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Date: Sat, 20 Oct 2012 19:00:29 +0200 From: Richard Weinberger <richard@....at> To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> CC: linux-scsi@...r.kernel.org, JBottomley@...allels.com, gregkh@...uxfoundation.org Subject: WARNING: at fs/sysfs/inode.c:324 sysfs_hash_and_remove+0xa9/0xb0() Hi! I can reliably trigger the following warning by physically detaching my disk array after stopping md1. ---cut--- [ 149.780554] md: md1 stopped. [ 149.780559] md: unbind<sdh1> [ 149.782025] md: export_rdev(sdh1) [ 149.782039] md: unbind<sdg1> [ 149.786026] md: export_rdev(sdg1) [ 149.786038] md: unbind<sdf1> [ 149.786122] md: export_rdev(sdf1) [ 149.786135] md: unbind<sde1> [ 149.786220] md: export_rdev(sde1) [ 149.786232] md: unbind<sdd1> [ 149.786320] md: export_rdev(sdd1) [ 149.786332] md: unbind<sdc1> [ 149.786414] md: export_rdev(sdc1) [ 162.884735] sd 6:0:1:0: [sdc] Synchronizing SCSI cache [ 162.884778] sd 6:0:1:0: [sdc] [ 162.884781] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.885424] mpt2sas0: removing handle(0x000b), sas_addr(0x5003048001804ded) [ 162.887671] sd 6:0:2:0: [sdd] Synchronizing SCSI cache [ 162.887715] sd 6:0:2:0: [sdd] [ 162.887719] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.888733] mpt2sas0: removing handle(0x000c), sas_addr(0x5003048001804dee) [ 162.890003] sd 6:0:3:0: [sde] Synchronizing SCSI cache [ 162.890041] sd 6:0:3:0: [sde] [ 162.890044] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.890676] mpt2sas0: removing handle(0x000d), sas_addr(0x5003048001804df0) [ 162.891345] sd 6:0:4:0: [sdf] Synchronizing SCSI cache [ 162.891383] sd 6:0:4:0: [sdf] [ 162.891385] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.892590] mpt2sas0: removing handle(0x000e), sas_addr(0x5003048001804df1) [ 162.896152] sd 6:0:5:0: [sdg] Synchronizing SCSI cache [ 162.896197] sd 6:0:5:0: [sdg] [ 162.896201] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.896891] mpt2sas0: removing handle(0x000f), sas_addr(0x5003048001804df4) [ 162.896896] mpt2sas0: removing handle(0x000a), sas_addr(0x5003048001804dfd) [ 162.896899] mpt2sas0: removing handle(0x0010), sas_addr(0x5003048001804df7) [ 162.898097] ------------[ cut here ]------------ [ 162.898105] WARNING: at /home/abuild/rpmbuild/BUILD/kernel-vanilla-3.6.2/linux-3.6/fs/sysfs/inode.c:324 sysfs_hash_and_remove+0xa9/0xb0() [ 162.898107] Hardware name: X9SCL/X9SCM [ 162.898108] sysfs: can not remove 'device', no directory [ 162.898110] Modules linked in: ses enclosure cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf coretemp crc32c_intel ghash_clmulni_intel i2c_i801 iTCO_wdt kvm_intel sg iTCO_vendor_support e1000e lpc_ich mfd_core serio_raw joydev sr_mod kvm aesni_intel button cdrom ablk_helper cryptd video aes_x86_64 pcspkr microcode autofs4 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid10 raid1 hid_generic usbhid raid0 mgag200 ttm drm_kms_helper drm ehci_hcd i2c_algo_bit sysimgblt sysfillrect syscopyarea usbcore usb_common thermal fan processor thermal_sys scsi_dh_emc scsi_dh_rdac scsi_dh_alua scsi_dh_hp_sw scsi_dh mpt2sas scsi_transport_sas raid_class [ 162.898159] Pid: 84, comm: kworker/u:7 Not tainted 3.6.2-7-vanilla #1 [ 162.898161] Call Trace: [ 162.898166] [<ffffffff811c9600>] ? sysfs_hash_and_remove+0xa0/0xb0 [ 162.898172] [<ffffffff8104095a>] warn_slowpath_common+0x7a/0xb0 [ 162.898176] [<ffffffff81040a31>] warn_slowpath_fmt+0x41/0x50 [ 162.898180] [<ffffffff811c9609>] sysfs_hash_and_remove+0xa9/0xb0 [ 162.898184] [<ffffffff811cb911>] sysfs_remove_link+0x21/0x30 [ 162.898189] [<ffffffffa027e8a8>] enclosure_remove_links+0x68/0x80 [enclosure] [ 162.898192] [<ffffffff811cb1ae>] ? remove_dir+0x2e/0x40 [ 162.898196] [<ffffffffa027e9af>] enclosure_component_release+0x1f/0x40 [enclosure] [ 162.898200] [<ffffffff81398172>] device_release+0x22/0x90 [ 162.898205] [<ffffffff812cd282>] kobject_cleanup+0x82/0x1b0 [ 162.898209] [<ffffffff812cd10b>] kobject_put+0x2b/0x60 [ 162.898212] [<ffffffff81397ee2>] put_device+0x12/0x20 [ 162.898215] [<ffffffff81399105>] device_unregister+0x25/0x60 [ 162.898218] [<ffffffffa027e5a2>] enclosure_unregister+0x82/0xb0 [enclosure] [ 162.898222] [<ffffffffa028708d>] ses_intf_remove+0x7d/0xe0 [ses] [ 162.898226] [<ffffffff81398ff9>] device_del+0xc9/0x1b0 [ 162.898230] [<ffffffff813990fd>] device_unregister+0x1d/0x60 [ 162.898236] [<ffffffff813c1e15>] __scsi_remove_device+0xa5/0xc0 [ 162.898241] [<ffffffff813c1e5a>] scsi_remove_device+0x2a/0x40 [ 162.898246] [<ffffffff813c1fd8>] scsi_remove_target+0x148/0x200 [ 162.898256] [<ffffffffa0008e75>] sas_rphy_remove+0x55/0x60 [scsi_transport_sas] [ 162.898264] [<ffffffffa000b0d1>] sas_rphy_delete+0x11/0x20 [scsi_transport_sas] [ 162.898273] [<ffffffffa000b105>] sas_port_delete+0x25/0x130 [scsi_transport_sas] [ 162.898281] [<ffffffffa000b210>] ? sas_port_delete+0x130/0x130 [scsi_transport_sas] [ 162.898290] [<ffffffffa000b255>] do_sas_phy_delete+0x45/0x50 [scsi_transport_sas] [ 162.898294] [<ffffffff81398216>] device_for_each_child+0x36/0x70 [ 162.898302] [<ffffffffa0008dfa>] sas_remove_children+0x1a/0x40 [scsi_transport_sas] [ 162.898310] [<ffffffffa0008e6a>] sas_rphy_remove+0x4a/0x60 [scsi_transport_sas] [ 162.898318] [<ffffffffa000b0d1>] sas_rphy_delete+0x11/0x20 [scsi_transport_sas] [ 162.898325] [<ffffffffa000b105>] sas_port_delete+0x25/0x130 [scsi_transport_sas] [ 162.898337] [<ffffffffa0030199>] mpt2sas_transport_port_remove+0x1b9/0x1d0 [mpt2sas] [ 162.898348] [<ffffffffa002adf0>] _scsih_expander_node_remove+0x80/0xc0 [mpt2sas] [ 162.898357] [<ffffffffa002aefc>] mpt2sas_expander_remove+0xcc/0xe0 [mpt2sas] [ 162.898367] [<ffffffffa002c0f7>] _firmware_event_work+0x11e7/0x14b0 [mpt2sas] [ 162.898372] [<ffffffff8105b968>] ? cwq_activate_delayed_work+0x38/0x80 [ 162.898376] [<ffffffff8105bb81>] process_one_work+0x131/0x4d0 [ 162.898385] [<ffffffffa002af10>] ? mpt2sas_expander_remove+0xe0/0xe0 [mpt2sas] [ 162.898414] [<ffffffff8105c80e>] worker_thread+0x15e/0x470 [ 162.898418] [<ffffffff8105c6b0>] ? manage_workers+0x2f0/0x2f0 [ 162.898424] [<ffffffff8106277e>] kthread+0x8e/0xa0 [ 162.898431] [<ffffffff81565d24>] kernel_thread_helper+0x4/0x10 [ 162.898436] [<ffffffff810626f0>] ? kthread_freezable_should_stop+0x60/0x60 [ 162.898441] [<ffffffff81565d20>] ? gs_change+0xb/0xb [ 162.898443] ---[ end trace 79e761c96dd48155 ]--- [ 162.900031] sd 6:0:6:0: [sdh] Synchronizing SCSI cache [ 162.900075] sd 6:0:6:0: [sdh] [ 162.900077] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [ 162.910855] mpt2sas0: expander_remove: handle(0x0009), sas_addr(0x5003048001804dff) ---cut--- Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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