Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-01-09 (ice)

This series contains updates to ice driver only.

Jiasheng Jiang frees allocated cmd_buf if write_buf allocation failed to
prevent memory leak.

Yuan Can adds check, and proper cleanup, of gnss_tty_port allocation call
to avoid memory leaks.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: Add check for kzalloc
  ice: Fix potential memory leak in ice_gnss_tty_write()
====================

Link: https://lore.kernel.org/r/20230109225358.3478060-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/intel/ice/ice_gnss.c

@@ -363,6 +363,7 @@ ice_gnss_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
 	/* Send the data out to a hardware port */
 	write_buf = kzalloc(sizeof(*write_buf), GFP_KERNEL);
 	if (!write_buf) {
+		kfree(cmd_buf);
 		err = -ENOMEM;
 		goto exit;
 	}
@@ -460,6 +461,9 @@ static struct tty_driver *ice_gnss_create_tty_driver(struct ice_pf *pf)
 	for (i = 0; i < ICE_GNSS_TTY_MINOR_DEVICES; i++) {
 		pf->gnss_tty_port[i] = kzalloc(sizeof(*pf->gnss_tty_port[i]),
 					       GFP_KERNEL);
+		if (!pf->gnss_tty_port[i])
+			goto err_out;
+
 		pf->gnss_serial[i] = NULL;
 
 		tty_port_init(pf->gnss_tty_port[i]);
@@ -469,21 +473,23 @@ static struct tty_driver *ice_gnss_create_tty_driver(struct ice_pf *pf)
 	err = tty_register_driver(tty_driver);
 	if (err) {
 		dev_err(dev, "Failed to register TTY driver err=%d\n", err);
-
-		for (i = 0; i < ICE_GNSS_TTY_MINOR_DEVICES; i++) {
-			tty_port_destroy(pf->gnss_tty_port[i]);
-			kfree(pf->gnss_tty_port[i]);
-		}
-		kfree(ttydrv_name);
-		tty_driver_kref_put(pf->ice_gnss_tty_driver);
-
-		return NULL;
+		goto err_out;
 	}
 
 	for (i = 0; i < ICE_GNSS_TTY_MINOR_DEVICES; i++)
 		dev_info(dev, "%s%d registered\n", ttydrv_name, i);
 
 	return tty_driver;
+
+err_out:
+	while (i--) {
+		tty_port_destroy(pf->gnss_tty_port[i]);
+		kfree(pf->gnss_tty_port[i]);
+	}
+	kfree(ttydrv_name);
+	tty_driver_kref_put(pf->ice_gnss_tty_driver);
+
+	return NULL;
 }
 
 /**