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uvm page freelist problem

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From: Matthias Drochner
Subject: uvm page freelist problem
Date: Wednesday, January 16, 2008 - 3:31 am

Hi -
I've got a panic "uvm_pglistalloc: page not on freelist"
(in uvm_pglist.c:uvm_pglist_add())
two times now, when starting X where the Intel AGP code
does some larger pglistallocs.

By code inspection I haven't found a place where the
pglists are accessed without acquiring the uvm_fpageqlock.

Can it happen that a page changes its (pg->flags & PG_ZERO)
status in the process which would cause that the page queue
it is looked for at changes?

best regards
Matthias




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Messages in current thread:
uvm page freelist problem, Matthias Drochner, (Wed Jan 16, 3:31 am)
Re: uvm page freelist problem , Matthias Drochner, (Wed Jan 16, 3:55 am)
Re: uvm page freelist problem, Herb Peyerl, (Thu Jan 17, 11:08 am)
Re: uvm page freelist problem , Matthias Drochner, (Thu Jan 17, 11:40 am)
Re: uvm page freelist problem , Matthias Drochner, (Thu Jan 17, 11:45 am)
Re: uvm page freelist problem , Herb Peyerl, (Fri Jan 18, 1:16 pm)
Re: uvm page freelist problem, Reinoud Zandijk, (Sun Jan 27, 2:23 pm)