Re: [PATCH v2 1/3] scsi: Fix a scsi_show_rq() NULL pointer dereference

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Hi Ming,

> This patch allocates one array for T10_PI_TYPE2_PROTECTION command,
> size of each element is SD_EXT_CDB_SIZE, and the length is
> host->can_queue, then we can retrieve one command buffer runtime
> via rq->tag.
>
> So we can avoid to allocate the command buffer runtime, also the
> recent use-after-free report[1] in scsi_show_rq() can be fixed too.

I'm still mulling over the pros and cons of this one for 4.16+...

-- 
Martin K. Petersen	Oracle Linux Engineering



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