linux-kernel - Re: [PATCH] sym53c8xx: Avoid undefined behaviour in drivers/scsi/sym53c8xx_2/sym

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Message-ID: <yq1d17xwmtz.fsf@oracle.com>
Date:   Mon, 14 Aug 2017 23:07:20 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Helge Deller <deller@....de>
Cc:     linux-scsi@...r.kernel.org,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        linux-kernel@...r.kernel.org, linux-parisc@...r.kernel.org
Subject: Re: [PATCH] sym53c8xx: Avoid undefined behaviour in drivers/scsi/sym53c8xx_2/sym_hipd.c:762


Helge,

> On parisc I see this UBSAN warning with a sym53c896:
>
>  UBSAN: Undefined behaviour in ./drivers/scsi/sym53c8xx_2/sym_hipd.c:762:24
>  index -1903078336 is out of range for type 'u32 [7]'
>
> Avoid this warning by switching to dev64_ul().

Applied to 4.14/scsi-queue. Thank you, Helge!

-- 
Martin K. Petersen	Oracle Linux Engineering