From 74d00a8c3849c1340efd713eb94b786e304c201f Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 25 Dec 2016 20:11:34 +0100 Subject: kernel: split patches folder up into backport, pending and hack folders * properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin --- ...use-skb_cow_head-to-deal-with-cloned-skbs.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 target/linux/generic/backport-4.9/023-5-lan78xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch (limited to 'target/linux/generic/backport-4.9/023-5-lan78xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch') diff --git a/target/linux/generic/backport-4.9/023-5-lan78xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch b/target/linux/generic/backport-4.9/023-5-lan78xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch new file mode 100644 index 0000000000..ea8279940b --- /dev/null +++ b/target/linux/generic/backport-4.9/023-5-lan78xx-use-skb_cow_head-to-deal-with-cloned-skbs.patch @@ -0,0 +1,38 @@ +From d4ca73591916b760478d2b04334d5dcadc028e9c Mon Sep 17 00:00:00 2001 +From: Eric Dumazet +Date: Wed, 19 Apr 2017 09:59:24 -0700 +Subject: [PATCH] lan78xx: use skb_cow_head() to deal with cloned skbs + +We need to ensure there is enough headroom to push extra header, +but we also need to check if we are allowed to change headers. + +skb_cow_head() is the proper helper to deal with this. + +Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") +Signed-off-by: Eric Dumazet +Cc: James Hughes +Cc: Woojung Huh +Signed-off-by: David S. Miller +--- + drivers/net/usb/lan78xx.c | 9 ++------- + 1 file changed, 2 insertions(+), 7 deletions(-) + +--- a/drivers/net/usb/lan78xx.c ++++ b/drivers/net/usb/lan78xx.c +@@ -2419,14 +2419,9 @@ static struct sk_buff *lan78xx_tx_prep(s + { + u32 tx_cmd_a, tx_cmd_b; + +- if (skb_headroom(skb) < TX_OVERHEAD) { +- struct sk_buff *skb2; +- +- skb2 = skb_copy_expand(skb, TX_OVERHEAD, 0, flags); ++ if (skb_cow_head(skb, TX_OVERHEAD)) { + dev_kfree_skb_any(skb); +- skb = skb2; +- if (!skb) +- return NULL; ++ return NULL; + } + + if (lan78xx_linearize(skb) < 0) -- cgit v1.2.3