From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759121Ab3CESy7 (ORCPT ); Tue, 5 Mar 2013 13:54:59 -0500 Received: from mail.candelatech.com ([208.74.158.172]:56998 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759028Ab3CESy5 (ORCPT ); Tue, 5 Mar 2013 13:54:57 -0500 Message-ID: <51363F80.8070609@candelatech.com> Date: Tue, 05 Mar 2013 10:54:56 -0800 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3 MIME-Version: 1.0 To: linux-cifs@vger.kernel.org, Linux Kernel Mailing List Subject: 3.7.10+: BUG Dentry still in use [unmount of cifs cifs] Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In doing some CIFS testing (utilizing it's feature to bind to local address..but not sure that matters), we saw this error when trying to un-mount. Our kernel is patched (nfs, some networking related patches), but there are no out-of-kernel patches to CIFS, so I don't *think* this is anything we could have caused. This problem appears to be easily reproducible, so we will be happy to test patches if anyone has any suggestions. BUG: Dentry ffff8800c07e43c0{i=45762,n=cifs2-01.7.lf-data} still in use (1) [unmount of cifs cifs] ------------[ cut here ]------------ kernel BUG at /home/greearb/git/linux-3.7.dev.y/fs/dcache.c:967! invalid opcode: 0000 [#1] PREEMPT SMP Modules linked in: nls_utf8 cifs 8021q garp stp llc iptable_raw xt_CT veth nf_nat_ipv4 nf_nat fuse macvlan wanlink(O) pktgen nfsv3 nfs_acl nfsv4 auth_rpcgss nfs fscache lockd sunrpc be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi ib_iser rdma_cm ib_addr iw_cm ib_cm ib_sa ib_mad ib_core w83793 iscsi_tcp w83627hf libiscsi_tcp hwmon_vid libiscsi scsi_transport_iscsi coretemp mperf kvm_intel kvm i5k_amb uinput i5000_edac gpio_ich edac_core iTCO_wdt e1000e iTCO_vendor_support lpc_ich i2c_i801 pcspkr ioatdma dca microcode shpchp ipv6 floppy radeon i2c_algo_bit hwmon drm_kms_helper ttm drm i2c_core [last unloaded: iptable_nat] CPU 6 Pid: 6610, comm: umount Tainted: G C O 3.7.10+ #74 Supermicro X7DBU/X7DBU RIP: 0010:[] [] shrink_dcache_for_umount_subtree+0x84/0x194 RSP: 0018:ffff8800c0085dc8 EFLAGS: 00010296 RAX: 0000000000000062 RBX: ffff8800c07e43c0 RCX: 0000000000000059 RDX: ffffffff81bc25a8 RSI: 0000000000000046 RDI: 0000000000000246 RBP: ffff8800c0085de8 R08: 0000000000000001 R09: ffff8800c0085cc8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800c050e9c0 R13: ffff880128ee8000 R14: 0000000000000000 R15: ffff8800c0085f28 FS: 00007f6084847840(0000) GS:ffff88012fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f608442c3a0 CR3: 00000000c7c2d000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process umount (pid: 6610, threadinfo ffff8800c0084000, task ffff88012a6a0000) Stack: ffff880128ee8310 00000000000128c0 ffff880128ee8000 ffffffffa06b96b0 ffff8800c0085e08 ffffffff81159310 ffff8800c0084000 ffff880128ee8000 ffff8800c0085e38 ffffffff81149afe ffff8800c0085e38 0000000000000021 Call Trace: [] shrink_dcache_for_umount+0x37/0x49 [] generic_shutdown_super+0x20/0xd2 [] kill_anon_super+0x11/0x1c [] cifs_kill_sb+0x15/0x21 [cifs] [] deactivate_locked_super+0x32/0x5e [] deactivate_super+0x40/0x46 [] mntput_no_expire+0x12d/0x136 [] sys_umount+0x321/0x34c [] ? path_put+0x1d/0x21 [] system_call_fastpath+0x16/0x1b Code: 50 28 4c 8b 0a 31 d2 48 85 f6 74 04 48 8b 56 40 48 05 10 03 00 00 48 89 de 48 c7 c7 9d d0 7b 81 48 89 04 24 31 c0 e8 b9 4e 3c 00 <0f> 0b eb fe 4c 8b 63 18 4c 39 e3 75 3c 48 8b 93 90 00 00 00 48 RIP [] shrink_dcache_for_umount_subtree+0x84/0x194 RSP ---[ end trace 9b2978a89532c292 ]--- -- Ben Greear Candela Technologies Inc http://www.candelatech.com