SGI crashes during shutdown! Why??

[Brendan Eich]

In article <902 at ki.UUCP>, dwatts at ki.UUCP (Dan Watts) writes:
> While attempting to do a reboot today, I ran across a nasty little problem.
> Seems my system crashed during shutdown.  From the dbx output, it seems that
> the problem has to do with NFS.

But neither "nfs" nor "NFS" appears in the dbx output.  The "efs" in the 7th
stack frame below stands for Extent File System (SGI's local filesystem type).
Is there another reason why you think this might be an NFS bug?

> # dbx -k unix.5 vmcore.5
> dbx version 2.0 8/6/90 14:02
> . . .
> Current process id is 15499
> (dbx) where
> > 0 syncreboot(0x0, 0xa7, 0x800cf7ce, 0x0, 0x40, 0x800cf63c)
>   1 cmn_err(0x0, 0x800cf6ec, 0x800cf808, 0x8001f1b8, 0xffffdd8c, 0x40)
>   2 panicregs(0xffffdd8c, 0x40, 0x8ff14, 0x30000008, 0x800cf808, 0x0)
>   3 k_trap(0x8001fa2c, 0x800fd9bc, 0x8ff14, 0x30000008, 0x1b, 0x80148ef8)
>   4 .trap.trap(0xffffdd8c, 0x0, 0x8ff14, 0x30000008, 0xff, 0x80130350)
>   5 pflushinvaldev(0x8015b060, 0x80051028, 0x80050f68, 0x8001e0f0, 0x800fb170,
>   6 binval(0x800fb170, 0x800e7024, 0x800e7024, 0x8001e0b0, 0x1, 0x93)
>   7 efs_umount(0x80106ae8, 0x19, 0x80038ccc, 0x0, 0x800fc7d4, 0x800159a0)
>   8 sumount(0x80106a08, 0x800335b4, 0x80033158, 0x80015ef8, 0xf801000, 0x8ff3c)
>   9 .trap.syscall(0xffffc0f0, 0x16, 0x8ff3c, 0x30000008, 0x0, 0x0)

It looks more like an EFS or VM bug, although the prior NFS umounts you
mentioned could be obscurely related.  We'll have a look.  Thanks,

/be