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| author | Eric Dumazet <edumazet@google.com> | 2024-05-06 16:55:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-30 10:49:23 +0300 |
| commit | cddd906c3cbf443c182fc5c0c86bebfd22ec471a (patch) | |
| tree | ed297637cee226a414e241622c651f83c4c908c3 /drivers/net | |
| parent | 673b92ef42100a13e2465fdf061afe15c31d08de (diff) | |
| download | linux-cddd906c3cbf443c182fc5c0c86bebfd22ec471a.tar.xz | |
usb: aqc111: stop lying about skb->truesize
[ Upstream commit 9aad6e45c4e7d16b2bb7c3794154b828fb4384b4 ]
Some usb drivers try to set small skb->truesize and break
core networking stacks.
I replace one skb_clone() by an allocation of a fresh
and small skb, to get minimally sized skbs, like we did
in commit 1e2c61172342 ("net: cdc_ncm: reduce skb truesize
in rx path") and 4ce62d5b2f7a ("net: usb: ax88179_178a:
stop lying about skb->truesize")
Fixes: 361459cd9642 ("net: usb: aqc111: Implement RX data path")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240506135546.3641185-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/usb/aqc111.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/net/usb/aqc111.c b/drivers/net/usb/aqc111.c index 7b8afa589a53..284375f662f1 100644 --- a/drivers/net/usb/aqc111.c +++ b/drivers/net/usb/aqc111.c @@ -1141,17 +1141,15 @@ static int aqc111_rx_fixup(struct usbnet *dev, struct sk_buff *skb) continue; } - /* Clone SKB */ - new_skb = skb_clone(skb, GFP_ATOMIC); + new_skb = netdev_alloc_skb_ip_align(dev->net, pkt_len); if (!new_skb) goto err; - new_skb->len = pkt_len; + skb_put(new_skb, pkt_len); + memcpy(new_skb->data, skb->data, pkt_len); skb_pull(new_skb, AQ_RX_HW_PAD); - skb_set_tail_pointer(new_skb, new_skb->len); - new_skb->truesize = SKB_TRUESIZE(new_skb->len); if (aqc111_data->rx_checksum) aqc111_rx_checksum(new_skb, pkt_desc); |