Fix command arity check in IO threads#14134
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sundb
approved these changes
Jun 18, 2025
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We need to check the command arity in IO threads, if it is not correct, we should reset it, as we may do memory prefetching according to the
iolookedcmd. Accessingargvusing the key positions returned bygetKeysFromCommandis unsafe and must be avoided for invalid commands. Otherwise, this may lead to invalid memory access and potentially cause the redis to crash.This bug starts to have an impact after #14017