[Bug 1332203] Re: autofs5-ldap regularly crashes after long periods of time

[Paul Kilgo]

Just to make sure all the information is together, I noticed earlier
there was a piece of a log message in that stack trace I posted. I tried
to see what I could do to piece together part of it:

  "%s: lookup(ldap): query failed for search dn %s: %s"

became

  "Invalid DN syntax: lookup(ldap): query failed for search dn %s: %s"

I was unable to get the other two substitutions since it's difficult to
pull information out of the va_list. I have a suspicion that one of them
may be an empty string or NULL. That may all be site-specific problems,
but I grepped through the autofs5 code and saw that message corresponds
to line 396 of `modules/lookup_ldap.c`:

 395         error(logopt,
 396               MODPREFIX "query failed for search dn %s: %s",
 397               this->basedn, ldap_err2string(rv));

which is the error handling side of an ldap_search_s call:

 374       rv = ldap_search_s(ldap, this->basedn,
 375              scope, query, attrs, 0, &result);

I don't have the debug symbols for lookup_ldap.so so I'm unable to go
much further than this.

In the meantime we are also running automount through strace (per bug
Bug #593603 but with `strace -f`) to see if we can figure out what that
log message is.

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Title:
  autofs5-ldap regularly crashes after long periods of time

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