2005-01-30 23:34:50

by Fabio Coatti

[permalink] [raw]
Subject: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

I'm seeing a problem with latest mm releases; with 2.6.11-rc1,2-mmX every time
I fire up k3b, it get stuck here: (last line, previous lines just for
documentation :) )

open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
close(11) = 0
open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
ioctl(11, CDROM_SEND_PACKET, 0xbfffc590) = -1 EIO (Input/output error)
close(11) = 0
open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
close(11) = 0
open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
ioctl(11, CDROM_GET_CAPABILITY or SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT,
0x7fffffff) = 3735535
close(11) = 0
lstat64("/dev", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=30220, ...}) = 0
lstat64("/dev/sr1", {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
fstat64(11, {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
ioctl(11, CDROM_SEND_PACKET, 0xbfffd740) = 0
close(11) = 0
open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
fstat64(11, {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
ioctl(11, CDROMAUDIOBUFSIZ or SCSI_IOCTL_GET_IDLUN, 0xbfffd7e8) = 0
ioctl(11, SCSI_IOCTL_GET_BUS_NUMBER, 0xbfffd8a4) = 0
close(11) = 0
open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
ioctl(11, CDROM_SEND_PACKET, 0xbfffd7d0) = 0
ioctl(11, CDROM_SEND_PACKET

At this point k3b is stuck in D stat, needs reboot.

I've thinked of faulty HW, but 2.6.10-mm2 can complete the scan (I haven't
tried to use that device, to ber honest, after successful initialization).

On scsi- bus I've the following devices:
cova@kefk ~ $ cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: Nikon Model: COOLSCANIII Rev: 1.31
Type: Scanner ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: PLEXTOR Model: CD-ROM PX-40TS Rev: 1.01
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 05 Lun: 00
Vendor: YAMAHA Model: CRW6416S Rev: 1.0c
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: Maxtor 6Y160M0 Rev: YAR5
Type: Direct-Access ANSI SCSI revision: 05

cova@kefk ~ $ cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 6.2.36
Adaptec 2902/04/10/15/20C/30C SCSI adapter
aic7850: Single Channel A, SCSI Id=7, 3/253 SCBs
Allocated SCBs: 4, SG List Length: 128



Let me know if further details/testing are needed.



--
Fabio Coatti http://members.ferrara.linux.it/cova
Ferrara Linux Users Group http://ferrara.linux.it
GnuPG fp:9765 A5B6 6843 17BC A646 BE8C FA56 373A 5374 C703
Old SysOps never die... they simply forget their password.


2005-01-31 08:05:28

by Jens Axboe

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

On Mon, Jan 31 2005, Fabio Coatti wrote:
> I'm seeing a problem with latest mm releases; with 2.6.11-rc1,2-mmX every time
> I fire up k3b, it get stuck here: (last line, previous lines just for
> documentation :) )
>
> open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
> ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
> close(11) = 0
> open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
> ioctl(11, CDROM_SEND_PACKET, 0xbfffc590) = -1 EIO (Input/output error)
> close(11) = 0
> open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
> ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
> ioctl(11, CDROM_SEND_PACKET, 0xbfffc4e0) = 0
> close(11) = 0
> open("/dev/hdc", O_RDONLY|O_NONBLOCK) = 11
> ioctl(11, CDROM_GET_CAPABILITY or SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT,
> 0x7fffffff) = 3735535
> close(11) = 0
> lstat64("/dev", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=30220, ...}) = 0
> lstat64("/dev/sr1", {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
> open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
> fstat64(11, {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
> ioctl(11, CDROM_SEND_PACKET, 0xbfffd740) = 0
> close(11) = 0
> open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
> fstat64(11, {st_mode=S_IFBLK|0600, st_rdev=makedev(11, 1), ...}) = 0
> ioctl(11, CDROMAUDIOBUFSIZ or SCSI_IOCTL_GET_IDLUN, 0xbfffd7e8) = 0
> ioctl(11, SCSI_IOCTL_GET_BUS_NUMBER, 0xbfffd8a4) = 0
> close(11) = 0
> open("/dev/sr1", O_RDONLY|O_NONBLOCK) = 11
> ioctl(11, CDROM_SEND_PACKET, 0xbfffd7d0) = 0
> ioctl(11, CDROM_SEND_PACKET
>
> At this point k3b is stuck in D stat, needs reboot.

The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
2.6.11-rc2-mm1 with bk-scsi backed out? (attached)

--
Jens Axboe


Attachments:
(No filename) (1.84 kB)
bk-scsi-rc-fixes.patch.bz2 (30.16 kB)
Download all attachments

2005-01-31 10:08:37

by Fabio Coatti

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Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

Alle 09:00, lunedì 31 gennaio 2005, Jens Axboe ha scritto:
>
> > At this point k3b is stuck in D stat, needs reboot.
>
> The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
> 2.6.11-rc2-mm1 with bk-scsi backed out? (attached)

just tried, right guess :)
backing out that patch the problem disappears.
Let me know if you need to narrow further that issue.

Thanks :)


--
Fabio Coatti http://members.ferrara.linux.it/cova
Ferrara Linux Users Group http://ferrara.linux.it
GnuPG fp:9765 A5B6 6843 17BC A646 BE8C FA56 373A 5374 C703
Old SysOps never die... they simply forget their password.

2005-01-31 11:06:00

by Jens Axboe

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

On Mon, Jan 31 2005, Fabio Coatti wrote:
> Alle 09:00, luned? 31 gennaio 2005, Jens Axboe ha scritto:
> >
> > > At this point k3b is stuck in D stat, needs reboot.
> >
> > The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
> > 2.6.11-rc2-mm1 with bk-scsi backed out? (attached)
>
> just tried, right guess :)
> backing out that patch the problem disappears.
> Let me know if you need to narrow further that issue.

Doug, it looks like your REQ_BLOCK_PC changes are buggy. Let me know if
you cannot find the full post and I'll forward it to you.

--
Jens Axboe

2005-01-31 11:48:55

by Douglas Gilbert

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

Jens Axboe wrote:
> On Mon, Jan 31 2005, Fabio Coatti wrote:
>
>>Alle 09:00, luned? 31 gennaio 2005, Jens Axboe ha scritto:
>>
>>>>At this point k3b is stuck in D stat, needs reboot.
>>>
>>>The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
>>>2.6.11-rc2-mm1 with bk-scsi backed out? (attached)
>>
>>just tried, right guess :)
>>backing out that patch the problem disappears.
>>Let me know if you need to narrow further that issue.
>
>
> Doug, it looks like your REQ_BLOCK_PC changes are buggy. Let me know if
> you cannot find the full post and I'll forward it to you.

Jens,
Hmm. Found the thread on lkml. I got an almost identical
lock up in k3b with a USB external cd/dvd drive recently.
My laptop didn't need rebooting (probably since the root
fs is one an ide disk).

That is a quite large patch that you referenced. I'll
try and replicate and report back.

Doug Gilbert

2005-01-31 11:50:28

by Jens Axboe

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

On Mon, Jan 31 2005, Douglas Gilbert wrote:
> Jens Axboe wrote:
> >On Mon, Jan 31 2005, Fabio Coatti wrote:
> >
> >>Alle 09:00, luned? 31 gennaio 2005, Jens Axboe ha scritto:
> >>
> >>>>At this point k3b is stuck in D stat, needs reboot.
> >>>
> >>>The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
> >>>2.6.11-rc2-mm1 with bk-scsi backed out? (attached)
> >>
> >>just tried, right guess :)
> >>backing out that patch the problem disappears.
> >>Let me know if you need to narrow further that issue.
> >
> >
> >Doug, it looks like your REQ_BLOCK_PC changes are buggy. Let me know if
> >you cannot find the full post and I'll forward it to you.
>
> Jens,
> Hmm. Found the thread on lkml. I got an almost identical
> lock up in k3b with a USB external cd/dvd drive recently.
> My laptop didn't need rebooting (probably since the root
> fs is one an ide disk).
>
> That is a quite large patch that you referenced. I'll
> try and replicate and report back.

My guess would be the scsi_lib changes, I would suggest you start there.

--
Jens Axboe

2005-01-31 13:14:13

by Douglas Gilbert

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

Jens Axboe wrote:
> On Mon, Jan 31 2005, Douglas Gilbert wrote:
>
>>Jens Axboe wrote:
>>
>>>On Mon, Jan 31 2005, Fabio Coatti wrote:
>>>
>>>
>>>>Alle 09:00, luned? 31 gennaio 2005, Jens Axboe ha scritto:
>>>>
>>>>
>>>>>>At this point k3b is stuck in D stat, needs reboot.

I was able to replicate this with a USB burner.
My system didn't need a reboot. The "D" state was locked
on "blk_execute_rq". The burner was still accessible via
sg.

>>>>>The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
>>>>>2.6.11-rc2-mm1 with bk-scsi backed out? (attached)
>>>>
>>>>just tried, right guess :)
>>>>backing out that patch the problem disappears.
>>>>Let me know if you need to narrow further that issue.
>>>
>>>
>>>Doug, it looks like your REQ_BLOCK_PC changes are buggy. Let me know if
>>>you cannot find the full post and I'll forward it to you.
>>
>>Jens,
>>Hmm. Found the thread on lkml. I got an almost identical
>>lock up in k3b with a USB external cd/dvd drive recently.
>>My laptop didn't need rebooting (probably since the root
>>fs is one an ide disk).
>>
>>That is a quite large patch that you referenced. I'll
>>try and replicate and report back.
>
>
> My guess would be the scsi_lib changes, I would suggest you start there.

Indeed. I'm not sure what I was thinking in
scsi_io_completion(). This small reversion
fixes my k3b problem; tested with a USB external
burner.

Signed-off-by: Douglas Gilbert <[email protected]>





Attachments:
scsi_lib2611rc2bk8.diff (1.20 kB)

2005-01-31 13:53:43

by Jens Axboe

[permalink] [raw]
Subject: Re: 2.6.11-rc[1,2]-mmX scsi cdrom problem, 2.6.10-mm2 ok

On Mon, Jan 31 2005, Douglas Gilbert wrote:
> Jens Axboe wrote:
> >On Mon, Jan 31 2005, Douglas Gilbert wrote:
> >
> >>Jens Axboe wrote:
> >>
> >>>On Mon, Jan 31 2005, Fabio Coatti wrote:
> >>>
> >>>
> >>>>Alle 09:00, luned? 31 gennaio 2005, Jens Axboe ha scritto:
> >>>>
> >>>>
> >>>>>>At this point k3b is stuck in D stat, needs reboot.
>
> I was able to replicate this with a USB burner.
> My system didn't need a reboot. The "D" state was locked
> on "blk_execute_rq". The burner was still accessible via
> sg.

With a slave burner on the same interface as your hard drive, it would
soft hang the system.

> >>>>>The most likely suspect is the REQ_BLOCK_PC scsi changes. Can you try
> >>>>>2.6.11-rc2-mm1 with bk-scsi backed out? (attached)
> >>>>
> >>>>just tried, right guess :)
> >>>>backing out that patch the problem disappears.
> >>>>Let me know if you need to narrow further that issue.
> >>>
> >>>
> >>>Doug, it looks like your REQ_BLOCK_PC changes are buggy. Let me know if
> >>>you cannot find the full post and I'll forward it to you.
> >>
> >>Jens,
> >>Hmm. Found the thread on lkml. I got an almost identical
> >>lock up in k3b with a USB external cd/dvd drive recently.
> >>My laptop didn't need rebooting (probably since the root
> >>fs is one an ide disk).
> >>
> >>That is a quite large patch that you referenced. I'll
> >>try and replicate and report back.
> >
> >
> >My guess would be the scsi_lib changes, I would suggest you start there.
>
> Indeed. I'm not sure what I was thinking in
> scsi_io_completion(). This small reversion
> fixes my k3b problem; tested with a USB external
> burner.

Well at least I had hoped you would have tested patches going into
mainline...

Can you make sure it gets to Linus asap? Otherwise I'm sure I'll be
flooded with mails on burning not working very shortly.

--
Jens Axboe