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Ignore the result of pthread_kill in ubf_wakeup_thread

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After an upgrade to Ruby 3.3.0, I experienced reproducible production crashes
of the form:

[BUG] pthread_kill: No such process (ESRCH)

This is the only pthread_kill call in Ruby. The result of pthread_kill was
previously ignored in Ruby 3.2 and below. Checking the result was added in
be1bbd5b7d40ad863ab35097765d3754726bbd54 (MaNy).

I have not yet been able to create a minimal self-contained example,
but it should be safe to remove the checks.
This commit is contained in:
Jeremy Evans 2024-04-21 18:51:25 -07:00
parent 8ec1c416f7
commit ef3803ed40
1 changed files with 1 additions and 4 deletions
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5
thread_pthread.c
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@ -2569,10 +2569,7 @@ ubf_wakeup_thread(rb_thread_t *th)
{
RUBY_DEBUG_LOG("th:%u thread_id:%p", rb_th_serial(th), (void *)th->nt->thread_id);
int r = pthread_kill(th->nt->thread_id, SIGVTALRM);
if (r != 0) {
rb_bug_errno("pthread_kill", r);
}
pthread_kill(th->nt->thread_id, SIGVTALRM);
}
static void