kernel/lantiq: Create kernel files for v6.1 (from v5.15)

[openwrt/openwrt.git] / target / linux / lantiq / patches-6.1 / 0719-v6.0-net-lantiq_xrx200-restore-buffer-if-memory-allocatio.patch

diff --git a/target/linux/lantiq/patches-6.1/0719-v6.0-net-lantiq_xrx200-restore-buffer-if-memory-allocatio.patch b/target/linux/lantiq/patches-6.1/0719-v6.0-net-lantiq_xrx200-restore-buffer-if-memory-allocatio.patch
new file mode 100644 (file)
index 0000000..182da58
--- /dev/null
+++ b/target/linux/lantiq/patches-6.1/0719-v6.0-net-lantiq_xrx200-restore-buffer-if-memory-allocatio.patch
@@ -0,0 +1,27 @@
+From c9c3b1775f80fa21f5bff874027d2ccb10f5d90c Mon Sep 17 00:00:00 2001
+From: Aleksander Jan Bajkowski <olek2@wp.pl>
+Date: Wed, 24 Aug 2022 23:54:08 +0200
+Subject: [PATCH] net: lantiq_xrx200: restore buffer if memory allocation
+ failed
+
+In a situation where memory allocation fails, an invalid buffer address
+is stored. When this descriptor is used again, the system panics in the
+build_skb() function when accessing memory.
+
+Fixes: 7ea6cd16f159 ("lantiq: net: fix duplicated skb in rx descriptor ring")
+Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/ethernet/lantiq_xrx200.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/net/ethernet/lantiq_xrx200.c
++++ b/drivers/net/ethernet/lantiq_xrx200.c
+@@ -193,6 +193,7 @@ static int xrx200_alloc_buf(struct xrx20
+ 
+       ch->rx_buff[ch->dma.desc] = alloc(priv->rx_skb_size);
+       if (!ch->rx_buff[ch->dma.desc]) {
++              ch->rx_buff[ch->dma.desc] = buf;
+               ret = -ENOMEM;
+               goto skip;
+       }