* OBJTOOL Build error
@ 2022-11-24 18:48 John Aron
2022-11-24 21:06 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: John Aron @ 2022-11-24 18:48 UTC (permalink / raw)
To: stable; +Cc: 'Mark Salter', Mark Lewis, regressions, kernelnewbies
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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 ?
From RHEL 8
[root@profile rhel8]# make
make[1]: Entering directory '/usr/src/kernels/4.18.0-372.26.1.el8_6.x86_64'
CC [M] /home/john/thor-linux/Kernel/rhel8/thor.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/john/thor-linux/Kernel/rhel8/thor.mod.o
LD [M] /home/john/thor-linux/Kernel/rhel8/thor.ko
make[1]: Leaving directory '/usr/src/kernels/4.18.0-372.26.1.el8_6.x86_64'
make[1]: Entering directory '/usr/src/kernels/4.18.0-372.26.1.el8_6.x86_64'
CLEAN /home/john/thor-linux/Kernel/rhel8/.tmp_versions
CLEAN /home/john/thor-linux/Kernel/rhel8/Module.symvers
make[1]: Leaving directory '/usr/src/kernels/4.18.0-372.26.1.el8_6.x86_64'
#@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
rhelversion: 8.6
srcversion: FC77130B3C3461BF8DE20B6
depends:
name: thor
vermagic: 4.18.0-372.26.1.el8_6.x86_64 SMP mod_unload modversions
#@sudo dmesg
[root@profile rhel8]#
John
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: OBJTOOL Build error
2022-11-24 18:48 OBJTOOL Build error John Aron
@ 2022-11-24 21:06 ` Greg KH
2022-11-30 23:36 ` John Aron
0 siblings, 1 reply; 6+ messages in thread
From: Greg KH @ 2022-11-24 21:06 UTC (permalink / raw)
To: John Aron
Cc: 'Mark Salter', Mark Lewis, regressions, stable,
kernelnewbies
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
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread* RE: OBJTOOL Build error
2022-11-24 21:06 ` Greg KH
@ 2022-11-30 23:36 ` John Aron
2022-12-01 5:57 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: John Aron @ 2022-11-30 23:36 UTC (permalink / raw)
To: 'Greg KH'
Cc: 'Mark Salter', 'Mark Lewis', regressions, stable,
kernelnewbies
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
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: OBJTOOL Build error
2022-11-30 23:36 ` John Aron
@ 2022-12-01 5:57 ` Greg KH
2022-12-01 15:52 ` John Aron
0 siblings, 1 reply; 6+ messages in thread
From: Greg KH @ 2022-12-01 5:57 UTC (permalink / raw)
To: John Aron
Cc: 'Mark Salter', 'Mark Lewis', regressions, stable,
kernelnewbies
A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
A: No.
Q: Should I include quotations after my reply?
http://daringfireball.net/2007/07/on_top
On Wed, Nov 30, 2022 at 06:36:19PM -0500, John Aron wrote:
> One C file and a few header files.
Can you provide a link to them so that we can see what might be the
problem? Without that, it's impossible to help, sorry.
thanks,
greg k-h
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: OBJTOOL Build error
2022-12-01 5:57 ` Greg KH
@ 2022-12-01 15:52 ` John Aron
2022-12-01 16:40 ` 'Greg KH'
0 siblings, 1 reply; 6+ messages in thread
From: John Aron @ 2022-12-01 15:52 UTC (permalink / raw)
To: 'Greg KH'
Cc: 'Mark Salter', 'Mark Lewis', regressions, stable,
kernelnewbies
[-- Attachment #1.1: Type: text/plain, Size: 2654 bytes --]
Oh Dear -
This wiki page brings my mind back to a hacker listserv conversation about
semantics of discourse and Kevin Mitnick isms. Please accept my inline or
outline apologies.
John
-----Original Message-----
From: Greg KH <gregkh@linuxfoundation.org>
Sent: Thursday, December 1, 2022 12:58 AM
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
A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
A: No.
Q: Should I include quotations after my reply?
http://daringfireball.net/2007/07/on_top
On Wed, Nov 30, 2022 at 06:36:19PM -0500, John Aron wrote:
> One C file and a few header files.
Can you provide a link to them so that we can see what might be the problem?
Without that, it's impossible to help, sorry.
--
The repo is in a private repo online, the entry is:
static int __init kernel_module_start(void)
{
Configuration* configuration = NULL;
// enable the logger
Logger_set_enabled(true);
log_info("Starting Aronetics kernel module (configuration file name:
\"%s\")...\n", _FILE_NAME_CONFIGURATION);
controller = Controller_new(_FILE_NAME_CONFIGURATION);
if (controller != NULL)
{
configuration = Controller_get_configuration(controller);
String_dump_and_delete(Configuration_to_string(configuration));
log_verbose(" Initializing mutex...\n");
mutex_init(&controller_mutex);
switch (Configuration_get_execution_mode(configuration))
{
// case TestExecutionMode:
// run_tests();
// break;
default:
log_verbose(" Initializing controller...\n");
if (Controller_initialize(controller) == 0)
{
log_verbose(" Setting up timer...\n");
timer_setup(&controller_timer, on_timer, 0);
log_verbose(" Initalizing timer...\n");
mod_timer(&controller_timer, jiffies +
msecs_to_jiffies(DELAY_ITERATION));
log_verbose("Aronetics kernel module started\n");
}
else
{
log_error("Initialization failed.");
}
break;
}
}
return 0;
}
thanks,
greg k-h
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_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: OBJTOOL Build error
2022-12-01 15:52 ` John Aron
@ 2022-12-01 16:40 ` 'Greg KH'
0 siblings, 0 replies; 6+ messages in thread
From: 'Greg KH' @ 2022-12-01 16:40 UTC (permalink / raw)
To: John Aron
Cc: 'Mark Salter', 'Mark Lewis', regressions, stable,
kernelnewbies
On Thu, Dec 01, 2022 at 10:52:16AM -0500, John Aron wrote:
> On Wed, Nov 30, 2022 at 06:36:19PM -0500, John Aron wrote:
> > One C file and a few header files.
>
> Can you provide a link to them so that we can see what might be the problem?
> Without that, it's impossible to help, sorry.
> --
> The repo is in a private repo online, the entry is:
> static int __init kernel_module_start(void)
<snip>
Without the full source, it's pretty impossible to help, sorry.
thanks,
greg k-h
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 6+ messages in thread
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Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2022-11-24 18:48 OBJTOOL Build error John Aron
2022-11-24 21:06 ` Greg KH
2022-11-30 23:36 ` John Aron
2022-12-01 5:57 ` Greg KH
2022-12-01 15:52 ` John Aron
2022-12-01 16:40 ` 'Greg KH'
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