Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754553AbYHLVzn (ORCPT ); Tue, 12 Aug 2008 17:55:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754320AbYHLVzU (ORCPT ); Tue, 12 Aug 2008 17:55:20 -0400 Received: from outbound-va3.frontbridge.com ([216.32.180.16]:58832 "EHLO VA3EHSOBE001.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754273AbYHLVzR (ORCPT ); Tue, 12 Aug 2008 17:55:17 -0400 X-BigFish: VPS4(z21eW16d9mz4cd6kzz10d3izzz32i6bh43j68o) X-Spam-TCS-SCL: 7:0 X-FB-SS: 5, X-WSS-ID: 0K5ICVK-02-673-01 From: Mark Langsdorf To: linux-kernel@vger.kernel.org Subject: Warning in during hotplug on 2.6.27-rc2-git5 Date: Tue, 12 Aug 2008 17:00:20 -0500 User-Agent: KMail/1.9.9 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-ID: <200808121700.20369.mark.langsdorf@amd.com> X-OriginalArrivalTime: 12 Aug 2008 21:55:08.0960 (UTC) FILETIME=[16668200:01C8FCC6] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6519 Lines: 120 I'm seeing the following error message when I hotunplug and replug a cpu in 2.6.27-rc2-git5. The system becomes unstable almost immediately afterwards. ------------[ cut here ]------------ WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x33/0x39() sysfs: duplicate filename 'machinecheck4' can not be created Modules linked in: cpufreq_ondemand cpufreq_userspace cpufreq_powersave powernow_k8 freq_table sr_mod af_packet button battery ac loop dm_mod usb_storage usbhid ff_memless tg3 libphy ide_pci_generic shpchp ehci_hcd i2c_piix4 i2c_core pci_hotplug ohci_hcd usbcore ide_cd_mod cdrom floppy mptctl ext3 jbd edd fan thermal processor mptsas mptscsih mptbase scsi_transport_sas sg sata_svw libata dock serverworks sd_mod scsi_mod ide_disk ide_core Pid: 4838, comm: bash Not tainted 2.6.27-rc2-git5-pn_test #2 Call Trace: [] warn_slowpath+0xb4/0xde [] rb_insert_color+0x61/0xda [] rb_insert_color+0x61/0xda [] vsnprintf+0x568/0x5b1 [] hrtick_start_fair+0x10d/0x171 [] idr_get_empty_slot+0x164/0x243 [] ida_get_new_above+0xf6/0x182 [] find_inode+0x28/0x6d [] sysfs_ilookup_test+0x0/0xf [] sysfs_find_dirent+0x1b/0x2f [] sysfs_add_one+0x33/0x39 [] create_dir+0x4f/0x87 [] sysfs_create_dir+0x35/0x4a [] kobject_get+0x12/0x17 [] kobject_add_internal+0xcf/0x18a [] kobject_init_and_add+0x5b/0x68 [] set_cpus_allowed_ptr+0x119/0x126 [] sysdev_register+0x5a/0xb5 [] mce_create_device+0xb4/0x156 [] mce_cpu_callback+0x2b/0x9b [] notifier_call_chain+0x29/0x4c [] _cpu_up+0xc8/0x102 [] cpu_up+0x54/0x77 [] store_online+0x43/0x67 [] sysfs_write_file+0xd2/0x110 [] vfs_write+0xad/0x156 [] sys_write+0x45/0x6e [] system_call_fastpath+0x16/0x1b ---[ end trace 48036b92036180e0 ]--- kobject_add_internal failed for machinecheck4 with -EEXIST, don't try to register things with the same name in the same directory. Pid: 4838, comm: bash Tainted: G W 2.6.27-rc2-git5-pn_test #2 Call Trace: [] kobject_add_internal+0x14b/0x18a [] kobject_init_and_add+0x5b/0x68 [] set_cpus_allowed_ptr+0x119/0x126 [] sysdev_register+0x5a/0xb5 [] mce_create_device+0xb4/0x156 [] mce_cpu_callback+0x2b/0x9b [] notifier_call_chain+0x29/0x4c [] _cpu_up+0xc8/0x102 [] cpu_up+0x54/0x77 [] store_online+0x43/0x67 [] sysfs_write_file+0xd2/0x110 [] vfs_write+0xad/0x156 [] sys_write+0x45/0x6e [] system_call_fastpath+0x16/0x1b BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 IP: [] sysfs_addrm_start+0x2d/0x99 PGD 22a87c067 PUD 22c9ef067 PMD 0 Oops: 0000 [1] SMP CPU 1 Modules linked in: cpufreq_ondemand cpufreq_userspace cpufreq_powersave powernow_k8 freq_table sr_mod af_packet button battery ac loop dm_mod usb_storage usbhid ff_memless tg3 libphy ide_pci_generic shpchp ehci_hcd i2c_piix4 i2c_core pci_hotplug ohci_hcd usbcore ide_cd_mod cdrom floppy mptctl ext3 jbd edd fan thermal processor mptsas mptscsih mptbase scsi_transport_sas sg sata_svw libata dock serverworks sd_mod scsi_mod ide_disk ide_core Pid: 4838, comm: bash Tainted: G W 2.6.27-rc2-git5-pn_test #2 RIP: 0010:[] [] sysfs_addrm_start+0x2d/0x99 RSP: 0018:ffff88022d0dbb38 EFLAGS: 00010246 RAX: ffff880028047710 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000acb2c4dfcc0 RSI: 0000000000000000 RDI: ffff88022fc3b000 RBP: ffff88022d0dbb58 R08: 0000000000000080 R09: ffff88022d0dba58 R10: ffff880028047710 R11: 00000acb2c4dfcc0 R12: 00000000fffffff4 R13: 0000000000000000 R14: ffff88022d0dbbb0 R15: 0000000000000004 FS: 00007f106d7496d0(0000) GS:ffff88022f0938c0(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000038 CR3: 000000022c8d0000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process bash (pid: 4838, threadinfo ffff88022d0da000, task ffff88022d6b4d90) Stack: 00000000fffffff4 ffff88022e3dfc80 ffff88022dc0c870 ffffffff802d2ed8 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffff88022e3dfc80 ffff88022d0dbd18 00000000fffffffe 0000000000000004 Call Trace: [] ? create_dir+0x44/0x87 [] ? sysfs_create_dir+0x35/0x4a [] ? kobject_get+0x12/0x17 [] ? kobject_add_internal+0xcf/0x18a [] ? kobject_add+0x74/0x7c [] ? thread_return+0x3e/0xa3 [] ? kobject_init_internal+0x12/0x2c [] ? kobject_init+0x41/0x69 [] ? kobject_create+0x2b/0x30 [] ? kobject_create_and_add+0x2e/0x5b [] ? threshold_create_device+0x1aa/0x32a [] ? threshold_cpu_callback+0x5f/0x2ca [] ? mce_create_device+0xb4/0x156 [] ? notifier_call_chain+0x29/0x4c [] ? _cpu_up+0xc8/0x102 [] ? cpu_up+0x54/0x77 [] ? store_online+0x43/0x67 [] ? sysfs_write_file+0xd2/0x110 [] ? vfs_write+0xad/0x156 [] ? sys_write+0x45/0x6e [] ? system_call_fastpath+0x16/0x1b Code: c0 b9 08 00 00 00 fc 53 48 89 fd 48 89 f3 48 83 ec 08 f3 ab 48 89 75 00 48 c7 c7 e0 e7 51 80 e8 c2 9c 14 00 48 8b 3d 57 45 37 00 <48> 8b 73 38 48 89 d9 48 c7 c2 2c 27 2d 80 e8 1e db fc ff 48 85 RIP [] sysfs_addrm_start+0x2d/0x99 RSP CR2: 0000000000000038 ---[ end trace 48036b92036180e0 ]--- -- 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/