Messages in this thread |  | | Subject | Re: Reproducible SMP/SCSI Hangs under 2.0.xx | Date | Mon, 16 Dec 1996 17:16:51 EST | From | Jered Floyd <> |
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(Trimmed the Cc: list a bit...)
I, too, have had troubles with kernel lockups that are likely due to an mmap problem, a race condition would seem to be a likely candidate. At first I thought there was a problem in Linux/AFS, which I was building for the SMP kernel, but further experiments showed that I could reproduce the problem without AFS. (AFS does seem to make the problem occur more often, presumably because mmap'ed file access takes longer for files that are on a networked file system.)
I've talked to Alan Cox a bit about this, and am looking at the mmap/ memory management code to see if I can track this down, but I honestly don't know where to begin. Any help would be appreciated.
The machine I have reproduced the problems on is a dual PPro 200/512k, ASUS P65UP5 motherboard, BusLogic 958 SCSI card. Since this commonly occurs with AFS, I don't believe the BusLogic driver is responsible. (Although there might be some concern with the AFS cache...)
--Jered Floyd jered@mit.edu
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