[Bug 14994] Random Panic/Freeze due to BUG: unable to handle kernel NULL pointer dereference at 00000024(?)

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https://bugzilla.kernel.org/show_bug.cgi?id=14994





--- Comment #18 from Marc H. Thoben <kernelbug@xxxxxxxxxx>  2010-04-12 19:06:27 ---
Created an attachment (id=25968)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=25968)
dmesg, debug ide-cd_mod, untainted kernel, request sense failure

Not sure this is connected.. while trying to force the kernel panic.. I
mounted, unmounted, opened, closed.. ran some applications and suddenly got
this (without CD in drive):

hda: request sense failure: status=0xc0 { Busy }
hda: status error: status=0x58 { DriveReady SeekComplete DataRequest }
hda: possibly failed opcode: 0xa0
hda: drive not ready for command

There's a call trace following. I rebooted, since the ide-cd module no longer
logged anything.

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