lttng-dev.lists.lttng.org archive mirror
 help / color / mirror / Atom feed
From: Lukasz Domowy via lttng-dev <lttng-dev@lists.lttng.org>
To: lttng-dev@lists.lttng.org
Subject: lttng_lib_ring_buffer: section 24 reloc 0 sym '': relocation 42 out of range
Date: Thu, 28 May 2020 13:51:12 +0200	[thread overview]
Message-ID: <CAGK+5gW_7Lo3O4oYW8jVJqDiUby6xoRyL3-JJQDQ8VYLG7WPAg@mail.gmail.com> (raw)

Hello,

First - of all: thank you very much for efforts to develop and
maintain LTTng. It's very useful tool!
I used it so far on PowerPC targets and now I try to run it on ARM:
Cyclone5 ARMv7 CPU.

When trying to run LTTng I get:

# lttng list --kernel
[ 2012.822578] lttng_lib_ring_buffer: section 24 reloc 0 sym '':
relocation 42 out of range (0x7f05827c -> 0xc0cd7358)
Error: Unable to list kernel events: Kernel tracer not available
Error: Command error

Do you have any hints how to fix it?

I found https://bugs.lttng.org/issues/1173 but enabling
CONFIG_ARM_MODULE_PLTS did not help.

I use LTTng from Yocto 3.0.2 with custom kernel 4.14.134-rt63-rt:

# lttng -V
lttng (LTTng Trace Control) 2.10.7 - KeKriek

All options recommended from documentation are enabled:
root@cyclone5:~# zcat /proc/config.gz | grep -i modules
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MODULES=y
CONFIG_MODULES_TREE_LOOKUP=y
# Xtables combined modules
# User Modules And Translation Layers
root@cyclone5:~# zcat /proc/config.gz | grep -i kallsyms
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ABSOLUTE_PERCPU is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
root@cyclone5:~# zcat /proc/config.gz | grep -i high_res_timers
CONFIG_HIGH_RES_TIMERS=y
root@cyclone5:~# zcat /proc/config.gz | grep -i tracepoints
CONFIG_TRACEPOINTS=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y

Thank you in advance!

Best regards,
Lukasz

WARNING: multiple messages have this Message-ID (diff)
From: Lukasz Domowy via lttng-dev <lttng-dev@lists.lttng.org>
To: lttng-dev@lists.lttng.org
Subject: [lttng-dev] lttng_lib_ring_buffer: section 24 reloc 0 sym '': relocation 42 out of range
Date: Thu, 28 May 2020 13:51:12 +0200	[thread overview]
Message-ID: <CAGK+5gW_7Lo3O4oYW8jVJqDiUby6xoRyL3-JJQDQ8VYLG7WPAg@mail.gmail.com> (raw)
Message-ID: <20200528115112.rs2w-3IcngK11uZEORE4Cc2gFQ1fDOciAMgx9K86tgE@z> (raw)

Hello,

First - of all: thank you very much for efforts to develop and
maintain LTTng. It's very useful tool!
I used it so far on PowerPC targets and now I try to run it on ARM:
Cyclone5 ARMv7 CPU.

When trying to run LTTng I get:

# lttng list --kernel
[ 2012.822578] lttng_lib_ring_buffer: section 24 reloc 0 sym '':
relocation 42 out of range (0x7f05827c -> 0xc0cd7358)
Error: Unable to list kernel events: Kernel tracer not available
Error: Command error

Do you have any hints how to fix it?

I found https://bugs.lttng.org/issues/1173 but enabling
CONFIG_ARM_MODULE_PLTS did not help.

I use LTTng from Yocto 3.0.2 with custom kernel 4.14.134-rt63-rt:

# lttng -V
lttng (LTTng Trace Control) 2.10.7 - KeKriek

All options recommended from documentation are enabled:
root@cyclone5:~# zcat /proc/config.gz | grep -i modules
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MODULES=y
CONFIG_MODULES_TREE_LOOKUP=y
# Xtables combined modules
# User Modules And Translation Layers
root@cyclone5:~# zcat /proc/config.gz | grep -i kallsyms
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ABSOLUTE_PERCPU is not set
CONFIG_KALLSYMS_BASE_RELATIVE=y
root@cyclone5:~# zcat /proc/config.gz | grep -i high_res_timers
CONFIG_HIGH_RES_TIMERS=y
root@cyclone5:~# zcat /proc/config.gz | grep -i tracepoints
CONFIG_TRACEPOINTS=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y

Thank you in advance!

Best regards,
Lukasz
_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

             reply	other threads:[~2020-05-28 11:51 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-28 11:51 Lukasz Domowy via lttng-dev [this message]
2020-05-28 11:51 ` [lttng-dev] lttng_lib_ring_buffer: section 24 reloc 0 sym '': relocation 42 out of range Lukasz Domowy via lttng-dev
2020-05-28 13:31 ` Jonathan Rajotte-Julien via lttng-dev
2020-05-28 13:31   ` [lttng-dev] " Jonathan Rajotte-Julien via lttng-dev
2020-05-28 13:31 ` Mathieu Desnoyers via lttng-dev
2020-05-28 13:31   ` [lttng-dev] " Mathieu Desnoyers via lttng-dev

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAGK+5gW_7Lo3O4oYW8jVJqDiUby6xoRyL3-JJQDQ8VYLG7WPAg@mail.gmail.com \
    --to=lttng-dev@lists.lttng.org \
    --cc=lukasz.odw39@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).