[uml-devel] uml_net zombie processes

[Thomas Meyer <thomas@m3y3r.de>]

Hi,

The uml_net network setup "fails" on my computer with:

[   15.930000] helper_wait : waitpid process 11673 failed, errno = 10
[   15.930000] * modprobe tun
               * ifconfig tap0 192.168.10.1 netmask 255.255.255.255 up
               * bash -c echo 1 > /proc/sys/net/ipv4/ip_forward
[   20.480000] helper_wait : waitpid process 11780 failed, errno = 10
[   20.480000] * route add -host 192.168.10.2 dev tap0
               * bash -c echo 1 >
/proc/sys/net/ipv4/conf/tap0/proxy_arp

because I run uml linux as a normal user and I guess these commands
fail, because of insufficient rights:
bash -c echo 1 > /proc/sys/net/ipv4/ip_forward
bash -c echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp

But this failure is okay for me, as firewalld, sets above options
correctly on my host computer.

The problem I see is that UML list two zombie processes:
  11780 root       20   0     0     0     0 Z  0.0  0.0  0:00.00 15:34 │  │     ├─ uml_net
  11673 root       20   0     0     0     0 Z  0.0  0.0  0:00.00 15:34 │  │     ├─ uml_net

UML seems to never reap those two processes, likely because of errno=10 exit code.

any idea how to fix this?

with kind regards
thomas


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