linux-kernel - [tglx-devel:x86/fpu-kvm 69/88] arch/x86/kernel/fpu/xstate.c:1450:33: error: too few arguments to function call, expected 2, have 1

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Message-ID: <202110180356.c5M2JzOg-lkp@intel.com>
Date:   Mon, 18 Oct 2021 03:44:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Chang S. Bae" <chang.seok.bae@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: [tglx-devel:x86/fpu-kvm 69/88] arch/x86/kernel/fpu/xstate.c:1450:33:
 error: too few arguments to function call, expected 2, have 1

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu-kvm
head:   dc3cd5721cdb0d3116a2feb84755427d1522477a
commit: cdf2ff477461d9bfdeb7eac39d61ffbe1e323322 [69/88] x86/arch_prctl: Add controls for dynamic XSTATE components
config: i386-randconfig-r032-20211017 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 746dd6a700931988dd9021d3d04718f1929885a5)
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://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id=cdf2ff477461d9bfdeb7eac39d61ffbe1e323322
        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-kvm
        git checkout cdf2ff477461d9bfdeb7eac39d61ffbe1e323322
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

Note: the tglx-devel/x86/fpu-kvm HEAD dc3cd5721cdb0d3116a2feb84755427d1522477a builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

>> arch/x86/kernel/fpu/xstate.c:1450:33: error: too few arguments to function call, expected 2, have 1
                   return xstate_request_perm(idx);
                          ~~~~~~~~~~~~~~~~~~~    ^
   arch/x86/kernel/fpu/xstate.c:1399:19: note: 'xstate_request_perm' declared here
   static inline int xstate_request_perm(u64 permitted, u64 requested)
                     ^
   1 error generated.


vim +1450 arch/x86/kernel/fpu/xstate.c

  1404	
  1405	/**
  1406	 * fpu_xstate_prctl - xstate permission operations
  1407	 * @tsk:	Redundant pointer to current
  1408	 * @option:	A subfunction of arch_prctl()
  1409	 * @arg2:	option argument
  1410	 * Return:	0 if successful; otherwise, an error code
  1411	 *
  1412	 * Option arguments:
  1413	 *
  1414	 * ARCH_GET_XCOMP_SUPP: Pointer to user space u64 to store the info
  1415	 * ARCH_GET_XCOMP_PERM: Pointer to user space u64 to store the info
  1416	 * ARCH_REQ_XCOMP_PERM: Facility number requested
  1417	 *
  1418	 * For facilities which require more than one XSTATE component, the request
  1419	 * must be the highest state component number related to that facility,
  1420	 * e.g. for AMX which requires XFEATURE_XTILE_CFG(17) and
  1421	 * XFEATURE_XTILE_DATA(18) this would be XFEATURE_XTILE_DATA(18).
  1422	 */
  1423	long fpu_xstate_prctl(struct task_struct *tsk, int option, unsigned long arg2)
  1424	{
  1425		u64 __user *uptr = (u64 __user *)arg2;
  1426		u64 permitted, supported;
  1427		unsigned long idx = arg2;
  1428	
  1429		if (tsk != current)
  1430			return -EPERM;
  1431	
  1432		switch (option) {
  1433		case ARCH_GET_XCOMP_SUPP:
  1434			supported = fpu_user_cfg.max_features |	fpu_user_cfg.legacy_features;
  1435			return put_user(supported , uptr);
  1436	
  1437		case ARCH_GET_XCOMP_PERM:
  1438			/*
  1439			 * Lockless snapshot as it can also change right after the
  1440			 * dropping the lock.
  1441			 */
  1442			permitted = xstate_get_host_group_perm();
  1443			permitted &= XFEATURE_MASK_USER_SUPPORTED;
  1444			return put_user(permitted, uptr);
  1445	
  1446		case ARCH_REQ_XCOMP_PERM:
  1447			if (!IS_ENABLED(CONFIG_X86_64))
  1448				return -ENOTSUPP;
  1449	
> 1450			return xstate_request_perm(idx);
  1451	
  1452		default:
  1453			return -EINVAL;
  1454		}
  1455	}
  1456	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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