Re: 2.6.12-rc1-mm3 (cannot read cd-rom, 2.6.12-rc1 is OK)

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Steven Cole wrote:
I'm having trouble reading from the cd-rom with 2.6.12-rc1-mm3.

Kernel 2.6.12-rc1 behaves normally:

[root@spc1 steven]# mount /dev/hdc /mnt/cdrom
mount: block device /dev/hdc is write-protected, mounting read-only
[root@spc1 steven]# df -T
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/hda1     ext3    304M   96M  193M  34% /
/dev/hda9 reiserfs    8.3G  7.2G  1.1G  88% /home
/dev/hda8     ext3    464M  8.1M  432M   2% /tmp
/dev/hda6     ext3    7.4G  1.5G  5.5G  22% /usr
/dev/hda7     ext3    1.9G   96M  1.7G   6% /var
/dev/hdc   iso9660     38M   38M     0 100% /mnt/cdrom
[root@spc1 steven]# ls -l /mnt/cdrom
total 37859
-rw-r--r--  1 501 501 38673949 Mar 25 07:41 linux-2429tar.gz
-rw-r--r--  1 501 501    92317 Mar 25 07:43 patch-2430-rc1.bz2
[root@spc1 steven]# uname -r
2.6.12-rc1-GX110

Snipped from dmesg:

[   51.440018] EXT3-fs: mounted filesystem with ordered data mode.
[   58.585093] PCI: Found IRQ 5 for device 0000:01:0c.0
[  232.333180] ISO 9660 Extensions: IEEE_P1282



Kernel 2.6.12-rc1-mm3 does not: (same CD left in device)

[root@spc1 steven]# mount /dev/hdc /mnt/cdrom
mount: block device /dev/hdc is write-protected, mounting read-only
[root@spc1 steven]# df -T
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/hda1     ext3    304M   96M  193M  34% /
/dev/hda9 reiserfs    8.3G  7.2G  1.1G  88% /home
/dev/hda8     ext3    464M  8.1M  432M   2% /tmp
/dev/hda6     ext3    7.4G  1.5G  5.5G  22% /usr
/dev/hda7     ext3    1.9G   96M  1.7G   6% /var
/dev/hdc   iso9660     38M   38M     0 100% /mnt/cdrom
[root@spc1 steven]# ls -l /mnt/cdrom
total 0
[root@spc1 steven]# uname -r
2.6.12-rc1-mm3-GX110

Snipped from dmesg:

[   49.198779] EXT3-fs: mounted filesystem with ordered data mode.
[   56.310394] PCI: Found IRQ 5 for device 0000:01:0c.0
[  222.804956] rock: directory entry would overflow storage
[  222.804978] rock: sig=0x5245, size=8, remaining=0
[  235.551953] rock: directory entry would overflow storage
[  235.551969] rock: sig=0x5850, size=36, remaining=34
[  235.551976] rock: directory entry would overflow storage
[  235.551981] rock: sig=0x5850, size=36, remaining=34

Sorry, I don't have the time to do further troubleshooting, but I
hope this is enough information.  The .config for this machine was
posted earlier in another thread here:
http://marc.theaimsgroup.com/?l=linux-kernel&m=111167720523853&w=2

Steven

I found a few more minutes to test two more kernels.  The problem
first occured with 2.6.12-rc1-mm2:

2.6.12-rc1     reads the cd-rom OK as reported earlier
2.6.12-rc1-mm1 also reads the cd-rom OK
2.6.12-rc1-mm2 broken same as -mm3 described as above
2.6.12-rc1-mm3 broken as reported earlier

Steven
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