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(2001-b011-7803-1df1-b14e-6890-de2e-81d0.dynamic-ip6.hinet.net. [2001:b011:7803:1df1:b14e:6890:de2e:81d0]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82a6bbe1ffbsm8599692b3a.43.2026.03.19.10.03.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Mar 2026 10:03:21 -0700 (PDT) From: Lin YuChen To: gregkh@linuxfoundation.org, dan.carpenter@linaro.org Cc: starpt.official@gmail.com, straube.linux@gmail.com, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH] staging: rtl8723bs: initialize le_tmp64 in rtw_BIP_verify() Date: Fri, 20 Mar 2026 01:03:12 +0800 Message-Id: <20260319170312.71408-1-starpt.official@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Initialize le_tmp64 to zero in rtw_BIP_verify() to prevent using uninitialized data. Smatch warns that only 6 bytes are copied to this 8-byte (u64) variable, leaving the last two bytes uninitialized: drivers/staging/rtl8723bs/core/rtw_security.c:1308 rtw_BIP_verify() warn: not copying enough bytes for '&le_tmp64' (8 vs 6 bytes) Initializing the variable at the start of the function fixes this warning and ensures predictable behavior. Reported-by: Dan Carpenter Closes: https://lore.kernel.org/linux-staging/abvwIQh0CHTp4wNJ@stanley.moun= tain/ Signed-off-by: Lin YuChen --- drivers/staging/rtl8723bs/core/rtw_security.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/stagin= g/rtl8723bs/core/rtw_security.c index b489babe7432..c3f5fc4abd17 100644 --- a/drivers/staging/rtl8723bs/core/rtw_security.c +++ b/drivers/staging/rtl8723bs/core/rtw_security.c @@ -1291,7 +1291,7 @@ u32 rtw_BIP_verify(struct adapter *padapter, u8 *prec= vframe) u8 mic[16]; struct mlme_ext_priv *pmlmeext =3D &padapter->mlmeextpriv; __le16 le_tmp; - __le64 le_tmp64; + __le64 le_tmp64 =3D 0; =20 ori_len =3D pattrib->pkt_len - WLAN_HDR_A3_LEN + BIP_AAD_SIZE; BIP_AAD =3D kzalloc(ori_len, GFP_KERNEL); --=20 2.34.1