From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6354D28CF6F; Wed, 25 Mar 2026 02:50:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774407047; cv=none; b=l8PpYvQ5dbz3YOxNMxZ142lETFYXdnGcjyjBNjjTy4hkV39tyBCcgmdlWmln8BO8rtK+O97GjUt9Sc1QJfKBGEcUql2wUaa5h4cOMfusq2V0WI1FZ5ckQBEkCCSKZKEbGXTLQjmrvPiOjANMuNExTDTJGRQWhVF/6x1pdS/ugv8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774407047; c=relaxed/simple; bh=/z2mwH1jc1ViXGJqbjAwde3q4g9MJx2WxSYSffEiyG0=; h=Date:From:To:Cc:Subject:Message-ID; b=GxhvQNAy3REgvNMpsJC9M6MFt6U0F7GlAMycp4qSxICQ0foVibCPuKGdBrxIkM7cBwCmH89AeaxDQW5ju1/aY/prPp6f0OVOq4qwyJjwt5M4B5iSJ6xiaJH2vgbhkzNHx9XLliC9rph6/FzSbCRWmOOkHpZpsNDgWUKI2W6mwX0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=HmN99dYv; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="HmN99dYv" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774407046; x=1805943046; h=date:from:to:cc:subject:message-id; bh=/z2mwH1jc1ViXGJqbjAwde3q4g9MJx2WxSYSffEiyG0=; b=HmN99dYvxHRyAKXrR3mFWjxfiaQulYgIUvLRulpYF33Yg3fGRvAhT3Rs IE/R69Xv+ApmGcTDKPakJApm3UPxBzyiR0ASJuB87U8HRFjGcfa5rd/iO nsBb6GL2nEYIUTZMKIKjJuLrdXWcggon5IDh60SlN2tzvWEvkKxCwioJz VKudDjkGOaboO2Vh9Pe1vB9Pb4vqKrR1GKokOR/B0vY/FKJyMMDV2m7Ch r1oDMUI/9h7hwduG1Ogi/mJBJtieNYNpeCLDFr0T+TUA12ZXFcO6hOVLS Q5Unwk3a+XeCE/lPYsYF9CIbhXWRREJEueX40WOv3jSQFrrrY2UvbOu1R Q==; X-CSE-ConnectionGUID: 6hV0qJfmTyWsWLomsBEz6Q== X-CSE-MsgGUID: RC+Yor7XQt+fr46F2kTRCA== X-IronPort-AV: E=McAfee;i="6800,10657,11739"; a="75463633" X-IronPort-AV: E=Sophos;i="6.23,139,1770624000"; d="scan'208";a="75463633" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2026 19:50:44 -0700 X-CSE-ConnectionGUID: V2i23nECRbSgBTpHW9CWWw== X-CSE-MsgGUID: UOLWMasMSquOgp3Qnj1E8g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,139,1770624000"; d="scan'208";a="248087074" Received: from lkp-server01.sh.intel.com (HELO 3905d212be1b) ([10.239.97.150]) by fmviesa001.fm.intel.com with ESMTP; 24 Mar 2026 19:50:43 -0700 Received: from kbuild by 3905d212be1b with local (Exim 4.98.2) (envelope-from ) id 1w5EKO-000000005oB-3znE; Wed, 25 Mar 2026 02:50:40 +0000 Date: Wed, 25 Mar 2026 10:49:50 +0800 From: kernel test robot To: Mark Rutland Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [mark:testing/v7.0-rc5 2/2] arch/arm64/kernel/process.c:704:31: error: expected readable system register Message-ID: <202603251009.SO6yPDZX-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git testing/v7.0-rc5 head: 53a91f2f4a3dd7bb262b669780eea2fff13f4e37 commit: 53a91f2f4a3dd7bb262b669780eea2fff13f4e37 [2/2] HACK: arm64: Check CPU state at task-switch time config: arm64-randconfig-001-20260325 (https://download.01.org/0day-ci/archive/20260325/202603251009.SO6yPDZX-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 054e11d1a17e5ba88bb1a8ef32fad3346e80b186) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260325/202603251009.SO6yPDZX-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/202603251009.SO6yPDZX-lkp@intel.com/ All errors (new ones prefixed by >>): >> arch/arm64/kernel/process.c:704:31: error: expected readable system register 704 | if (system_uses_hw_pan() && !read_sysreg(PAN)) | ^ arch/arm64/include/asm/sysreg.h:1164:15: note: expanded from macro 'read_sysreg' 1164 | asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \ | ^ :1:10: note: instantiated into assembly here 1 | mrs x8, PAN | ^ 1 error generated. vim +704 arch/arm64/kernel/process.c 701 702 static inline void debug_switch_state(void) 703 { > 704 if (system_uses_hw_pan() && !read_sysreg(PAN)) 705 WARN_ONCE(1, "PSTATE.PAN clear unexpectedly at task-switch\n"); 706 707 if (system_uses_irq_prio_masking()) { 708 unsigned long daif_expected = 0; 709 unsigned long daif_actual = read_sysreg(daif); 710 unsigned long pmr_expected = GIC_PRIO_IRQOFF; 711 unsigned long pmr_actual = read_sysreg_s(SYS_ICC_PMR_EL1); 712 713 WARN_ONCE(daif_actual != daif_expected || 714 pmr_actual != pmr_expected, 715 "Unexpected DAIF + PMR: 0x%lx + 0x%lx (expected 0x%lx + 0x%lx)\n", 716 daif_actual, pmr_actual, 717 daif_expected, pmr_expected); 718 } else { 719 unsigned long daif_expected = DAIF_PROCCTX_NOIRQ; 720 unsigned long daif_actual = read_sysreg(daif); 721 722 WARN_ONCE(daif_actual != daif_expected, 723 "Unexpected DAIF value: 0x%lx (expected 0x%lx)\n", 724 daif_actual, daif_expected); 725 } 726 } 727 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki