[ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0

[ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0

[kernel test robot]

tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a
head:   d9f3e7d671416fdf5b61f094765754269b652db0
commit: c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba [109/158] rcu: Add polled expedited grace-period primitives
config: riscv-randconfig-r002-20220403 (https://download.01.org/0day-ci/archive/20220404/202204040012.4Fu9uBps-lkp@intel.com/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/c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
        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 c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
        # 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@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0
The function ieee802154_iface_init() references
the variable __init .L0 .
This is often because ieee802154_iface_init lacks a __init
annotation or the annotation of .L0 is wrong.

Note: the below error/warnings can be found in parent commit:
<< WARNING: modpost: vmlinux.o(.text+0x432e6): Section mismatch in reference from the function dma_get_required_mask() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0xe35ca): Section mismatch in reference from the function mlock_page_drain() to the variable .init.text:.LVL125
<< WARNING: modpost: vmlinux.o(.text+0x96a46e): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a5b4): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a5c0): Section mismatch in reference from the function rpmsg_send() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a5d4): Section mismatch in reference from the function rpmsg_sendto() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a5e8): Section mismatch in reference from the function rpmsg_send_offchannel() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a5fc): Section mismatch in reference from the function rpmsg_trysend() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a610): Section mismatch in reference from the function rpmsg_trysendto() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x96a624): Section mismatch in reference from the function rpmsg_poll() to the variable .init.text:.L0

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

Re: [ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0

[Paul E. McKenney]

On Mon, Apr 04, 2022 at 12:20:22AM +0800, kernel test robot wrote:
> tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a
> head:   d9f3e7d671416fdf5b61f094765754269b652db0
> commit: c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba [109/158] rcu: Add polled expedited grace-period primitives
> config: riscv-randconfig-r002-20220403 (https://download.01.org/0day-ci/archive/20220404/202204040012.4Fu9uBps-lkp@intel.com/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/c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
>         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 c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
>         # 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@intel.com>
> 
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
> 
> >> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0
> The function ieee802154_iface_init() references
> the variable __init .L0 .
> This is often because ieee802154_iface_init lacks a __init
> annotation or the annotation of .L0 is wrong.
> 
> Note: the below error/warnings can be found in parent commit:
> << WARNING: modpost: vmlinux.o(.text+0x432e6): Section mismatch in reference from the function dma_get_required_mask() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0xe35ca): Section mismatch in reference from the function mlock_page_drain() to the variable .init.text:.LVL125
> << WARNING: modpost: vmlinux.o(.text+0x96a46e): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a5b4): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a5c0): Section mismatch in reference from the function rpmsg_send() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a5d4): Section mismatch in reference from the function rpmsg_sendto() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a5e8): Section mismatch in reference from the function rpmsg_send_offchannel() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a5fc): Section mismatch in reference from the function rpmsg_trysend() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a610): Section mismatch in reference from the function rpmsg_trysendto() to the variable .init.text:.L0
> << WARNING: modpost: vmlinux.o(.text+0x96a624): Section mismatch in reference from the function rpmsg_poll() to the variable .init.text:.L0

I freely confess that I have no idea what any of these error messages
are trying to tell me.  What is ".init.txt.L0"?  How did my patch affect
ieee802154_iface_init() or the register_netdevice_notifier() function
that it invokes?  For that matter, how did my patch cause an access to
be made to __init data from a non-__init function?

							Thanx, Paul

Re: [kbuild-all] Re: [ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0

[Chen, Rong A]

On 4/4/2022 2:30 AM, Paul E. McKenney wrote:
> On Mon, Apr 04, 2022 at 12:20:22AM +0800, kernel test robot wrote:
>> tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a
>> head:   d9f3e7d671416fdf5b61f094765754269b652db0
>> commit: c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba [109/158] rcu: Add polled expedited grace-period primitives
>> config: 	 (https://download.01.org/0day-ci/archive/20220404/202204040012.4Fu9uBps-lkp@intel.com/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/c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
>>          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 c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
>>          # 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@intel.com>
>>
>> All warnings (new ones prefixed by >>, old ones prefixed by <<):
>>
>>>> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0
>> The function ieee802154_iface_init() references
>> the variable __init .L0 .
>> This is often because ieee802154_iface_init lacks a __init
>> annotation or the annotation of .L0 is wrong.
>>
>> Note: the below error/warnings can be found in parent commit:
>> << WARNING: modpost: vmlinux.o(.text+0x432e6): Section mismatch in reference from the function dma_get_required_mask() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0xe35ca): Section mismatch in reference from the function mlock_page_drain() to the variable .init.text:.LVL125
>> << WARNING: modpost: vmlinux.o(.text+0x96a46e): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a5b4): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a5c0): Section mismatch in reference from the function rpmsg_send() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a5d4): Section mismatch in reference from the function rpmsg_sendto() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a5e8): Section mismatch in reference from the function rpmsg_send_offchannel() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a5fc): Section mismatch in reference from the function rpmsg_trysend() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a610): Section mismatch in reference from the function rpmsg_trysendto() to the variable .init.text:.L0
>> << WARNING: modpost: vmlinux.o(.text+0x96a624): Section mismatch in reference from the function rpmsg_poll() to the variable .init.text:.L0
> 
> I freely confess that I have no idea what any of these error messages
> are trying to tell me.  What is ".init.txt.L0"?  How did my patch affect
> ieee802154_iface_init() or the register_netdevice_notifier() function
> that it invokes?  For that matter, how did my patch cause an access to
> be made to __init data from a non-__init function?
> 
> 							Thanx, Paul

Hi Paul,

Sorry for the inconvenience, only below warning was triggered by the commit:

 >> All warnings (new ones prefixed by >>, old ones prefixed by <<):
 >>
 >>>> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in 
reference from the function ieee802154_iface_init() to the variable 
.init.text:.L0

the others are for reference only:
 >> Note: the below error/warnings can be found in parent commit

The problem has existed for some time before your patch, we'll add it to
ignore list to avoid noise.

Best Regards,
Rong Chen

Re: [kbuild-all] Re: [ammarfaizi2-block:paulmck/linux-rcu/fastexp.2022.04.01a 109/158] WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0

[Paul E. McKenney]

On Wed, Apr 06, 2022 at 07:11:27PM +0800, Chen, Rong A wrote:
> 
> 
> On 4/4/2022 2:30 AM, Paul E. McKenney wrote:
> > On Mon, Apr 04, 2022 at 12:20:22AM +0800, kernel test robot wrote:
> > > tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/fastexp.2022.04.01a
> > > head:   d9f3e7d671416fdf5b61f094765754269b652db0
> > > commit: c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba [109/158] rcu: Add polled expedited grace-period primitives
> > > config: 	 (https://download.01.org/0day-ci/archive/20220404/202204040012.4Fu9uBps-lkp@intel.com/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/c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
> > >          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 c1468fd1496363a0b2b2cb89e8ec2ba5e1dce9ba
> > >          # 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@intel.com>
> > > 
> > > All warnings (new ones prefixed by >>, old ones prefixed by <<):
> > > 
> > > > > WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in reference from the function ieee802154_iface_init() to the variable .init.text:.L0
> > > The function ieee802154_iface_init() references
> > > the variable __init .L0 .
> > > This is often because ieee802154_iface_init lacks a __init
> > > annotation or the annotation of .L0 is wrong.
> > > 
> > > Note: the below error/warnings can be found in parent commit:
> > > << WARNING: modpost: vmlinux.o(.text+0x432e6): Section mismatch in reference from the function dma_get_required_mask() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0xe35ca): Section mismatch in reference from the function mlock_page_drain() to the variable .init.text:.LVL125
> > > << WARNING: modpost: vmlinux.o(.text+0x96a46e): Section mismatch in reference from the function rpmsg_create_ept() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a5b4): Section mismatch in reference from the function rpmsg_destroy_ept() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a5c0): Section mismatch in reference from the function rpmsg_send() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a5d4): Section mismatch in reference from the function rpmsg_sendto() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a5e8): Section mismatch in reference from the function rpmsg_send_offchannel() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a5fc): Section mismatch in reference from the function rpmsg_trysend() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a610): Section mismatch in reference from the function rpmsg_trysendto() to the variable .init.text:.L0
> > > << WARNING: modpost: vmlinux.o(.text+0x96a624): Section mismatch in reference from the function rpmsg_poll() to the variable .init.text:.L0
> > 
> > I freely confess that I have no idea what any of these error messages
> > are trying to tell me.  What is ".init.txt.L0"?  How did my patch affect
> > ieee802154_iface_init() or the register_netdevice_notifier() function
> > that it invokes?  For that matter, how did my patch cause an access to
> > be made to __init data from a non-__init function?
> > 
> > 							Thanx, Paul
> 
> Hi Paul,
> 
> Sorry for the inconvenience, only below warning was triggered by the commit:
> 
> >> All warnings (new ones prefixed by >>, old ones prefixed by <<):
> >>
> >>>> WARNING: modpost: vmlinux.o(.text+0xbcac06): Section mismatch in
> reference from the function ieee802154_iface_init() to the variable
> .init.text:.L0
> 
> the others are for reference only:
> >> Note: the below error/warnings can be found in parent commit
> 
> The problem has existed for some time before your patch, we'll add it to
> ignore list to avoid noise.

Thank you for getting back to me.

Very well, I will ignore subsequent errors that look like this.  ;-)

							Thanx, Paul