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From: Sasha Levin <sashal@kernel.org>
To: Petko Manolov <petkan@nucleusys.com>
Cc: Joe Perches <joe@perches.com>,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Anant Thazhemadam <anant.thazhemadam@gmail.com>,
	syzbot+abbc768b560c84d92fd3@syzkaller.appspotmail.com,
	"David S . Miller" <davem@davemloft.net>,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 5.8 18/24] net: usb: rtl8150: set random MAC address when set_ethernet_addr() fails
Date: Wed, 14 Oct 2020 10:04:01 -0400
Message-ID: <20201014140401.GR2415204@sasha-vm> (raw)
In-Reply-To: <20201012210105.GA26582@nucleusys.com>

On Tue, Oct 13, 2020 at 12:01:06AM +0300, Petko Manolov wrote:
>On 20-10-12 12:11:18, Joe Perches wrote:
>> On Mon, 2020-10-12 at 15:02 -0400, Sasha Levin wrote:
>> > From: Anant Thazhemadam <anant.thazhemadam@gmail.com>
>> >
>> > [ Upstream commit f45a4248ea4cc13ed50618ff066849f9587226b2 ]
>> >
>> > When get_registers() fails in set_ethernet_addr(),the uninitialized
>> > value of node_id gets copied over as the address.
>> > So, check the return value of get_registers().
>> >
>> > If get_registers() executed successfully (i.e., it returns
>> > sizeof(node_id)), copy over the MAC address using ether_addr_copy()
>> > (instead of using memcpy()).
>> >
>> > Else, if get_registers() failed instead, a randomly generated MAC
>> > address is set as the MAC address instead.
>>
>> This autosel is premature.
>>
>> This patch always sets a random MAC.
>> See the follow on patch: https://lkml.org/lkml/2020/10/11/131
>> To my knowledge, this follow-ob has yet to be applied:
>
>ACK, the follow-on patch has got the correct semantics.

I'll hold off on this patch until the follow-on is merged, thanks!

-- 
Thanks,
Sasha

  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20201012190239.3279198-1-sashal@kernel.org>
2020-10-12 19:02 ` [PATCH AUTOSEL 5.8 10/24] net: usb: ax88179_178a: add Toshiba usb 3.0 adapter Sasha Levin
2020-10-12 19:02 ` [PATCH AUTOSEL 5.8 12/24] net: usb: ax88179_178a: add MCT " Sasha Levin
2020-10-12 19:02 ` [PATCH AUTOSEL 5.8 17/24] net: usb: pegasus: Proper error handing when setting pegasus' MAC address Sasha Levin
2020-10-12 19:02 ` [PATCH AUTOSEL 5.8 18/24] net: usb: rtl8150: set random MAC address when set_ethernet_addr() fails Sasha Levin
2020-10-12 19:11   ` Joe Perches
2020-10-12 21:01     ` Petko Manolov
2020-10-14 14:04       ` Sasha Levin [this message]
2020-10-12 19:02 ` [PATCH AUTOSEL 5.8 24/24] net: usb: qmi_wwan: add Cellient MPL200 card Sasha Levin

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