Re: Kernel panic with Matsushita CD-ROM in 1.99.11

Steffen Zahn (zahn@berlin.snafu.de)
Wed, 5 Jun 1996 20:53:09 +0200


>>>>> "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
      phone:+49-30-38624969                     |       phone:+49-30-4732126
Any opinions expressed herein are not necessarily those of my employer