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SubjectRe: Kernel panic with Matsushita CD-ROM in 1.99.11
>>>>> "Linus" == Linus Torvalds <torvalds@cs.Helsinki.FI> writes:

Linus> On Tue, 4 Jun 1996, emoenke wrote:
>> Hi Steffen Zahn,
>>
>> >Jun 4 18:21:04 zahn linux: Kernel panic: Matsushita CD-ROM
>> controller #1: block not locked
>>
>> I suppose it is a compiler bug. I saw it sporadically with
>> gcc-2.7.0, and it seems gone under gcc-2.7.2. Under 2.7.0, I
>> could eliminate it by just putting additional, but "neutral"
>> statements around that "decision spot" in ll_rw_blk.c.
[...]
Linus> In short, could you take a look at 2.0pre12, and see if the
Linus> problem is gone? It should have happened _only_ under very
Linus> heavy load (although a slow device like a CD-ROM or a
Linus> floppy might have made it happen a lot more easily).

The problem disappeared for me in 1.99.12. I grepped all files of 2 CD-ROMs
without a crash. Previously (1.99.11) the crash would happend within
seconds. The load is 1.07. And for the record: I use gcc 2.7.2(ELF) as
stored on sunsite.

Regards
Steffen

--
work: Steffen.Zahn%robinie@emndev.siemens.co.at | home: zahn@berlin.snafu.de
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