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Date:      Thu, 14 Nov 2002 10:34:46 -0500 (EST)
From:      Kenneth Culver <culverk@yumyumyum.org>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        freebsd-hackers@FreeBSD.org
Subject:   RE: panic with nvidia drivers (but not sure it's nvidia's fault)
Message-ID:  <20021114103213.D32489-100000@alpha.yumyumyum.org>
In-Reply-To: <20021114102342.W32489-100000@alpha.yumyumyum.org>

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> several functions that call vm_object functions in FreeBSD's kernel that
> eventually call atomic_clear_short(). For some reason those functions in
> between aren't in the backtrace though, and without that I can (and
> have) look through the code in the kernel to see how nv_alloc_pages can
> get to atomic_clear_short through vm calls, but I'm not sure that's too
> awefully helpful.

Actually, after tracing through again, it appears to be following this
codepath: (in reverse order from a backtrace)

nv_alloc_pages()
nv_free_vm_object()
vm_object_deallocate()
vm_object_clear_flag()
atomic_clear_short()

so I think it's possible that something may be getting screwed up between
nv_free_vm_object and atomic_clear_short(). I'm not really sure how to
tell though.

Ken


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