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Commit 010f245b authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
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tun: relax check on eth_get_headlen() return value



syzkaller hit the WARN() in tun_get_user(), providing skb
with payload in fragments only, and nothing in skb->head

GRO layer is fine with this, so relax the check.

Fixes: 90e33d45 ("tun: enable napi_gro_frags() for TUN/TAP driver")
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 22ce97fe
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