mirror of https://github.com/bitcoin/bitcoin.git
63e8fc912c
Add ubsan suppressions for integer overflows in the getchaintxstats RPC. getchainstatstx line "int nTxDiff = pindex->nChainTx - past_block.nChainTx" can trigger ubsan integer overflows when assumeutxo snapshots are loaded, from subtracting unsigned values and assigning the result to a signed int. The overflow behavior probably exists in current code but is hard to trigger because it would require calling getchainstatstx at the right time with specific parameters as background blocks are being downloaded. But the overflow behavior becomes easier to trigger in the upcoming commit removing fake nChainTx values, so a suppression needs to be added before then for CI to pass. getchainstatstx should probably be improved separately in another PR to not need this suppression, and handle edge cases and missing nChainTx values more carefully. |
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| lsan | ||
| tsan | ||
| ubsan | ||