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First time I see this. Check if it rings bell.
Created attachment 15770 [details] threaddump
Nope, never saw it. Looks like a lock ordering conflict.
Jesse, worksforme?
Well the fact that it occurred once is enough to make it worth considering a different approach. Given that it has not (AFAIK) happened again, probably P2 is too high.
*** Issue 47015 has been marked as a duplicate of this issue. ***
Can just simplify the locks.
See issue #43609 for commit info.
This issue was solved long time ago. Because nobody has reopened it neither added comments, we are verifying/closing it now. If you are still able to reproduce the problem, please reopen. Thanks in advance.