Re: [PATCH v2] ethernet:enic: Fix a use after free bug in enic_hard_start_xmit

On Sun, 2021-05-02 at 04:58 -0700, Lv Yunlong wrote:

In enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside
enic_queue_wq_skb, if some error happens, the skb will be freed
by dev_kfree_skb(skb). But the freed skb is still used in
skb_tx_timestamp(skb).

My patch makes enic_queue_wq_skb() return error and goto spin_unlock()
incase of error. The solution is provided by Govind.
See https://lkml.org/lkml/2021/4/30/961.

Fixes: fb7516d42478e ("enic: add sw timestamp support")
Signed-off-by: Lv Yunlong <redacted>

Thanks,

Acked-by: Govindarajulu Varadarajan <redacted>