Russell King wrote:
I don't know if the code is using fragment lists in ip_fragment(), but on reading the code a question comes to mind: if we have a list of fragments, does each fragment skb have a valid (and refcounted) dst pointer before ip_fragment() does it's job? If yes, then isn't the first ip_copy_metadata() in ip_fragment() going to overwrite this pointer without dropping the refcount?
Nice spotting. If conntrack isn't loaded defragmentation happens after routing, so this is likely the cause.
Regards Patrick
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