Bug 2007974 - Linux 5.14 breaks wlan-ap traffic between wlan devices
Summary: Linux 5.14 breaks wlan-ap traffic between wlan devices
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 34
Hardware: x86_64
OS: Linux
unspecified
urgent
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-09-26 17:00 UTC by Harald Reindl
Modified: 2022-06-07 22:47 UTC (History)
18 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-06-07 22:47:13 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Harald Reindl 2021-09-26 17:00:04 UTC
Bridge: br-lan
Wireless: wlan0 with hostapd

smartphone (wlan) can talk to tv (ethernet)
smartphone (wlan) can talk to internet
smartphone (wlan) can talk to host
smartphone (wlan) can *no longer* talk to avr (wlan)
smartphone (lwan) can *no longer* talk to blueray-player (wlan)

no connection from yamaha AVR app to RX-A880 receiver
no ping from smartphone to RX-A880 receiver

from the host running the bridge and hostapd i can ping and connect to any other device no matter if it's wlan or ethernet

in mordern networks with only smartphones and notebooks this would be a showstopper

5.14.7-200.fc34.x86_64

--------------------------

reboot with 5.13.19 and all works as the years before, every device can talk to any other device no matter if it's connected to the ethernet bridge or via wlan on the same hostapd access point

--------------------------

[root@srv-rhsoft:~]$ cat /etc/hostapd/hostapd.conf
bssid=02:ab:cd:ef:12:30
driver=nl80211
hw_mode=g
country_code=AT
channel=acs_survey

ctrl_interface=/run/hostapd
ctrl_interface_group=0

################################################################
# wlan0                                                        #
################################################################

interface=wlan0

ssid=rhsoft-hardened
wpa_passphrase=******

bridge=br-lan
wpa=2
rsn_pairwise=CCMP

logger_syslog=-1
logger_syslog_level=2

ieee80211ac=1
ieee80211d=1
ieee80211h=1
ieee80211n=1
wme_enabled=1
wmm_enabled=1

require_ht=1
ht_capab=[HT20][HT40][SHORT-GI-40][DSSS_CCK-40][MAX-AMSDU-3839]

################################################################
# wlan1                                                        #
################################################################

bss=wlan1

ssid=rhsoft-guest
wpa_passphrase=******

bridge=br-guest
wpa=2
rsn_pairwise=CCMP

logger_syslog=-1
logger_syslog_level=2

ieee80211ac=1
ieee80211d=1
ieee80211h=1
ieee80211n=1
wme_enabled=1
wmm_enabled=1

require_ht=1
ht_capab=[HT20][HT40][SHORT-GI-40][DSSS_CCK-40][MAX-AMSDU-3839]

--------------------------

[root@srv-rhsoft:~]$ /usr/sbin/ip link show master br-lan
2: poe-spare: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel master br-lan state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:e0:4c:80:5c:ca brd ff:ff:ff:ff:ff:ff
    altname enp5s0
3: poe-phone: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br-lan state UP mode DEFAULT group default qlen 1000
    link/ether 00:e0:4c:80:5c:cb brd ff:ff:ff:ff:ff:ff
    altname enp6s0
6: lan-spare2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br-lan state DOWN mode DEFAULT group default qlen 1000
    link/ether ac:16:2d:a1:74:ed brd ff:ff:ff:ff:ff:ff
    altname enp1s0f1
7: lan-spare1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br-lan state DOWN mode DEFAULT group default qlen 1000
    link/ether ac:16:2d:a1:74:ee brd ff:ff:ff:ff:ff:ff
    altname enp1s0f2
8: lan-tv: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br-lan state DOWN mode DEFAULT group default qlen 1000
    link/ether ac:16:2d:a1:74:ef brd ff:ff:ff:ff:ff:ff
    altname enp1s0f3
9: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-lan state UP mode DEFAULT group default qlen 1000
    link/ether 02:ab:cd:ef:12:30 brd ff:ff:ff:ff:ff:ff permaddr 28:10:7b:ca:be:51
    altname wlp2s0

Comment 1 Harald Reindl 2021-09-26 17:28:31 UTC
02:00.0 Network controller: Qualcomm Atheros AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express) (rev 01)
        Subsystem: D-Link System Inc DWA-556 Xtreme N PCI Express Desktop Adapter
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at f7b00000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] Power Management version 2
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [60] Express Legacy Endpoint, MSI 00
        Capabilities: [90] MSI-X: Enable- Count=1 Masked-
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Virtual Channel
        Kernel driver in use: ath9k
        Kernel modules: ath9k

Comment 2 Harald Reindl 2021-09-26 20:01:04 UTC
upstream bugreport: https://bugzilla.kernel.org/show_bug.cgi?id=214531

Comment 3 Harald Reindl 2021-10-11 09:57:48 UTC
5.14.11-200.fc34.x86_64 seems to fix the problem, maybe it's one of the mac80211 relevant changes in 5.14.10 but none of the changelogs at kernel.org from 5.14.9 to 5.14.11 really explains the fix - at least for me

Comment 4 Ben Cotton 2022-05-12 15:53:54 UTC
This message is a reminder that Fedora Linux 34 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 34 on 2022-06-07.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '34'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 34 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

Comment 5 Ben Cotton 2022-06-07 22:47:13 UTC
Fedora Linux 34 entered end-of-life (EOL) status on 2022-06-07.

Fedora Linux 34 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release.

Thank you for reporting this bug and we are sorry it could not be fixed.


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