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