error - exiting (due to assertion failure)

[Paul Ssekamatte]

Hi, 
I’m running BIND 9.18.30-0ubuntu0.22.04.2-Ubuntu in production on a university network. 
Recently, we have been experiencing the error shown below:

named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc_assertion_failed+0x10) [0x7fe1b4e1d7c0]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc_assertion_failed+0x10) [0x7fe1b4e1d7c0]
named[4787]: /lib/x86_64-linux-gnu/libdns-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x3a2f5) [0x7fe1b4c0c2f5]
named[4787]: /lib/x86_64-linux-gnu/libdns-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x3a2f5) [0x7fe1b4c0c2f5]
named[4787]: /lib/x86_64-linux-gnu/libdns-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(dns_cache_create+0x1e4) [0x7fe1b4c0cdc4]
named[4787]: /lib/x86_64-linux-gnu/libdns-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(dns_cache_create+0x1e4) [0x7fe1b4c0cdc4]
named[4787]: /usr/sbin/named(+0x33524) [0x562bd4cd3524]
named[4787]: /usr/sbin/named(+0x33524) [0x562bd4cd3524]
named[4787]: /usr/sbin/named(+0x41e6f) [0x562bd4ce1e6f]
named[4787]: /usr/sbin/named(+0x41e6f) [0x562bd4ce1e6f]
named[4787]: /usr/sbin/named(+0x43771) [0x562bd4ce3771]
named[4787]: /usr/sbin/named(+0x43771) [0x562bd4ce3771]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc_task_run+0x2bf) [0x7fe1b4e4553f]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc_task_run+0x2bf) [0x7fe1b4e4553f]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x1e993) [0x7fe1b4e09993]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x1e993) [0x7fe1b4e09993]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26368) [0x7fe1b4e11368]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26368) [0x7fe1b4e11368]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26b77) [0x7fe1b4e11b77]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26b77) [0x7fe1b4e11b77]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26d96) [0x7fe1b4e11d96]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x26d96) [0x7fe1b4e11d96]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(+0x91ad) [0x7fe1b468e1ad]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(+0x91ad) [0x7fe1b468e1ad]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(+0x250fe) [0x7fe1b46aa0fe]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(+0x250fe) [0x7fe1b46aa0fe]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(uv_run+0x678) [0x7fe1b4693c48]
named[4787]: /lib/x86_64-linux-gnu/libuv.so.1(uv_run+0x678) [0x7fe1b4693c48]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x2720a) [0x7fe1b4e1220a]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(+0x2720a) [0x7fe1b4e1220a]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc__trampoline_run+0x1a) [0x7fe1b4e4d50a]
named[4787]: /lib/x86_64-linux-gnu/libisc-9.18.30-0ubuntu0.22.04.2-Ubuntu.so(isc__trampoline_run+0x1a) [0x7fe1b4e4d50a]
named[4787]: /lib/x86_64-linux-gnu/libc.so.6(+0x94ac3) [0x7fe1b42b3ac3]
named[4787]: /lib/x86_64-linux-gnu/libc.so.6(+0x94ac3) [0x7fe1b42b3ac3]
named[4787]: /lib/x86_64-linux-gnu/libc.so.6(+0x126850) [0x7fe1b4345850]
named[4787]: /lib/x86_64-linux-gnu/libc.so.6(+0x126850) [0x7fe1b4345850]
named[4787]: exiting (due to assertion failure)
named[4787]: exiting (due to assertion failure)

Please advise, I have checked online with no luck.
Thanks

with kind regards,

Paul Ssekamatte
Directorate for ICT Services (DICTS)
Makerere University
Mob: 0782-094368

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