Compiling of branch mainline-5.4+

[pompushko]

Hello

I tried to test new branch on Ubuntu 23.10 with 6.5.0-10-generic x86_64 kernel

user@canbus-dev:~/can-isotp$ make
make -C /lib/modules/6.5.0-10-generic/build M=/home/user/can-isotp modules
make[1]: Entering directory '/usr/src/linux-headers-6.5.0-10-generic'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
  You are using:           gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
  CC [M]  /home/user/can-isotp/net/can/isotp.o
  LD [M]  /home/user/can-isotp/net/can/can-isotp.o
  MODPOST /home/user/can-isotp/Module.symvers
  CC [M]  /home/user/can-isotp/net/can/can-isotp.mod.o
  LD [M]  /home/user/can-isotp/net/can/can-isotp.ko
  BTF [M] /home/user/can-isotp/net/can/can-isotp.ko
make[1]: Leaving directory '/usr/src/linux-headers-6.5.0-10-generic'

user@canbus-dev:~/can-isotp$ sudo make modules_install
make -C /lib/modules/6.5.0-10-generic/build M=/home/user/can-isotp modules_install
make[1]: Entering directory '/usr/src/linux-headers-6.5.0-10-generic'
  INSTALL /lib/modules/6.5.0-10-generic/updates/net/can/can-isotp.ko
  SIGN    /lib/modules/6.5.0-10-generic/updates/net/can/can-isotp.ko
  DEPMOD  /lib/modules/6.5.0-10-generic
Warning: modules_install: missing 'System.map' file. Skipping depmod.
make[1]: Leaving directory '/usr/src/linux-headers-6.5.0-10-generic'

And when I trying to insert new module:

user@canbus-dev:~/can-isotp$ sudo insmod ./net/can/can-isotp.ko
insmod: ERROR: could not insert module ./net/can/can-isotp.ko: Unknown symbol in module

Thank you

[hartkopp]

insmod does not necessarily load depending modules like can.ko

Please run modprobe can before the insmod

[pompushko]

Yeah. Indeed. That helped me.. Thank you!

Also, how can I load that module during system startup? Because for now I should do that:

sudo modprobe -r can_isotp
sudo insmod ./net/can/can-isotp.ko

Only after reloading can-isotp module all start works fine. Thank you.

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# Parameters can be specified after the module name.

can
can_isotp
vcan
can_raw