netdev - Re: [PATCH net-next 2/3] net: fix napi_consume

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Message-ID: <ad338b41-fcf3-4861-8106-93e6d013451c@nvidia.com>
Date: Wed, 12 Nov 2025 15:26:54 +0000
From: Jon Hunter <jonathanh@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuniyu@...gle.com>,
 Willem de Bruijn <willemb@...gle.com>, netdev@...r.kernel.org,
 eric.dumazet@...il.com,
 "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH net-next 2/3] net: fix napi_consume_skb() with alien skbs


On 12/11/2025 14:08, Eric Dumazet wrote:

...

>> I have noticed a suspend regression on one of our Tegra boards. Bisect
>> is pointing to this commit and reverting this on top of -next fixes the
>> issue.
>>
>> Out of all the Tegra boards we test only one is failing and that is the
>> tegra124-jetson-tk1. This board uses the realtek r8169 driver ...
>>
>>    r8169 0000:01:00.0: enabling device (0140 -> 0143)
>>    r8169 0000:01:00.0 eth0: RTL8168g/8111g, 00:04:4b:25:b2:0e, XID 4c0, IRQ 132
>>    r8169 0000:01:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
>>
>> I don't see any particular crash or error, and even after resuming from
>> suspend the link does come up ...
>>
>>    r8169 0000:01:00.0 enp1s0: Link is Down
>>    tegra-xusb 70090000.usb: Firmware timestamp: 2014-09-16 02:10:07 UTC
>>    OOM killer enabled.
>>    Restarting tasks: Starting
>>    Restarting tasks: Done
>>    random: crng reseeded on system resumption
>>    PM: suspend exit
>>    ata1: SATA link down (SStatus 0 SControl 300)
>>    r8169 0000:01:00.0 enp1s0: Link is Up - 1Gbps/Full - flow control rx/tx
>>
>> However, the board does not seem to resume fully. One thing I should
>> point out is that for testing we always use an NFS rootfs. So this
>> would indicate that the link comes up but networking is still having
>> issues.
>>
>> Any thoughts?
>>
>> Jon
> 
> Perhaps try : https://patchwork.kernel.org/project/netdevbpf/patch/20251111151235.1903659-1-edumazet@google.com/


That does indeed fix it. Feel free to add my ...

Tested-by: Jon Hunter <jonathanh@...dia.com>

Thanks
Jon

-- 
nvpublic