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Date: Mon, 21 Sep 2015 10:26:40 +0300 (EEST)
From: Meelis Roos <mroos@...ux.ee>
To: Ming Lei <tom.leiming@...il.com>
cc: Linux Kernel list <linux-kernel@...r.kernel.org>,
sparclinux@...r.kernel.org, Akinobu Mita <akinobu.mita@...il.com>
Subject: Re: blk_mq_register_disk: kobject (00000000009f2dd8): tried to init
an initialized object, something is seriously wrong.
> On Tue, Sep 15, 2015 at 3:06 AM, Meelis Roos <mroos@...ux.ee> wrote:
> > This is 4.3.0-rc1 on Sun E220R (dual-CPU sparc64). Sometimes it boots,
> > sometimes it fails to boot with looping errors and finally a watchdog
> > timeout. This console log from a failure. Config is below.
> >
[...]
> > [ 90.956986] netconsole: network logging started
> > [ 91.011243] rtc-m48t59 rtc-m48t59.0: setting system clock to 2015-09-14 12:31:56 UTC (1442233916)? 91.636785] scsi 0:0:0:0: Direct-Access QUANTUM ATLAS10K3_36_SCA 020W PQ: 0 ANSI: 3
> > [ 91.732863] scsi target0:0:0: tagged command queuing enabled, command queue depth 16.
> > [ 91.826592] scsi target0:0:0: Beginning Domain Validation
> > [ 91.894554] scsi target0:0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 16)
> > [ 91.983049] scsi target0:0:0: Domain Validation skipping write tests
> > [ 92.058187] scsi target0:0:0: Ending Domain Validation
> > [ 93.590588] scsi 0:0:6:0: CD-ROM TOSHIBA XM6201TASUN32XCD 1103 PQ: 0 ANSI: 2
> > [ 93.686649] scsi target0:0:6: Beginning Domain Validation
> > [ 93.753328] scsi target0:0:6: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 16)
> > [ 93.836962] scsi target0:0:6: Domain Validation skipping write tests
> > [ 93.912162] scsi target0:0:6: Ending Domain Validation
> > [ 96.317514] sd 0:0:0:0: [sda] 71833096 512-byte logical blocks: (36.7 GB/34.2 GiB)
> > [ 96.408799] sd 0:0:0:0: [sda] Write Protect is off
> > [ 96.465258] sd 0:0:0:0: [sda] Mode Sense: e5 00 10 08
> > [ 96.527504] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
> > [ 96.641946] sda: sda1 sda2 sda3 sda4
> > [ 96.688204] kworker/u4:0 (570) used greatest stack depth: 9104 bytes left
> > [ 96.709472] sd 0:0:0:0: [sda] Attached SCSI disk
> > [ 98.020598] EXT4-fs (sda2): couldn't mount as ext3 due to feature incompatibilities
> > [ 98.112011] EXT4-fs (sda2): couldn't mount as ext2 due to feature incompatibilities
> > [ 98.227702] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> > [ 98.318525] VFS: Mounted root (ext4 filesystem) readonly on device 259:262144.
> > [ 98.436651] devtmpfs: mounted
> > Mount failed for selinuxfs on /sys/fs/selinux: No such file or directory
> > g??????ɹ?????ѥ???H? 99.248602] stty (586) used greatest stack depth: 8216 bytes left
> > [ 99.484619] tput (590) used greatest stack depth: 8088 bytes left
> > [info] Using makefile-style concurrent boot in runlevel S.
> > [ 100.116965] ps (660) used greatest stack depth: 7728 bytes left
> > unparseable line (c! /dev/autofs 0600 - - - 10:235)
> > unparseable line (c! /dev/fuse 0600 - - - 10:229)
> > unparseable line (c! /dev/cuse 0600 - - - 10:203)
> > unparse[ 100.356492] random: udevd urandom read with 18 bits of entropy available
> > able line (c! /dev/loop-control 0600 - - - 10:237)
> > unparseable line (c! /dev/net/tun 0600 - - - 10:200)
> > unparseable line (c! /dev/uhid 0600 - - - 10:239)
> > [....] Starting the hotplug events dispatcher: udevdstarting version 218
> > [ ok .
> > [....] Synthesizing the initial hotplug events...[ ok done.
> > [ 101.056708] hwclock (716) used greatest stack depth: 7608 bytes left
> > [....] Waiting f[ 101.148930] sd 0:0:0:0: Attached scsi generic sg0 type 0
> > [ 101.212727] scsi 0:0:6:0: Attached scsi generic sg1 type 5
> > or [ 101.281691] PCI: Enabling device: (0000:00:01.1), cmd 2
> > [ 101.289700] sr 0:0:6:0: [sr0] scsi-1 drive
> > [ 101.289710] cdrom: Uniform CD-ROM driver Revision: 3.20
> > [ 101.348345] sr 0:0:6:0: Attached scsi CD-ROM sr0
> > [ 101.393029] cdrom_id (726) used greatest stack depth: 7456 bytes left
> > [ 101.587083] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@...emloft.net)
> > /d[ 101.678086] eth0: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet 08:00:20:c7:a3:81
> > ev to be fully populated...[ ok done.
> > [....] Setting preliminary keymap...[ ok done.
> > [....] Activating swap...[ 104.354886] Adding 1582392k swap on /dev/sda4. Priority:-1 extents:1 across:1582392k
> > [ ok done.
> > [ 104.582832] EXT4-fs (sda2): re-mounted. Opts: (null)
> > [....] Checking root file system...fsck from util-linux 2.26.2
> > /dev/sda2: clean, 134168/2142112 files, 1452575/8558628 blocks
> > [ ok 104.917474] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> > 25hdone.
> > [....] Activating lvm and md swap...[ ok done.
> > [....] Checking file systems...fsck from util-linux 2.26.2
> > /dev/sda1: clean, 40/48192 files, 43342/96390 blocks
> > [ ok done.
> > [....] Cleaning up temporary files... /tmp[ ok .
> > [ 106.370834] kobject (00000000009f2dd8): tried to init an initialized object, something is seriously wrong.
>
> Akinobu found there is one race between CPU hotplug and add_disk, maybe
> you can try the patch in the following link to see if it can fix your issue.
>
> https://lkml.org/lkml/2015/7/18/99
What version is it against? Does not compile against 4.3-rc1:
CC block/blk-mq-sysfs.o
block/blk-mq-sysfs.c: In function ‘blk_mq_unregister_disk’:
block/blk-mq-sysfs.c:401:3: error: ‘struct request_queue’ has no member named ‘mq_sysfs_init_done’
q->mq_sysfs_init_done = false;
^
block/blk-mq-sysfs.c: In function ‘blk_mq_register_disk’:
block/blk-mq-sysfs.c:452:4: error: ‘struct request_queue’ has no member named ‘mq_sysfs_init_done’
q->mq_sysfs_init_done = true;
^
block/blk-mq-sysfs.c: In function ‘blk_mq_sysfs_unregister’:
block/blk-mq-sysfs.c:465:8: error: ‘struct request_queue’ has no member named ‘mq_sysfs_init_done’
if (!q->mq_sysfs_init_done)
^
block/blk-mq-sysfs.c: In function ‘blk_mq_sysfs_register’:
block/blk-mq-sysfs.c:477:8: error: ‘struct request_queue’ has no member named ‘mq_sysfs_init_done’
if (!q->mq_sysfs_init_done)
^
scripts/Makefile.build:258: recipe for target 'block/blk-mq-sysfs.o' failed
--
Meelis Roos (mroos@...ux.ee)
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