* [tglx-devel:x86/fpu 48/53] arch/x86/kernel/fpu/regset.c:46:33: error: incompatible pointer types passing 'struct xregs_state *' to parameter of type 'struct task_struct *'
@ 2021-06-14 19:41 kernel test robot
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From: kernel test robot @ 2021-06-14 19:41 UTC (permalink / raw
To: kbuild-all
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu
head: 70e967061547de5e520d4d81dd7f727894b06f6e
commit: 83745cf1a7e45c2930061f6a9b3d874152999b32 [48/53] x86/fpu: Hook up PKRU into ptrace()
config: x86_64-randconfig-a001-20210614 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
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/tglx/devel.git/commit/?id=83745cf1a7e45c2930061f6a9b3d874152999b32
git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
git fetch --no-tags tglx-devel x86/fpu
git checkout 83745cf1a7e45c2930061f6a9b3d874152999b32
# 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 errors (new ones prefixed by >>):
>> arch/x86/kernel/fpu/regset.c:46:33: error: incompatible pointer types passing 'struct xregs_state *' to parameter of type 'struct task_struct *' [-Werror,-Wincompatible-pointer-types]
copy_uabi_xstate_to_membuf(to, &fpu->state.xsave, XSTATE_COPY_FX);
^~~~~~~~~~~~~~~~~
arch/x86/include/asm/fpu/xstate.h:142:71: note: passing argument to parameter 'tsk' here
void copy_uabi_xstate_to_membuf(struct membuf to, struct task_struct *tsk,
^
1 error generated.
--
>> arch/x86/kernel/fpu/xstate.c:1070:16: error: use of undeclared identifier 'target'
pkru.pkru = target->thread.pkru;
^
1 error generated.
vim +46 arch/x86/kernel/fpu/regset.c
0c306bcfba2882 Ingo Molnar 2015-04-30 30
0c306bcfba2882 Ingo Molnar 2015-04-30 31 int xfpregs_get(struct task_struct *target, const struct user_regset *regset,
0557d64d983e3d Al Viro 2020-02-18 32 struct membuf to)
0c306bcfba2882 Ingo Molnar 2015-04-30 33 {
0c306bcfba2882 Ingo Molnar 2015-04-30 34 struct fpu *fpu = &target->thread.fpu;
0c306bcfba2882 Ingo Molnar 2015-04-30 35
2467897d5adf53 Thomas Gleixner 2021-06-14 36 if (!static_cpu_has(X86_FEATURE_FXSR))
0c306bcfba2882 Ingo Molnar 2015-04-30 37 return -ENODEV;
0c306bcfba2882 Ingo Molnar 2015-04-30 38
369a036de20671 Ingo Molnar 2017-09-23 39 fpu__prepare_read(fpu);
0c306bcfba2882 Ingo Molnar 2015-04-30 40
2467897d5adf53 Thomas Gleixner 2021-06-14 41 if (!use_xsave()) {
2467897d5adf53 Thomas Gleixner 2021-06-14 42 return membuf_write(&to, &fpu->state.fxsave,
2467897d5adf53 Thomas Gleixner 2021-06-14 43 sizeof(fpu->state.fxsave));
2467897d5adf53 Thomas Gleixner 2021-06-14 44 }
2467897d5adf53 Thomas Gleixner 2021-06-14 45
2467897d5adf53 Thomas Gleixner 2021-06-14 @46 copy_uabi_xstate_to_membuf(to, &fpu->state.xsave, XSTATE_COPY_FX);
2467897d5adf53 Thomas Gleixner 2021-06-14 47 return 0;
0c306bcfba2882 Ingo Molnar 2015-04-30 48 }
0c306bcfba2882 Ingo Molnar 2015-04-30 49
:::::: The code at line 46 was first introduced by commit
:::::: 2467897d5adf53cd056c96199f8222f0fa2e5a55 x86/fpu: Use copy_uabi_xstate_to_membuf() in xfpregs_get()
:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-06-14 19:41 [tglx-devel:x86/fpu 48/53] arch/x86/kernel/fpu/regset.c:46:33: error: incompatible pointer types passing 'struct xregs_state *' to parameter of type 'struct task_struct *' kernel test robot
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