kexec format error possibly due to wrong version of insmod used (loading custom kernel modules into stock kernel)
Hi,
I just want to share with you my experience on building custom kernel module oneself. I tried rk3188 kernel source with AP6210 driver.
make help
make rk3188_dongle_defconfig
make drivers/net/tun.ko
I used a gentoo stage3 softfloat tarball and simply chrooted into that from the terminal emulator, right on the device. Compiling the kernel worked like a charme and make menuconfig does work fine as well.
However, I made a fundemental mistake in trying to load the resulting module, which yielded "exec format error" or "module version mismatch" or "kernel version too old" all the time. Since insmod does not seem to be in PATH I used
busybox insmod -v tun.ko
The right thing to use is
/system/bin/insmod tun.ko
Once I entered that, no complaining about "exec format error" anymore. It seems the busybox binary in stock fimware is too old (2009) or does not match 3.0.36+ for another reason, I did not look further into that. So again, I think this is a huge pitfall, since there are busybox installers on the market that make it easy to install arbitrary busybox versions and have them symlink insmod to busybox.
If you can't load any modules ALWAYS try loading with /system/bin/insmod before giving up.
Please feel free to share this information any place you might see it fits. There are probably better places for this info.
Thanks,
cmuelle8
__________________________________________________ _____
MK809III with mk802 iv stock rom from rikomagic.com, 1080p and AP6210 WLAN working unscaled
I just want to share with you my experience on building custom kernel module oneself. I tried rk3188 kernel source with AP6210 driver.
make help
make rk3188_dongle_defconfig
make drivers/net/tun.ko
I used a gentoo stage3 softfloat tarball and simply chrooted into that from the terminal emulator, right on the device. Compiling the kernel worked like a charme and make menuconfig does work fine as well.
However, I made a fundemental mistake in trying to load the resulting module, which yielded "exec format error" or "module version mismatch" or "kernel version too old" all the time. Since insmod does not seem to be in PATH I used
busybox insmod -v tun.ko
The right thing to use is
/system/bin/insmod tun.ko
Once I entered that, no complaining about "exec format error" anymore. It seems the busybox binary in stock fimware is too old (2009) or does not match 3.0.36+ for another reason, I did not look further into that. So again, I think this is a huge pitfall, since there are busybox installers on the market that make it easy to install arbitrary busybox versions and have them symlink insmod to busybox.
If you can't load any modules ALWAYS try loading with /system/bin/insmod before giving up.
Please feel free to share this information any place you might see it fits. There are probably better places for this info.
Thanks,
cmuelle8
__________________________________________________ _____
MK809III with mk802 iv stock rom from rikomagic.com, 1080p and AP6210 WLAN working unscaled
Comment