* WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init()
@ 2021-02-24 14:20 ` kernel test robot
0 siblings, 0 replies; 10+ messages in thread
From: kernel test robot @ 2021-02-24 14:20 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 1854 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194
commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework arch_local_irq_restore() to not use popf
date: 2 weeks ago
config: x86_64-randconfig-a005-20210223 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f14a14dd2564703db02f80c00db8ae492b594f77)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
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+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init()
The function stop_machine() references
the function __init intel_rng_hw_init().
This is often because stop_machine lacks a __init
annotation or the annotation of intel_rng_hw_init is wrong.
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 39032 bytes --]
^ permalink raw reply [flat|nested] 10+ messages in thread* WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() @ 2021-02-24 14:20 ` kernel test robot 0 siblings, 0 replies; 10+ messages in thread From: kernel test robot @ 2021-02-24 14:20 UTC (permalink / raw) To: Juergen Gross Cc: kbuild-all, clang-built-linux, linux-kernel, Borislav Petkov [-- Attachment #1: Type: text/plain, Size: 1820 bytes --] tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework arch_local_irq_restore() to not use popf date: 2 weeks ago config: x86_64-randconfig-a005-20210223 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f14a14dd2564703db02f80c00db8ae492b594f77) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() The function stop_machine() references the function __init intel_rng_hw_init(). This is often because stop_machine lacks a __init annotation or the annotation of intel_rng_hw_init is wrong. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org [-- Attachment #2: .config.gz --] [-- Type: application/gzip, Size: 39032 bytes --] ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() 2021-02-24 14:20 ` kernel test robot @ 2021-02-24 14:26 ` Jürgen Groß -1 siblings, 0 replies; 10+ messages in thread From: Jürgen Groß @ 2021-02-24 14:26 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 1951 bytes --] On 24.02.21 15:20, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework arch_local_irq_restore() to not use popf > date: 2 weeks ago > config: x86_64-randconfig-a005-20210223 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f14a14dd2564703db02f80c00db8ae492b594f77) > 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 > # install x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > 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+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() > The function stop_machine() references > the function __init intel_rng_hw_init(). > This is often because stop_machine lacks a __init > annotation or the annotation of intel_rng_hw_init is wrong. I'd be very interested to know how the identified patch would be able to have this effect. Juergen [-- Attachment #2: OpenPGP_0xB0DE9DD628BF132F.asc --] [-- Type: application/pgp-keys, Size: 3091 bytes --] [-- Attachment #3: OpenPGP_signature.sig --] [-- Type: application/pgp-signature, Size: 495 bytes --] ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() @ 2021-02-24 14:26 ` Jürgen Groß 0 siblings, 0 replies; 10+ messages in thread From: Jürgen Groß @ 2021-02-24 14:26 UTC (permalink / raw) To: kernel test robot Cc: kbuild-all, clang-built-linux, linux-kernel, Borislav Petkov [-- Attachment #1.1.1: Type: text/plain, Size: 1951 bytes --] On 24.02.21 15:20, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework arch_local_irq_restore() to not use popf > date: 2 weeks ago > config: x86_64-randconfig-a005-20210223 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f14a14dd2564703db02f80c00db8ae492b594f77) > 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 > # install x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > 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+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() > The function stop_machine() references > the function __init intel_rng_hw_init(). > This is often because stop_machine lacks a __init > annotation or the annotation of intel_rng_hw_init is wrong. I'd be very interested to know how the identified patch would be able to have this effect. Juergen [-- Attachment #1.1.2: OpenPGP_0xB0DE9DD628BF132F.asc --] [-- Type: application/pgp-keys, Size: 3135 bytes --] [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 495 bytes --] ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() 2021-02-24 14:26 ` Jürgen Groß @ 2021-02-25 8:17 ` Rong Chen -1 siblings, 0 replies; 10+ messages in thread From: Rong Chen @ 2021-02-25 8:17 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 2313 bytes --] On 2/24/21 10:26 PM, Jürgen Groß wrote: > On 24.02.21 15:20, kernel test robot wrote: >> tree: >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> master >> head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 >> commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework >> arch_local_irq_restore() to not use popf >> date: 2 weeks ago >> config: x86_64-randconfig-a005-20210223 (attached as .config) >> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project >> f14a14dd2564703db02f80c00db8ae492b594f77) >> 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 >> # install x86_64 cross compiling tool for clang build >> # apt-get install binutils-x86-64-linux-gnu >> # >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 >> git remote add linus >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> git fetch --no-tags linus master >> git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross >> ARCH=x86_64 >> >> 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+0x1a8edb8): Section mismatch in >>>> reference from the function stop_machine() to the function >>>> .init.text:intel_rng_hw_init() >> The function stop_machine() references >> the function __init intel_rng_hw_init(). >> This is often because stop_machine lacks a __init >> annotation or the annotation of intel_rng_hw_init is wrong. > > I'd be very interested to know how the identified patch would be able to > have this effect. Hi Clang Team, The problem is found by the latest clang, and I can't reproduce it with clang-11, could you take a look? Best Regards, Rong Chen ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [kbuild-all] Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() @ 2021-02-25 8:17 ` Rong Chen 0 siblings, 0 replies; 10+ messages in thread From: Rong Chen @ 2021-02-25 8:17 UTC (permalink / raw) To: Jürgen Groß, kernel test robot Cc: kbuild-all, clang-built-linux, linux-kernel, Borislav Petkov, Nick Desaulniers On 2/24/21 10:26 PM, Jürgen Groß wrote: > On 24.02.21 15:20, kernel test robot wrote: >> tree: >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> master >> head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 >> commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework >> arch_local_irq_restore() to not use popf >> date: 2 weeks ago >> config: x86_64-randconfig-a005-20210223 (attached as .config) >> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project >> f14a14dd2564703db02f80c00db8ae492b594f77) >> 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 >> # install x86_64 cross compiling tool for clang build >> # apt-get install binutils-x86-64-linux-gnu >> # >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 >> git remote add linus >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> git fetch --no-tags linus master >> git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross >> ARCH=x86_64 >> >> 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+0x1a8edb8): Section mismatch in >>>> reference from the function stop_machine() to the function >>>> .init.text:intel_rng_hw_init() >> The function stop_machine() references >> the function __init intel_rng_hw_init(). >> This is often because stop_machine lacks a __init >> annotation or the annotation of intel_rng_hw_init is wrong. > > I'd be very interested to know how the identified patch would be able to > have this effect. Hi Clang Team, The problem is found by the latest clang, and I can't reproduce it with clang-11, could you take a look? Best Regards, Rong Chen ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() 2021-02-25 8:17 ` [kbuild-all] " Rong Chen @ 2021-02-25 18:34 ` Nathan Chancellor -1 siblings, 0 replies; 10+ messages in thread From: Nathan Chancellor @ 2021-02-25 18:34 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 2929 bytes --] On Thu, Feb 25, 2021 at 04:17:21PM +0800, Rong Chen wrote: > > > On 2/24/21 10:26 PM, Jürgen Groß wrote: > > On 24.02.21 15:20, kernel test robot wrote: > > > tree: > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > master > > > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > > > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework > > > arch_local_irq_restore() to not use popf > > > date: 2 weeks ago > > > config: x86_64-randconfig-a005-20210223 (attached as .config) > > > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project > > > f14a14dd2564703db02f80c00db8ae492b594f77) > > > 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 > > > # install x86_64 cross compiling tool for clang build > > > # apt-get install binutils-x86-64-linux-gnu > > > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > git remote add linus > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > git fetch --no-tags linus master > > > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > # save the attached .config to linux build tree > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross > > > ARCH=x86_64 > > > > > > 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+0x1a8edb8): Section > > > > > mismatch in reference from the function stop_machine() to > > > > > the function .init.text:intel_rng_hw_init() > > > The function stop_machine() references > > > the function __init intel_rng_hw_init(). > > > This is often because stop_machine lacks a __init > > > annotation or the annotation of intel_rng_hw_init is wrong. > > > > I'd be very interested to know how the identified patch would be able to > > have this effect. > > Hi Clang Team, > > The problem is found by the latest clang, and I can't reproduce it with > clang-11, > could you take a look? > > Best Regards, > Rong Chen Hi Rong, Known issue. LLVM 13 cut over to the new pass manager (NPM) which has changed some of the inlining heuristics. I would probably recommend cutting over to the "release/12.x" branch for now, which should be more up to date but also stable. Additionally, Arnd sent a fix for this particular warning here: https://lore.kernel.org/lkml/20210225130153.1956990-1-arnd(a)kernel.org/ Cheers, Nathan ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [kbuild-all] Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() @ 2021-02-25 18:34 ` Nathan Chancellor 0 siblings, 0 replies; 10+ messages in thread From: Nathan Chancellor @ 2021-02-25 18:34 UTC (permalink / raw) To: Rong Chen Cc: Jürgen Groß, kernel test robot, kbuild-all, clang-built-linux, linux-kernel, Borislav Petkov, Nick Desaulniers On Thu, Feb 25, 2021 at 04:17:21PM +0800, Rong Chen wrote: > > > On 2/24/21 10:26 PM, Jürgen Groß wrote: > > On 24.02.21 15:20, kernel test robot wrote: > > > tree: > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > master > > > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > > > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework > > > arch_local_irq_restore() to not use popf > > > date: 2 weeks ago > > > config: x86_64-randconfig-a005-20210223 (attached as .config) > > > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project > > > f14a14dd2564703db02f80c00db8ae492b594f77) > > > 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 > > > # install x86_64 cross compiling tool for clang build > > > # apt-get install binutils-x86-64-linux-gnu > > > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > git remote add linus > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > git fetch --no-tags linus master > > > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > # save the attached .config to linux build tree > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross > > > ARCH=x86_64 > > > > > > 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+0x1a8edb8): Section > > > > > mismatch in reference from the function stop_machine() to > > > > > the function .init.text:intel_rng_hw_init() > > > The function stop_machine() references > > > the function __init intel_rng_hw_init(). > > > This is often because stop_machine lacks a __init > > > annotation or the annotation of intel_rng_hw_init is wrong. > > > > I'd be very interested to know how the identified patch would be able to > > have this effect. > > Hi Clang Team, > > The problem is found by the latest clang, and I can't reproduce it with > clang-11, > could you take a look? > > Best Regards, > Rong Chen Hi Rong, Known issue. LLVM 13 cut over to the new pass manager (NPM) which has changed some of the inlining heuristics. I would probably recommend cutting over to the "release/12.x" branch for now, which should be more up to date but also stable. Additionally, Arnd sent a fix for this particular warning here: https://lore.kernel.org/lkml/20210225130153.1956990-1-arnd@kernel.org/ Cheers, Nathan ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() 2021-02-25 18:34 ` [kbuild-all] " Nathan Chancellor @ 2021-02-25 21:15 ` Nick Desaulniers -1 siblings, 0 replies; 10+ messages in thread From: Nick Desaulniers @ 2021-02-25 21:15 UTC (permalink / raw) To: kbuild-all [-- Attachment #1: Type: text/plain, Size: 3512 bytes --] On Thu, Feb 25, 2021 at 10:34 AM Nathan Chancellor <nathan@kernel.org> wrote: > > On Thu, Feb 25, 2021 at 04:17:21PM +0800, Rong Chen wrote: > > > > > > On 2/24/21 10:26 PM, Jürgen Groß wrote: > > > On 24.02.21 15:20, kernel test robot wrote: > > > > tree: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > > master > > > > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > > > > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework > > > > arch_local_irq_restore() to not use popf > > > > date: 2 weeks ago > > > > config: x86_64-randconfig-a005-20210223 (attached as .config) > > > > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project > > > > f14a14dd2564703db02f80c00db8ae492b594f77) > > > > 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 > > > > # install x86_64 cross compiling tool for clang build > > > > # apt-get install binutils-x86-64-linux-gnu > > > > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > > git remote add linus > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > > git fetch --no-tags linus master > > > > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > > # save the attached .config to linux build tree > > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross > > > > ARCH=x86_64 > > > > > > > > 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+0x1a8edb8): Section > > > > > > mismatch in reference from the function stop_machine() to > > > > > > the function .init.text:intel_rng_hw_init() > > > > The function stop_machine() references > > > > the function __init intel_rng_hw_init(). > > > > This is often because stop_machine lacks a __init > > > > annotation or the annotation of intel_rng_hw_init is wrong. > > > > > > I'd be very interested to know how the identified patch would be able to > > > have this effect. Sorry, this looks like fallout from a recent LLVM change, see also: https://lore.kernel.org/lkml/CAKwvOd=B=cHpp_XfPTtyVpQyrwQrFZX9SXKw=SJC1VC-VbEwFA(a)mail.gmail.com/ > > > > Hi Clang Team, > > > > The problem is found by the latest clang, and I can't reproduce it with > > clang-11, > > could you take a look? > > > > Best Regards, > > Rong Chen > > Hi Rong, > > Known issue. LLVM 13 cut over to the new pass manager (NPM) which has > changed some of the inlining heuristics. I would probably recommend > cutting over to the "release/12.x" branch for now, which should be more ehh...we still want coverage of ToT LLVM though, to spot potential issues like this. I'd take both (clang-12 and 13) if possible; both are pre-release and still undergoing active development. > up to date but also stable. > > Additionally, Arnd sent a fix for this particular warning here: > https://lore.kernel.org/lkml/20210225130153.1956990-1-arnd(a)kernel.org/ Looks like it got picked up by akpm@ in -mm? > > Cheers, > Nathan -- Thanks, ~Nick Desaulniers ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [kbuild-all] Re: WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() @ 2021-02-25 21:15 ` Nick Desaulniers 0 siblings, 0 replies; 10+ messages in thread From: Nick Desaulniers @ 2021-02-25 21:15 UTC (permalink / raw) To: Nathan Chancellor, Rong Chen, Jürgen Groß Cc: kernel test robot, kbuild-all, clang-built-linux, LKML, Borislav Petkov On Thu, Feb 25, 2021 at 10:34 AM Nathan Chancellor <nathan@kernel.org> wrote: > > On Thu, Feb 25, 2021 at 04:17:21PM +0800, Rong Chen wrote: > > > > > > On 2/24/21 10:26 PM, Jürgen Groß wrote: > > > On 24.02.21 15:20, kernel test robot wrote: > > > > tree: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > > master > > > > head: c03c21ba6f4e95e406a1a7b4c34ef334b977c194 > > > > commit: ab234a260b1f625b26cbefa93ca365b0ae66df33 x86/pv: Rework > > > > arch_local_irq_restore() to not use popf > > > > date: 2 weeks ago > > > > config: x86_64-randconfig-a005-20210223 (attached as .config) > > > > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project > > > > f14a14dd2564703db02f80c00db8ae492b594f77) > > > > 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 > > > > # install x86_64 cross compiling tool for clang build > > > > # apt-get install binutils-x86-64-linux-gnu > > > > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > > git remote add linus > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > > git fetch --no-tags linus master > > > > git checkout ab234a260b1f625b26cbefa93ca365b0ae66df33 > > > > # save the attached .config to linux build tree > > > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross > > > > ARCH=x86_64 > > > > > > > > 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+0x1a8edb8): Section > > > > > > mismatch in reference from the function stop_machine() to > > > > > > the function .init.text:intel_rng_hw_init() > > > > The function stop_machine() references > > > > the function __init intel_rng_hw_init(). > > > > This is often because stop_machine lacks a __init > > > > annotation or the annotation of intel_rng_hw_init is wrong. > > > > > > I'd be very interested to know how the identified patch would be able to > > > have this effect. Sorry, this looks like fallout from a recent LLVM change, see also: https://lore.kernel.org/lkml/CAKwvOd=B=cHpp_XfPTtyVpQyrwQrFZX9SXKw=SJC1VC-VbEwFA@mail.gmail.com/ > > > > Hi Clang Team, > > > > The problem is found by the latest clang, and I can't reproduce it with > > clang-11, > > could you take a look? > > > > Best Regards, > > Rong Chen > > Hi Rong, > > Known issue. LLVM 13 cut over to the new pass manager (NPM) which has > changed some of the inlining heuristics. I would probably recommend > cutting over to the "release/12.x" branch for now, which should be more ehh...we still want coverage of ToT LLVM though, to spot potential issues like this. I'd take both (clang-12 and 13) if possible; both are pre-release and still undergoing active development. > up to date but also stable. > > Additionally, Arnd sent a fix for this particular warning here: > https://lore.kernel.org/lkml/20210225130153.1956990-1-arnd@kernel.org/ Looks like it got picked up by akpm@ in -mm? > > Cheers, > Nathan -- Thanks, ~Nick Desaulniers ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2021-02-25 21:16 UTC | newest] Thread overview: 10+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2021-02-24 14:20 WARNING: modpost: vmlinux.o(.text+0x1a8edb8): Section mismatch in reference from the function stop_machine() to the function .init.text:intel_rng_hw_init() kernel test robot 2021-02-24 14:20 ` kernel test robot 2021-02-24 14:26 ` Jürgen Groß 2021-02-24 14:26 ` Jürgen Groß 2021-02-25 8:17 ` Rong Chen 2021-02-25 8:17 ` [kbuild-all] " Rong Chen 2021-02-25 18:34 ` Nathan Chancellor 2021-02-25 18:34 ` [kbuild-all] " Nathan Chancellor 2021-02-25 21:15 ` Nick Desaulniers 2021-02-25 21:15 ` [kbuild-all] " Nick Desaulniers
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