Re: [PATCH v2 1/2] Add prctl to allow userlevel TDX hypercalls

From: kernel test robot
Date: Sat Jul 27 2024 - 03:25:34 EST

Hi Tim,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/x86/vmware]
[also build test ERROR on tip/x86/tdx linus/master v6.10 next-20240726]
[cannot apply to tip/x86/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Tim-Merrifield/Add-prctl-to-allow-userlevel-TDX-hypercalls/20240727-025221
base: tip/x86/vmware
patch link: https://lore.kernel.org/r/651ceb5a89721621d522419e8a5d901632a78a22.1722019360.git.tim.merrifield%40broadcom.com
patch subject: [PATCH v2 1/2] Add prctl to allow userlevel TDX hypercalls
config: i386-buildonly-randconfig-003-20240727 (https://download.01.org/0day-ci/archive/20240727/202407271528.NcCDP6PG-lkp@xxxxxxxxx/config)
compiler: gcc-8 (Ubuntu 8.4.0-3ubuntu2) 8.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240727/202407271528.NcCDP6PG-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407271528.NcCDP6PG-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from include/linux/kernel.h:23,
from arch/x86/kernel/process.c:5:
arch/x86/kernel/process.c: In function 'get_coco_user_hcall_mode':
>> arch/x86/kernel/process.c:1041:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
include/linux/bitops.h:45:37: note: in definition of macro 'bitop'
__builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
^~~~
arch/x86/kernel/process.c:1040:10: note: in expansion of macro 'test_bit'
return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
^~~~~~~~
>> arch/x86/kernel/process.c:1041:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
include/linux/bitops.h:46:16: note: in definition of macro 'bitop'
(uintptr_t)(addr) != (uintptr_t)NULL && \
^~~~
arch/x86/kernel/process.c:1040:10: note: in expansion of macro 'test_bit'
return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
^~~~~~~~
>> arch/x86/kernel/process.c:1041:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
include/linux/bitops.h:47:50: note: in definition of macro 'bitop'
__builtin_constant_p(*(const unsigned long *)(addr))) ? \
^~~~
arch/x86/kernel/process.c:1040:10: note: in expansion of macro 'test_bit'
return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
^~~~~~~~
>> arch/x86/kernel/process.c:1041:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
include/linux/bitops.h:48:17: note: in definition of macro 'bitop'
const##op(nr, addr) : op(nr, addr))
^~~~
arch/x86/kernel/process.c:1040:10: note: in expansion of macro 'test_bit'
return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
^~~~~~~~
>> arch/x86/kernel/process.c:1041:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
include/linux/bitops.h:48:32: note: in definition of macro 'bitop'
const##op(nr, addr) : op(nr, addr))
^~~~
arch/x86/kernel/process.c:1040:10: note: in expansion of macro 'test_bit'
return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
^~~~~~~~
arch/x86/kernel/process.c: In function 'set_coco_user_hcall_mode':
arch/x86/kernel/process.c:1048:25: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
arch/x86/kernel/process.c:1051:27: error: 'mm_context_t' {aka 'struct <anonymous>'} has no member named 'flags'
&current->mm->context.flags);
^
arch/x86/kernel/process.c: In function 'get_coco_user_hcall_mode':
arch/x86/kernel/process.c:1042:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^


vim +1041 arch/x86/kernel/process.c

1037
1038 static int get_coco_user_hcall_mode(void)
1039 {
1040 return !test_bit(MM_CONTEXT_COCO_USER_HCALL,
> 1041 &current->mm->context.flags);
1042 }
1043

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