From: Colin Ian King <colin.king@canonical.com> mainline inclusion from mainline-v5.2-rc3 commit 65b1dc99008de592f7c1c8e5fad446824791b4da category: bugfix bugzilla: NA CVE: NA ------------------------------------------------- Currently the qedf_dbg_* family of functions can overrun the end of the source string if it is less than the destination buffer length because of the use of a fixed sized memcpy. Remove the memset/memcpy calls to nfunc and just use func instead as it is always a null terminated string. Addresses-Coverity: ("Out-of-bounds access") Fixes: 61d8658b4a43 ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Hou Tao <houtao1@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/scsi/qedf/qedf_dbg.c | 32 ++++++++------------------------ 1 file changed, 8 insertions(+), 24 deletions(-) diff --git a/drivers/scsi/qedf/qedf_dbg.c b/drivers/scsi/qedf/qedf_dbg.c index f2397ee9ba69..f7d170bffc82 100644 --- a/drivers/scsi/qedf/qedf_dbg.c +++ b/drivers/scsi/qedf/qedf_dbg.c @@ -15,10 +15,6 @@ qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line, { va_list va; struct va_format vaf; - char nfunc[32]; - - memset(nfunc, 0, sizeof(nfunc)); - memcpy(nfunc, func, sizeof(nfunc) - 1); va_start(va, fmt); @@ -27,9 +23,9 @@ qedf_dbg_err(struct qedf_dbg_ctx *qedf, const char *func, u32 line, if (likely(qedf) && likely(qedf->pdev)) pr_err("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)), - nfunc, line, qedf->host_no, &vaf); + func, line, qedf->host_no, &vaf); else - pr_err("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf); + pr_err("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf); va_end(va); } @@ -40,10 +36,6 @@ qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line, { va_list va; struct va_format vaf; - char nfunc[32]; - - memset(nfunc, 0, sizeof(nfunc)); - memcpy(nfunc, func, sizeof(nfunc) - 1); va_start(va, fmt); @@ -55,9 +47,9 @@ qedf_dbg_warn(struct qedf_dbg_ctx *qedf, const char *func, u32 line, if (likely(qedf) && likely(qedf->pdev)) pr_warn("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)), - nfunc, line, qedf->host_no, &vaf); + func, line, qedf->host_no, &vaf); else - pr_warn("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf); + pr_warn("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf); ret: va_end(va); @@ -69,10 +61,6 @@ qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func, u32 line, { va_list va; struct va_format vaf; - char nfunc[32]; - - memset(nfunc, 0, sizeof(nfunc)); - memcpy(nfunc, func, sizeof(nfunc) - 1); va_start(va, fmt); @@ -84,10 +72,10 @@ qedf_dbg_notice(struct qedf_dbg_ctx *qedf, const char *func, u32 line, if (likely(qedf) && likely(qedf->pdev)) pr_notice("[%s]:[%s:%d]:%d: %pV", - dev_name(&(qedf->pdev->dev)), nfunc, line, + dev_name(&(qedf->pdev->dev)), func, line, qedf->host_no, &vaf); else - pr_notice("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf); + pr_notice("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf); ret: va_end(va); @@ -99,10 +87,6 @@ qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line, { va_list va; struct va_format vaf; - char nfunc[32]; - - memset(nfunc, 0, sizeof(nfunc)); - memcpy(nfunc, func, sizeof(nfunc) - 1); va_start(va, fmt); @@ -114,9 +98,9 @@ qedf_dbg_info(struct qedf_dbg_ctx *qedf, const char *func, u32 line, if (likely(qedf) && likely(qedf->pdev)) pr_info("[%s]:[%s:%d]:%d: %pV", dev_name(&(qedf->pdev->dev)), - nfunc, line, qedf->host_no, &vaf); + func, line, qedf->host_no, &vaf); else - pr_info("[0000:00:00.0]:[%s:%d]: %pV", nfunc, line, &vaf); + pr_info("[0000:00:00.0]:[%s:%d]: %pV", func, line, &vaf); ret: va_end(va); -- 2.25.1