From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 332E83EAC6B for ; Thu, 16 Apr 2026 19:51:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776369090; cv=none; b=oX6UsfIXEHAqIlKPerdTkEQmQvLajqjQRwxwby3pmPI+yA1GDxxtk/tEnrMjE16jxTm3sdx0R8rD6HyJ6BOer+GQMalUdNICxn82YvBdPjSEDxwEWkv2UXzGhij4Raf1u12pftATwAQl654Jrldaa/v6pcSrRFZFs7mDoQdpG+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776369090; c=relaxed/simple; bh=fRjVQzHEnqJhcv2nyMgVRst7Rq6wA2kbLEMGZFilnVQ=; h=Date:From:To:Cc:Subject:Message-ID; b=i5iIyWzWCsfT/aNswSjVh2p2qDrrDvlH0NWQvagj+ZaF9HbuMsphiVb2XDXzfgVKjyiaZAL6MugHa74vNctGIoJpxMNTWuDEnKuapbOsMKUbGmLLe3UDYpE50J7Cadwcu5GsSa/I2w+rj6FvShyuoyQkQnIJBP2EYEyWeCk7+cc= 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=DObe1ubE; arc=none smtp.client-ip=198.175.65.9 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="DObe1ubE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776369082; x=1807905082; h=date:from:to:cc:subject:message-id; bh=fRjVQzHEnqJhcv2nyMgVRst7Rq6wA2kbLEMGZFilnVQ=; b=DObe1ubE6TjqVtbGCELSAiGeHETtC2Uk0mdCM+8rrNBW678CeFBmZN59 r+JMWC+OZdc2mCEzd/9Io2XRNI7bYly3fQdjMxF58KTpI375apOFT92iV rIUDOWBOXUnIt0Vkss6IgRCl33b5r2Gr1z7vGunwqHSHdw2ft1kJLoFUW x/ddJUYv1p/KPRqJKnnekAWpYenW0wnxpMurxn57H52I8PZziwnoviFFi LhoZjTEc1B1Z5XB8vvSsvcbckadE9KcHz9iAFN5goDNNX7C5TqcHNi2hx MrIS1IZ6Y2PM38n4QHyh5MRQSX8IBM8lMLHIzfAHkUQ5s+VL9dTSaGnrF A==; X-CSE-ConnectionGUID: l60BGh9DTTaXawekf1L4hg== X-CSE-MsgGUID: A/8aCcr3TYuN+u5/RurI6w== X-IronPort-AV: E=McAfee;i="6800,10657,11761"; a="100028919" X-IronPort-AV: E=Sophos;i="6.23,181,1770624000"; d="scan'208";a="100028919" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Apr 2026 12:51:18 -0700 X-CSE-ConnectionGUID: 02qttbmYQpGuM8LC2NF0cw== X-CSE-MsgGUID: SxE2f9koQx++QnzmEL+mRA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,181,1770624000"; d="scan'208";a="227688589" Received: from lkp-server01.sh.intel.com (HELO 7f3b36e5d6a5) ([10.239.97.150]) by fmviesa007.fm.intel.com with ESMTP; 16 Apr 2026 12:51:16 -0700 Received: from kbuild by 7f3b36e5d6a5 with local (Exim 4.98.2) (envelope-from ) id 1wDSk6-000000001ta-0qMd; Thu, 16 Apr 2026 19:51:14 +0000 Date: Fri, 17 Apr 2026 03:50:54 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: mm/migrate.c:543 migration_entry_wait_huge() warn: inconsistent returns 'ptl'. Message-ID: <202604170344.KEXYFXqz-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: Lorenzo Stoakes CC: Andrew Morton CC: Linux Memory Management List Hi Lorenzo, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 1d51b370a0f8f642f4fc84c795fbedac0fcdbbd2 commit: 03bfbc3ad6e496fb576ca9ace08211943232fdf9 mm: remove is_hugetlb_entry_[migration, hwpoisoned]() date: 5 months ago :::::: branch date: 17 hours ago :::::: commit date: 5 months ago config: x86_64-randconfig-r072-20260416 (https://download.01.org/0day-ci/archive/20260417/202604170344.KEXYFXqz-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 smatch: v0.5.0-9007-gcf3ea02b 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 | Fixes: 03bfbc3ad6e4 ("mm: remove is_hugetlb_entry_[migration, hwpoisoned]()") | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202604170344.KEXYFXqz-lkp@intel.com/ smatch warnings: mm/migrate.c:543 migration_entry_wait_huge() warn: inconsistent returns 'ptl'. vim +/ptl +543 mm/migrate.c 30dad30922ccc7 Naoya Horiguchi 2013-06-12 507 ad1ac596e8a8c4 Miaohe Lin 2022-05-30 508 #ifdef CONFIG_HUGETLB_PAGE fcd48540d18887 Peter Xu 2022-12-16 509 /* fcd48540d18887 Peter Xu 2022-12-16 510 * The vma read lock must be held upon entry. Holding that lock prevents either fcd48540d18887 Peter Xu 2022-12-16 511 * the pte or the ptl from being freed. fcd48540d18887 Peter Xu 2022-12-16 512 * fcd48540d18887 Peter Xu 2022-12-16 513 * This function will release the vma lock before returning. fcd48540d18887 Peter Xu 2022-12-16 514 */ e6c0c03245b14d Christophe Leroy 2024-07-02 515 void migration_entry_wait_huge(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) ad1ac596e8a8c4 Miaohe Lin 2022-05-30 516 { 0cb8fd4d14165a Hugh Dickins 2023-06-08 517 spinlock_t *ptl = huge_pte_lockptr(hstate_vma(vma), vma->vm_mm, ptep); 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 518 softleaf_t entry; ad1ac596e8a8c4 Miaohe Lin 2022-05-30 519 pte_t pte; ad1ac596e8a8c4 Miaohe Lin 2022-05-30 520 fcd48540d18887 Peter Xu 2022-12-16 521 hugetlb_vma_assert_locked(vma); ad1ac596e8a8c4 Miaohe Lin 2022-05-30 522 spin_lock(ptl); e6c0c03245b14d Christophe Leroy 2024-07-02 523 pte = huge_ptep_get(vma->vm_mm, addr, ptep); ad1ac596e8a8c4 Miaohe Lin 2022-05-30 524 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 525 if (huge_pte_none(pte)) 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 526 goto fail; 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 527 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 528 entry = softleaf_from_pte(pte); 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 529 if (softleaf_is_migration(entry)) { fcd48540d18887 Peter Xu 2022-12-16 530 /* fcd48540d18887 Peter Xu 2022-12-16 531 * If migration entry existed, safe to release vma lock fcd48540d18887 Peter Xu 2022-12-16 532 * here because the pgtable page won't be freed without the fcd48540d18887 Peter Xu 2022-12-16 533 * pgtable lock released. See comment right above pgtable fcd48540d18887 Peter Xu 2022-12-16 534 * lock release in migration_entry_wait_on_locked(). fcd48540d18887 Peter Xu 2022-12-16 535 */ fcd48540d18887 Peter Xu 2022-12-16 536 hugetlb_vma_unlock_read(vma); 0cb8fd4d14165a Hugh Dickins 2023-06-08 537 migration_entry_wait_on_locked(pte_to_swp_entry(pte), ptl); 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 538 return; fcd48540d18887 Peter Xu 2022-12-16 539 } 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 540 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 541 fail: 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 542 spin_unlock(ptl); 03bfbc3ad6e496 Lorenzo Stoakes 2025-11-10 @543 hugetlb_vma_unlock_read(vma); 30dad30922ccc7 Naoya Horiguchi 2013-06-12 544 } ad1ac596e8a8c4 Miaohe Lin 2022-05-30 545 #endif 30dad30922ccc7 Naoya Horiguchi 2013-06-12 546 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki