Re: [ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 136/158] WARNING: modpost: vmlinux.o(.text+0x28d3a): Section mismatch in reference from the function cpu_in_idle() to the variable .init.text:.LVL79

From: Paul E. McKenney
Date: Sun Apr 03 2022 - 23:42:01 EST

Next message: Anup Patel: "Re: [PATCH RESEND] Documentation: kvm: Add missing line break in api.rst"
Previous message: Anup Patel: "Re: [PATCH -next] cpuidle: riscv: support non-SMP config"
In reply to: kernel test robot: "[ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 136/158] WARNING: modpost: vmlinux.o(.text+0x28d3a): Section mismatch in reference from the function cpu_in_idle() to the variable .init.text:.LVL79"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On Mon, Apr 04, 2022 at 08:18:59AM +0800, kernel test robot wrote:
> tree: https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a
> head: d9f3e7d671416fdf5b61f094765754269b652db0
> commit: 4a8d065a72d07894b2d9f976ffa9ee4ab1f8abb4 [136/158] refscale: Allow refscale without RCU Tasks
> config: riscv-randconfig-r002-20220403 (https://download.01.org/0day-ci/archive/20220404/202204040803.eMjcdkZh-lkp@xxxxxxxxx/config)
> compiler: riscv32-linux-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://github.com/ammarfaizi2/linux-block/commit/4a8d065a72d07894b2d9f976ffa9ee4ab1f8abb4
> git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
> git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/fastexp.2022.04.01a
> git checkout 4a8d065a72d07894b2d9f976ffa9ee4ab1f8abb4
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
>
> >> WARNING: modpost: vmlinux.o(.text+0x28d3a): Section mismatch in reference from the function cpu_in_idle() to the variable .init.text:.LVL79
> The function cpu_in_idle() references
> the variable __init .LVL79.
> This is often because cpu_in_idle lacks a __init
> annotation or the annotation of .LVL79 is wrong.

This added information is much nicer, thank you!

But I cannot make cpu_in_idle() as __init because it is invoked at
runtime by nmi_cpu_backtrace().

Also, I do not see any .LVL79. Might this be a compiler temporary?

And I cannot see how this patch could have affected cpu_in_idle().

Might this instead be a false positive caused by the fact that
cpu_in_idle() references __cpuidle_text_start and __cpuidle_text_end,
both of which are defined in vmlinux.lds.h?

Thanx, Paul

> --
> >> WARNING: modpost: vmlinux.o(.text+0x81fe66): Section mismatch in reference from the function pccard_sysfs_remove_socket() to the variable .init.text:.LVL163
> The function pccard_sysfs_remove_socket() references
> the variable __init .LVL163.
> This is often because pccard_sysfs_remove_socket lacks a __init
> annotation or the annotation of .LVL163 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0x967e84): Section mismatch in reference from the function rproc_report_crash() to the variable .init.text:.L0
> The function rproc_report_crash() references
> the variable __init .L0 .
> This is often because rproc_report_crash lacks a __init
> annotation or the annotation of .L0 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0x97395c): Section mismatch in reference from the function sdw_debugfs_exit() to the variable .init.text:.L0
> The function sdw_debugfs_exit() references
> the variable __init .L0 .
> This is often because sdw_debugfs_exit lacks a __init
> annotation or the annotation of .L0 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0xa3373a): Section mismatch in reference from the function snd_pcm_period_elapsed() to the variable .init.text:.L0
> The function snd_pcm_period_elapsed() references
> the variable __init .L0 .
> This is often because snd_pcm_period_elapsed lacks a __init
> annotation or the annotation of .L0 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0xb54e76): Section mismatch in reference from the function br_vlan_tunnel_info() to the variable .init.text:.L0
> The function br_vlan_tunnel_info() references
> the variable __init .L0 .
> This is often because br_vlan_tunnel_info lacks a __init
> annotation or the annotation of .L0 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0xbd1d50): Section mismatch in reference from the function batadv_v_mesh_free() to the variable .init.text:.L0
> The function batadv_v_mesh_free() references
> the variable __init .L0 .
> This is often because batadv_v_mesh_free lacks a __init
> annotation or the annotation of .L0 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0xd24c8): Section mismatch in reference from the function wb_wakeup_delayed() to the variable .exit.text:.L0
> The function wb_wakeup_delayed() references a variable in an exit section.
> Often the variable .L0 has valid usage outside the exit section
> and the fix is to remove the __exit annotation of .L0 .
> --
> >> WARNING: modpost: vmlinux.o(.text+0x378a4a): Section mismatch in reference from the function drm_mode_equal() to the variable .init.text:.LBB506
> The function drm_mode_equal() references
> the variable __init .LBB506.
> This is often because drm_mode_equal lacks a __init
> annotation or the annotation of .LBB506 is wrong.
> --
> >> WARNING: modpost: vmlinux.o(.text+0x378a54): Section mismatch in reference from the function drm_mode_equal_no_clocks() to the variable .init.text:.LBB506
> The function drm_mode_equal_no_clocks() references
> the variable __init .LBB506.
> This is often because drm_mode_equal_no_clocks lacks a __init
> annotation or the annotation of .LBB506 is wrong.
>
> Note: the below error/warnings can be found in parent commit:
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
> << WARNING: modpost: vmlinux.o(.text+0x17f74): Section mismatch in reference from the function wq_watchdog_touch() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x2ad3a): Section mismatch in reference from the function calc_load_nohz_stop() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x1816f8): Section mismatch in reference from the function autofs_clean_ino() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x26987c): Section mismatch in reference from the function zstd_find_frame_compressed_size() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x477170): Section mismatch in reference from the function radeon_audio_init() to the variable .init.text:.LVL153
> << WARNING: modpost: vmlinux.o(.text+0x6a44d4): Section mismatch in reference from the function gf100_gr_wait_idle() to the variable .init.text:.LBB317
> << WARNING: modpost: vmlinux.o(.text+0x96a4ee): Section mismatch in reference from the function rpmsg_create_channel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a502): Section mismatch in reference from the function rpmsg_release_channel() to the variable .init.text:.L6
> << WARNING: modpost: vmlinux.o(.text+0x96a51a): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L13
> << WARNING: modpost: vmlinux.o(.text+0x96a660): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L25
>
> --
> 0-DAY CI Kernel Test Service
> https://01.org/lkp

Next message: Anup Patel: "Re: [PATCH RESEND] Documentation: kvm: Add missing line break in api.rst"
Previous message: Anup Patel: "Re: [PATCH -next] cpuidle: riscv: support non-SMP config"
In reply to: kernel test robot: "[ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 136/158] WARNING: modpost: vmlinux.o(.text+0x28d3a): Section mismatch in reference from the function cpu_in_idle() to the variable .init.text:.LVL79"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]