From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f176.google.com (mail-ie0-f176.google.com [209.85.223.176]) by kanga.kvack.org (Postfix) with ESMTP id 3A7F26B0256 for ; Fri, 24 Jul 2015 07:15:24 -0400 (EDT) Received: by ietj16 with SMTP id j16so15969245iet.0 for ; Fri, 24 Jul 2015 04:15:24 -0700 (PDT) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTP id f4si1806187igc.19.2015.07.24.04.15.22 for ; Fri, 24 Jul 2015 04:15:23 -0700 (PDT) Date: Fri, 24 Jul 2015 19:14:46 +0800 From: kbuild test robot Subject: [mmotm:master 260/385] include/linux/mmu_notifier.h:247:19: sparse: context imbalance in 'kpageidle_clear_pte_refs_one' - unexpected unlock Message-ID: <201507241941.wqF1a0kN%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, Johannes Weiner , Andres Lagar-Cavilla , Andrew Morton , Linux Memory Management List tree: git://git.cmpxchg.org/linux-mmotm.git master head: 61f5f835b6f06fbc233481b5d3c0afd71ecf54e8 commit: a06e045a2c99e39bf342ccb5dbbd6655f3814238 [260/385] proc: add kpageidle file reproduce: # apt-get install sparse git checkout a06e045a2c99e39bf342ccb5dbbd6655f3814238 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 'kpageidle_clear_pte_refs_one' - unexpected unlock vim +/kpageidle_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 59eaee21 Vladimir Davydov 2015-07-23 @247 static inline int mmu_notifier_clear_young(struct mm_struct *mm, 59eaee21 Vladimir Davydov 2015-07-23 248 unsigned long start, 59eaee21 Vladimir Davydov 2015-07-23 249 unsigned long end) 59eaee21 Vladimir Davydov 2015-07-23 250 { 59eaee21 Vladimir Davydov 2015-07-23 251 if (mm_has_notifiers(mm)) 59eaee21 Vladimir Davydov 2015-07-23 252 return __mmu_notifier_clear_young(mm, start, end); 59eaee21 Vladimir Davydov 2015-07-23 253 return 0; 59eaee21 Vladimir Davydov 2015-07-23 254 } 59eaee21 Vladimir Davydov 2015-07-23 255 :::::: The code at line 247 was first introduced by commit :::::: 59eaee21bfc9e38e75a18a8c28cc145f21be7314 mmu-notifier: add clear_young callback :::::: TO: Vladimir Davydov :::::: CC: Johannes Weiner --- 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