From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/net/usb/cdc_ncm.c | 24 +++++++++++++++---------
1 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/kernel/drivers/net/usb/cdc_ncm.c b/kernel/drivers/net/usb/cdc_ncm.c
index 913d913..7345564 100644
--- a/kernel/drivers/net/usb/cdc_ncm.c
+++ b/kernel/drivers/net/usb/cdc_ncm.c
@@ -180,9 +180,12 @@
else
min = ctx->max_datagram_size + ctx->max_ndp_size + sizeof(struct usb_cdc_ncm_nth32);
- max = min_t(u32, CDC_NCM_NTB_MAX_SIZE_TX, le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize));
- if (max == 0)
+ if (le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) == 0)
max = CDC_NCM_NTB_MAX_SIZE_TX; /* dwNtbOutMaxSize not set */
+ else
+ max = clamp_t(u32, le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize),
+ USB_CDC_NCM_NTB_MIN_OUT_SIZE,
+ CDC_NCM_NTB_MAX_SIZE_TX);
/* some devices set dwNtbOutMaxSize too low for the above default */
min = min(min, max);
@@ -1230,6 +1233,9 @@
* further.
*/
if (skb_out == NULL) {
+ /* If even the smallest allocation fails, abort. */
+ if (ctx->tx_curr_size == USB_CDC_NCM_NTB_MIN_OUT_SIZE)
+ goto alloc_failed;
ctx->tx_low_mem_max_cnt = min(ctx->tx_low_mem_max_cnt + 1,
(unsigned)CDC_NCM_LOW_MEM_MAX_CNT);
ctx->tx_low_mem_val = ctx->tx_low_mem_max_cnt;
@@ -1248,13 +1254,8 @@
skb_out = alloc_skb(ctx->tx_curr_size, GFP_ATOMIC);
/* No allocation possible so we will abort */
- if (skb_out == NULL) {
- if (skb != NULL) {
- dev_kfree_skb_any(skb);
- dev->net->stats.tx_dropped++;
- }
- goto exit_no_skb;
- }
+ if (!skb_out)
+ goto alloc_failed;
ctx->tx_low_mem_val--;
}
if (ctx->is_ndp16) {
@@ -1447,6 +1448,11 @@
return skb_out;
+alloc_failed:
+ if (skb) {
+ dev_kfree_skb_any(skb);
+ dev->net->stats.tx_dropped++;
+ }
exit_no_skb:
/* Start timer, if there is a remaining non-empty skb */
if (ctx->tx_curr_skb != NULL && n > 0)
--
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