One C file and a few header files.
Canonical isn't very responsive and I posted this question a few places. Sorry about the late reply.
John
-----Original Message----- From: Greg KH greg@kroah.com Sent: Thursday, November 24, 2022 4:07 PM On Thu, Nov 24, 2022 at 01:48:08PM -0500, John Aron wrote:
Hello -
I have an idea of where to begin: our kernel code compiles and works on Red Hat, CentOS, and Fedora. In Ubuntu 20.04, I have an error.
root@form:/home/john/thor-linux/Kernel/ubuntu20.04# make
rmmod: ERROR: Module thor is not currently loaded
make: [Makefile:7: all] Error 1 (ignored)
make[1]: Entering directory '/usr/src/linux-headers-5.4.0-131-generic'
CC [M] /home/john/thor-linux/Kernel/ubuntu22.04/thor.o
/home/john/thor-linux/Kernel/ubuntu22.04/thor.o: warning: objtool: _Controller_process_response_map()+0x1b3: unreachable instruction
Building modules, stage 2.
MODPOST 1 modules
CC [M] /home/john/thor-linux/Kernel/ubuntu22.04/thor.mod.o
LD [M] /home/john/thor-linux/Kernel/ubuntu22.04/thor.ko
make[1]: Leaving directory '/usr/src/linux-headers-5.4.0-131-generic'
make[1]: Entering directory '/usr/src/linux-headers-5.4.0-131-generic'
CLEAN /home/john/thor-linux/Kernel/ubuntu22.04/Module.symvers
make[1]: Leaving directory '/usr/src/linux-headers-5.4.0-131-generic'
#@sudo dmesg -C
#@sudo insmod /usr/local/etc/thor.ko
filename: /usr/local/etc/thor.ko
version: 0.1
description: THOR KMOD
author: Aronetics
license: GPL
srcversion: BC856FA85DB2FEFD38A1B2A
depends:
retpoline: Y
name: thor
vermagic: 5.4.0-131-generic SMP mod_unload modversions
#@sudo dmesg
root@form:/home/john/thor-linux/Kernel/ubuntu20.04# mailto:root@form:/home/john/thor-linux/Kernel/ubuntu20.04#
Every 2.0s: tail -n30 /var/lib/dkms/thor/1.0.1/build/make.log
DKMS make.log for thor-1.0.1 for kernel 5.4.0-131-generic (x86_64)
Thu 24 Nov 2022 01:10:33 PM EST
make: Entering directory '/usr/src/linux-headers-5.4.0-131-generic'
CC [M] /var/lib/dkms/thor/1.0.1/build/thor.o
/var/lib/dkms/thor/1.0.1/build/thor.o: warning: objtool: _Controller_process_response_map()+0x1b3: unreachable instruction
Building modules, stage 2.
MODPOST 1 modules
CC [M] /var/lib/dkms/thor/1.0.1/build/thor.mod.o
LD [M] /var/lib/dkms/thor/1.0.1/build/thor.ko
make: Leaving directory '/usr/src/linux-headers-5.4.0-131-generic'
Is this an error in objtool on Ubuntu within /usr/src/linux-headers-5.4.0-${26-130}/tools/objtool ?
Do you have a pointer to your code anywhere? Do you have .S files in it, or is it all C files?
And did you ask the Canonical developers about this? You should have a support contract you are paying for with them, so why not use that?
thanks,
greg k-h
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