linux-kernel - [PATCH][next] staging: rtl8723bs: Replace zero-length array with flexible-array member

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20210929194118.GA340431@embeddedor>
Date:   Wed, 29 Sep 2021 14:41:18 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH][next] staging: rtl8723bs: Replace zero-length array with
 flexible-array member

One-element and zero-length arrays are deprecated and should be
replaced with flexible-array members[1].

Replace zero-length array with flexible-array member and make use
of the struct_size() helper.

[1] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/78
Link: https://github.com/KSPP/linux/issues/160
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/staging/rtl8723bs/include/osdep_service.h | 2 +-
 drivers/staging/rtl8723bs/os_dep/osdep_service.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8723bs/include/osdep_service.h b/drivers/staging/rtl8723bs/include/osdep_service.h
index bde415db4114..cf96b5f7a776 100644
--- a/drivers/staging/rtl8723bs/include/osdep_service.h
+++ b/drivers/staging/rtl8723bs/include/osdep_service.h
@@ -113,7 +113,7 @@ struct rtw_cbuf {
 	u32 write;
 	u32 read;
 	u32 size;
-	void *bufs[0];
+	void *bufs[];
 };
 
 bool rtw_cbuf_full(struct rtw_cbuf *cbuf);
diff --git a/drivers/staging/rtl8723bs/os_dep/osdep_service.c b/drivers/staging/rtl8723bs/os_dep/osdep_service.c
index 2d630ecef08b..d6bddf7b08e8 100644
--- a/drivers/staging/rtl8723bs/os_dep/osdep_service.c
+++ b/drivers/staging/rtl8723bs/os_dep/osdep_service.c
@@ -274,7 +274,7 @@ struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
 {
 	struct rtw_cbuf *cbuf;
 
-	cbuf = rtw_malloc(sizeof(*cbuf) + sizeof(void *) * size);
+	cbuf = rtw_malloc(struct_size(cbuf, bufs, size));
 
 	if (cbuf) {
 		cbuf->write = cbuf->read = 0;
-- 
2.27.0