From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 74341] New: WARNING: CPU: 4 PID: 3686 at fs/sysfs/group.c:216
sysfs_remove_group
Date: Thu, 17 Apr 2014 19:47:13 +0000
Message-ID:
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Return-path:
Received: from mail.kernel.org ([198.145.19.201]:36184 "EHLO mail.kernel.org"
rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
id S1751725AbaDQTrS (ORCPT );
Thu, 17 Apr 2014 15:47:18 -0400
Received: from mail.kernel.org (localhost [127.0.0.1])
by mail.kernel.org (Postfix) with ESMTP id A256B20306
for ; Thu, 17 Apr 2014 19:47:16 +0000 (UTC)
Received: from bugzilla2.web.kernel.org (bugzilla2.web.kernel.org [172.20.200.52])
by mail.kernel.org (Postfix) with ESMTP id C70AA202C8
for ; Thu, 17 Apr 2014 19:47:14 +0000 (UTC)
Sender: linux-scsi-owner@vger.kernel.org
List-Id: linux-scsi@vger.kernel.org
To: linux-scsi@vger.kernel.org
https://bugzilla.kernel.org/show_bug.cgi?id=74341
Bug ID: 74341
Summary: WARNING: CPU: 4 PID: 3686 at fs/sysfs/group.c:216
sysfs_remove_group
Product: IO/Storage
Version: 2.5
Kernel Version: 3.14.1
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: SCSI
Assignee: linux-scsi@vger.kernel.org
Reporter: casteyde.christian@free.fr
Regression: No
Kernel 3.14.1
Core i7 64 bits / 6GB
GCC 4.8.2
I recently got this warning while accessing an external HDD driver connected
via USB to the laptop:
sd 8:0:0:0: [sdc] Attached SCSI disk
usb 4-2: USB disconnect, device number 3
------------[ cut here ]------------
WARNING: CPU: 4 PID: 3686 at fs/sysfs/group.c:216
sysfs_remove_group+0x8b/0x90()
sysfs group ffffffff81b96ea0 not found for kobject 'target8:0:0'
Modules linked in:
CPU: 4 PID: 3686 Comm: umount Not tainted 3.14.1 #1
Hardware name: Acer Aspire 7750G/JE70_HR, BIOS V1.07 03/02/2011
0000000000000009 ffff880075821b18 ffffffff817fd0d1 ffff880075821b60
ffff880075821b50 ffffffff81079003 0000000000000000 ffffffff81b96ea0
ffff8801a6fe3c38 ffff8801a11c5190 ffff8800aabb5800 ffff880075821bb0
Call Trace:
[] dump_stack+0x4d/0x6f
[] warn_slowpath_common+0x73/0x90
[] warn_slowpath_fmt+0x47/0x50
[] ? kernfs_find_and_get_ns+0x43/0x50
[] sysfs_remove_group+0x8b/0x90
[] dpm_sysfs_remove+0x3e/0x50
[] device_del+0x40/0x1b0
[] scsi_target_reap_usercontext+0x22/0x30
[] execute_in_process_context+0x5f/0x70
[] scsi_target_reap+0xbc/0xe0
[] scsi_device_dev_release_usercontext+0x188/0x1c0
[] execute_in_process_context+0x5f/0x70
[] scsi_device_dev_release+0x17/0x20
[] device_release+0x2d/0xa0
[] kobject_cleanup+0x38/0x70
[] kobject_put+0x30/0x60
[] put_device+0x12/0x20
[] scsi_device_put+0x36/0x50
[] scsi_disk_put+0x2b/0x40
[] sd_release+0x2c/0x60
[] __blkdev_put+0x16c/0x1a0
[] __blkdev_put+0x109/0x1a0
[] blkdev_put+0x49/0x130
[] kill_block_super+0x3f/0x70
[] fuse_kill_sb_blk+0x42/0x50
[] deactivate_locked_super+0x2d/0x50
[] deactivate_super+0x41/0x60
[] mntput_no_expire+0xe0/0x170
[] SyS_umount+0x8c/0x3a0
[] ? SyS_rt_sigprocmask+0x62/0xb0
[] system_call_fastpath+0x16/0x1b
---[ end trace adb70c2dc2d071d1 ]---
usb 4-2: new SuperSpeed USB device number 4 using xhci_hcd
usb 4-2: Parent hub missing LPM exit latency info. Power management will be
impacted.
usb 4-2: New USB device found, idVendor=0480, idProduct=a006
usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 4-2: Product: External USB 3.0
usb 4-2: Manufacturer: Toshiba
usb 4-2: SerialNumber: 2012030662297
usb-storage 4-2:1.0: USB Mass Storage device detected
scsi9 : usb-storage 4-2:1.0
scsi 9:0:0:0: Direct-Access TOSHIBA External USB 3.0 0001 PQ: 0 ANSI: 6
sd 9:0:0:0: Attached scsi generic sg3 type 0
sd 9:0:0:0: [sdc] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 9:0:0:0: [sdc] Write Protect is off
sd 9:0:0:0: [sdc] Mode Sense: 33 00 00 08
sd 9:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support
DPO or FUA
sdc: sdc1
sd 9:0:0:0: [sdc] Attached SCSI disk
The disk seemed to go to sleep and disconnect while I was looking at files on
it. Then I tried to remount it. I looked at dmesg after so I don't know when
exactly the warning occurred.
--
You are receiving this mail because:
You are the assignee for the bug.