On Sep 25, 2008, at 8:45 AM, John Baldwin wrote:
It's probably the one just before the NDINIT (note that the return
address in
the call stack is pointing to the next instruction to be executed
after the
call to VOP_UNLOCK(), so sometimes it can end up referring to the
next line
in the source code from the actual function call):
Seems like we're six or seven lines of source down, not on the next
line, which was the source of my confusion. But if you're not
confused, I won't be. :)
Can you 'p *mp'? I'm curious if mp->mnt_vnodecovered is NULL (in
which case,
why didn't the two tests in the if() fail?)
Apparently I can't; we're stuck with DDB since we can't get a crash
dump and the serial console goes to a hardware terminal server. I'm
afraid I'm not quite clever enough to find the right data structure
without symbols.
I could try to throw a printf in there, or add a panic if mp-
>mt_vnodecovered is NULL, if you think that would help. The printf
will probably significantly alter timings, so I might need some
guidance as far as what to print, and under what conditions.
Thanks,
Jeff
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