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[Bug 1990127] Re: ubuntu_lttng_smoke_test failed with module build on J-gkeop (error: implicit declaration of function ‘kallsyms_lookup_funcptr’)

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Jürg Häfliger <1990127@xxxxxxxxxxxxxxxxxx>
Date: Thu, 17 Apr 2025 20:25:53 -0000
Reply-to: Bug 1990127 <1990127@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1990127

Title:
  ubuntu_lttng_smoke_test failed with module build on J-gkeop (error:
  implicit declaration of function ‘kallsyms_lookup_funcptr’)

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux-gkeop package in Ubuntu:
  Invalid

Bug description:
  Issue found on J-gkeop 5.15.0-1003.5, and this can be reproduced with
  J-gkeop 5.15.0-1002 as well.

  Build log:
   Running 'cat /var/lib/dkms/lttng-modules/*/build/make.log'
   DKMS make.log for lttng-modules-2.13.1 for kernel 5.15.0-1003-gkeop (x86_64)
   Fri Sep  9 19:35:26 UTC 2022
   make: Entering directory '/usr/src/linux-headers-5.15.0-1003-gkeop'
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-client-discard.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-client-overwrite.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-metadata-client.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-client-mmap-discard.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-client-mmap-overwrite.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-metadata-mmap-client.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-ring-buffer-event-notifier-client.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-counter-client-percpu-32-modular.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-counter-client-percpu-64-modular.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-clock.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/msgpack/msgpack.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-events.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-abi.o
   /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/Kbuild:62: File ./arch/x86/kvm/lapic.h not found. Probe "kvm" x86-specific is disabled. Use full kernel source tree to enable it.
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/tests/probes/lttng-test.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_backend.o
   /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/Kbuild:166: Files ./fs/btrfs/*.h not found. Probe "btrfs" is disabled. Use full kernel source tree to enable it.
   /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/Kbuild:177: Files ./fs/ext4/*.h not found. Probe "ext4" is disabled. Use full kernel source tree to enable it.
   /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/Kbuild:237: CONFIG_KALLSYMS_ALL is disabled, therefore probe "writeback" is disabled. Rebuild your kernel with this configuration option enabled in order to trace this subsystem.
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-sched.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-string-utils.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-probes.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-pid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-procname.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-prio.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-nice.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/tests/clock-plugin/lttng-clock-plugin-test.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vpid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-tid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-irq.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-timer.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vtid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-ppid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vppid.o
     LD [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/tests/lttng-test.o
     LD [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/tests/lttng-clock-plugin-test.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-cpu-id.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-kmem.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-uid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_frontend.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-euid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-suid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-egid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-gid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-module.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-sgid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vuid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-veuid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-power.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vsuid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vgid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vegid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-vsgid.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-interruptible.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-need-reschedule.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-calibrate.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-hostname.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-callstack.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-statedump.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-9p.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-i2c.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-tracker-id.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-bytecode.o
   In file included from /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-callstack.c:55:
   /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-callstack-stackwalk-impl.h: In function ‘init_type_callstack_kernel’:
   /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-callstack-stackwalk-impl.h:51:16: error: implicit declaration of function ‘kallsyms_lookup_funcptr’; did you mean ‘kallsyms_lookup_name’? [-Werror=implicit-function-declaration]
      51 |         func = kallsyms_lookup_funcptr(func_name);
         |                ^~~~~~~~~~~~~~~~~~~~~~~
         |                kallsyms_lookup_name
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-bytecode-interpreter.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_iterator.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-bytecode-specialize.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-kvm.o
   cc1: some warnings being treated as errors
   make[2]: *** [scripts/Makefile.build:297: /var/lib/dkms/lttng-modules/2.13.1/build/src/lttng-context-callstack.o] Error 1
   make[2]: *** Waiting for unfinished jobs....
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-x86-irq-vectors.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_vfs.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_splice.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/ringbuffer/ring_buffer_mmap.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/prio_heap/lttng_prio_heap.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/../wrapper/splice.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/counter/counter.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-x86-exceptions.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-signal.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-block.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-napi.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-skb.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-net.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-sock.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-udp.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-jbd2.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-scsi.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-vmscan.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-compaction.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-printk.o
     LD [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/lttng-lib-ring-buffer.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-rcu.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-sunrpc.o
     LD [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/lib/lttng-counter.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-probe-workqueue.o
     CC [M]  /var/lib/dkms/lttng-modules/2.13.1/build/src/probes/lttng-uprobes.o
   make[1]: *** [scripts/Makefile.build:560: /var/lib/dkms/lttng-modules/2.13.1/build/src] Error 2
   make: *** [Makefile:1884: /var/lib/dkms/lttng-modules/2.13.1/build] Error 2
   make: Leaving directory '/usr/src/linux-headers-5.15.0-1003-gkeop'

  This issue does not exist on other Jammy variants.

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