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XBMC on Raspberry Pi, Bleeding Edge
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Kernel-headers: scripts/mod/modpost: Exec format error #919

Closed Emgalai closed 2 years ago

Emgalai commented 2 years ago

I am trying to build this wifi driver on Raspberry Pi B+ (armv6): https://github.com/brektrou/rtl8821CU

I have latest xbian-package-kernel-headers (5.4.150+-1633004638) installed.

While building the driver, I get an Exex format error about modpost:

xbian@xbian ~/build/rtl8821CU $ make make ARCH=arm CROSS_COMPILE= -C /lib/modules/5.4.150+/build M=/home/xbian/build/rtl8821CU modules make[1]: Entering directory '/usr/src/linux-headers-5.4.150+' CC [M] /home/xbian/build/rtl8821CU/core/rtw_cmd.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_security.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_debug.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_io.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_ioctl_query.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_ioctl_set.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_ieee80211.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_mlme.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_mlme_ext.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_mi.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_wlan_util.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_vht.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_pwrctrl.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_rf.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_recv.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_sta_mgt.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_ap.o CC [M] /home/xbian/build/rtl8821CU/core/mesh/rtw_mesh.o CC [M] /home/xbian/build/rtl8821CU/core/mesh/rtw_mesh_pathtbl.o CC [M] /home/xbian/build/rtl8821CU/core/mesh/rtw_mesh_hwmp.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_xmit.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_p2p.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_rson.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_tdls.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_br_ext.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_iol.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_sreset.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_btcoex_wifionly.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_btcoex.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_beamforming.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_odm.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_rm.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_rm_fsm.o CC [M] /home/xbian/build/rtl8821CU/core/efuse/rtw_efuse.o CC [M] /home/xbian/build/rtl8821CU/os_dep/osdep_service.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/os_intfs.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/usb_intf.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/usb_ops_linux.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/ioctl_linux.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/xmit_linux.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/mlme_linux.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/recv_linux.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/ioctl_cfg80211.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/rtw_cfgvendor.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/wifi_regd.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/rtw_android.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/rtw_proc.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/rtw_rhashtable.o CC [M] /home/xbian/build/rtl8821CU/os_dep/linux/ioctl_mp.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_intf.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_com.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_com_phycfg.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_phy.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_dm.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_dm_acs.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_btcoex_wifionly.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_btcoex.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_mp.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_mcc.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_hci/hal_usb.o CC [M] /home/xbian/build/rtl8821CU/hal/led/hal_led.o CC [M] /home/xbian/build/rtl8821CU/hal/led/hal_usb_led.o CC [M] /home/xbian/build/rtl8821CU/hal/hal_halmac.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_halinit.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_mac.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_cmd.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_phy.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_dm.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/rtl8821c_ops.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/hal8821c_fw.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_halinit.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_halmac.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_io.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_xmit.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_recv.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_led.o CC [M] /home/xbian/build/rtl8821CU/hal/rtl8821c/usb/rtl8821cu_ops.o CC [M] /home/xbian/build/rtl8821CU/hal/efuse/rtl8821c/HalEfuseMask8821C_USB.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_api.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_bb_rf_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_cfg_wmac_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_common_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_efuse_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_flash_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_fw_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_gpio_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_init_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_mimo_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_pcie_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_sdio_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_usb_88xx.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_cfg_wmac_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_common_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_gpio_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_init_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_pcie_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_phy_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_pwr_seq_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_sdio_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/halmac/halmac_88xx/halmac_8821c/halmac_usb_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_debug.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_antdiv.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_soml.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_smt_ant.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_antdect.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_interface.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_phystatus.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_hwconfig.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_dig.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_pathdiv.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_rainfo.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_dynamictxpower.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_adaptivity.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_cfotracking.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_noisemonitor.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_beamforming.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_dfs.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/txbf/halcomtxbf.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/txbf/haltxbfinterface.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/txbf/phydm_hal_txbf_api.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_adc_sampling.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_ccx.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_psd.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_primary_cca.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_cck_pd.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_rssi_monitor.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_auto_dbg.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_math_lib.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_api.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_pow_train.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/phydm_lna_sat.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halrf.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halrf_debug.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halphyrf_ce.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halrf_powertracking_ce.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halrf_powertracking.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/halrf_kfree.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/rtl8821c/halhwimg8821c_bb.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/rtl8821c/halhwimg8821c_mac.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/rtl8821c/halhwimg8821c_rf.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/rtl8821c/phydm_hal_api8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/rtl8821c/phydm_regconfig8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/rtl8821c/halrf_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/phydm/halrf/rtl8821c/halrf_iqk_8821c.o CC [M] /home/xbian/build/rtl8821CU/hal/btc/halbtc8821cwifionly.o CC [M] /home/xbian/build/rtl8821CU/hal/btc/halbtc8821c1ant.o CC [M] /home/xbian/build/rtl8821CU/hal/btc/halbtc8821c2ant.o CC [M] /home/xbian/build/rtl8821CU/platform/platform_ops.o CC [M] /home/xbian/build/rtl8821CU/core/rtw_mp.o LD [M] /home/xbian/build/rtl8821CU/8821cu.o Building modules, stage 2. MODPOST 1 modules /bin/sh: 1: scripts/mod/modpost: Exec format error make[2]: [scripts/Makefile.modpost:94: __modpost] Error 126 make[1]: [Makefile:1650: modules] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-5.4.150+' make: *** [Makefile:2217: modules] Error 2

mkreisl commented 2 years ago

I don't understand how you can use such an up-to-date wifi stick on a raspberry pi1 fossil.

But anyway. building a module in this way has never worked for me either, but I haven't had much motivation to find out why.

The best thing is to install the 5.15.50 kernel from the kernel repository, it's there. To do this, you have to add kernel to /etc/apt/sources.list.d/xbian.list as follows:

deb http://apt.xbian.org/ stable main kernel .....

Then sudo apt-get update and then sudo apt-get install xbian-package-kernel

Emgalai commented 2 years ago

I did that, (and had to also run apt-get upgrade to get Kodi working again).

The module still does not build, the error is similar:

...
LD [M] /home/xbian/build/rtl8821CU/8821cu.o
MODPOST /home/xbian/build/rtl8821CU/Module.symvers
/bin/sh: 1: scripts/mod/modpost: Exec format error
make[2]: *** [scripts/Makefile.modpost:134: /home/xbian/build/rtl8821CU/Module.symvers] Error 126
make[1]: *** [Makefile:1786: modules] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-5.15.50+'
make: *** [Makefile:2217: modules] Error 2

I don't understand how you can use such an up-to-date wifi stick on a raspberry pi1 fossil.

I got this wifi stick cheap and did not intent to use it with Pi, but plans changed. And btw, the PC I'm using now is from 2008, still working fine :smile:

mkreisl commented 2 years ago

You have not read correctly!

The idea of the kernel upgrade was not to rebuild the module under the new kernel, since a failure was more than predictable, but to directly use the kernel driver 8821au already included in the new kernel package.

dpkg-deb -c xbian-package-kernel_5.15.50+-1656696998_armhf.deb | grep 8821
-rw-r--r-- root/root   2720760 2022-07-01 17:39 ./lib/modules/5.15.50+/kernel/drivers/net/wireless/8821au.ko

I got this wifi stick cheap and did not intent to use it with Pi, but plans changed. And btw, the PC I'm using now is from 2008, still working fine smile

This may well be true for PC processors, my self-built NAS is still powered by a Core2Duo from 2007. But the Pi1 is now so lame compared to current Pi's that there is no longer an expression for slowness.

Emgalai commented 2 years ago

The 8821au driver seems to not be working with the 8821cu. I loaded it with modprobe and re-inserted the wifi stick but still nothing shows up in xbian-config network configuration or iw dev.

EDIT: I had to run make prepare0 in /lib/modules/5.15.50+/build to build to get modpost working. It seems that it has been this way since 2018.

With working modpost, the module compiles without errors.

mkreisl commented 2 years ago

Good news :)

Does the driver working now?

I must have succumbed to the Realtek naming confusion, the 8821au driver will hardly run with the 8821cu stick. anyway, yesterday I integrated the 8821cu driver into the standard kernel (version 5.15.61).

Of course I can't test it due to lack of hardware

Emgalai commented 2 years ago

Yes. It is working fine, at least for now. Thanks for including it in the standard kernel.