netdev - Re: [PATCH v2] packet: Fix error path in packet

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Message-Id: <20190509.134646.706587781958620517.davem@davemloft.net>
Date:   Thu, 09 May 2019 13:46:46 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     yuehaibing@...wei.com
Cc:     willemb@...gle.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, edumazet@...gle.com, maximmi@...lanox.com
Subject: Re: [PATCH v2] packet: Fix error path in packet_init

From: YueHaibing <yuehaibing@...wei.com>
Date: Thu, 9 May 2019 22:52:20 +0800

> kernel BUG at lib/list_debug.c:47!
 ...
> When modprobe af_packet, register_pernet_subsys
> fails and does a cleanup, ops->list is set to LIST_POISON1,
> but the module init is considered to success, then while rmmod it,
> BUG() is triggered in __list_del_entry_valid which is called from
> unregister_pernet_subsys. This patch fix error handing path in
> packet_init to avoid possilbe issue if some error occur.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
> v2: rework commit log

Applied and queued up for -stable, thank you.