Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752450Ab1EWI6d (ORCPT ); Mon, 23 May 2011 04:58:33 -0400 Received: from [46.170.108.42] ([46.170.108.42]:4367 "EHLO krak.alatek.krakow.pl" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751061Ab1EWI6c convert rfc822-to-8bit (ORCPT ); Mon, 23 May 2011 04:58:32 -0400 X-Greylist: delayed 1984 seconds by postgrey-1.27 at vger.kernel.org; Mon, 23 May 2011 04:58:31 EDT From: Pawel Sikora To: linux-kernel@vger.kernel.org Subject: [2.6.37.6] warn_slowpath at fs/dcache.c:1996 prepend_path+0x150/0x160() Date: Mon, 23 May 2011 10:25:24 +0200 User-Agent: KMail/1.13.7 (Linux/2.6.37.6-2; KDE/4.6.3; x86_64; ; ) MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201105231025.24501.pluto@agmk.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2962 Lines: 34 Hi, on quite heavy loaded (~20) dual opteron i'm observing from time to time a slow path warning: May 19 19:33:42 odra kernel: [105977.220094] ------------[ cut here ]------------ May 19 19:33:42 odra kernel: [105977.220102] WARNING: at /home/users/builder/rpm/BUILD/kernel-2.6.37.6/linux-2.6.37/fs/dcache.c:1996 prepend_path+0x150/0x160() May 19 19:33:42 odra kernel: [105977.220105] Hardware name: H8DGU May 19 19:33:42 odra kernel: [105977.220106] Root dentry has weird name <> May 19 19:33:42 odra kernel: [105977.220108] Modules linked in: nfs fscache binfmt_misc nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs ipmi_si ipmi_devintf ipmi_msghandler sch_sfq iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter xt_TCPMSS xt_tcpudp iptable_mangle ip_tables ip6table_filter ip6_tables x_tables ext4 jbd2 crc16 raid0 dm_mod uvesafb autofs4 dummy aoe usbhid hid sr_mod cdrom ohci_hcd ide_pci_generic pata_acpi ata_generic atiixp ide_core i2c_piix4 psmouse amd64_edac_mod ssb igb mmc_core ehci_hcd edac_core evdev pcmcia usbcore i2c_core pcspkr k10temp serio_raw pcmcia_core dca edac_mce_amd pata_atiixp hwmon processor sg shpchp pci_hotplug ghes hed button sd_mod crc_t10dif raid1 md_mod ext3 jbd mbcache ahci libahci libata scsi_mod [last unloaded: scsi_wait_scan] May 19 19:33:42 odra kernel: [105977.220165] Pid: 27482, comm: pidof xid: #0 Not tainted 2.6.37.6-2 #1 May 19 19:33:42 odra kernel: [105977.220167] Call Trace: May 19 19:33:42 odra kernel: [105977.220175] [] warn_slowpath_common+0x7a/0xb0 May 19 19:33:42 odra kernel: [105977.220179] [] warn_slowpath_fmt+0x41/0x50 May 19 19:33:42 odra kernel: [105977.220183] [] prepend_path+0x150/0x160 May 19 19:33:42 odra kernel: [105977.220186] [] path_with_deleted+0x7a/0x90 May 19 19:33:42 odra kernel: [105977.220189] [] d_path+0xb9/0xf0 May 19 19:33:42 odra kernel: [105977.220193] [] proc_pid_readlink+0x8f/0x1c0 May 19 19:33:42 odra kernel: [105977.220197] [] ? touch_atime+0x6c/0x1a0 May 19 19:33:42 odra kernel: [105977.220201] [] sys_readlinkat+0xb1/0xc0 May 19 19:33:42 odra kernel: [105977.220205] [] sys_readlink+0x16/0x20 May 19 19:33:42 odra kernel: [105977.220209] [] system_call_fastpath+0x16/0x1b May 19 19:33:42 odra kernel: [105977.220212] ---[ end trace 6e6e81a31199f8f8 ]--- May 19 19:33:42 odra kernel: [105977.221291] ------------[ cut here ]------------ i'm not sure that is a vanilla kernel problem becuase the vendor applies vserver/grsecurity patches. maybe this backtrace will be useful for developers. BR, Paweł. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/