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SubjectRe: [PATCH v2] drivers/net/wan/lapbether: Fixed the value of hard_header_len
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From: Xie He <xie.he.0141@gmail.com>
Date: Sun, 5 Jul 2020 17:45:21 -0700

> When this driver transmits data,
> first this driver will remove a pseudo header of 1 byte,
> then the lapb module will prepend the LAPB header of 2 or 3 bytes,
> then this driver will prepend a length field of 2 bytes,
> then the underlying Ethernet device will prepend its own header.
>
> So, the header length required should be:
> -1 + 3 + 2 + "the header length needed by the underlying device".
>
> This patch fixes kernel panic when this driver is used with AF_PACKET
> SOCK_DGRAM sockets.
>
> Signed-off-by: Xie He <xie.he.0141@gmail.com>

Applied, thank you.

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