Re: virtio-net: kernel panic in virtio_net.c

On Wed, 9 Jun 2021 08:24:20 +0200, Greg KH [off-list ref] wrote:

On Wed, Jun 09, 2021 at 02:08:17PM +0800, Xuan Zhuo wrote:

quoted

On Wed, 9 Jun 2021 06:50:10 +0200, Greg KH [off-list ref] wrote:

quoted

On Wed, Jun 09, 2021 at 09:48:33AM +0800, Xuan Zhuo wrote:

quoted

quoted

quoted

With this patch and the latest net branch I no longer get crashes.

Did this ever get properly submitted to the networking tree to get into
5.13-final?

The patch has been submitted.

	[PATCH net] virtio-net: fix for skb_over_panic inside big mode

Submitted where?  Do you have a lore.kernel.org link somewhere?

https://lore.kernel.org/netdev/20210603170901.66504-1-xuanzhuo@linux.alibaba.com/ (local)

So this is commit 1a8024239dac ("virtio-net: fix for skb_over_panic
inside big mode") in Linus's tree, right?

YES.

But why is that referencing:
	Fixes: fb32856b16ad ("virtio-net: page_to_skb() use build_skb when there's sufficient tailroom")

This problem was indeed introduced in fb32856b16ad.

I confirmed that this commit fb32856b16ad was first entered in 5.13-rc1, and the
previous 5.12 did not have this commit fb32856b16ad.

I'm not sure if it helped you.

Thanks.

when this problem was seen in stable kernels that had a different commit
backported to it?

Is there nothing needed to be done for the stable kernel trees?

confused,

greg k-h

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