From 090f2c5d3d077793da6a78db8d9535bc9a759857 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 9 Aug 2021 16:11:34 -0500 Subject: mwifiex: usb: Replace one-element array with flexible-array member MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. This helps with the ongoing efforts to globally enable -Warray-bounds and get us closer to being able to tighten the FORTIFY_SOURCE routines on memcpy(). This issue was found with the help of Coccinelle and audited and fixed, manually. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/109 Signed-off-by: Gustavo A. R. Silva Reviewed-by: Brian Norris Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210809211134.GA22488@embeddedor --- drivers/net/wireless/marvell/mwifiex/usb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/marvell') diff --git a/drivers/net/wireless/marvell/mwifiex/usb.h b/drivers/net/wireless/marvell/mwifiex/usb.h index d822ec15b7e6..61a96b7fbf21 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.h +++ b/drivers/net/wireless/marvell/mwifiex/usb.h @@ -134,7 +134,7 @@ struct fw_sync_header { struct fw_data { struct fw_header fw_hdr; __le32 seq_num; - u8 data[1]; + u8 data[]; } __packed; #endif /*_MWIFIEX_USB_H */ -- cgit