[nvmewin] out of memory in the NVMePreparePRPs function

[Robles, Raymond C]

Hi Cheng,

Thanks for bringing this issue up. I reviewed the code and see the potential issue. Arguably, TxLength should never be larger than the MDTS set by our driver during setup/enum (Storport will honor this max transfer size), but the bug is in the code nevertheless.

Generally, the process for the OFA driver is that when someone, or some company, finds a bug in the OFA driver then they are also asked to submit a patch to resolve that issue. Are you able to submit a patch to resolve this issue?

Thanks,
Ray

From: nvmewin-bounces at lists.openfabrics.org [mailto:nvmewin-bounces at lists.openfabrics.org] On Behalf Of cheng.peng at memblaze.com
Sent: Friday, March 13, 2015 12:28 AM
To: nvmewin
Cc: Ô¬Áˆ
Subject: [nvmewin] out of memory in the NVMePreparePRPs function

Hi,

I get a BSOD when the parameter TxLength of the NVMePreparePRPs function is assigned to a big number(e.g. 1572864)

In this case£¬pSrbExt->numberOfPrpEntries will be a wrong number due to out of memory

I have temporarily solved this problem by setting MAX_TX_SIZE to (2*1024*1024)

I think there should be a better solution

thank you

________________________________
cheng.peng at memblaze.com<mailto:cheng.peng at memblaze.com>
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