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X-CSE-ConnectionGUID: Gkh7j7AZTxaTQE7YbHzujw== X-CSE-MsgGUID: Ea/lLLOsRxOtXjjZepEhwQ== X-IronPort-AV: E=McAfee;i="6800,10657,11732"; a="92388598" X-IronPort-AV: E=Sophos;i="6.23,126,1770624000"; d="scan'208";a="92388598" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2026 12:04:32 -0700 X-CSE-ConnectionGUID: V1aTXVxeS9+yKIj+XETIHA== X-CSE-MsgGUID: bmnqZ984Qm6l9wIt5CZX2w== X-ExtLoop1: 1 Received: from lkp-server01.sh.intel.com (HELO 63737dd503cb) ([10.239.97.150]) by fmviesa003.fm.intel.com with ESMTP; 17 Mar 2026 12:04:30 -0700 Received: from kbuild by 63737dd503cb with local (Exim 4.98.2) (envelope-from ) id 1w2ZiO-000000001qZ-0dKU; Tue, 17 Mar 2026 19:04:28 +0000 Date: Wed, 18 Mar 2026 03:03:38 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: [jlayton:exportd-netlink 3/18] net/sunrpc/cache.c:1074 cache_release() error: dereferencing freed memory 'rq' (line 1070) Message-ID: <202603180258.r8Bt94T2-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 TO: Chuck Lever CC: Jeff Layton tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git exportd-netlink head: 4599c5d95d86c6bc932897f19b1f5a573e7c4637 commit: e344b49528c8ef457ee714bb65e2da4c121132c2 [3/18] Merge branch 'mrchuck/nfsd-testing' :::::: branch date: 29 hours ago :::::: commit date: 30 hours ago config: x86_64-randconfig-161-20260317 (https://download.01.org/0day-ci/archive/20260318/202603180258.r8Bt94T2-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) rustc: rustc 1.88.0 (6b00bc388 2025-06-23) smatch: v0.5.0-9004-gb810ac53 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202603180258.r8Bt94T2-lkp@intel.com/ smatch warnings: net/sunrpc/cache.c:1074 cache_release() error: dereferencing freed memory 'rq' (line 1070) vim +/rq +1074 net/sunrpc/cache.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 1039 173912a6add00f Trond Myklebust 2009-08-09 1040 static int cache_release(struct inode *inode, struct file *filp, 173912a6add00f Trond Myklebust 2009-08-09 1041 struct cache_detail *cd) ^1da177e4c3f41 Linus Torvalds 2005-04-16 1042 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 1043 struct cache_reader *rp = filp->private_data; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1044 ^1da177e4c3f41 Linus Torvalds 2005-04-16 1045 if (rp) { 17ad31b3a43b72 Jeff Layton 2026-02-23 1046 struct cache_request *rq = NULL; 17ad31b3a43b72 Jeff Layton 2026-02-23 1047 b00567a1495f66 Jeff Layton 2026-02-23 1048 spin_lock(&cd->queue_lock); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1049 if (rp->offset) { 812936f74067e6 Jeff Layton 2026-02-23 1050 struct cache_request *cr; 812936f74067e6 Jeff Layton 2026-02-23 1051 812936f74067e6 Jeff Layton 2026-02-23 1052 cr = cache_next_request(cd, rp->next_seqno); 812936f74067e6 Jeff Layton 2026-02-23 1053 if (cr) { 17ad31b3a43b72 Jeff Layton 2026-02-23 1054 cr->readers--; 17ad31b3a43b72 Jeff Layton 2026-02-23 1055 if (cr->readers == 0 && 17ad31b3a43b72 Jeff Layton 2026-02-23 1056 !test_bit(CACHE_PENDING, 17ad31b3a43b72 Jeff Layton 2026-02-23 1057 &cr->item->flags)) { 812936f74067e6 Jeff Layton 2026-02-23 1058 list_del(&cr->list); 17ad31b3a43b72 Jeff Layton 2026-02-23 1059 rq = cr; 17ad31b3a43b72 Jeff Layton 2026-02-23 1060 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1061 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1062 rp->offset = 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1063 } 812936f74067e6 Jeff Layton 2026-02-23 1064 list_del(&rp->list); b00567a1495f66 Jeff Layton 2026-02-23 1065 spin_unlock(&cd->queue_lock); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1066 0b88d5fcde160d Jeff Layton 2026-02-23 1067 if (rq) { 0b88d5fcde160d Jeff Layton 2026-02-23 1068 cache_put(rq->item, cd); 0b88d5fcde160d Jeff Layton 2026-02-23 1069 kfree(rq->buf); 0b88d5fcde160d Jeff Layton 2026-02-23 @1070 kfree(rq); 0b88d5fcde160d Jeff Layton 2026-02-23 1071 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1072 17ad31b3a43b72 Jeff Layton 2026-02-23 1073 if (rq) { 17ad31b3a43b72 Jeff Layton 2026-02-23 @1074 cache_put(rq->item, cd); 17ad31b3a43b72 Jeff Layton 2026-02-23 1075 kfree(rq->buf); 17ad31b3a43b72 Jeff Layton 2026-02-23 1076 kfree(rq); 17ad31b3a43b72 Jeff Layton 2026-02-23 1077 } 17ad31b3a43b72 Jeff Layton 2026-02-23 1078 ^1da177e4c3f41 Linus Torvalds 2005-04-16 1079 filp->private_data = NULL; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1080 kfree(rp); 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Wed, 18 Mar 2026 00:42:58 -0700 (PDT) Received: from localhost ([196.207.164.177]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-486f4b9beb0sm23455385e9.8.2026.03.18.00.42.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2026 00:42:58 -0700 (PDT) Date: Wed, 18 Mar 2026 10:42:55 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Chuck Lever Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, Jeff Layton Subject: [jlayton:exportd-netlink 3/18] net/sunrpc/cache.c:1074 cache_release() error: dereferencing freed memory 'rq' (line 1070) Message-ID: <202603180258.r8Bt94T2-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Message-ID: <20260318074255.LXy7pS6oGPvopv2dJcxfFoWCHs2X8TwP8nU_6p0zbog@z> tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git exportd-netlink head: 4599c5d95d86c6bc932897f19b1f5a573e7c4637 commit: e344b49528c8ef457ee714bb65e2da4c121132c2 [3/18] Merge branch 'mrchuck/nfsd-testing' config: x86_64-randconfig-161-20260317 (https://download.01.org/0day-ci/archive/20260318/202603180258.r8Bt94T2-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) rustc: rustc 1.88.0 (6b00bc388 2025-06-23) smatch: v0.5.0-9004-gb810ac53 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202603180258.r8Bt94T2-lkp@intel.com/ smatch warnings: net/sunrpc/cache.c:1074 cache_release() error: dereferencing freed memory 'rq' (line 1070) vim +/rq +1074 net/sunrpc/cache.c 173912a6add00f Trond Myklebust 2009-08-09 1040 static int cache_release(struct inode *inode, struct file *filp, 173912a6add00f Trond Myklebust 2009-08-09 1041 struct cache_detail *cd) ^1da177e4c3f41 Linus Torvalds 2005-04-16 1042 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 1043 struct cache_reader *rp = filp->private_data; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1044 ^1da177e4c3f41 Linus Torvalds 2005-04-16 1045 if (rp) { 17ad31b3a43b72 Jeff Layton 2026-02-23 1046 struct cache_request *rq = NULL; 17ad31b3a43b72 Jeff Layton 2026-02-23 1047 b00567a1495f66 Jeff Layton 2026-02-23 1048 spin_lock(&cd->queue_lock); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1049 if (rp->offset) { 812936f74067e6 Jeff Layton 2026-02-23 1050 struct cache_request *cr; 812936f74067e6 Jeff Layton 2026-02-23 1051 812936f74067e6 Jeff Layton 2026-02-23 1052 cr = cache_next_request(cd, rp->next_seqno); 812936f74067e6 Jeff Layton 2026-02-23 1053 if (cr) { 17ad31b3a43b72 Jeff Layton 2026-02-23 1054 cr->readers--; 17ad31b3a43b72 Jeff Layton 2026-02-23 1055 if (cr->readers == 0 && 17ad31b3a43b72 Jeff Layton 2026-02-23 1056 !test_bit(CACHE_PENDING, 17ad31b3a43b72 Jeff Layton 2026-02-23 1057 &cr->item->flags)) { 812936f74067e6 Jeff Layton 2026-02-23 1058 list_del(&cr->list); 17ad31b3a43b72 Jeff Layton 2026-02-23 1059 rq = cr; 17ad31b3a43b72 Jeff Layton 2026-02-23 1060 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1061 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1062 rp->offset = 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1063 } 812936f74067e6 Jeff Layton 2026-02-23 1064 list_del(&rp->list); b00567a1495f66 Jeff Layton 2026-02-23 1065 spin_unlock(&cd->queue_lock); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1066 0b88d5fcde160d Jeff Layton 2026-02-23 1067 if (rq) { 0b88d5fcde160d Jeff Layton 2026-02-23 1068 cache_put(rq->item, cd); 0b88d5fcde160d Jeff Layton 2026-02-23 1069 kfree(rq->buf); 0b88d5fcde160d Jeff Layton 2026-02-23 @1070 kfree(rq); ^^^^^^^^^ 0b88d5fcde160d Jeff Layton 2026-02-23 1071 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 1072 17ad31b3a43b72 Jeff Layton 2026-02-23 1073 if (rq) { 17ad31b3a43b72 Jeff Layton 2026-02-23 @1074 cache_put(rq->item, cd); 17ad31b3a43b72 Jeff Layton 2026-02-23 1075 kfree(rq->buf); 17ad31b3a43b72 Jeff Layton 2026-02-23 1076 kfree(rq); ^^^^^^^^^ 17ad31b3a43b72 Jeff Layton 2026-02-23 1077 } Looks like a bad merge. 17ad31b3a43b72 Jeff Layton 2026-02-23 1078 ^1da177e4c3f41 Linus Torvalds 2005-04-16 1079 filp->private_data = NULL; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1080 kfree(rp); 64a38e840ce594 Dave Wysochanski 2019-07-26 1081 } 64a38e840ce594 Dave Wysochanski 2019-07-26 1082 if (filp->f_mode & FMODE_WRITE) { 64a38e840ce594 Dave Wysochanski 2019-07-26 1083 atomic_dec(&cd->writers); c5b29f885afe89 NeilBrown 2010-08-12 1084 cd->last_close = seconds_since_boot(); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1085 } f7e86ab92f2198 Trond Myklebust 2009-08-19 1086 module_put(cd->owner); ^1da177e4c3f41 Linus Torvalds 2005-04-16 1087 return 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 1088 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki