From: Niklas Cassel Date: Wed, 29 Aug 2018 07:57:21 +0000 (+0200) Subject: soc: qcom: wcnss_ctrl: Avoid string overflow X-Git-Tag: v4.20-rc1~64^2~7^2^2~20 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c96ed170d658d8826d94edec8ac93ee777981a2;p=thirdparty%2Fkernel%2Flinux.git soc: qcom: wcnss_ctrl: Avoid string overflow 'chinfo.name' is used as a NUL-terminated string, but using strncpy() with the length equal to the buffer size may result in lack of the termination: drivers//soc/qcom/wcnss_ctrl.c: In function 'qcom_wcnss_open_channel': drivers//soc/qcom/wcnss_ctrl.c:284:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(chinfo.name, name, sizeof(chinfo.name)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This changes it to use the safer strscpy() instead. Signed-off-by: Niklas Cassel Reviewed-by: Bjorn Andersson Signed-off-by: Andy Gross --- diff --git a/drivers/soc/qcom/wcnss_ctrl.c b/drivers/soc/qcom/wcnss_ctrl.c index df3ccb30bc2dd..373400dd816d6 100644 --- a/drivers/soc/qcom/wcnss_ctrl.c +++ b/drivers/soc/qcom/wcnss_ctrl.c @@ -281,7 +281,7 @@ struct rpmsg_endpoint *qcom_wcnss_open_channel(void *wcnss, const char *name, rp struct rpmsg_channel_info chinfo; struct wcnss_ctrl *_wcnss = wcnss; - strncpy(chinfo.name, name, sizeof(chinfo.name)); + strscpy(chinfo.name, name, sizeof(chinfo.name)); chinfo.src = RPMSG_ADDR_ANY; chinfo.dst = RPMSG_ADDR_ANY;