Messages in this thread | | | Date | Wed, 6 Apr 2022 07:44:19 -0700 | From | "Paul E. McKenney" <> | Subject | 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 |
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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
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