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Date:   Wed, 5 Dec 2018 17:30:54 -0800
From:   Tony Lindgren <tony@atomide.com>
To:     Tony Battersby <tonyb@cybernetics.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>
Cc:     Andy Shevchenko <andy.shevchenko@gmail.com>,
        Christoph Hellwig <hch@lst.de>,
        John Garry <john.garry@huawei.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Russell King - ARM Linux <linux@armlinux.org.uk>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-omap@vger.kernel.org
Subject: dmapool regression in next
Message-ID: <20181206013054.GI6707@atomide.com>
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Hi,

Looks like with commit 26abe88e830d ("mm/dmapool.c: improve scalability
of dma_pool_free()") I'm now getting spammed with lots of "(bad vaddr)"
on at least omap4 pandaboard, see below.

Any ideas what might be going wrong?

Regards,

Tony

8< ---------------------
omap-dma-engine 4a056000.dma-controller: dma_pool_free 4a056000.dma-controller, (ptrval) (bad vaddr)/0xbe800000
omap-dma-engine 4a056000.dma-controller: dma_pool_free 4a056000.dma-controller, (ptrval) (bad vaddr)/0xbe80001c
omap-dma-engine 4a056000.dma-controller: dma_pool_free 4a056000.dma-controller, (ptrval) (bad vaddr)/0xbe800038
...