From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: Hit BUG_ON in dma-mapping.c:425
Date: Wed, 5 Jan 2011 16:55:51 +0000 [thread overview]
Message-ID: <20110105165551.GE8638@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <4D24A108.2080609@atmel.com>
On Wed, Jan 05, 2011 at 05:49:12PM +0100, Nicolas Ferre wrote:
> Hi,
>
> While running mtd_stresstest on a dataflash (atmel_spi
> + mtd_dataflash drivers) I hit the BUG_ON directive that
> is at the beginning of ___dma_single_cpu_to_dev() function.
> This function is called from the SPI driver that do a
> dma_map_single() before DMA operations on the buffer
> transmitted from upper layers.
>
> It seems that this address is above "high_memory" limit because
> it is allocated by vmalloc (in mtd_stresstest.c:285)...
Well, its telling you is that you're not allowed to DMA to vmalloc
addresses. Whether that's the fault of the map driver or not is a
question for mtd folk.
next prev parent reply other threads:[~2011-01-05 16:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-05 16:49 Hit BUG_ON in dma-mapping.c:425 Nicolas Ferre
2011-01-05 16:55 ` Russell King - ARM Linux [this message]
2011-01-06 10:38 ` Nicolas Ferre
2011-01-06 11:19 ` Artem Bityutskiy
2011-03-24 8:18 ` Hit BUG_ON in dma-mapping.c:425 (RFC) Nicolas Ferre
2011-03-24 8:25 ` Russell King - ARM Linux
2011-03-24 8:36 ` Artem Bityutskiy
2011-03-24 9:27 ` Russell King - ARM Linux
2011-03-24 9:41 ` Russell King - ARM Linux
2011-03-24 11:08 ` Artem Bityutskiy
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