[Bug 13399] kernel crash SONY DVD-ROM with cd

[bugzilla-daemon@bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=13399





--- Comment #44 from Stan Senuta Jr. <ssenuta@dialup.cc>  2009-06-23 04:07:35 ---
I am pleased to report that your kernel-2.6.30 patch
(0001-ide-cd-prevent-null-pointer-deref-via-cdrom_newpc_in.patch) 
fixed the crash problem when accessing my /dev/hdd dvd-rom drive. I was able to
mount a dvd-rw disc & here is the proof:

[root@localhost stan]# mount -t iso9660 /dev/hdd /mnt/misc
mount: block device /dev/hdd is write-protected, mounting read-only
[root@localhost stan]# df -T
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/sda2     ext4     60G  4.3G   52G   8% /
/dev/sda1     ext3     54M   16M   36M  31% /boot
/dev/sda6     ext4     60G  3.1G   53G   6% /usr
/dev/hdd   iso9660    400K  400K     0 100% /mnt/misc

[root@localhost stan]# mount -t iso9660 /dev/hdc /mnt/cddrive
[root@localhost stan]# df -T
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/sda2     ext4     60G  4.3G   52G   8% /
/dev/sda1     ext3     54M   16M   36M  31% /boot
/dev/sda6     ext4     60G  3.1G   53G   6% /usr
/dev/hdd   iso9660    400K  400K     0 100% /mnt/misc
/dev/hdc   iso9660    350K  350K     0 100% /mnt/cddrive

I edited the kernel-2.6.30 "ide-cd.c" file as instructed to apply the patch &
then ran the following 
commands to re-compile my kernel:

      make mrproper
      cp .config-save .config
      make oldconfig
      make
      make modules_install

My  "new"  /lib/modules/2.6.30/drivers/ide/ide-cd_mod.ko showed file size =
35133 bytes.
The "orig" /lib/modules/2.6.30/drivers/ide/ide-cd_mod.ko showed file size =
35125 bytes.

I also inserted a commercial video movie disc & a cd-rw disc in problem drive
/dev/hdd.
Everything seems too work fine. Thank you.

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