Merge tag 'i2c-host-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow

This release includes significant updates, with the primary
change being the renaming from "master/slave" to
"controller/target" to adhere to I2C v7 and SMBus 3.2 standards.

New Support:

 - Added support for Intel Arrow Lake-H.
 - Added I2C support in the Arioha SoC by linking the Mediatek
   I2C controller.

Cleanups:

 - Added the MODULE_DESCRIPTION() macro, resolving a modpost
   warning in the ALi 1563 Southbridge driver.
 - Constified the regmap_config declaration in the i2c-designware
   driver.
 - Improved the coding style in the Renesas R-Car driver by
   removing unnecessary semicolons after brackets.

General improvements:

 - In the OMAP device, replaced NOIRQ_SYSTEM_SLEEP_PM_OPS with
   RUNTIME_PM_OPS to enable waking up the controller during
   suspend() before suspend_noirq() kicks in.
 - Improved logging in the Xilinx driver.
 - Added a warning (WARN()) in the Renesas R-Car driver for
   spurious interrupts.

DTS Changes:

 - Removed address-cell and size-cell from the Atmel at91sam,
   nVidia Tegra 20, and Samsung S3c2410 devices.
 - Fixed Texas Instruments OMAP4 I2C controller to comply with
   the i2c-controller.yaml schema.
 - Improved indentation in DTS examples for several I2C devices.
 - Converted the NXP LPC1788 binding to the dt-schema.
 - Added documentation for the compatible string
   thead,th1520-i2c.
 - Added the "power-domains" property for the Meson I2C driver.

1 files changed, 31 insertions, 6 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 5e695a9a609c..142f56770b77 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2613,10 +2613,24 @@ static struct sk_buff *manage_oob(struct sk_buff *skb, struct sock *sk,
 {
 	struct unix_sock *u = unix_sk(sk);
 
-	if (!unix_skb_len(skb) && !(flags & MSG_PEEK)) {
-		skb_unlink(skb, &sk->sk_receive_queue);
-		consume_skb(skb);
-		skb = NULL;
+	if (!unix_skb_len(skb)) {
+		struct sk_buff *unlinked_skb = NULL;
+
+		spin_lock(&sk->sk_receive_queue.lock);
+
+		if (copied && (!u->oob_skb || skb == u->oob_skb)) {
+			skb = NULL;
+		} else if (flags & MSG_PEEK) {
+			skb = skb_peek_next(skb, &sk->sk_receive_queue);
+		} else {
+			unlinked_skb = skb;
+			skb = skb_peek_next(skb, &sk->sk_receive_queue);
+			__skb_unlink(unlinked_skb, &sk->sk_receive_queue);
+		}
+
+		spin_unlock(&sk->sk_receive_queue.lock);
+
+		consume_skb(unlinked_skb);
 	} else {
 		struct sk_buff *unlinked_skb = NULL;
 
@@ -3093,12 +3107,23 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 #if IS_ENABLED(CONFIG_AF_UNIX_OOB)
 	case SIOCATMARK:
 		{
+			struct unix_sock *u = unix_sk(sk);
 			struct sk_buff *skb;
 			int answ = 0;
 
+			mutex_lock(&u->iolock);
+
 			skb = skb_peek(&sk->sk_receive_queue);
-			if (skb && skb == READ_ONCE(unix_sk(sk)->oob_skb))
-				answ = 1;
+			if (skb) {
+				struct sk_buff *oob_skb = READ_ONCE(u->oob_skb);
+
+				if (skb == oob_skb ||
+				    (!oob_skb && !unix_skb_len(skb)))
+					answ = 1;
+			}
+
+			mutex_unlock(&u->iolock);
+
 			err = put_user(answ, (int __user *)arg);
 		}
 		break;