crash on brcmfmac

[lesar]

I have Ubuntu 20.04 64bit, ubuntu desktop, network-manager on RPI4 8GB
wifi work well for some time but then all gone very slow and system is unusable.

to me it seems a brcmfmac module problem.

My power configuration do not go well if switch off
"wi-fi can be turn off to power save": all wifi crash.

Rest of my power conf:
automatic suspend = no
action on turn off supply button = nothing
black screen = never

[lesar (leonardo-saracini)]

this brcmfmac is in linux-firmware and not in linux-raspi

[Juerg Haefliger (juergh)]

Might be a kernel problem so adding linux-raspi back.

[lesar (leonardo-saracini)]

from some day no more crash... I update system every day: it is possible some update have fix the problem

[lesar (leonardo-saracini)]

The crash is random and not too often but if I turn off "wi-fi can be turn off to power save": all wi-fi crash all time

[lesar (leonardo-saracini)]

add some syslog.log:
```log
Nov 2 10:03:57 leon-dev-pi dbus-daemon[4141]: [session uid=1000 pid=4141] Activating service name='org.gnome.Shell.CalendarServer' requested by ':1.38' (uid=1000 pid=4361 comm="/usr/bin/gnome-shell " label="unconfined")
Nov 2 10:03:57 leon-dev-pi gnome-shell[4361]: Ignored exception from dbus method: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
Nov 2 10:03:57 leon-dev-pi gnome-shell[4361]: Ignored exception from dbus method: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
Nov 2 10:03:57 leon-dev-pi dbus-daemon[4141]: [session uid=1000 pid=4141] Successfully activated service 'org.gnome.Shell.CalendarServer'
Nov 2 10:03:57 leon-dev-pi wpa_supplicant[1839]: RRM: Ignoring radio measurement request: Not RRM network
Nov 2 10:03:57 leon-dev-pi org.gnome.Shell.CalendarServer[138537]: free(): double free detected in tcache 2
Nov 2 10:03:58 leon-dev-pi wpa_supplicant[1839]: wlan0: Associated with b6:be:76:0d:4b:75
Nov 2 10:03:58 leon-dev-pi systemd-networkd[1771]: wlan0: Lost carrier
Nov 2 10:03:58 leon-dev-pi systemd-timesyncd[1715]: No network connectivity, watching for changes.
Nov 2 10:03:58 leon-dev-pi wpa_supplicant[1839]: wlan0: CTRL-EVENT-CONNECTED - Connection to b6:be:76:0d:4b:75 completed [id=0 id_str=]
Nov 2 10:03:58 leon-dev-pi systemd-networkd[1771]: wlan0: Gained carrier
Nov 2 10:03:58 leon-dev-pi wpa_supplicant[1839]: wlan0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Nov 2 10:03:58 leon-dev-pi systemd-networkd[1771]: wlan0: Connected WiFi access point: LEOCASA (b6:be:76:0d:4b:75)
Nov 2 10:03:58 leon-dev-pi systemd-timesyncd[1715]: Network configuration changed, trying to establish connection.
Nov 2 10:03:58 leon-dev-pi systemd-timesyncd[1715]: Initial synchronization to time server 91.189.91.157:123 (ntp.ubuntu.com).
Nov 2 10:03:58 leon-dev-pi systemd-resolved[1773]: Using degraded feature set (UDP) for DNS server 192.168.88.1.
Nov 2 10:03:59 leon-dev-pi dbus-daemon[4141]: [session uid=1000 pid=4141] Activating service name='org.gnome.Shell.CalendarServer' requested by ':1.38' (uid=1000 pid=4361 comm="/usr/bin/gnome-shell " label="unconfined")
Nov 2 10:03:59 leon-dev-pi dbus-daemon[4141]: [session uid=1000 pid=4141] Successfully activated service 'org.gnome.Shell.CalendarServer'
Nov 2 10:03:59 leon-dev-pi org.gnome.Shell.CalendarServer[138612]: free(): double free detected in tcache 2
Nov 2 10:04:00 leon-dev-pi dbus-daemon[4141]: [session uid=1000 pid=4141] Activating service name='org.gnome.Shell.CalendarServer' requested by ':1.38' (uid=1000 pid=4361 comm="/usr/bin/gnome-shell " label="unconfined")
Nov 2 10:04:00 leon-dev-pi gnome-shell[4361]: Ignored exception from dbus method: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
Nov 2 10:04:00 leon-dev-pi gnome-shell[4361]: Ignored exception from dbus method: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying
Nov 2 10:04:0...

[lesar (leonardo-saracini)]

Other log:
```log
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.732283] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.738536] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.745435] brcmfmac: dongle trap info: type 0x4 @ epc 0x0007a094
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.745435] cpsr 0x6000019f spsr 0x600001bf sp 0x0025f888
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.745435] lr 0x0007a093 pc 0x0007a094 offset 0x25f830
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.745435] r0 0x00000036 r1 0x00000005 r2 0x00000000 r3 0x00000001
Nov 6 16:31:11 leon-dev-pi kernel: [ 2217.745435] r4 0x002494d0 r5 0x00000000 r6 0x00249460 r7 0x00000004
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.288341] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.294749] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301905] brcmfmac: dongle trap info: type 0x4 @ epc 0x0007a094
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301905] cpsr 0x6000019f spsr 0x600001bf sp 0x0025f888
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301905] lr 0x0007a093 pc 0x0007a094 offset 0x25f830
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301905] r0 0x00000036 r1 0x00000005 r2 0x00000000 r3 0x00000001
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301905] r4 0x002494d0 r5 0x00000000 r6 0x00249460 r7 0x00000004
Nov 6 16:31:14 leon-dev-pi kernel: [ 2220.301919] ieee80211 phy0: brcmf_cfg80211_get_station: GET STA INFO failed, -110

```

[lesar (leonardo-saracini)]

my pi seams like windows 95: sometime crash two time at day.
after crash wifi cannot discover network.
I cannot understand what service restart so I do a machine reboot.
:-(

[lesar (leonardo-saracini)]

I have removed NetworkManager
configure netplan and use renderer: networkd
My wifi connection is go from 0,5 Gb to 5GB
and seams more stable.
next day I check better.

best regards,
Leonardo

[lesar (leonardo-saracini)]

The last workaround is useful.
so the problem is in netowork-manager.

best regards,
Leonardo