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d="scan'208";a="5174543" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa008.fm.intel.com with ESMTP; 28 Oct 2026 07:23:27 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xM4Ym-00000000YqO-3dbR; Wed, 28 Oct 2026 14:23:24 +0000 Date: Wed, 28 Oct 2026 22:22:38 +0800 From: kernel test robot To: "Mario Limonciello (AMD)" Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-pm@vger.kernel.org Subject: [amd-pstate:superm1/lockdown-iommu 3/3] security/lockdown/lockdown.c:217:8: error: call to undeclared function 'iommu_is_available'; ISO C99 and later do not support implicit function declarations Message-ID: <202610282110.ZVggpdqM-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Mailing-List: llvm@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list tree: https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git superm1/lockdown-iommu head: 74b0183524154e17897a7789da06a937eaf8b2b7 commit: 74b0183524154e17897a7789da06a937eaf8b2b7 [3/3] security: lockdown: Prevent boot with lockdown but no IOMMU config: arm64-randconfig-1003-20261028 (https://download.01.org/0day-ci/archive/20261028/202610282110.ZVggpdqM-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 1da436a23e613c425fc9b868fc8deb979ede47a4) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261028/202610282110.ZVggpdqM-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202610282110.ZVggpdqM-lkp@intel.com/ All errors (new ones prefixed by >>): >> security/lockdown/lockdown.c:217:8: error: call to undeclared function 'iommu_is_available'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 217 | if (!iommu_is_available()) { | ^ security/lockdown/lockdown.c:217:8: note: did you mean 'slab_is_available'? include/linux/slab.h:283:6: note: 'slab_is_available' declared here 283 | bool slab_is_available(void); | ^ 1 error generated. vim +/iommu_is_available +217 security/lockdown/lockdown.c 197 198 /* 199 * Late init call to verify IOMMU availability when lockdown is active. 200 * This catches cases where: 201 * - IOMMU hardware is absent on the platform 202 * - IOMMU was disabled by driver initialization failure 203 * - IOMMU was not detected (e.g. broken firmware, missing ACPI tables) 204 * 205 * On x86, we also check no_iommu here as a double-check. The early check 206 * in lockdown_lsm_init() catches 'iommu=off' from the cmdline before 207 * lockdown_lsm_init() runs, but this late check covers any missed cases. 208 */ 209 static int __init lockdown_check_iommu(void) 210 { 211 if (kernel_locked_down > LOCKDOWN_NONE) { 212 /* 213 * Check generic IOMMU availability (all architectures). 214 * iommu_is_available() returns true if any IOMMU driver 215 * registered successfully. 216 */ > 217 if (!iommu_is_available()) { -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki