[systemd-bugs] [Bug 79789] systemd-networkd assertion failure with Xen vif

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79789

--- Comment #5 from Steven Noonan <steven at uplinklabs.net> ---
Well that explains why UseMTU was necessary. When setting the MTU it freed the
data structure, which then caused the hostname setup to break it.

==5269== Invalid read of size 8
==5269==    at 0x161953: link_set_hostname (networkd-link.c:690)
==5269==    by 0x16296D: dhcp_lease_acquired (networkd-link.c:942)
==5269==    by 0x162D18: dhcp_handler (networkd-link.c:1007)
==5269==    by 0x172E35: client_notify (sd-dhcp-client.c:200)
==5269==    by 0x175BC3: client_handle_message (sd-dhcp-client.c:1146)
==5269==    by 0x17614E: client_receive_message_raw (sd-dhcp-client.c:1270)
==5269==    by 0x12902F: source_dispatch (sd-event.c:2001)
==5269==    by 0x129F1B: sd_event_run (sd-event.c:2285)
==5269==    by 0x12A031: sd_event_loop (sd-event.c:2304)
==5269==    by 0x110727: main (networkd.c:100)
==5269==  Address 0x5a86d30 is 0 bytes inside a block of size 144 free'd
==5269==    at 0x4C2999C: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5269==    by 0x15F43A: link_free (networkd-link.c:132)
==5269==    by 0x15F477: link_unref (networkd-link.c:137)
==5269==    by 0x161F1A: link_set_mtu (networkd-link.c:768)
==5269==    by 0x1628BF: dhcp_lease_acquired (networkd-link.c:930)
==5269==    by 0x162D18: dhcp_handler (networkd-link.c:1007)
==5269==    by 0x172E35: client_notify (sd-dhcp-client.c:200)
==5269==    by 0x175BC3: client_handle_message (sd-dhcp-client.c:1146)
==5269==    by 0x17614E: client_receive_message_raw (sd-dhcp-client.c:1270)
==5269==    by 0x12902F: source_dispatch (sd-event.c:2001)
==5269==    by 0x129F1B: sd_event_run (sd-event.c:2285)
==5269==    by 0x12A031: sd_event_loop (sd-event.c:2304)

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