Opened 4 years ago

Closed 4 years ago

#14452 closed defect (no_response)

Loading batman-adv kernel module report "Unknown symbol crc32c" and others

Reported by: pere@… Owned by: developers
Priority: normal Milestone: Bugs Paradise
Component: packages Version: Trunk
Keywords: Cc:


Hi. I followed the instructions on and downloaded
for my TP-Link MR3040 box, and was able to get openwrt activated by
uploading it in the default firmware web interface.

But when I try to install kmod-batman-adv using 'opkg install
kmod-batman-adv', the batman-adv kernel module fail to load and dmesg
show this message:

[ 2459.870000] batman_adv: Unknown symbol crc16_table (err 0)
[ 2459.870000] batman_adv: Unknown symbol crc16 (err 0)
[ 2459.880000] batman_adv: Unknown symbol crc32c (err 0)

Anyone know what is wrong? Some version skew between kernel modules?
What is the best way to convert the MR3040 to a batman-adv mesh node?

'uname -a' report this version:

Linux OpenWrt 3.10.18 #1 Fri Nov 8 22:13:29 PST 2013 mips GNU/Linux

Attachments (0)

Change History (4)

comment:1 Changed 4 years ago by pere@…

I continued testing, and finally was able to get the batman-adv kernel module loaded by first loading crc16 manually. In other words, this worked:

root@OpenWrt:~# modprobe crc16
root@OpenWrt:~# modprobe batman_adv

Is the batman-adv kernel module missing a dependency?

comment:2 Changed 4 years ago by anonymous

I confirm this error in the current trunc:
[ 322.880000] batman_adv: Unknown symbol crc16 (err 0)
[ 322.880000] batman_adv: Unknown symbol crc32c (err 0)

comment:3 Changed 4 years ago by bittorf@…

this problem is fixed since a long time:

from which repo you are download or building batman-adv?
which version has batman-adv?

comment:4 Changed 4 years ago by nbd

  • Resolution set to no_response
  • Status changed from new to closed

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