From: Greg KH <greg@kroah.com>
To: John Aron <john@aronetics.com>
Cc: 'Mark Salter' <mark.salter@canonical.com>,
Mark Lewis <mark.lewis@canonical.com>,
regressions@lists.linux.dev, stable@vger.kernel.org,
kernelnewbies@kernelnewbies.org
Subject: Re: OBJTOOL Build error
Date: Thu, 24 Nov 2022 22:06:55 +0100 [thread overview]
Message-ID: <Y3/c73nZVdHCBdZo@kroah.com> (raw)
In-Reply-To: <041601d90035$4f738de0$ee5aa9a0$@aronetics.com>
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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Kernelnewbies@kernelnewbies.org
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WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <greg@kroah.com>
To: John Aron <john@aronetics.com>
Cc: stable@vger.kernel.org, 'Mark Salter' <mark.salter@canonical.com>,
Mark Lewis <mark.lewis@canonical.com>,
regressions@lists.linux.dev, kernelnewbies@kernelnewbies.org
Subject: Re: OBJTOOL Build error
Date: Thu, 24 Nov 2022 22:06:55 +0100 [thread overview]
Message-ID: <Y3/c73nZVdHCBdZo@kroah.com> (raw)
In-Reply-To: <041601d90035$4f738de0$ee5aa9a0$@aronetics.com>
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
next prev parent reply other threads:[~2022-11-24 21:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-24 18:48 OBJTOOL Build error John Aron
2022-11-24 18:48 ` John Aron
2022-11-24 21:06 ` Greg KH [this message]
2022-11-24 21:06 ` Greg KH
2022-11-30 23:36 ` John Aron
2022-11-30 23:36 ` John Aron
2022-12-01 5:57 ` Greg KH
2022-12-01 5:57 ` Greg KH
2022-12-01 15:52 ` John Aron
2022-12-01 15:52 ` John Aron
2022-12-01 16:40 ` 'Greg KH'
2022-12-01 16:40 ` 'Greg KH'
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