Message-ID: <20080625215324.GA1562@elf.ucw.cz>
Date:	Wed, 25 Jun 2008 23:53:24 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	kernel list <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	linux-pcmcia@...ts.infradead.org, bzolnier@...il.com,
	linux-ide@...r.kernel.org, Greg KH <greg@...ah.com>
Subject: Re: [regression] Re: 2.6.26-rc6: pcmcia stopped working

On Wed 2008-06-25 13:01:05, Pavel Machek wrote:
> On Wed 2008-06-25 12:23:47, Pavel Machek wrote:
> > On Mon 2008-06-23 10:30:46, Dominik Brodowski wrote:
> > > On Mon, Jun 23, 2008 at 10:18:11AM +0200, Pavel Machek wrote:
> > > > Hi!
> > > > 
> > > > > > After s2ram and resume, CF card in PCMCIA-to-CF slot is no longer
> > > > > > detected.
> > > > > 
> > > > > might this be related to:
> > > > > http://bugzilla.kernel.org/show_bug.cgi?id=10957 ? There didn't change
> > > > > anything with regard to pcmcia between -rc3 and -rc6...
> > > > 
> > > > I'm pretty sure it worked in 2.6.25; I don't know if it worked in
> > > > -rc3, or not.
> > > > 
> > > > I don't even see note about card insertion in dmesg, so I figured out
> > > > it is probably pcmcia-core problem (or something deeper).
> > > 
> > > Well, even since 2.6.25 not much changed in PCMCIA-land, so...
> > 
> > Actually, it is worse. On thinkpad, PCMCIA card is only detected
> > once. If I remove it and reinsert it, it will not be detected, and
> > machine will not reboot.
> > 
> > Thinkpad X60.
> 
> Hmm, but with -rc8, I actually got some useful info:
> 
> kjournald starting.  Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> VFS: Mounted root (ext3 filesystem) readonly.
> debug: unmapping init memory c099f000..c09ef000
> Write protecting the kernel text: 5320k
> Write protecting the kernel read-only data: 1916k
> Failed to execute /tmp/swsusp-init.  Attempting defaults...
> EXT3 FS on sda4, internal journal
> Adding 987988k swap on /dev/sda1.  Priority:-1 extents:1 across:987988k
> kjournald starting.  Commit interval 5 seconds
> EXT3 FS on sda2, internal journal
> EXT3-fs: mounted filesystem with ordered data mode.
> pcmcia: Detected deprecated PCMCIA ioctl usage from process: hwclock.
> pcmcia: This interface will soon be removed from the kernel; please expect breakage unless you upgrade to new tools.
> pcmcia: see http://www.kernel.org/pub/linux/utils/kernel/pcmcia/pcmcia.html for details.
> eth0: Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
> coda_read_super: Bad mount data
> coda_read_super: device index: 0
> coda_read_super: rootfid is (01234567.ffffffff.08051a38.00000000)
> coda: Unexpected interruption.
> Failure of coda_cnode_make for root: error -4
> pccard: PCMCIA card inserted into slot 0
> cs: memory probe 0x0c0000-0x0fffff: excluding 0xc0000-0xd3fff 0xdc000-0xfffff
> cs: memory probe 0x60000000-0x60ffffff: excluding 0x60000000-0x60ffffff
> cs: memory probe 0xe0000000-0xe3ffffff: excluding 0xe0000000-0xe3ffffff
> cs: memory probe 0xe4300000-0xe7ffffff: excluding 0xe4300000-0xe46cffff 0xe4e70000-0xe523ffff 0xe5db0000-0xe617ffff 0xe6cf0000-0xe70bffff
> pcmcia: registering new device pcmcia0.0
> Probing IDE interface ide1...
> hdc: SunDisk SDP3B-20, CFA DISK drive
> hdd: SunDisk SDP3B-20, CFA DISK drive
> ide-probe: ignoring undecoded slave
> ide1 at 0x9100-0x9107,0x910e on irq 16
> hdc: max request size: 128KiB
> hdc: 40960 sectors (20 MB) w/1KiB Cache, CHS=640/2/32
>  hdc:hdc: set_geometry_intr: status=0x51 { DriveReady SeekComplete Error }
> hdc: set_geometry_intr: error=0x04 { DriveStatusError }
> ide: failed opcode was: unknown
>  hdc1 hdc3
> ide-cs: hdc: Vpp = 0.0
> Clocksource tsc unstable (delta = -68835537 ns)
> pccard: card ejected from slot 0
> INFO: task pccardd:1121 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> pccardd       D f6dd1e1c     0  1121      2
>        f6dd1e30 00000086 00000002 f6dd1e1c f6dd1e10 00000000 c2015e80 c2015e80 
>        c09113e0 00000286 00000286 f72d13b8 f72d1618 c2015e80 f6dd0000 f6afedc0 
>        ffff03a9 f6bcb458 00000000 c02bd187 00000000 f6dd1e4c 00000003 00000000 
> Call Trace:
>  [<c02bd187>] sysfs_addrm_finish+0x1a7/0x1e0
>  [<c072edec>] schedule_timeout+0x7c/0xd0
>  [<c02bd1e7>] remove_dir+0x27/0x40
>  [<c0730b9a>] _spin_lock_irq+0x2a/0x40
>  [<c072e240>] wait_for_common+0xc0/0x130
>  [<c021f5c0>] default_wake_function+0x0/0x10
>  [<c04d489f>] ide_unregister+0xcf/0x150
>  [<c04e5671>] ide_release+0x21/0x40
>  [<c04e56b9>] ide_detach+0x29/0x80
>  [<c0520146>] pcmcia_device_remove+0x36/0xe0
>  [<c0423116>] __device_release_driver+0x56/0x90
>  [<c0423210>] device_release_driver+0x20/0x40
>  [<c04225bb>] bus_remove_device+0x6b/0x90
>  [<c04210cf>] device_del+0xcf/0x140
>  [<c0421148>] device_unregister+0x8/0x10
>  [<c051fb7c>] pcmcia_card_remove+0x6c/0x80
>  [<c0520a34>] ds_event+0x64/0xb0
>  [<c051c12f>] pccardd+0x16f/0x2a0
>  [<c051b7fb>] send_event+0x4b/0x80
>  [<c051ba6b>] socket_shutdown+0xb/0xd0
>  [<c051bb4c>] socket_remove+0x1c/0x30
>  [<c051c1fe>] pccardd+0x23e/0x2a0
>  [<c021f5c0>] default_wake_function+0x0/0x10
>  [<c051bfc0>] pccardd+0x0/0x2a0
>  [<c023c3f2>] kthread+0x42/0x70
>  [<c023c3b0>] kthread+0x0/0x70
>  [<c02047ab>] kernel_thread_helper+0x7/0x1c
>  [<c04216f2>] device_create_vargs+0x42/0xd0
>  =======================
> no locks held by pccardd/1121.
> INFO: task pccardd:1121 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> pccardd       D f6dd1e1c     0  1121      2
>        f6dd1e30 00000086 00000002 f6dd1e1c f6dd1e10 00000000 c2015e80 c2015e80 
>        c09113e0 00000286 00000286 f72d13b8 f72d1618 c2015e80 f6dd0000 f6afedc0 
>        ffff03a9 f6bcb458 00000000 c02bd187 00000000 f6dd1e4c 00000003 00000000 
> Call Trace:
>  [<c02bd187>] sysfs_addrm_finish+0x1a7/0x1e0
>  [<c072edec>] schedule_timeout+0x7c/0xd0
>  [<c02bd1e7>] remove_dir+0x27/0x40
>  [<c0730b9a>] _spin_lock_irq+0x2a/0x40
>  [<c072e240>] wait_for_common+0xc0/0x130
>  [<c021f5c0>] default_wake_function+0x0/0x10
>  [<c04d489f>] ide_unregister+0xcf/0x150
>  [<c04e5671>] ide_release+0x21/0x40
>  [<c04e56b9>] ide_detach+0x29/0x80
>  [<c0520146>] pcmcia_device_remove+0x36/0xe0
>  [<c0423116>] __device_release_driver+0x56/0x90
>  [<c0423210>] device_release_driver+0x20/0x40
>  [<c04225bb>] bus_remove_device+0x6b/0x90
>  [<c04210cf>] device_del+0xcf/0x140
>  [<c0421148>] device_unregister+0x8/0x10
>  [<c051fb7c>] pcmcia_card_remove+0x6c/0x80
>  [<c0520a34>] ds_event+0x64/0xb0
>  [<c051c12f>] pccardd+0x16f/0x2a0
>  [<c051b7fb>] send_event+0x4b/0x80
>  [<c051ba6b>] socket_shutdown+0xb/0xd0
>  [<c051bb4c>] socket_remove+0x1c/0x30
>  [<c051c1fe>] pccardd+0x23e/0x2a0
>  [<c021f5c0>] default_wake_function+0x0/0x10
>  [<c051bfc0>] pccardd+0x0/0x2a0
>  [<c023c3f2>] kthread+0x42/0x70
>  [<c023c3b0>] kthread+0x0/0x70
>  [<c02047ab>] kernel_thread_helper+0x7/0x1c
>  [<c04216f2>] device_create_vargs+0x42/0xd0
>  =======================
> no locks held by pccardd/1121.
> 

Hmm, hitting sysrq-w produces no blocked task until I eject pcmcia
card. Backtrace there is:

Greg, I believe some traces lead to sysfs, can you help here?

								Pavel 


SysRq : Show Blocked State
  task                PC stack   pid father
pccardd       D f7fb53b8     0  1121      2
       f6d37e30 00000086 00000000 f7fb53b8 00000002 f7c71ef0 c2015e80
c2015e80
       00000282 834ba19e 0000001a f7fb53b8 f7fb5618 c2015e80 f6d36000
f68ccdc0
       f6d37e08 00013c4d 00000000 c085d5dd 00000000 f6d37e4c 00000000
00000000
Call Trace:
 [<c072ee3c>] schedule_timeout+0x7c/0xd0
 [<c02bd237>] remove_dir+0x27/0x40
 [<c0730bea>] _spin_lock_irq+0x2a/0x40
 [<c072e290>] wait_for_common+0xc0/0x130
 [<c021f5c0>] default_wake_function+0x0/0x10
 [<c04d48ef>] ide_unregister+0xcf/0x150
 [<c04e56c1>] ide_release+0x21/0x40
 [<c04e5709>] ide_detach+0x29/0x80
 [<c0520196>] pcmcia_device_remove+0x36/0xe0
 [<c0423166>] __device_release_driver+0x56/0x90
 [<c0423260>] device_release_driver+0x20/0x40
 [<c042260b>] bus_remove_device+0x6b/0x90
 [<c042111f>] device_del+0xcf/0x140
 [<c0421198>] device_unregister+0x8/0x10
 [<c051fbcc>] pcmcia_card_remove+0x6c/0x80
 [<c0520a84>] ds_event+0x64/0xb0
 [<c051c17f>] pccardd+0x16f/0x2a0
 [<c051b84b>] send_event+0x4b/0x80
 [<c051babb>] socket_shutdown+0xb/0xd0
 [<c051bb9c>] socket_remove+0x1c/0x30
 [<c051c24e>] pccardd+0x23e/0x2a0
 [<c021f5c0>] default_wake_function+0x0/0x10
 [<c051c010>] pccardd+0x0/0x2a0
 [<c023c3f2>] kthread+0x42/0x70
 [<c023c3b0>] kthread+0x0/0x70
 [<c02047ab>] kernel_thread_helper+0x7/0x1c
 [<c0376762>] blk_alloc_queue_node+0x12/0x90
 =======================
Sched Debug Version: v0.07, 2.6.26-rc8 #308
now at 162851.680956 msecs


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