linux-kernel - Re: [PATCH] mpt3sas: Don't overreach ioc->reply

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Message-ID: <yq1io0f5p8a.fsf@sermon.lab.mkp.net>
Date:	Mon, 21 Mar 2016 20:29:57 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Calvin Owens <calvinowens@...com>
Cc:	Sathya Prakash <sathya.prakash@...adcom.com>,
	Chaitra P B <chaitra.basappa@...adcom.com>,
	Suganath Prabu Subramani 
	<suganath-prabu.subramani@...adcom.com>,
	"James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	<MPT-FusionLinux.pdl@...adcom.com>, <linux-scsi@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <kernel-team@...com>,
	Sreekanth Reddy <sreekanth.reddy@...adcom.com>
Subject: Re: [PATCH] mpt3sas: Don't overreach ioc->reply_post[] during initialization

>>>>> "Calvin" == Calvin Owens <calvinowens@...com> writes:

Calvin> In _base_make_ioc_operational(), we walk ioc->reply_queue_list
Calvin> and pull a pointer out of successive elements of
Calvin> ioc->reply_post[] for each entry in that list if RDPQ is
Calvin> enabled.

Calvin> Since the code pulls the pointer for the next iteration at the
Calvin> bottom of the loop, it triggers the a KASAN dump on the final
Calvin> iteration:

Broadcom folks, please review.

Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering