linux-kernel - dmapool regression in next

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Date:   Wed, 5 Dec 2018 17:30:54 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Tony Battersby <tonyb@...ernetics.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Christoph Hellwig <hch@....de>,
        John Garry <john.garry@...wei.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-omap@...r.kernel.org
Subject: dmapool regression in next

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
...