[Bug 293548] ocserv: kernel panic with tun interfaces

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 04 Mar 2026 08:48:50 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293548

--- Comment #3 from mcurex <mcurex@yandex.ru> ---
Without second ocserv process, system was working a day, tomorrow I started
another proccess for now there was OpenVPN client with config with tun1024
interface. And page fault, reboot with panic again.

--- start cut ---

#8  __mtx_lock_sleep (c=c@entry=0xfffff800ae4bfb20) at kern_mutex.c:614
#9  tunoutput (ifp=<optimized out>, m0=0xfffff800ae24f200) at if_tuntap.c:1482
#10 ip_output (m=0xfffff800ae24f200) at ip_output.c:814
#11 udp_send (...) at udp_usrreq.c:1520


--- stop cut ----

VM faults: 22,894,682 (critical big?)
Copy-on-write faults: 9,252,252
Network interrupts: ~1.3 million/seconds
TUN active interfaces: 15+ (tun0, tun1, tun2, tun16, tun34, tun48, tun50...)

Two much for tun?

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