Date: Sun, 29 Sep 1996 18:20:41 -0700 From: Sean Eric Fagan <sef@Kithrup.COM> To: hackers@freebsd.org Subject: Help -- getting a panic in pmap_is_modified Message-ID: <199609300120.SAA14731@kithrup.com>
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I am getting a panic (in 2.1.5-RELEASE) in pmap_is_modified() during a shutdown if I change struct trapframe. (A page-not-present panic, in fact.) In particular, I have added four words to the end of struct trapframe. I've compensated by also pushing four additional words in locore.s, just before calling _main. The annoying part is that it only happens when I shutdown; the code path is calling through vfs_unmountroot(). I think it's safe to say that I've missed *somewhere* where the size of the trapframe is important. But I can't think of *where*. I've asked both David and Bruce, and neither of them has any ideas. Anyone else? Sean.
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