Date: Thu, 14 Oct 2004 13:28:01 -0400 From: Mikhail Teterin <mi+mx@aldan.algebra.com> To: freebsd-current@FreeBSD.org Subject: panic du jour: vnode_pager_getpages: unexpected missing page Message-ID: <200410141328.02027@misha-mx.virtual-estates.net>
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I'm debugging a program making heavy us of mmap(). Contrary to what
man-page says, I expected it to be possible to mmap() regions larger
than 2Gb on amd64, and mmap() did, indeed succeeded for a 3.7Gb file.
However some time into running the program exited on signal 6 (ABRT).
A minute or so after that the whole system panic-ed:
vnode_pager_getpages: unexpected missing page: first addr: -1, foff
0x080006000, vnp_size 0x0b5d20000
The machine runs yesterday's -current, has a single Opteron CPU and 2Gb
of RAM. There was very little IO at the time of death (according to the
frozen `systat 1 -vm').
1) Am I wrong, and mmap-ing more than 2Gb is not supposed
to work even on a 64-bit system?
2) How can I help in eliminating this panic?
3) Should I go back to the latest 5.3-beta, or is the -current
kernel not dramatically more unstable?
Thanks,
-mi
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