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dma-buf: buffer should align to cacheline size

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Fixes: 0f4763b1c6 ("dma-buf: add DMA_BUF_IOCTL_SYNC_PARTIAL support")
Change-Id: Iff8b633cb89337bba3f7693a28657034a6aa2223
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2021-08-03 10:34:05 +08:00
committed by Tao Huang
parent e497827ad3
commit ea0a51bb9d
1 changed files with 4 additions and 0 deletions
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4
drivers/dma-buf/dma-buf.c
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@@ -39,6 +39,7 @@
#include <linux/hashtable.h>
#include <linux/list_sort.h>
#include <linux/mount.h>
#include <linux/cache.h>
#include <uapi/linux/dma-buf.h>
#include <uapi/linux/magic.h>
@@ -453,6 +454,9 @@ static long dma_buf_ioctl(struct file *file,
if (sync_p.len == 0)
return -EINVAL;
if ((sync_p.offset % cache_line_size()) || (sync_p.len % cache_line_size()))
return -EINVAL;
if (sync_p.len > dmabuf->size || sync_p.offset > dmabuf->size - sync_p.len)
return -EINVAL;