On Wed, 26 Jul 2000, Sheldon Hearn wrote:
>
> Hi Kirk,
>
> On Tue, 25 Jul 2000 11:28:47 MST, Kirk McKusick wrote:
>
> > Modified files:
> > sys/kern vfs_bio.c
> > Log:
> > Now that buffer locks can be recursive, we need to delete the panics
> > that complain about them.
>
> This looks related. I get it pretty consistently on shutdown, provided
> the machine did some work subsequent to going multi-user.
[Script cut]
Yeah, several people are noticing that one. Robert Watson and I were
trying to debug it, but it was really late at night so personally I
gave up on it until I could reproduce it here.
I got a different one. I'd like to track it down but it hasn't repeated
itself (yet?). My call stack was (disregarding ATA's call stack mostly):
panic()
bufdone() checking that B_DONE's not set (which it is)
cluster_callback() calling bp->b_iodone()
biodone() calling bufdone()
ad_interrupt() calling biodone()
I implemented a little circular buffer which holds (calling function,
bp) pairs for bufdone(), but so far I have had no crash yet (yay? :-/).
When I do, the circular buffer (thanks, Greg!) will help me out to
actually debug this instead of just wondering why B_DONE was set.
--
Brian Fundakowski Feldman \ FreeBSD: The Power to Serve! /
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