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Message-ID: <202610282123.Qci24dn3-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Mailing-List: linux-pm@vger.kernel.org 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: arm-randconfig-1003-20261028 (https://download.01.org/0day-ci/archive/20261028/202610282123.Qci24dn3-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261028/202610282123.Qci24dn3-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/202610282123.Qci24dn3-lkp@intel.com/ All errors (new ones prefixed by >>): security/lockdown/lockdown.c: In function 'lockdown_check_iommu': >> security/lockdown/lockdown.c:217:8: error: implicit declaration of function 'iommu_is_available'; did you mean 'slab_is_available'? [-Werror=implicit-function-declaration] if (!iommu_is_available()) { ^~~~~~~~~~~~~~~~~~ slab_is_available cc1: some warnings being treated as errors vim +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