From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: WARN_ON namespace.c:638 mntput_no_expire on umount in 2.6.30 Date: Sun, 26 Jul 2009 12:10:28 +0200 Message-ID: <20090726101028.GA11367@basil.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Received: from one.firstfloor.org ([213.235.205.2]:60811 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753343AbZGZKKd (ORCPT ); Sun, 26 Jul 2009 06:10:33 -0400 Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Saw this when umounting a VFAT USB stick before it got pulled out. Haven't investigated, but thought I should post it. -Andi usb 2-1: new high speed USB device using ehci_hcd and address 4 usb 2-1: configuration #1 chosen from 1 choice scsi6 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 4 usb-storage: waiting for device to settle before scanning scsi 6:0:0:0: Direct-Access USB Flash Disk 5.00 PQ: 0 ANSI: 2 sd 6:0:0:0: Attached scsi generic sg1 type 0 sd 6:0:0:0: [sdb] 4087808 512-byte hardware sectors: (2.09 GB/1.94 GiB) usb-storage: device scan complete sd 6:0:0:0: [sdb] Write Protect is off sd 6:0:0:0: [sdb] Mode Sense: 0b 00 00 08 sd 6:0:0:0: [sdb] Assuming drive cache: write through sd 6:0:0:0: [sdb] Assuming drive cache: write through sdb: sdb1 sd 6:0:0:0: [sdb] Attached SCSI removable disk ------------[ cut here ]------------ WARNING: at /home/lsrc/linux-2.6.30-ak/fs/namespace.c:638 mntput_no_expire+0xcf/0x11b() Hardware name: Modules linked in: ... Pid: 8749, comm: umount Not tainted 2.6.30.2-BASIL #7 Call Trace: [] dump_trace+0x6e/0x292 [] dump_stack+0x69/0x6f [] warn_slowpath_common+0x77/0xa2 [] mntput_no_expire+0xcf/0x11b [] sys_umount+0x2b7/0x2e2 [] system_call_fastpath+0x16/0x1b [<00007fe4739421c7>] 0x7fe4739421c7 ---[ end trace 6fa485b25ae0195b ]--- usb 2-1: USB disconnect, address 4 -- ak@linux.intel.com -- Speaking for myself only.