[net/net processing] check banman pointer before dereferencing #19514
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Although we currently don't do this, it should be possible to create a CConnman or PeerLogicValidation without a Banman instance. Therefore always check that banman exists before dereferencing the pointer. Also add comments to the m_banman members of CConnman and PeerLogicValidation to document that these may be nullptr.
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jonatack
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Jul 14, 2020
theStack
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Jul 14, 2020
deadalnix
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Jan 6, 2021
Summary: ``` Although we currently don't do this, it should be possible to create a CConnman or PeerLogicValidation without a Banman instance. Therefore always check that banman exists before dereferencing the pointer. Also add comments to the m_banman members of CConnman and PeerLogicValidation to document that these may be nullptr. ``` Backport of core [[bitcoin/bitcoin#19514 | PR19514]]. Depends on D8794. Test Plan: ninja all check-all Reviewers: #bitcoin_abc, PiRK Reviewed By: #bitcoin_abc, PiRK Differential Revision: https://reviews.bitcoinabc.org/D8795
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Although we currently don't do this, it should be possible to create a
CConnman or PeerLogicValidation without a Banman instance. Therefore
always check that banman exists before dereferencing the pointer.
Also add comments to the m_banman members of CConnman and
PeerLogicValidation to document that these may be nullptr.