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Date: Fri, 10 Feb 2012 09:01:57 +0100
From: Jens Axboe <axboe@...nel.dk>
To: Boaz Harrosh <bharrosh@...asas.com>
CC: Andrew Morton <akpm@...ux-foundation.org>,
Simon Arlott <simon@...e.lp0.eu>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-scsi@...r.kernel.org,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: Re: bsg_unregister_queue attempts to remove "bsg" sysfs link that
doesn't exist
On 02/10/2012 02:21 AM, Boaz Harrosh wrote:
> On 02/10/2012 01:24 AM, Andrew Morton wrote:
>> (cc's added)
>>
>> Kernel version appears to be 3.3-rc2.
>>
>> On Wed, 08 Feb 2012 20:54:16 +0000
>> Simon Arlott <simon@...e.lp0.eu> wrote:
>>
>>> I unplugged two hard drives and this happened:
>>> [168525.975223] mptbase: ioc0: LogInfo(0x31110d00): Originator={PL}, Code={Reset}, SubCode(0x0d00) cb_idx mptbase_reply
>>> [168527.976303] mptbase: ioc0: LogInfo(0x31110d00): Originator={PL}, Code={Reset}, SubCode(0x0d00) cb_idx mptbase_reply
>>> [168530.879028] end_device-8:2: mptsas: ioc0: removing sata device: fw_channel 0, fw_id 13, phy 7,sas_addr 0xde5c3f3bbc9bae8f
>>> [168530.879034] phy-8:7: mptsas: ioc0: delete phy 7, phy-obj (0xffff88027582b800)
>>> [168530.879045] port-8:2: mptsas: ioc0: delete port 2, sas_addr (0xde5c3f3bbc9bae8f)
>>> [168530.879525] sd 8:0:2:0: [sdh] Synchronizing SCSI cache
>>> [168530.879581] sd 8:0:2:0: [sdh] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
>>> [168530.879651] scsi target8:0:2: mptsas: ioc0: delete device: fw_channel 0, fw_id 13, phy 7, sas_addr 0xde5c3f3bbc9bae8f
>>> [168530.879706] ------------[ cut here ]------------
>>> [168530.879715] WARNING: at fs/sysfs/inode.c:323 sysfs_hash_and_remove+0x9c/0xb0()
>>> [168530.879717] Hardware name: empty
>>> [168530.879719] sysfs: can not remove 'bsg', no directory
>>> [168530.879721] Modules linked in: zaurus cdc_ether usbnet bnep rfcomm bridge stp fuse ext4 jbd2 nf_conntrack_ipv6 ipt_REJECT iptable_filter nf_defrag_ipv6 xt_state ip6t_REJECT iptable_mangle xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_dscp xt_string xt_owner xt_NFQUEUE xt_multiport xt_mark xt_iprange xt_hashlimit xt_conntrack xt_connmark nf_conntrack ip6_tables ip_tables x_tables btusb bluetooth crc16
>>> [168530.879757] Pid: 1578, comm: kworker/u:7 Tainted: G A 3.3.0-rc2+ #00119-gd8e94fc-dirty
>>> [168530.879761] Call Trace:
>>> [168530.879770] [<ffffffff8103a29a>] warn_slowpath_common+0x7a/0xb0
>>> [168530.879774] [<ffffffff8103a371>] warn_slowpath_fmt+0x41/0x50
>>> [168530.879778] [<ffffffff81154fbc>] sysfs_hash_and_remove+0x9c/0xb0
>>> [168530.879782] [<ffffffff81157a01>] sysfs_remove_link+0x21/0x30
>>> [168530.879788] [<ffffffff81274bb7>] bsg_unregister_queue+0x47/0xa0
>>> [168530.879795] [<ffffffff813fdc20>] sas_rphy_free+0xa0/0xd0
>>> [168530.879798] [<ffffffff813fe9e9>] sas_rphy_delete+0x19/0x20
>>> [168530.879801] [<ffffffff813fea15>] sas_port_delete+0x25/0x130
>>> [168530.879806] [<ffffffff814581c3>] mptsas_del_end_device+0x183/0x1c0
>>> [168530.879810] [<ffffffff8145aedc>] mptsas_hotplug_work+0x1ec/0x6a0
>>> [168530.879816] [<ffffffff810698e5>] ? idle_balance+0xf5/0x150
>>> [168530.879820] [<ffffffff81061779>] ? finish_task_switch+0x49/0xd0
>>> [168530.879824] [<ffffffff8145c183>] mptsas_firmware_event_work+0xa63/0xca0
>>> [168530.879829] [<ffffffff81046cf7>] ? lock_timer_base+0x37/0x70
>>> [168530.879832] [<ffffffff8145b720>] ? mptsas_send_ir2_event+0x110/0x110
>>> [168530.879836] [<ffffffff8104fd67>] process_one_work+0x117/0x3c0
>>> [168530.879839] [<ffffffff81050382>] worker_thread+0x172/0x3e0
>>> [168530.879844] [<ffffffff8105e651>] ? __wake_up_common+0x51/0x80
>>> [168530.879847] [<ffffffff81050210>] ? manage_workers+0x200/0x200
>>> [168530.879852] [<ffffffff81056796>] kthread+0x96/0xa0
>>> [168530.879858] [<ffffffff816d01d4>] kernel_thread_helper+0x4/0x10
>>> [168530.879862] [<ffffffff81056700>] ? kthread_freezable_should_stop+0x60/0x60
>>> [168530.879866] [<ffffffff816d01d0>] ? gs_change+0xb/0xb
>>> [168530.879869] ---[ end trace b116d5a791652b31 ]---
>>> [168532.879048] end_device-8:1: mptsas: ioc0: removing sata device: fw_channel 0, fw_id 12, phy 6,sas_addr 0xde5c3f3cc395aa8e
>>> [168532.879054] phy-8:6: mptsas: ioc0: delete phy 6, phy-obj (0xffff88027582b000)
>>> [168532.879065] port-8:1: mptsas: ioc0: delete port 1, sas_addr (0xde5c3f3cc395aa8e)
>>> [168532.879580] sd 8:0:1:0: [sdg] Synchronizing SCSI cache
>>> [168532.879692] sd 8:0:1:0: [sdg] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
>>> [168532.879877] scsi target8:0:1: mptsas: ioc0: delete device: fw_channel 0, fw_id 12, phy 6, sas_addr 0xde5c3f3cc395aa8e
>>> [168532.879999] ------------[ cut here ]------------
>>> [168532.880033] WARNING: at fs/sysfs/inode.c:323 sysfs_hash_and_remove+0x9c/0xb0()
>>> [168532.880038] Hardware name: empty
>>> [168532.880042] sysfs: can not remove 'bsg', no directory
>>> [168532.880045] Modules linked in: zaurus cdc_ether usbnet bnep rfcomm bridge stp fuse ext4 jbd2 nf_conntrack_ipv6 ipt_REJECT iptable_filter nf_defrag_ipv6 xt_state ip6t_REJECT iptable_mangle xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 ip6table_filter xt_dscp xt_string xt_owner xt_NFQUEUE xt_multiport xt_mark xt_iprange xt_hashlimit xt_conntrack xt_connmark nf_conntrack ip6_tables ip_tables x_tables btusb bluetooth crc16
>>> [168532.880108] Pid: 1578, comm: kworker/u:7 Tainted: G AW 3.3.0-rc2+ #00119-gd8e94fc-dirty
>>> [168532.880115] Call Trace:
>>> [168532.880128] [<ffffffff8103a29a>] warn_slowpath_common+0x7a/0xb0
>>> [168532.880136] [<ffffffff8103a371>] warn_slowpath_fmt+0x41/0x50
>>> [168532.880143] [<ffffffff81154fbc>] sysfs_hash_and_remove+0x9c/0xb0
>>> [168532.880152] [<ffffffff81157a01>] sysfs_remove_link+0x21/0x30
>>> [168532.880160] [<ffffffff81274bb7>] bsg_unregister_queue+0x47/0xa0
>>> [168532.880171] [<ffffffff813fdc20>] sas_rphy_free+0xa0/0xd0
>>> [168532.880177] [<ffffffff813fe9e9>] sas_rphy_delete+0x19/0x20
>>> [168532.880183] [<ffffffff813fea15>] sas_port_delete+0x25/0x130
>>> [168532.880192] [<ffffffff814581c3>] mptsas_del_end_device+0x183/0x1c0
>>> [168532.880218] [<ffffffff8145aedc>] mptsas_hotplug_work+0x1ec/0x6a0
>>> [168532.880227] [<ffffffff810698e5>] ? idle_balance+0xf5/0x150
>>> [168532.880234] [<ffffffff81061779>] ? finish_task_switch+0x49/0xd0
>>> [168532.880241] [<ffffffff8145c183>] mptsas_firmware_event_work+0xa63/0xca0
>>> [168532.880250] [<ffffffff81046cf7>] ? lock_timer_base+0x37/0x70
>>> [168532.880256] [<ffffffff8145b720>] ? mptsas_send_ir2_event+0x110/0x110
>>> [168532.880264] [<ffffffff8104fd67>] process_one_work+0x117/0x3c0
>>> [168532.880270] [<ffffffff81050382>] worker_thread+0x172/0x3e0
>>> [168532.880279] [<ffffffff8105e651>] ? __wake_up_common+0x51/0x80
>>> [168532.880285] [<ffffffff81050210>] ? manage_workers+0x200/0x200
>>> [168532.880293] [<ffffffff81056796>] kthread+0x96/0xa0
>>> [168532.880303] [<ffffffff816d01d4>] kernel_thread_helper+0x4/0x10
>>> [168532.880316] [<ffffffff81056700>] ? kthread_freezable_should_stop+0x60/0x60
>>> [168532.880329] [<ffffffff816d01d0>] ? gs_change+0xb/0xb
>>> [168532.880336] ---[ end trace b116d5a791652b32 ]---
>>
>
> It might be the same as the other reports see a fix here:
> https://lkml.org/lkml/2012/2/8/246
>
> See thread: device removal causes "sysfs: can not remove 'bsg', no directory"
Fix has been queued up for a few days, it'll go out today.
--
Jens Axboe
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