Re: [PATCH net] tun: Add missing bpf_net_ctx_clear() in do_xdp_generic()

[Jeongjun Park]

On Fri, 26 Jul 2024 06:40:49 +0900 Jeongjun Park wrote:
> There are cases where do_xdp_generic returns bpf_net_context without
> clearing it. This causes various memory corruptions, so the missing
> bpf_net_ctx_clear must be added.
>
> Reported-by: syzbot+44623300f057a28baf1e@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: fecef4cd42c6 ("tun: Assign missing bpf_net_context.")
> Signed-off-by: Jeongjun Park <aha310510@xxxxxxxxx>

Reported-by: syzbot+c226757eb784a9da3e8b@xxxxxxxxxxxxxxxxxxxxxxxxx
Reported-by: syzbot+61a1cfc2b6632363d319@xxxxxxxxxxxxxxxxxxxxxxxxx
Reported-by: syzbot+709e4c85c904bcd62735@xxxxxxxxxxxxxxxxxxxxxxxxx

After searching, I found reports with the same root cause, so I added
them.