Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757910Ab3DAJRJ (ORCPT ); Mon, 1 Apr 2013 05:17:09 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:53992 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757885Ab3DAJRH (ORCPT ); Mon, 1 Apr 2013 05:17:07 -0400 X-AuditID: cbfee68e-b7f946d000001e37-f7-51595091ca63 Date: Mon, 01 Apr 2013 09:17:05 +0000 (GMT) From: Jongman Heo Subject: [3.9-rc5] INFO: task umount:29671 blocked for more than 120 seconds To: linux-kernel@vger.kernel.org Reply-to: jongman.heo@samsung.com MIME-version: 1.0 X-MTR: 20130401091237811@jongman.heo Msgkey: 20130401091237811@jongman.heo X-EPLocale: ko_KR.utf-8 X-Priority: 3 X-EPWebmail-Msg-Type: personal X-EPWebmail-Reply-Demand: 0 X-EPApproval-Locale: X-EPHeader: ML X-EPTrCode: X-EPTrName: X-MLAttribute: X-RootMTR: 20130401091237811@jongman.heo X-ParentMTR: X-ArchiveUser: X-CPGSPASS: N Content-type: text/plain; charset=utf-8 MIME-version: 1.0 Message-id: <31775765.508251364807825241.JavaMail.weblogic@epml02> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupmleLIzCtJLcpLzFFi42JZI2JSpDsxIDLQ4ECDjMXlXXPYHBg9Pm+S C2CM4rJJSc3JLEst0rdL4Mpo3zqFtaBPraL1WVwDY49qFyMnh5CAmsTNz4cYQWwJAROJDb/3 sUHYYhIX7q0HsrmAapYySuztWMgMU7T+9VomiMR8RonJUzeAdbAIqEis3jORFcRmE9CR6Pi/ H8wWFvCRWH7mHhOILSKgKrHj7Ap2iM2KEteWLgbr5RUQlDg58wlLFyMH0AIVibN7oMKqEt9/ 34LaKy5xYe4ldgibV2JG+1MWCFtOYtrXNVA10hLnZ21ghHlg8ffHUHF+iWO3dzBBjOeVeHI/ GGbM7s1foP4VkJh65iBUq6bErdM7oFr5JNYsfMsCM2bXqeXMML33t8wF+4oZ6JMp3Q/ZQcYz A/Wu36WP7ileASeJXdOrQIEmIdDLIdHSt5FlAqPSLCRls5BMmoUwCVnJAkaWVYyiqQXJBcVJ 6UVGesWJucWleel6yfm5mxiBCeH0v2d9OxhvHrA+xJgMjI+JzFKiyfnAhJJXEm9obGZkYWpi amxkbmlGmrCSOK9ai3WgkEB6YklqdmpqQWpRfFFpTmrxIUYmDk6pBkb+fcvNy6d8Ep4999rz nnmTzr25vjkiQ8qiykPTcGrpnO0z3py5UVy8Z67O7pTZ6hu5OJ2PxayRu7XkzuMkGW+ftfOc 5iz5z7mH9/HHtifGB1gu6G+ZuN7pVu32JQms8inL717REXic7NhS82Mb27LJHnPaj5zoPbp4 XU1XdZ+4+065gkf3xaIblViKMxINtZiLihMBjWNVuh4DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrPKsWRmVeSWpSXmKPExsVy+t/tmboTAyIDDaZeFrW4vGsOmwOjx+dN cgGMUWk2GamJKalFCql5yfkpmXnptkrewfHO8aZmBoa6hpYW5koKeYm5qbZKLj4Bum6ZOUBD lRTKEnNKgUIBicXFSvp2NkX5pSWpChn5xSW2StGG5kZ6RgZ6pkZ6hsaxVoYGBkamQDUJaRnt W6ewFvSpVbQ+i2tg7FHtYuTkEBJQk7j5+RAjiC0hYCKx/vVaJghbTOLCvfVsXYxcQDXzGSUm T93ABpJgEVCRWL1nIiuIzSagI9Hxfz+YLSzgI7H8zD2wZhEBVYkdZ1ewQyxQlLi2dDFYL6+A oMTJmU9Yuhg5gBaoSJzdAxVWlfj++xYzxF5xiQtzL7FD2LwSM9qfskDYchLTvq6BqpGWOD9r AyPMnYu/P4aK80scu72DCWI8r8ST+8EwY3Zv/sIGYQtITD1zEKpVU+LW6R1QrXwSaxa+ZYEZ s+vUcmaY3vtb5oJ9xQz0yZTuh+wg45mBetfv0kf3FK+Ak8Su6VUTGGVnIcnMQtI8C6EZWckC RpZVjKKpBckFxUnpFcZ6xYm5xaV56XrJ+bmbGMHJ59niHYz/z1sfYhTgYFTi4Y24EBEoxJpY VlyZe4hRgoNZSYTX5xtQiDclsbIqtSg/vqg0J7X4EGMyMMImMkuJJucDE2NeSbyhsbGJmYmp pYmFgak5acJK4rzPWq0DhQTSE0tSs1NTC1KLYLYwcXBKNTC2e3lcTllS+iDvRKf052nOciqc ky0ZA69MXX3bZlqRmtza5lfPqiepMMUzpbClK81NvB6+WyIj314jKCyKZZHlHrf1Qlf9ZFj6 X0/iCpTo3+PCkW/39VzN05T/L5Ie1B6uWd0w5VRu22M/U57QZY3im47ZPHB7v/K3kI/ck/iN mW9ePwhpTVFiKc5INNRiLipOBABCTlpMggMAAA== DLP-Filter: Pass X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id r319HD3i008772 Content-Length: 3664 Lines: 58 Hi guys, I hit following warning with 3.9-rc5, during unmount (the device was mounted via loop device, in case it matters). Jongman. [ 3600.583547] INFO: task umount:29671 blocked for more than 120 seconds. [ 3600.583552] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3600.583555] umount D 0000000000000001 0 29671 29632 0x00000000 [ 3600.583561] ffff88011ecb5c98 0000000000000086 ffff880130ccade0 0000000000013e40 [ 3600.583566] ffff88011ecb5fd8 ffff88011ecb4010 0000000000013e40 0000000000013e40 [ 3600.583571] ffff88011ecb5fd8 0000000000013e40 ffff880132518000 ffff880130ccade0 [ 3600.583575] Call Trace: [ 3600.583583] [] schedule+0x29/0x70 [ 3600.583589] [] schedule_preempt_disabled+0xe/0x10 [ 3600.583593] [] __mutex_lock_slowpath+0xdf/0x160 [ 3600.583598] [] ? release_sysfs_dirent+0x7e/0x100 [ 3600.583603] [] mutex_lock+0x2b/0x50 [ 3600.583607] [] loop_clr_fd+0x24a/0x2e0 [ 3600.583612] [] ? _raw_spin_lock+0xe/0x20 [ 3600.583617] [] lo_release+0x78/0x90 [ 3600.583622] [] __blkdev_put+0x194/0x1d0 [ 3600.583628] [] blkdev_put+0x5d/0x160 [ 3600.583633] [] kill_block_super+0x4d/0x80 [ 3600.583638] [] deactivate_locked_super+0x45/0x70 [ 3600.583643] [] deactivate_super+0x4a/0x70 [ 3600.583648] [] mntput_no_expire+0xf8/0x150 [ 3600.583653] [] sys_umount+0xcd/0x3e0 [ 3600.583659] [] system_call_fastpath+0x16/0x1b [ 3600.583663] INFO: task blkid:29673 blocked for more than 120 seconds. [ 3600.583665] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3600.583667] blkid D ffffffff81807f20 0 29673 1 0x00000000 [ 3600.583672] ffff88011338fa88 0000000000000082 ffff880130ccc4d0 0000000000013e40 [ 3600.583677] ffff88011338ffd8 ffff88011338e010 0000000000013e40 0000000000013e40 [ 3600.583681] ffff88011338ffd8 0000000000013e40 ffff880132b416f0 ffff880130ccc4d0 [ 3600.583686] Call Trace: [ 3600.583691] [] schedule+0x29/0x70 [ 3600.583695] [] schedule_preempt_disabled+0xe/0x10 [ 3600.583700] [] __mutex_lock_slowpath+0xdf/0x160 [ 3600.583704] [] mutex_lock+0x2b/0x50 [ 3600.583709] [] __blkdev_get+0x73/0x480 [ 3600.583714] [] ? blkdev_get+0x360/0x360 [ 3600.583719] [] blkdev_get+0x51/0x360 [ 3600.583724] [] ? _raw_spin_lock+0xe/0x20 [ 3600.583729] [] ? blkdev_get+0x360/0x360 [ 3600.583734] [] blkdev_open+0x62/0x80 [ 3600.583739] [] do_dentry_open+0x23e/0x2c0 [ 3600.583743] [] finish_open+0x35/0x50 [ 3600.583748] [] do_last+0x696/0xe50 [ 3600.583752] [] ? kmem_cache_alloc_trace+0xc4/0x120 [ 3600.583757] [] path_openat+0xb8/0x490 [ 3600.583762] [] do_filp_open+0x49/0xa0 [ 3600.583767] [] ? _raw_spin_lock+0xe/0x20 [ 3600.583772] [] ? __alloc_fd+0xb5/0x160 [ 3600.583777] [] do_sys_open+0x108/0x1f0 [ 3600.583781] [] sys_open+0x21/0x30 [ 3600.583786] [] system_call_fastpath+0x16/0x1b????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?