Comment 4 for bug 1906331

I seem to experience the same crashes with systemd 246.6-1ubuntu1 in Ubuntu 20.10.

Maybe this is just a coincidence, but my nearest upstream router and DNS server is also a OpenWRT box.

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root@nb:~# LC_ALL=C dmesg -T --level=info | grep systemd-resolve
[Sun Jan 3 18:16:16 2021] systemd-resolve[111337]: segfault at bd4fc2b1 ip 00007fd30bfcce2d sp 00007fffe20fc600 error 4 in libsystemd-shared-246.so[7fd30be7c000+183000]
[Sun Jan 3 18:24:52 2021] systemd-resolve[113203]: segfault at 2938c5e25a ip 00007f411794fe2d sp 00007ffdf9cb4090 error 4 in libsystemd-shared-246.so[7f41177ff000+183000]
[Sun Jan 3 19:19:31 2021] systemd-resolve[128158]: segfault at ce4afa92 ip 00007fa333aace2d sp 00007ffd7a9fad80 error 4 in libsystemd-shared-246.so[7fa33395c000+183000]
[Sun Jan 3 19:31:09 2021] systemd-resolve[130559]: segfault at 208 ip 000055f0f07a88de sp 00007ffdb6a507b0 error 6 in systemd-resolved[55f0f078e000+43000]
[Sun Jan 3 20:07:40 2021] systemd-resolve[140293]: segfault at 1600000000 ip 0000001600000000 sp 00007ffdf00dc878 error 14 in systemd-resolved[5641b5699000+a000]
[Sun Jan 3 20:30:54 2021] systemd-resolve[145920]: segfault at 100000003 ip 00007f2ef6e2ee2d sp 00007ffee0887750 error 4 in libsystemd-shared-246.so[7f2ef6cde000+183000]
[Sun Jan 3 20:42:32 2021] systemd-resolve[148365]: segfault at cd29ee30 ip 00007fecea8cce2d sp 00007ffcfb1d0f10 error 4 in libsystemd-shared-246.so[7fecea77c000+183000]
[Sun Jan 3 20:52:42 2021] systemd-resolve[151159]: segfault at 208 ip 00005556f9cec8de sp 00007ffd290577b0 error 6 in systemd-resolved[5556f9cd2000+43000]
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root@nb:~# journalctl -u systemd-resolved.service -g Assertion | tail
Jan 03 14:37:37 nb systemd-resolved[115214]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 14:43:02 nb systemd-resolved[118852]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 14:47:40 nb systemd-resolved[120689]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 14:58:03 nb systemd-resolved[123746]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 15:08:12 nb systemd-resolved[125963]: Assertion '*_head == _item' failed at src/resolve/resolved-dns-query.c:331, function dns_query_free(). Aborting.
Jan 03 19:39:20 nb systemd-resolved[133292]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 19:52:41 nb systemd-resolved[136857]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 20:19:23 nb systemd-resolved[143423]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
Jan 03 21:00:18 nb systemd-resolved[155101]: Assertion '*_head == _item' failed at src/resolve/resolved-dns-query.c:331, function dns_query_free(). Aborting.
Jan 03 21:12:33 nb systemd-resolved[157415]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at src/resolve/resolved-dns-query.c:479, function dns_query_complete(). Aborting.
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