Re: [PATCH v2] scsi: hisi_sas: Fix NULL pointer dereference

[Martin K. Petersen]

Gustavo,

> There is a NULL pointer dereference in case *slot* happens to
> be NULL at lines 1053 and 1878:
>
> struct hisi_sas_cq *cq =
> 	&hisi_hba->cq[slot->dlvry_queue];
>
> Notice that *slot* is being NULL checked at lines 1057 and 1881:
> if (slot), which implies it may be NULL.
>
> Fix this by placing the declaration and definition of variable cq,
> which contains the pointer dereference slot->dlvry_queue, after
> slot has been properly NULL checked.

Applied to 4.20/scsi-queue, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering