From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id D5EB86B0253 for ; Thu, 6 Aug 2015 05:50:13 -0400 (EDT) Received: by pawu10 with SMTP id u10so59223093paw.1 for ; Thu, 06 Aug 2015 02:50:13 -0700 (PDT) Received: from mga02.intel.com (mga02.intel.com. [134.134.136.20]) by mx.google.com with ESMTP id w13si10458270pas.205.2015.08.06.02.50.12 for ; Thu, 06 Aug 2015 02:50:12 -0700 (PDT) Date: Thu, 6 Aug 2015 17:48:54 +0800 From: kbuild test robot Subject: [linux-next:master 6252/6518] include/linux/mmu_notifier.h:247:19: sparse: context imbalance in 'page_idle_clear_pte_refs_one' - unexpected unlock Message-ID: <201508061748.2PzbGIFl%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: Vladimir Davydov Cc: kbuild-all@01.org, Andrew Morton , Linux Memory Management List tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: c6b169e6ffb962068153bd92b0c4ecbd731a122f commit: cbba4e22584984bffccd07e0801fd2b8ec1ecf5f [6252/6518] Move /proc/kpageidle to /sys/kernel/mm/page_idle/bitmap reproduce: # apt-get install sparse git checkout cbba4e22584984bffccd07e0801fd2b8ec1ecf5f make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> include/linux/mmu_notifier.h:247:19: sparse: context imbalance in 'page_idle_clear_pte_refs_one' - unexpected unlock vim +/page_idle_clear_pte_refs_one +247 include/linux/mmu_notifier.h cddb8a5c Andrea Arcangeli 2008-07-28 231 cddb8a5c Andrea Arcangeli 2008-07-28 232 static inline void mmu_notifier_release(struct mm_struct *mm) cddb8a5c Andrea Arcangeli 2008-07-28 233 { cddb8a5c Andrea Arcangeli 2008-07-28 234 if (mm_has_notifiers(mm)) cddb8a5c Andrea Arcangeli 2008-07-28 235 __mmu_notifier_release(mm); cddb8a5c Andrea Arcangeli 2008-07-28 236 } cddb8a5c Andrea Arcangeli 2008-07-28 237 cddb8a5c Andrea Arcangeli 2008-07-28 238 static inline int mmu_notifier_clear_flush_young(struct mm_struct *mm, 57128468 Andres Lagar-Cavilla 2014-09-22 239 unsigned long start, 57128468 Andres Lagar-Cavilla 2014-09-22 240 unsigned long end) cddb8a5c Andrea Arcangeli 2008-07-28 241 { cddb8a5c Andrea Arcangeli 2008-07-28 242 if (mm_has_notifiers(mm)) 57128468 Andres Lagar-Cavilla 2014-09-22 243 return __mmu_notifier_clear_flush_young(mm, start, end); cddb8a5c Andrea Arcangeli 2008-07-28 244 return 0; cddb8a5c Andrea Arcangeli 2008-07-28 245 } cddb8a5c Andrea Arcangeli 2008-07-28 246 632116f6 Vladimir Davydov 2015-08-06 @247 static inline int mmu_notifier_clear_young(struct mm_struct *mm, 632116f6 Vladimir Davydov 2015-08-06 248 unsigned long start, 632116f6 Vladimir Davydov 2015-08-06 249 unsigned long end) 632116f6 Vladimir Davydov 2015-08-06 250 { 632116f6 Vladimir Davydov 2015-08-06 251 if (mm_has_notifiers(mm)) 632116f6 Vladimir Davydov 2015-08-06 252 return __mmu_notifier_clear_young(mm, start, end); 632116f6 Vladimir Davydov 2015-08-06 253 return 0; 632116f6 Vladimir Davydov 2015-08-06 254 } 632116f6 Vladimir Davydov 2015-08-06 255 :::::: The code at line 247 was first introduced by commit :::::: 632116f6446375758508e1feb402a16265410ed2 mmu-notifier: add clear_young callback :::::: TO: Vladimir Davydov :::::: CC: Stephen Rothwell --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org