Crash on archlinux #405
Comments
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I had a similar Issue on ALL my Fedora Linux 41 Systems. Basically I lost ALL IPv4 DHCP & Static + ALL IPv6 DHCP Connectivity 👎. Not exactly the same Error, but similar I guess -> #410 |
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It sounds to me like network-manager and dhcpcd try to act on the same interfaces and conflict with each others' actions. |
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Not in my Case at least, since I explicitely disabled NetworkManager while trying (I thought that they might conflict indeed). |
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I think I have an idea onto why this crash happens I was tinkering with creating bridge connection over Ethernet and all.
I do think the part when I delete the Ethernet interface causes dhcpcd to crash. |
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It's making me pull my Hair out. Now I need to fix like 6-8 Fedora Servers and either move everything to Add Insult to Injury the fact that I have IPv6 Connectivity BUT I also tried to install dhcpcd-10.0.10-1.fc42.x86_64.rpm from Fedora koji (Build Server) fc42 Build but also that crashes :(. EDIT 1: setting That does NOT change the Fact however that it took me a LOT of Time to Figure out how to configure Also because that's what I use on Debian/Ubuntu. And NetworkManager is an absolute PITA in almost every Aspect I can think of ... |
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You might have some other dhcp client running like systemd-networkd, network manager will automatically detect it and control over dbus. dhcpcd does not do that, either way recommend to make sure it’s off |
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It's disabled and off ... Based on a previous similar Issue, I start suspecting Other likely culprit as usual might be SELinux although I couldn't find anything of relevance in the logs 😞. |
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I just found I have 1 or 2 Fedora 41 Systems where the Issue apparently does NOT appear ... Weird. EDIT 1: only on 1 System fully updated the Issue does NOT show up. And for whatever reason, if there are 2 Network Cards presents on the System, then Weird ... |
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On the working System (with only 1 Network Connection), applying one (BIG) Update broke So something happened and one of these Packages is responsible for it: EDIT 1: trying to execute a. IPv4 Seems to work b. It seems to hang on IPv6 actually For more Troubleshooting I'd need some guidance, as I'm not very good at understanding all of the different Options 😞. |
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@F8RZD: you might want to obfuscate your IPv6 Prefix 😉. About the Segmentation Fault, that Message seems a bit different than mine (I am on a slightly older Version). Either Way, I wouldn't call either of the behaviors (Segmentation Fault / Hungup) as "normal". It mentioned |
I kinda f,d that up but it's ok since it's incoming traffic is blocked. |
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the thing is if you delete the default inteface through Network Manager dhcpcd seg faults |
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Weird. In my Case it seems that with 2 Network Interfaces "physically" (well, it's a Virtual Server in my Case) presents and configured in That's basically the only situation where it doesn't :(. Not sure if we need to try to run using |
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I tried with |
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$ cat .gdbinit |
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@perkelix: do you want me to run the previous Command that I tried to run with these Settings ? Can you please put it in a Code block so it's clear which |
If you don't use gdb too often, putting these into your config produces a good basic set of data. |
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Well something isn't working unfortunately 😞 Anyway, complete Command & Output |
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dhcpcd crashes after some set of actions I do(I have not yet pin pointed when exactly it happens)
sudo systemctl status dhcpcd × dhcpcd.service - DHCP/ IPv4LL/ IPv6RA/ DHCPv6 client on all interfaces Loaded: loaded (/usr/lib/systemd/system/dhcpcd.service; enabled; preset: disabled) Active: failed (Result: core-dump) since Thu 2024-11-14 12:42:26 +0330; 1min 9s ago Duration: 1min 56.251s Invocation: da6d92bbb82f47a7866966b4d4211a9e Process: 991 ExecStart=/usr/bin/dhcpcd -q -B (code=dumped, signal=SEGV) Main PID: 991 (code=dumped, signal=SEGV) Mem peak: 9M CPU: 46ms Nov 14 12:40:35 17F dhcpcd[1013]: enp56s0u1u1c2: probing address 192.168.17.96/24 Nov 14 12:40:39 17F dhcpcd[1013]: enp56s0u1u1c2: leased 192.168.17.96 for 720 seconds Nov 14 12:40:39 17F dhcpcd[1013]: enp56s0u1u1c2: adding route to 192.168.17.0/24 Nov 14 12:40:39 17F dhcpcd[1013]: enp56s0u1u1c2: adding default route via 192.168.17.1 Nov 14 12:40:39 17F dhcpcd[1891]: Dropped protocol specifier '.dhcp' from 'enp56s0u1u1c2.dhcp'. Using 'enp56s0u1u1c2' (ifindex=3). Nov 14 12:40:39 17F dhcpcd[1891]: Failed to set DNS configuration: Could not activate remote peer 'org.freedesktop.resolve1': activation req> Nov 14 12:40:45 17F dhcpcd[1013]: enp56s0u1u1c2: no IPv6 Routers available Nov 14 12:42:26 17F dhcpcd[1013]: enp56s0u1u1c2: pid 985 deleted IP address 192.168.17.96/24 Nov 14 12:42:26 17F systemd[1]: dhcpcd.service: Main process exited, code=dumped, status=11/SEGV Nov 14 12:42:26 17F systemd[1]: dhcpcd.service: Failed with result 'core-dump'.dhcpcd --version
dhcpcd 10.1.0
Copyright (c) 2006-2024 Roy Marples
Compiled in features: INET ARP ARPing IPv4LL INET6 DHCPv6 AUTH PRIVSEP
I use archlinux with linux-zen kernel
I also use NetworkManager and a bridge connection
I think this happens when I delete my Ethernet connection not entirely sure though
I'd gladly provide any additional information on the matter.
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