diff mbox series

[v2,1/1] fpga: m10bmc-sec: Fix probe rollback

Message ID 20221214144952.8392-1-ilpo.jarvinen@linux.intel.com
State New
Headers
Series [v2,1/1] fpga: m10bmc-sec: Fix probe rollback |

Commit Message

Ilpo Järvinen Dec. 14, 2022, 2:49 p.m. UTC 
  Handle probe error rollbacks properly to avoid leaks.

Fixes: 5cd339b370e2 ("fpga: m10bmc-sec: add max10 secure update functions")
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Reviewed-by: Russ Weight <russell.h.weight@intel.com>
Reviewed-by: Marco Pagani <marpagan@redhat.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
I don't know if the previous one fell through cracks so resending this.

v2:
- Resending v1 with Marco's Rev-by

 drivers/fpga/intel-m10-bmc-sec-update.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

Comments

Xu Yilun Dec. 16, 2022, 8:26 a.m. UTC | #1 
On 2022-12-14 at 16:49:52 +0200, Ilpo Järvinen wrote:
> Handle probe error rollbacks properly to avoid leaks.
> 
> Fixes: 5cd339b370e2 ("fpga: m10bmc-sec: add max10 secure update functions")
> Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> Reviewed-by: Russ Weight <russell.h.weight@intel.com>
> Reviewed-by: Marco Pagani <marpagan@redhat.com>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> ---
> I don't know if the previous one fell through cracks so resending this.

I'll pick this when v6.2-rc1 comes.

Acked-by: Xu Yilun <yilun.xu@intel.com>

> 
> v2:
> - Resending v1 with Marco's Rev-by
> 
>  drivers/fpga/intel-m10-bmc-sec-update.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c
> index 79d48852825e..03f1bd81c434 100644
> --- a/drivers/fpga/intel-m10-bmc-sec-update.c
> +++ b/drivers/fpga/intel-m10-bmc-sec-update.c
> @@ -574,20 +574,27 @@ static int m10bmc_sec_probe(struct platform_device *pdev)
>  	len = scnprintf(buf, SEC_UPDATE_LEN_MAX, "secure-update%d",
>  			sec->fw_name_id);
>  	sec->fw_name = kmemdup_nul(buf, len, GFP_KERNEL);
> -	if (!sec->fw_name)
> -		return -ENOMEM;
> +	if (!sec->fw_name) {
> +		ret = -ENOMEM;
> +		goto fw_name_fail;
> +	}
>  
>  	fwl = firmware_upload_register(THIS_MODULE, sec->dev, sec->fw_name,
>  				       &m10bmc_ops, sec);
>  	if (IS_ERR(fwl)) {
>  		dev_err(sec->dev, "Firmware Upload driver failed to start\n");
> -		kfree(sec->fw_name);
> -		xa_erase(&fw_upload_xa, sec->fw_name_id);
> -		return PTR_ERR(fwl);
> +		ret = PTR_ERR(fwl);
> +		goto fw_uploader_fail;
>  	}
>  
>  	sec->fwl = fwl;
>  	return 0;
> +
> +fw_uploader_fail:
> +	kfree(sec->fw_name);
> +fw_name_fail:
> +	xa_erase(&fw_upload_xa, sec->fw_name_id);
> +	return ret;
>  }
>  
>  static int m10bmc_sec_remove(struct platform_device *pdev)
> -- 
> 2.30.2
>
Xu Yilun Dec. 26, 2022, 3:48 a.m. UTC | #2 
On 2022-12-14 at 16:49:52 +0200, Ilpo Järvinen wrote:
> Handle probe error rollbacks properly to avoid leaks.
> 
> Fixes: 5cd339b370e2 ("fpga: m10bmc-sec: add max10 secure update functions")
> Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> Reviewed-by: Russ Weight <russell.h.weight@intel.com>
> Reviewed-by: Marco Pagani <marpagan@redhat.com>
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

I assume this should be in stable kernel, so
 
 Cc: stable@vger.kernel.org

If OK, I could add it myself.

Thanks,
Yilun

> ---
> I don't know if the previous one fell through cracks so resending this.
> 
> v2:
> - Resending v1 with Marco's Rev-by
> 
>  drivers/fpga/intel-m10-bmc-sec-update.c | 17 ++++++++++++-----
>  1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c
> index 79d48852825e..03f1bd81c434 100644
> --- a/drivers/fpga/intel-m10-bmc-sec-update.c
> +++ b/drivers/fpga/intel-m10-bmc-sec-update.c
> @@ -574,20 +574,27 @@ static int m10bmc_sec_probe(struct platform_device *pdev)
>  	len = scnprintf(buf, SEC_UPDATE_LEN_MAX, "secure-update%d",
>  			sec->fw_name_id);
>  	sec->fw_name = kmemdup_nul(buf, len, GFP_KERNEL);
> -	if (!sec->fw_name)
> -		return -ENOMEM;
> +	if (!sec->fw_name) {
> +		ret = -ENOMEM;
> +		goto fw_name_fail;
> +	}
>  
>  	fwl = firmware_upload_register(THIS_MODULE, sec->dev, sec->fw_name,
>  				       &m10bmc_ops, sec);
>  	if (IS_ERR(fwl)) {
>  		dev_err(sec->dev, "Firmware Upload driver failed to start\n");
> -		kfree(sec->fw_name);
> -		xa_erase(&fw_upload_xa, sec->fw_name_id);
> -		return PTR_ERR(fwl);
> +		ret = PTR_ERR(fwl);
> +		goto fw_uploader_fail;
>  	}
>  
>  	sec->fwl = fwl;
>  	return 0;
> +
> +fw_uploader_fail:
> +	kfree(sec->fw_name);
> +fw_name_fail:
> +	xa_erase(&fw_upload_xa, sec->fw_name_id);
> +	return ret;
>  }
>  
>  static int m10bmc_sec_remove(struct platform_device *pdev)
> -- 
> 2.30.2
>
Ilpo Järvinen Dec. 26, 2022, 5:57 p.m. UTC | #3 
On Mon, 26 Dec 2022, Xu Yilun wrote:

> On 2022-12-14 at 16:49:52 +0200, Ilpo Järvinen wrote:
> > Handle probe error rollbacks properly to avoid leaks.
> > 
> > Fixes: 5cd339b370e2 ("fpga: m10bmc-sec: add max10 secure update functions")
> > Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> > Reviewed-by: Russ Weight <russell.h.weight@intel.com>
> > Reviewed-by: Marco Pagani <marpagan@redhat.com>
> > Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> 
> I assume this should be in stable kernel, so
>  
>  Cc: stable@vger.kernel.org
> 
> If OK, I could add it myself.

Yes, it should have been there but I forgot it.

Please add it like you suggested. Thanks.
diff mbox series

Patch

diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c
index 79d48852825e..03f1bd81c434 100644
--- a/drivers/fpga/intel-m10-bmc-sec-update.c
+++ b/drivers/fpga/intel-m10-bmc-sec-update.c
@@ -574,20 +574,27 @@  static int m10bmc_sec_probe(struct platform_device *pdev)
 	len = scnprintf(buf, SEC_UPDATE_LEN_MAX, "secure-update%d",
 			sec->fw_name_id);
 	sec->fw_name = kmemdup_nul(buf, len, GFP_KERNEL);
-	if (!sec->fw_name)
-		return -ENOMEM;
+	if (!sec->fw_name) {
+		ret = -ENOMEM;
+		goto fw_name_fail;
+	}
 
 	fwl = firmware_upload_register(THIS_MODULE, sec->dev, sec->fw_name,
 				       &m10bmc_ops, sec);
 	if (IS_ERR(fwl)) {
 		dev_err(sec->dev, "Firmware Upload driver failed to start\n");
-		kfree(sec->fw_name);
-		xa_erase(&fw_upload_xa, sec->fw_name_id);
-		return PTR_ERR(fwl);
+		ret = PTR_ERR(fwl);
+		goto fw_uploader_fail;
 	}
 
 	sec->fwl = fwl;
 	return 0;
+
+fw_uploader_fail:
+	kfree(sec->fw_name);
+fw_name_fail:
+	xa_erase(&fw_upload_xa, sec->fw_name_id);
+	return ret;
 }
 
 static int m10bmc_sec_remove(struct platform_device *pdev)