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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Kalle Valo <kvalo@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	netdev@vger.kernel.org, linux-hardening@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [PATCH 0/6][next] ath6kl: wmi: Replace one-element arrays with flexible-array members
Date: Tue, 22 Feb 2022 20:38:16 -0600	[thread overview]
Message-ID: <cover.1645583264.git.gustavoars@kernel.org> (raw)

This series aims to replace one-element arrays with flexible-array
members in multiple structures in drivers/net/wireless/ath/ath6kl/wmi.h

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().

These issues were 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/v5.16/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/79

Gustavo A. R. Silva (6):
  ath6kl: wmi: Replace one-element array with flexible-array member in
    struct wmi_begin_scan_cmd
  ath6kl: wmi: Replace one-element array with flexible-array member in
    struct wmi_start_scan_cmd
  ath6kl: wmi: Replace one-element array with flexible-array  member in
    struct wmi_channel_list_reply
  ath6kl: wmi: Replace one-element array with flexible-array  member in
    struct wmi_connect_event
  ath6kl: wmi: Replace one-element array with flexible-array  member in
    struct wmi_disconnect_event
  ath6kl: wmi: Replace one-element array with flexible-array  member in
    struct wmi_aplist_event

 drivers/net/wireless/ath/ath6kl/wmi.c | 30 +++++++--------------------
 drivers/net/wireless/ath/ath6kl/wmi.h | 12 +++++------
 2 files changed, 14 insertions(+), 28 deletions(-)

-- 
2.27.0


             reply	other threads:[~2022-02-23  2:33 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-23  2:38 Gustavo A. R. Silva [this message]
2022-02-23  2:38 ` [PATCH 1/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_begin_scan_cmd Gustavo A. R. Silva
2022-02-24  0:48   ` Jeff Johnson
2022-02-23  2:38 ` [PATCH 2/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_start_scan_cmd Gustavo A. R. Silva
2022-02-23  2:38 ` [PATCH 3/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_channel_list_reply Gustavo A. R. Silva
2022-02-24  0:49   ` Jeff Johnson
2022-02-23  2:38 ` [PATCH 4/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_connect_event Gustavo A. R. Silva
2022-02-24  0:50   ` Jeff Johnson
2022-02-24 20:08     ` Gustavo A. R. Silva
2022-02-23  2:39 ` [PATCH 5/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_disconnect_event Gustavo A. R. Silva
2022-02-24  0:53   ` Jeff Johnson
2022-02-23  2:39 ` [PATCH 6/6][next] ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_aplist_event Gustavo A. R. Silva
2022-02-24  1:01   ` Jeff Johnson

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