Comments (5)
Do you have a stacktrace from the honest node?
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@davidjaenson can you add an automated test for this case? Basically ensure that CheckBlock and AcceptBlock rejects a PoS block with no coinstake tx
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#0 0x00005555557dad94 in CTransaction::IsCoinStake (this=0x74) at ./primitives/transaction.h:397
#1 0x00005555557b6a77 in CheckBlock (block=..., state=..., consensusParams=...,
fCheckPOW=fCheckPOW@entry=true, fCheckMerkleRoot=fCheckMerkleRoot@entry=true,
fCheckSig=fCheckSig@entry=true) at validation.cpp:3546
#2 0x000055555582da48 in PartiallyDownloadedBlock::FillBlock (this=0x7fffac403710, block=...,
vtx_missing=std::vector of length 0, capacity 0) at blockencodings.cpp:202
#3 0x00005555556dda15 in ProcessMessage (pfrom=0x7fffac000020, pfrom@entry=0x7fffbb7fce40,
strCommand="blocktxn", vRecv=..., nTimeReceived=nTimeReceived@entry=93825004973920, chainparams=...,
connman=..., interruptMsgProc=...) at net_processing.cpp:2183
#4 0x00005555556de894 in ProcessMessage (pfrom=0x7fffbb7fce40, pfrom@entry=0x7fffbc0008c0,
strCommand="cmpctblock", vRecv=..., nTimeReceived=93825004973920, chainparams=..., connman=...,
interruptMsgProc=...) at net_processing.cpp:2136
The problem appears to be at
https://github.com/qtumproject/qtum_new/blob/ce3e47d30c9b26e1ee9b36a978664f0ba0a7107e/src/validation.cpp#L3546
which has the potential for being an out of range access
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I was able to repro it and fixed that specific area, look at my latest PR
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Fixed by #144
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