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scsi: qla2xxx: Replace all non-returning strlcpy() with strscpy() 

[ Upstream commit 37f1663c91 ]

strlcpy() reads the entire source buffer first.  This read may exceed the
destination size limit.  This is both inefficient and can lead to linear
read overflows if a source string is not NUL-terminated [1].  In an effort
to remove strlcpy() completely [2], replace strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Link: https://lore.kernel.org/r/20230516025404.2843867-1-azeemshaikh38@gmail.com
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: c3408c4ae0 ("scsi: qla2xxx: Avoid possible run-time warning with long model_num")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Azeem Shaikh 2023-05-16 02:54:04 +00:00 committed by Greg Kroah-Hartman
parent ecf4ddc3ae
commit b648756eb9
2 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/qla2xxx/qla_init.c
View File

@ -4479,7 +4479,7 @@ qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len,
if (use_tbl &&
ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
index < QLA_MODEL_NAMES)
strlcpy(ha->model_desc,
strscpy(ha->model_desc,
qla2x00_model_name[index * 2 + 1],
sizeof(ha->model_desc));
} else {
@ -4487,14 +4487,14 @@ qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len,
if (use_tbl &&
ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
index < QLA_MODEL_NAMES) {
strlcpy(ha->model_number,
strscpy(ha->model_number,
qla2x00_model_name[index * 2],
sizeof(ha->model_number));
strlcpy(ha->model_desc,
strscpy(ha->model_desc,
qla2x00_model_name[index * 2 + 1],
sizeof(ha->model_desc));
} else {
strlcpy(ha->model_number, def,
strscpy(ha->model_number, def,
sizeof(ha->model_number));
}
}

20
drivers/scsi/qla2xxx/qla_mr.c
View File

@ -693,7 +693,7 @@ qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len)
struct qla_hw_data *ha = vha->hw;
if (pci_is_pcie(ha->pdev))
strlcpy(str, "PCIe iSA", str_len);
strscpy(str, "PCIe iSA", str_len);
return str;
}
@ -1854,21 +1854,21 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type)
phost_info = &preg_hsi->hsi;
memset(preg_hsi, 0, sizeof(struct register_host_info));
phost_info->os_type = OS_TYPE_LINUX;
strlcpy(phost_info->sysname, p_sysid->sysname,
strscpy(phost_info->sysname, p_sysid->sysname,
sizeof(phost_info->sysname));
strlcpy(phost_info->nodename, p_sysid->nodename,
strscpy(phost_info->nodename, p_sysid->nodename,
sizeof(phost_info->nodename));
if (!strcmp(phost_info->nodename, "(none)"))
ha->mr.host_info_resend = true;
strlcpy(phost_info->release, p_sysid->release,
strscpy(phost_info->release, p_sysid->release,
sizeof(phost_info->release));
strlcpy(phost_info->version, p_sysid->version,
strscpy(phost_info->version, p_sysid->version,
sizeof(phost_info->version));
strlcpy(phost_info->machine, p_sysid->machine,
strscpy(phost_info->machine, p_sysid->machine,
sizeof(phost_info->machine));
strlcpy(phost_info->domainname, p_sysid->domainname,
strscpy(phost_info->domainname, p_sysid->domainname,
sizeof(phost_info->domainname));
strlcpy(phost_info->hostdriver, QLA2XXX_VERSION,
strscpy(phost_info->hostdriver, QLA2XXX_VERSION,
sizeof(phost_info->hostdriver));
preg_hsi->utc = (uint64_t)ktime_get_real_seconds();
ql_dbg(ql_dbg_init, vha, 0x0149,
@ -1914,9 +1914,9 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type)
if (fx_type == FXDISC_GET_CONFIG_INFO) {
struct config_info_data *pinfo =
(struct config_info_data *) fdisc->u.fxiocb.rsp_addr;
strlcpy(vha->hw->model_number, pinfo->model_num,
strscpy(vha->hw->model_number, pinfo->model_num,
ARRAY_SIZE(vha->hw->model_number));
strlcpy(vha->hw->model_desc, pinfo->model_description,
strscpy(vha->hw->model_desc, pinfo->model_description,
ARRAY_SIZE(vha->hw->model_desc));
memcpy(&vha->hw->mr.symbolic_name, pinfo->symbolic_name,
sizeof(vha->hw->mr.symbolic_name));