[Bug 254303] Fatal trap 12: page fault while in kernel mode ((frr 7.5_1 + Freebsd 13 Beta3) zebra crashes server when routes are populated)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254303

--- Comment #5 from Aleks <a.ivanov at veesp.com> ---
(In reply to Marek Zarychta from comment #4)
So, I took kernel src from
https://download.freebsd.org/ftp/releases/amd64/13.0-RC2/src.txz
Build with "options     FIB_ALGO"
FreeBSD 13.0-RC2 FreeBSD 13.0-RC2 #0: Wed Mar 17 13:23:47 EET 2021    
:/usr/obj/usr/src/amd64.amd64/sys/CUSTOM  amd64
Disabled FRR autostart and rebooted the server.

After reboot I've set multipath=1 and loaded dpdk_lpm4/6, and after that
started FRR.
[fib_algo] inet.0 (bsearch4#13) rebuild_fd: switching algo to radix4_lockless
[fib_algo] fib_module_register: attaching dpdk_lpm4 to inet
[fib_algo] fib_module_register: attaching dpdk_lpm6 to inet6
[fib_algo] inet.0 (radix4_lockless#114) rebuild_fd: switching algo to dpdk_lpm4

After bringing up second BGP FullView session servers still crashed.

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