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Re: kern/35198: lfs_pchain corruption causing hang or panic

The following reply was made to PR kern/35198; it has been noted by GNATS.

From: Paul Ripke <>
To: David Holland <>
Cc: NetBSD gnats-bugs <>
Subject: Re: kern/35198: lfs_pchain corruption causing hang or panic
Date: Wed, 23 Jan 2008 11:58:36 +1100

 On Wed, Jan 23, 2008 at 12:38:41AM +0000, David Holland wrote:
 > On Wed, Jan 23, 2008 at 12:20:04AM +0000, Paul Ripke wrote:
 >  >  Although this was 100% repeatable on this specific computer, I was
 >  >  unable to reproduce hang or panic under QEMU. I now suspect that this
 >  >  may have been due to a dodgy driver stomping very specifically on these
 >  >  structs - possibly disk?
 >  >  
 >  >  In any case, I think this can be closed.
 > Well, if there's a driver corrupting things it would be nice to fix
 > that... but if you don't have the time/patience/whatnot to track it
 > down, I can close the PR.
 I'd like to chase down the issue, but the system is pretty old, the
 disk is a:
 amr0 at pci1 dev 10 function 1: AMI RAID <Series 466>
 amr0: interrupting at ioapic1 pin 8 (irq 14)
 amr0: firmware <3.01>, BIOS <1.36>, 16MB RAM
 ld0 at amr0 unit 0: RAID 5, optimal
 ld0: 42840 MB, 10880 cyl, 128 head, 63 sec, 512 bytes/sect x 87736320 sectors
 which is pretty ancient, and the system is about 16000km away from
 me right now, and yes, I don't have the time, either. I say close it,
 and if I feel the inclination in the future, I'll open another, more
 relevant PR.

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