fsck out of swap

[Frank Wille <frank%phoenix.owl.de@localhost>]

Yesterday morning my DS-101g+, running NetBSD/sandpoint 6.0beta, crashed
and I had to reboot it. I had no WAPBL enabled, so I was prepared to run
fsck(8) for a few minutes. But at the end, shortly before fsck(8) marks
the FS as clean, the following happened:

---8<---
Starting root file system check:
trap: pid 19.1 (fsck_ffs): user read DSI trap @ 0xfdad0000 by 0x180f038 (DSISR 
0x40000000, err=12)
UVM: pid 19.1 (fsck_ffs), uid 0 killed: out of swap
fsck: /dev/rwd0a: Killed
Automatic file system check failed; help!
ERROR: ABORTING BOOT (sending SIGTERM to parent)!
[1]   Terminated              (stty status "^T...
Enter pathname of shell or RETURN for /bin/sh: 
---8<---

Did that happen to anybody yet? How many memory is needed to run fsck(8)
in the worst case? My NAS has 64MB.

-- 
Frank Wille