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BugZero found this defect 44 days ago.
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MongoDB | 2634076
endProcessWithSignal should unblock the signal it's trying to send
Last update date:
4/5/2024
Affected products:
MongoDB Server
Affected releases:
No affected releases provided.
Fixed releases:
No fixed releases provided.
Description:
Info
When we receive a signal while processing another signal (e.g., we segfault while we're constructing a backtrace in response to an abort), we detect that case and try to end the process using the default handler for the second signal (in this example, segfault). The goal is to avoid deadlock by starting our signal handler logic re-entrantly, which may result in it trying to take the MallocFreeOStream lock recursively. However, it can be the case that the signal we're trying to send is blocked. In that case, we will deadlock.
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