Signed-off-by: Jan Luebbe <j...@pengutronix.de>
---
I'm not sure why we don't check for high memory, is there any problem
with this approach?
lib/dma-debug.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 66ce414..7d60ff0 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -944,6 +944,9 @@ static void check_for_illegal_area(struct device *dev, void
*addr, unsigned long
if (overlap(addr, len, _text, _etext) ||
overlap(addr, len, __start_rodata, __end_rodata))
err_printk(dev, NULL, "DMA-API: device driver maps memory from
kernel text or rodata [addr=%p] [len=%lu]\n", addr, len);
+ if (is_vmalloc_or_module_addr(addr) ||
+ is_vmalloc_or_module_addr(addr+len))
+ err_printk(dev, NULL, "DMA-API: device driver maps memory from
vmalloc or module address range [addr=%p] [len=%lu]\n", addr, len);
}
static void check_sync(struct device *dev,
--
1.7.10.4
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