I'd be curious about that too, but I think the fundamental problem here
is probably that the Dbus interface code doesn't take into account that
the DHCP subsystem may not have been initialised at all: If there's no
--dhcp-range statement at all, then it won't have been initialised, and
the dBus lease-update method should check for that and return an error.
Lou, could you clarify if this bug occurs when there are NO dhcp-range
statements, or just no dhcp-range statements for the subnet in the
ethersfile. That's not quite clear from your bug report.
Cheers,
Simon
On 12/1/24 18:49, j...@gr-oss.io wrote:
Hi Lou,
I'd be curious if https://thekelleys.org.uk/gitweb/?
p=dnsmasq.git;a=commitdiff;h=f006be7842104a9f86fbf419326b7aad08ade61d
could fix your issue. It corrected a similarly-presenting issue in
OpenStack Ironic's updating of DHCP options recently.
It hasn't been added to any releases yet, so you will need to build it
locally. We have a bash function here: https://github.com/openstack/
ironic/blob/360e21124c2369174d7b38fbb8edf581e85f52e0/devstack/lib/
ironic#L3565
which builds the newer version for our CI, you're welcome to borrow it
-- although I'd suggest installing to /opt
or /usr/local unless you don't mind making your package manager angry :D.
-
Jay Faulkner
On 11/29/24 4:22 AM, Lou Lecrivain via Dnsmasq-discuss <dnsmasq-
disc...@lists.thekelleys.org.uk> wrote:
Hello,
I'd like to make a bug report following an issue discovered via
Proxmox VE #5949 (https://bugzilla.proxmox.com/show_bug.cgi?id=5949
<https:// bugzilla.proxmox.com/show_bug.cgi?id=5949>). This happens on
debian dnsmasq package version 2.89-1. I have not yet tested on latest
release / dev, but if you wish, I can try to reproduce on it too.
How to reproduce:
*
general dnsmasq configuration
*
configure interface (not sure this is mandatory for reproduction)
*
configure dhcp-option for a subnet (same comment)
*
do NOT create the dhcp-range in the config file
*
write ethers file with an entry that's in the subnet without dhcp-
range
*
ask for reload via systemd
*
update lease via dBus, see code with link below
https://git.proxmox.com/?p=pve-network.git;a=blob;f=src/PVE/Network/
SDN/Dhcp/
Dnsmasq.pm;h=ae52d3199e0fc51fd1401d7dd78085ad730e5588;hb=refs/heads/
master#l41 <https://git.proxmox.com/?p=pve-network.git;a=blob;f=src/
PVE/Network/SDN/Dhcp/
Dnsmasq.pm;h=ae52d3199e0fc51fd1401d7dd78085ad730e5588;hb=refs/heads/
master#l41>
*
segfault happens at this point
Restarting manually via systemctl after the crash does not yields any
further errors.
The crash/segmentation fault precisely happens just right after reload
is triggered. I have the following message in journalctl (sorry for
the french!):
nov. 28 12:49:38 debian12-dev systemd[1]: Starting
dnsmasq@simple.service - dnsmasq (simple) - A lightweight DHCP and
caching DNS server>
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: demarré, version 2.89
(taille de cache 150)
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: options à la
compilation : IPv6 GNU-getopt DBus no-UBus i18n IDN2 DHCP DHCPv6 no-
Lua TFTP >
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: Support DBus autorisé :
connecté au bus système
nov. 28 12:49:38 debian12-dev dnsmasq-dhcp[10598]: annonces de routeur
IPv6 activées
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: Lecture de /etc/resolv.conf
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: utilise le serveur de
nom 192.168.122.1#53
nov. 28 12:49:38 debian12-dev dnsmasq[10598]: cache vidé
nov. 28 12:49:39 debian12-dev systemd[1]: Started
dnsmasq@simple.service - dnsmasq (simple) - A lightweight DHCP and
caching DNS server.
nov. 28 12:49:44 debian12-dev systemd[1]: dnsmasq@simple.service: Main
process exited, code=killed, status=11/SEGV
Don't hesitate to get back to me if you need further details.
Best regards
--
Lou Lécrivain
Systems & Network engineer
WDZ GmbH
📧 lou.lecriv...@wdz.de <mailto:lou.lecriv...@wdz.de>
<https://outlook.office.com/bookwithme/
user/347bbab3d47d435cadf7ceea954b3...@wdz.de?anonymous&ep=signature>
Book a meeting with me <https://outlook.office.com/bookwithme/
user/347bbab3d47d435cadf7ceea954b3...@wdz.de?anonymous&ep=signature>
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