Re: [PATCH v3 4/4] selftests/mm: Add new testcases for pkeys

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20240425180542.1042933-5-aruna.ramakrishna@oracle.com>
References: <20240425180542.1042933-5-aruna.ramakrishna@oracle.com>
TO: Aruna Ramakrishna <aruna.ramakrishna@oracle.com>
TO: linux-kernel@vger.kernel.org
CC: x86@kernel.org
CC: dave.hansen@linux.intel.com
CC: tglx@linutronix.de
CC: mingo@kernel.org
CC: keith.lucas@oracle.com
CC: aruna.ramakrishna@oracle.com

Hi Aruna,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on akpm-mm/mm-everything tip/master linus/master v6.9-rc5]
[cannot apply to tip/auto-latest next-20240426]
[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/Aruna-Ramakrishna/x86-pkeys-Signal-handling-function-interface-changes-to-accept-PKRU-as-a-parameter/20240426-020800
base:   tip/x86/core
patch link:    https://lore.kernel.org/r/20240425180542.1042933-5-aruna.ramakrishna%40oracle.com
patch subject: [PATCH v3 4/4] selftests/mm: Add new testcases for pkeys
:::::: branch date: 34 hours ago
:::::: commit date: 34 hours ago
compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240427/202404271128.ERrCledH-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/r/202404271128.ERrCledH-lkp@intel.com/

All errors (new ones prefixed by >>):

>> pkey_sighandler_tests.c:41:16: error: couldn't allocate input reg for constraint '{r10}'
      41 |         asm volatile ("syscall"
         |                       ^
>> pkey_sighandler_tests.c:41:16: error: couldn't allocate input reg for constraint '{r10}'
>> pkey_sighandler_tests.c:41:16: error: couldn't allocate input reg for constraint '{r10}'
>> pkey_sighandler_tests.c:41:16: error: couldn't allocate input reg for constraint '{r10}'
>> pkey_sighandler_tests.c:41:16: error: couldn't allocate input reg for constraint '{r10}'
   5 errors generated.


vim +41 tools/testing/selftests/mm/pkey_sighandler_tests.c

6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  33  
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  34  static inline __attribute__((always_inline)) long
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  35  syscall_raw(long n, long a1, long a2, long a3, long a4, long a5, long a6)
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  36  {
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  37  	unsigned long ret;
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  38  	register long r10 asm("r10") = a4;
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  39  	register long r8 asm("r8") = a5;
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  40  	register long r9 asm("r9") = a6;
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25 @41  	asm volatile ("syscall"
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  42  		      : "=a"(ret)
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  43  		      : "a"(n), "D"(a1), "S"(a2), "d"(a3), "r"(r10), "r"(r8), "r"(r9)
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  44  		      : "rcx", "r11", "memory");
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  45  	return ret;
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  46  }
6b81215d7e8a34 Aruna Ramakrishna 2024-04-25  47  

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