Public bug reported:
Hostapd fails to start on a recent 5.10+ kernel:
$ cat repro.sh
#!/bin/sh
sudo modprobe mac80211_hwsim
sudo ip a flush dev wlan0
sudo ip a add 192.168.5.1/24 dev wlan0
cat << EOF > hostapd.conf
interface=wlan0
driver=nl80211
hw_mode=b
channel=1
ssid=fake net
EOF
sudo hostapd hostapd.conf
ubuntu@hirsute-amd64:~$ ./repro.sh
Configuration file: hostapd.conf
nl80211: kernel reports: expected nested data
Using interface wlan0 with hwaddr 02:00:00:00:00:00 and ssid "fake net"
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED
^C
wlan0: interface state ENABLED->DISABLED
wlan0: AP-DISABLED
wlan0: CTRL-EVENT-TERMINATING
nl80211: deinit ifname=wlan0 disabled_11b_rates=0
this due to the mismanagement of the newly added S1G band, the attached
patch fixes it.
** Affects: wpa (Ubuntu)
Importance: Undecided
Status: New
** Affects: wpa (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Patch added: "Upstream cherry pick for S1G band fix"
https://bugs.launchpad.net/bugs/1912609/+attachment/5455142/+files/wpa_2.9-1ubuntu10.debdiff
** Also affects: wpa (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Patch removed: "Upstream cherry pick for S1G band fix"
https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1912609/+attachment/5455142/+files/wpa_2.9-1ubuntu10.debdiff
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https://bugs.launchpad.net/bugs/1912609
Title:
mac80211_hwsim: hostapd fails to start with S1G band
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