On 14/Jun/10 01:21, Pablo Neira Ayuso wrote: > Alessandro Vesely wrote: >> it has happened again (previous time was 5 May 2010). >> This time I used gdb rather than strace, but still don't know what's wrong: >> >> Calling recv on the nfq_fd had returned -512. (why?) >> At that point my daemon calls nfq_destroy_queue(), which does not return: >> >> (gdb) bt >> #0 0x00007ff3b6e50450 in recvfrom () from /lib/libc.so.6 >> #1 0x00007ff3b696105c in nfnl_talk () from /usr/lib/libnfnetlink.so.0 >> #2 0x00007ff3b79a429f in __build_send_cfg_msg (h=0x6073a0, command=2 '\002', queuenum=<value optimized out>, pf=0) >> at libnetfilter_queue.c:112 >> #3 0x00007ff3b79a430d in nfq_destroy_queue (qh=0x607410) at libnetfilter_queue.c:258 >> #4 0x00000000004021f7 in daemon_loop (h=0x6073a0, db=0x606570) at ibd-judge.c:477 >> #5 0x0000000000402a75 in main (argc=<value optimized out>, argv=<value optimized out>) at ibd-judge.c:739 >> >> Any idea? > > I think that this is fixed in: > > http://git.netfilter.org/cgi-bin/gitweb.cgi?p=libnetfilter_queue.git;a=commit;h=bc56a6becbd4c4edf743ca3bee32eb0329fc5e5a > > That fix is included in libnetfilter_queue-0.0.17. You seem to be using > an older version since you point to nfnl_talk() which is not used > anymore in the library. > > Upgrade and let us know if that fixes your problem. Thanks a lot, Pablo. Upgrading has been less of a pain than I would have anticipated, as it is in squeeze and dependencies are quite minimal. Now my filter is running with it. I'll wait to see if I still get problems. In case it serves other lenny users, the relevant steps for upgrading are: 1) ensure apt configuration reads squeeze too: the three files /etc/apt/sources.list /etc/apt/preferences /etc/apt/apt.conf should be set more or less as described in http://jaqque.sbih.org/kplug/apt-pinning.html 2# apt-get update 3# apt-get install -t testing libnetfilter-queue1 Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libnetfilter-queue-dev libnetfilter-queue1-dbg libnfnetlink-dev libnfnetlink0 The following packages will be upgraded: libnetfilter-queue-dev libnetfilter-queue1 libnetfilter-queue1-dbg libnfnetlink-dev libnfnetlink0 5 upgraded, 0 newly installed, 0 to remove and 1225 not upgraded. Need to get 64.5kB of archives. After this operation, 4096B of additional disk space will be used. Do you want to continue [Y/n]? Y ... Now, I have # apt-cache policy libnetfilter-queue1 libnetfilter-queue1: Installed: 0.0.17-1 Candidate: 0.0.17-1 Version table: *** 0.0.17-1 0 200 http://debian.fastweb.it squeeze/main Packages 100 /var/lib/dpkg/status 0.0.13-1 0 800 http://debian.fastweb.it lenny/main Packages -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
