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Fix race condition in signal handler query (#13712)

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* Fix race condition in signal handler query

* Initialize signal lock dynamically and reset after fork

* Fix signal handler mutex initialization conditions
This commit is contained in:
Erik Berlin 2025-06-27 21:55:59 -07:00 • committed by GitHub
parent 31c1f3665a
commit eab4a0bc8d
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3 changed files with 21 additions and 2 deletions
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thread.c
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@ -4933,6 +4933,7 @@ rb_thread_atfork_internal(rb_thread_t *th, void (*atfork)(rb_thread_t *, const r
thread_sched_atfork(TH_SCHED(th));
ubf_list_atfork();
rb_signal_atfork();
// OK. Only this thread accesses:
ccan_list_for_each(&vm->ractor.set, r, vmlr_node) {