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Re: 2.4.14 prerelease call for testing #2
Howard Chu writes:
> That's interesting. That would require receiving a Hangup event on a
> descriptor we've already removed from epoll's event list. How can that be?
OS bug? Race condition?
Valgrind bug, since it so far will only happen under Valgrind?
> Have you seen this with CONNS debug messages enabled?
Full testrun dir in <http://folk.uio.no/hbf/testrun.1.tbz> from
GRIND=valgrind SLAPD_DEBUG=269 ./run test050
(I've done s/exec/exec $GRIND/ on last 'exec' in servers/slapd/slapd).
Seems to usually be in slapd.2.log. It ends with:
conn=0 op=1 SEARCH RESULT tag=101 err=0 nentries=4 text=
daemon: activity on 1 descriptor
daemon: activity on: 9r
daemon: read active on 9
daemon: epoll: listen=7 active_threads=0 tvp=NULL
connection_get(9)
connection_get(9): got connid=0
connection_read(9): checking for input on id=0
ber_get_next
daemon: activity on 1 descriptor
daemon: activity on:
daemon: hangup on 9
connection_get(9)
ber_get_next: tag 0x30 len 5 contents:
ber_get_next
ber_get_next on fd 9 failed errno=0 (Success)
connection_read(9): input error=-2 id=0, closing.
connection_closing: readying conn=0 sd=9 for close
connection_close: deferring conn=0 sd=9
conn=0 op=2 do_unbind
conn=0 op=2 UNBIND
connection_get(9): got connid=0
connection_close: deferring conn=0 sd=9
daemon: epoll: listen=7 active_threads=0 tvp=NULL
connection_resched: attempting closing conn=0 sd=9
connection_close: conn=0 sd=9
daemon: removing 9
daemon: activity on 2 descriptors
daemon: activity on:
conn=0 fd=9 closed
daemon: hangup on 9
lt-slapd: daemon.c:181: SLAP_EPOLL_SOCK_SET: Assertion `ix >= 0' failed.
$ grep '^conn=' slapd.2.log
conn=0 fd=9 ACCEPT from IP=127.0.0.1:46366 (IP=127.0.0.1:9012)
conn=0 op=0 BIND dn="cn=config" method=128
conn=0 op=0 BIND dn="cn=config" mech=SIMPLE ssf=0
conn=0 op=0 RESULT tag=97 err=0 text=
conn=0 op=1 do_search
conn=0 op=1 SRCH base="cn=config" scope=2 deref=0 filter="(objectClass=*)"
conn=0 op=1 SRCH attr=* +
conn=0 op=1 SEARCH RESULT tag=101 err=0 nentries=4 text=
conn=0 op=2 do_unbind
conn=0 op=2 UNBIND
conn=0 fd=9 closed
--
Hallvard