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From: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: sachinp <sachinp@linux.vnet.ibm.com>,
	Chaitra P B <chaitra.basappa@broadcom.com>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	MPT-FusionLinux.pdl@broadcom.com,
	manvanth <manvanth@linux.vnet.ibm.com>,
	Sathya Prakash <sathya.prakash@broadcom.com>,
	jcmvbkbc@gmail.com, iommu@lists.linux-foundation.org,
	linux-next <linux-next@vger.kernel.org>,
	Oliver <oohall@gmail.com>,
	"aneesh.kumar" <aneesh.kumar@linux.vnet.ibm.com>,
	Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>,
	Brian King <brking@linux.vnet.ibm.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [linux-next/mainline][bisected 3acac06][ppc] Oops when unloading mpt3sas driver
Date: Tue, 25 Feb 2020 11:50:44 +0530
Message-ID: <1582611644.19645.6.camel@abdul.in.ibm.com> (raw)
In-Reply-To: <1579265473.17382.5.camel@abdul>

On Fri, 2020-01-17 at 18:21 +0530, Abdul Haleem wrote:
> On Thu, 2020-01-16 at 09:44 -0800, Christoph Hellwig wrote:
> > Hi Abdul,
> > 
> > I think the problem is that mpt3sas has some convoluted logic to do
> > some DMA allocations with a 32-bit coherent mask, and then switches
> > to a 63 or 64 bit mask, which is not supported by the DMA API.
> > 
> > Can you try the patch below?
> 
> Thank you Christoph, with the given patch applied the bug is not seen.
> 
> rmmod of mpt3sas driver is successful, no kernel Oops
> 
> Reported-and-tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>

Hi Christoph,

I see the patch is under discussion, will this be merged upstream any
time soon ? as boot is broken on our machines with out your patch.

-- 
Regard's

Abdul Haleem
IBM Linux Technology Centre




  reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-08 13:18 Abdul Haleem
2020-01-09  8:57 ` Abdul Haleem
2020-01-09 14:22   ` Christoph Hellwig
2020-01-14  5:47     ` Abdul Haleem
2020-01-16  6:42       ` Michael Ellerman
2020-01-16 17:44       ` Christoph Hellwig
2020-01-17 12:51         ` Abdul Haleem
2020-02-25  6:20           ` Abdul Haleem [this message]
2020-02-25  6:53             ` Sreekanth Reddy
2020-03-20  9:59               ` Abdul Haleem

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