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Re: kern/42455: tstile hang with nfs


the debug code (nfs_vnops.c rev.1.285) seems racy at best.
i don't understand what the check is trying to detect.
the mbuf chain is handed off to the underlying layers at that point and
it's completely legal for eg. network drivers clears mb->m_next while
keeping the next mbuf in the mbuf chain.
can you please fix?


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