancall Aug 13, 2026
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10 changes: 7 additions & 3 deletions src/traffic_server/traffic_server.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -309,9 +309,13 @@ struct AutoStopCont : public Continuation {
CacheShm::mark_clean_shutdown();
}

// Wake preproc threads to drain remaining log buffers before exit.
for (int i = 0; i < Log::preproc_threads; i++) {
Log::preproc_notify[i].signal();
// Wake preproc threads to drain remaining log buffers before exit. The notify array is allocated only once the log
// threads are spawned, which has not happened yet this early in startup and never happens at all for the log-only
// tools, so a null array means there is no preproc thread in existence and nothing to wake.
if (Log::preproc_notify != nullptr) {
for (int i = 0; i < Log::preproc_threads; i++) {
Log::preproc_notify[i].signal();
}
}
delete this;
return EVENT_CONT;
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