Re: [bug report] scsi: mpt3sas: Handle RDPQ DMA allocation in same 4G region

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This also causes a bug in the callers.

    drivers/scsi/mpt3sas/mpt3sas_base.c:7428 mpt3sas_base_attach()
    warn: 'ioc->hpr_lookup' double freed

We free the pointers, then return an error and the caller frees the
pointers as well.

Smatch is very limited in the types of double frees it looks for.
It really requires someone to manually go through the free paths and
check it by hand because I'm sure there are other bugs there as well.

Please CC me on the Fix because I'm not subscribed to the linux-scsi
mailing list.

regards,
dan carpenter




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