On 06/26/2015 10:56 AM, Neil Horman wrote: > Hit a warning when building QAT, indicating that sz_out might be uninitalized > before use. Looks like if you hit an error path and jump to err: you might > find > yourself trying to unmap an arbirarily long dma region. Its safe on intel > since > intel defines the invalid dma address as zero, but other arches don't, and if > qat makes its way to one of those, that can cause all sorts of corruption.
Hi Neil, This is a false positive. The sz_out is always initialized before used because the same condition i.e. if (sgl != sglout && buflout) is in the error path as well as on the path where is is initialized. This warning is printed by an old gcc version. If you'll use gcc 4.9 or later it wont print it. It didn't make it's way to linux-crypto for whatever reason so resending again. regards, T -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
