https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=283426
takahiro.kuros...@gmail.com changed:
What |Removed |Added
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CC| |takahiro.kuros...@gmail.com
--- Comment #7 from takahiro.kuros...@gmail.com ---
(from comment #0)
> The source(?) port appears to have been 43780 in both cases.
The port number 43780 in the backtrace is in network byte order,
so the actual port is 1195; probably used for OpenVPN.
>From core.txt.[45] if_ovpn.ko is loaded, I guess if_ovpn is used when
the panic occurred.
It looks that the problem exists around ovpn_udp_input() in sys/net/if_ovpn.c.
The function calls m_unshare() and might return false after m_unshare()
to tell the caller that the original mbuf is stil available.
But m_unshare() seems to drop M_PKTHDR by calling m_move_pkthdr()
(m_move_pkthdr() drops M_PKTHDR).
I think the implementation of m_unshare() is not good because it changes
the original mbuf, but I'm not sure.
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