From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756554AbXLHNWr (ORCPT ); Sat, 8 Dec 2007 08:22:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753189AbXLHNWi (ORCPT ); Sat, 8 Dec 2007 08:22:38 -0500 Received: from mx1.suse.de ([195.135.220.2]:50775 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752954AbXLHNWh (ORCPT ); Sat, 8 Dec 2007 08:22:37 -0500 From: Andi Kleen Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg) To: linux-kernel@vger.kernel.org Subject: Re: BUG fs/dcache.c:595 in 2.4.24rc3-git3 during NFS umount Date: Sat, 8 Dec 2007 14:22:30 +0100 User-Agent: KMail/1.9.6 Cc: trond.myklebust@fys.uio.no, akpm@osdl.org, torvalds@osdl.org References: <200712031623.58223.ak@suse.de> In-Reply-To: <200712031623.58223.ak@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200712081422.30815.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 03 December 2007 16:23:58 Andi Kleen wrote: > > FYI > > Just saw this on a test system of mine running 2.4.24rc3 (+ some suse patches, > but they're not changing anything near this AFAIK) Got it again after rebooting the system. Can this be made a 2.6.24 blocker or something? Admittedly that was with a few suse patches again; I'll double check it happens in a vanilla kernel too although I don't think there is anything touching this area. The system runs autofs and mounts/umounts NFS servers regularly. -Andi [39943.212533] ------------[ cut here ]------------ [39943.221973] kernel BUG at fs/dcache.c:595! [39943.230369] invalid opcode: 0000 [1] SMP [39943.238638] last sysfs file: /devices/system/cpu/cpu7/cache/index2/shared_cpu_map [39943.253998] CPU 3 [39943.258283] Modules linked in: nfs lockd nfs_acl sunrpc autofs4 iptable_filter ip_tables ip6table_filter ip6_tables x_tables af_packet ipv6 cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq dm_crypt ext2 ext3 jbd mbcache loop dm_mod e1000 i2c_i801 shpchp container pci_hotplug button iTCO_wdt rtc_cmos rtc_core i2c_core iTCO_vendor_support rtc_lib sr_mod cdrom floppy sg ehci_hcd uhci_hcd sd_mod usbcore edd reiserfs fan aic79xx scsi_transport_spi ata_piix ahci libata scsi_mod thermal processor [39943.351718] Pid: 31869, comm: umount.nfs Tainted: G N 2.6.24-rc4-git3-20071206230004-default #1 [39943.370555] RIP: 0010:[] [] shrink_dcache_for_umount_subtree+0x16/0x241 [39943.390671] RSP: 0018:ffff8101dc88fe18 EFLAGS: 00010206 [39943.401552] RAX: 0000000000000000 RBX: ffff8100840893c0 RCX: 0000000000000000 [39943.416040] RDX: 00000000ffffffff RSI: 0000000000000296 RDI: ffff8100840893c0 [39943.430504] RBP: ffff8100084fff20 R08: ffff81004d0a6850 R09: 0000000000000296 [39943.444969] R10: ffff81004d0a6850 R11: ffffffff802f778c R12: ffff810222439400 [39943.459424] R13: 0000000000000000 R14: 00007fef065cdf00 R15: 0000000000000000 [39943.473887] FS: 00007fef052ad6f0(0000) GS:ffff810226419940(0000) knlGS:0000000000000000 [39943.490452] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [39943.502134] CR2: 00007f5793a36580 CR3: 000000021ee38000 CR4: 00000000000006e0 [39943.516599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [39943.531049] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [39943.545507] Process umount.nfs (pid: 31869, threadinfo ffff8101dc88e000, task ffff81021ef3b080) [39943.563289] Stack: 0000000000000296 ffff810222439400 ffffffff883e9be0 ffff810222439400 [39943.579846] 0000000000000000 ffffffff802a6728 ffff810222439400 ffffffff80297e34 [39943.595152] ffff81004d0a67c0 0000000000000017 ffffffff88401a80 ffffffff80297f33 [39943.609871] Call Trace: [39943.615566] [] shrink_dcache_for_umount+0x2f/0x3d [39943.628463] [] generic_shutdown_super+0x19/0xf1 [39943.641011] [] kill_anon_super+0x9/0x35 [39943.652193] [] :nfs:nfs_kill_super+0xd/0x16 [39943.664037] [] deactivate_super+0x6a/0x83 [39943.675537] [] sys_umount+0x23c/0x24d [39943.686361] [] d_kill+0x40/0x55 [39943.696139] [] dput+0x26/0x115 [39943.705745] [] __fput+0x14a/0x179 [39943.715861] [] mntput_no_expire+0x1f/0x86 [39943.727375] [] filp_close+0x5a/0x61 [39943.737853] [] system_call+0x7e/0x83 [39943.748495] [39943.751674] [39943.751675] Code: 0f 0b eb fe 48 c7 c7 80 06 63 80 e8 67 75 17 00 48 8b 53 40 [39943.770405] RIP [] shrink_dcache_for_umount_subtree+0x16/0x241 [39943.785790] RSP [82148.423473] JBD: barrier-based sync failed on dm-1 - disabling barriers