At Tue, 5 Jan 2010 10:00:34 +0100,
Marinescu Paul dan pauldan.marine...@epfl.ch wrote:
bind (9.6.1-P2) dies when one tries to retrieve statistics via HTTP
from the statistcs-channel feature if an underlying call to libxml
fails (returns a NULL pointer) at statschannel.c:720 - writer =
xmlNewTextWriterDoc(doc, 0);
It's clearly wrong that we do assertion failure when an libxml routine
fails (we've noticed that and have a patch, but it's not yet ready to
be merged), but in reality libxml routines normally should not fail in
a way we are using it. The only realistic cause is memory allocation
failure within libxml, but if this happened named should have
complained about memory shortage in other places, too. Did you see
such warnings/errors in your log?
BTW, if we trust the information in the stack trace what happened
doesn't make sense:
#3 0x0805b5ed in assertion_failed (file=0x81e5954 statschannel.c,
line=721, type=isc_assertiontype_insist,
cond=0x81e59d0 xmlrc = 0) at ./main.c:161
Even though this indicates xmlrc = 0 was false,
#4 0x08075e45 in generatexml (server=0xb7a2b018, buflen=0xbfd2be8c,
buf=0xbfd2be90) at statschannel.c:721
boottime = 2009-12-16T19:01:48Z
nowstr = 2009-12-16T19:02:00Z
now = {seconds = 1260990120, nanoseconds = 623889000}
writer = (xmlTextWriterPtr) 0x0
doc = value optimized out
xmlrc = 0
xmlrc is actually 0.
It's also odd that writer is NULL (it may be the reason for the error
in xmlTextWriterStartDocument(), but it still doesn't explain why
xmlrc is 0).
---
JINMEI, Tatuya
Internet Systems Consortium, Inc.
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