* [PATCH] soc/qcom: use struct_size over open coded arithmetic
@ 2022-02-16 3:07 cgel.zte
0 siblings, 0 replies; 2+ messages in thread
From: cgel.zte @ 2022-02-16 3:07 UTC (permalink / raw)
To: agross
Cc: bjorn.andersson, linux-arm-msm, linux-kernel,
Minghao Chi (CGEL ZTE),
Zeal Robot
From: "Minghao Chi (CGEL ZTE)" <chi.minghao@zte.com.cn>
Replace zero-length array with flexible-array member and make use
of the struct_size() helper in kzalloc(). For example:
struct apr_rx_buf {
struct list_head node;
int len;
uint8_t buf[];
};
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
---
drivers/soc/qcom/apr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c
index 82ca12c9328a..0813dbc5e462 100644
--- a/drivers/soc/qcom/apr.c
+++ b/drivers/soc/qcom/apr.c
@@ -171,7 +171,7 @@ static int apr_callback(struct rpmsg_device *rpdev, void *buf,
return -EINVAL;
}
- abuf = kzalloc(sizeof(*abuf) + len, GFP_ATOMIC);
+ abuf = kzalloc((struct_size(abuf, buf, len), GFP_ATOMIC);
if (!abuf)
return -ENOMEM;
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] soc/qcom: use struct_size over open coded arithmetic
@ 2022-02-16 15:41 Nathan Chancellor
0 siblings, 0 replies; 2+ messages in thread
From: Nathan Chancellor @ 2022-02-16 15:41 UTC (permalink / raw)
To: cgel.zte
Cc: agross, bjorn.andersson, linux-arm-msm, linux-kernel, chi.minghao
Hi,
I am forwarding along this build report from the kernel test robot due
to a bug in their system. As I am sure you will figure out soon enough,
this patch was not even build tested.
Cheers,
Nathan
^ permalink raw reply [flat|nested] 2+ messages in thread
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