Messages in this thread Patch in this message | | | From | Al Viro <> | Subject | [PATCH 10/20] drivers/fpga/dfl-afu-dma-region.c: get rid of pointless access_ok() | Date | Sun, 10 May 2020 00:45:47 +0100 |
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From: Al Viro <viro@zeniv.linux.org.uk>
Address is passed to get_user_pages_fast(), which does access_ok(). NB: this is called only from ->ioctl(), and only under USER_DS.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- drivers/fpga/dfl-afu-dma-region.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/drivers/fpga/dfl-afu-dma-region.c b/drivers/fpga/dfl-afu-dma-region.c index 62f924489db5..d902acb36d14 100644 --- a/drivers/fpga/dfl-afu-dma-region.c +++ b/drivers/fpga/dfl-afu-dma-region.c @@ -324,10 +324,6 @@ int afu_dma_map_region(struct dfl_feature_platform_data *pdata, if (user_addr + length < user_addr) return -EINVAL; - if (!access_ok((void __user *)(unsigned long)user_addr, - length)) - return -EINVAL; - region = kzalloc(sizeof(*region), GFP_KERNEL); if (!region) return -ENOMEM; -- 2.11.0
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