Messages in this thread | | | Date | Wed, 10 Jun 1998 09:28:32 -0500 | From | Charlie Hedlin <> | Subject | Re: Any SMP people out there with SCSI CD ROMs? |
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Linus Torvalds wrote: > > On Wed, 10 Jun 1998, Keith Owens wrote: > > > > CD recorder on ASUS dual P166, pure SCSI. Which version of 105, > > vanilla, ac1, ac2? What symptoms? I'll take a look tonight. > > It will happen with all versions, the ac patches don't touch the SCSI > subsystem. > > The symptoms are a very noticeable and complete hard lockup, it appears. > Which is extremely easy to believe if something is leaving the > io_request_lock locked (or tries to get it recursively). That would > certainly lock the machine completely. > > Which is why I asked for somebody who felt comfortable about spinlocks. > Any help is appreciated, even just reports of how to reliably make this > happen (for all I know it may be limited to just one specific driver), but > let's be careful out there.. > > Linus > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu
I had previously considered the occurance of this on my system to be my own fault, as it is not setup that well. I have an SMP mb, but haven't gotten around to the second proccesor yet, but I have an SMP kernel. I have a mixture of SCSI and IDE, with my CD's on IDE running under SCSI emulation for my CD writer. I have had no problems writing, but when I read CD audio I run a chance of locking my machine hard as described.
I can't debug the problem, but I hope this information may help.
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