Jarek Poplawski wrote:

According to this and another similar lockdep report inet_fragment
locks are taken from nf_ct_frag6_gather() with softirqs enabled, but
these locks are mainly used in softirq context, so disabling BHs is
necessary.

Yes, this can happen on the local output path,

David & Patrick,

It looks like this patch could be applied.

Looks mostly fine, but don't we also have to disable BHs for
the inet_frag_find() call in nf_ct_frag6_gather()?