messages: fix deadlock #3263
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messages: fix deadlock #3263
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BUG=67060474 The following deadlock is possible: 1. runSend obtains a lock. 2. Poller gets trigerred, and waits for lock. 3. runSend calls this poller trigger, but the trigger will hang because it cannot return until poller returns. Unfortunately, this race is not reproduceable in a test because it's a CPU vs. CPU race. So, we just have to rely on reasoning.
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LGTM |
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BUG=67060474
The following deadlock is possible:
it cannot return until poller returns.
Unfortunately, this race is not reproduceable in a test because it's
a CPU vs. CPU race. So, we just have to rely on reasoning.