Messages in this thread | | | 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 | From | "Chen, Rong A" <> | Date | Wed, 6 Apr 2022 19:11:27 +0800 |
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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
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