Error building qubes

User Support 4.1
#1

After running “make get-sources” I run into this issue every time.

make[1]: Entering directory '/home/user/qubes-builder/qubes-src/linux-kernel' if [ -f /usr/bin/qvm-run-vm ]; \ then qvm-run-vm --dispvm 2>/dev/null xzcat <linux-5.10.104.tar.xz.UNTRUSTED > linux-5.10.104.tar.UNTRUSTED; \ else xzcat <linux-5.10.104.tar.xz.UNTRUSTED > linux-5.10.104.tar.UNTRUSTED; fi make[1]: *** [Makefile:74: linux-5.10.104.tar.UNTRUSTED] Error 126 rm linux-5.10.104.tar.UNTRUSTED make[1]: Leaving directory '/home/user/qubes-builder/qubes-src/linux-kernel' make: *** [Makefile:226: linux-kernel.get-sources-extra] Error 2

I am following the “Qubes builder” instructions. The only reference to this error is on a github issue only referring to the error as an example for properly verbose errors. Which is kind of ironic because I am not entirely certain how to go about solving this problem.

#2

It (tries to) use DispVM to decompress the kernel. Looks like DispVM start failed - maybe not enough RAM? or DispVM not configured?

#3

It has 8GB of ram available so i assume it isn’t that but I’m not sure what configuration DispVM needs to be in for this to work. Is it in the docs?

#4

Hi, thanks for posting and also experiencing same issue with make get-sources:

→ Downloading additional sources for linux-kernel…
make[1]: Entering directory ‘/home/user/Temp/qubes-builder/src/qubes-src/linux-kernel’
if [ -f /usr/bin/qvm-run-vm ];
then qvm-run-vm --dispvm 2>/dev/null xzcat <linux-5.10.104.tar.xz.UNTRUSTED > linux-5.10.104.tar.UNTRUSTED;
else xzcat <linux-5.10.104.tar.xz.UNTRUSTED > linux-5.10.104.tar.UNTRUSTED; fi
make[1]: *** [Makefile:74: linux-5.10.104.tar.UNTRUSTED] Error 126
rm linux-5.10.104.tar.UNTRUSTED
make[1]: Leaving directory ‘/home/user/Temp/qubes-builder/src/qubes-src/linux-kernel’
make: *** [Makefile:226: linux-kernel.get-sources-extra] Error 2

Any insights on how to configure DispVM or anything else to resolve issue would be appreciated.

1 Like
#5

When DispVM fails to start in Qubes 4.1, there should be a notification about it. In Qubes 4.0 not all the cases had notification. In any case, you can check journalctl in dom0 for more details about it.

#6

This is the line:

Mar 14 18:24:30 dom0 qrexec-policy-daemon[2455]: qrexec: qubes.VMShell+WaitForSession: builder1 -> @dispvm: denied: policy define 'allow' action to @dispvm at /etc/qubes/policy.d/90-default.policy:94 but no DispVM base is set for this VM

But how do I set a base for the VM. I have a debian and a whonix disposable vm but I’m guessing this is something else?