linux-kernel - Re: 2.6.19-rc1 regression: unable to read dvd's

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Message-Id: <1160663497.6278.9.camel@Homer.simpson.net>
Date:	Thu, 12 Oct 2006 14:31:37 +0000
From:	Mike Galbraith <efault@....de>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Alex Romosan <romosan@...orax.lbl.gov>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.19-rc1 regression: unable to read dvd's

On Thu, 2006-10-12 at 14:09 +0200, Jens Axboe wrote:
> On Thu, Oct 12 2006, Mike Galbraith wrote:

> > We're having secret handshake troubles?
> > 
> > [pid  8348] stat64("/dev/dvd", {st_dev=makedev(0, 13), st_ino=3750, st_mode=S_IFBLK|0640, st_nlink=1, st_uid=0, st_gid=6, st_blksize=4096, st_blocks=0, st_rdev=makedev(22, 64), st_atime=2006/10/12-10:03:04, st_mtime=2006/10/12-10:00:12, st_ctime=2006/10/12-10:00:17}) = 0
> > [pid  8348] open("/dev/dvd", O_RDONLY|O_LARGEFILE <unfinished ...>
> > [pid  8348] <... open resumed> )        = 8
> > [pid  8348] fstat64(8, {st_dev=makedev(0, 13), st_ino=3750, st_mode=S_IFBLK|0640, st_nlink=1, st_uid=0, st_gid=6, st_blksize=4096, st_blocks=0, st_rdev=makedev(22, 64), st_atime=2006/10/12-10:03:04, st_mtime=2006/10/12-10:00:12, st_ctime=2006/10/12-10:00:17}) = 0
> > [pid  8348] ioctl(8, DVD_READ_STRUCT <unfinished ...>
> > [pid  8348] <... ioctl resumed> , 0xbfc792a4) = 0
> > [pid  8348] ioctl(8, DVD_AUTH <unfinished ...>
> > [pid  8348] <... ioctl resumed> , 0xbfc7916c) = 0
> > [pid  8348] ioctl(8, DVD_AUTH <unfinished ...>
> > [pid  8348] <... ioctl resumed> , 0xbfc7916c) = 0
> > [pid  8348] ioctl(8, DVD_AUTH <unfinished ...>
> > [pid  8348] <... ioctl resumed> , 0xbfc7916c) = 0
> > [pid  8348] ioctl(8, DVD_AUTH <unfinished ...>
> > [pid  8348] <... ioctl resumed> , 0xbfc79170) = 0
> > [pid  8348] close(8)                    = 0
> > [pid  8348] write(2, "libdvdread: Could not open /dev/"..., 52 <unfinished ...>
> > [pid  8348] <... write resumed> )       = 52
> > [pid  8348] write(2, "libdvdread: Can\'t open /dev/dvd "..., 44 <unfinished ...>
> > [pid  8348] <... write resumed> )       = 44
> > [pid  8348] write(1, "libdvdnav: vm: faild to open/rea"..., 42 <unfinished ...>
> > [pid  8348] <... write resumed> )       = 42
> > [pid  8348] write(1, "libdvdnav: Using dvdnav version "..., 62 <unfinished ...>
> > [pid  8348] <... write resumed> )       = 62
> > [pid  8348] write(2, "libdvdread: Using libdvdcss vers"..., 57 <unfinished ...>
> > [pid  8348] <... write resumed> )       = 57
> 
> It's the rq-cmd-type patch, it must be causing a disturbance for some of
> the internal cd commands. I bet it's the same thing affecting the report
> on broken dvd identification on ppc from Olaf.

I eyeballed that first off, and didn't see anything suspicious.  I'll
have to stare harder I suppose.  Thanks.

	-Mike

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