Salvatore. The problem occurs if the dnsmasq binary is compiled against libc headers which #define SO_REUSEPORT and then run on a kernel which doesn't support that option. I guess the security builds have picked up SO_REUSEPORT from a libc backport.
The fix applied at the time was: http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=56a1142f033234e3ee3b6361e9a1bcdbe606f816 Cheers, Simon. On 06/05/15 15:16, Salvatore Bonaccorso wrote: > Hi Ian and Luca, > > On Wed, May 06, 2015 at 12:59:03PM +0200, Luca Olivetti wrote: >> On Wed, 06 May 2015 11:30:35 +0100 Ian Campbell <i...@debian.org> wrote: >> >> >>> I've just noticed that running kernel on the machine is 3.2.57-3+deb7u1 >>> which is quite out of date wrt point releases etc. Looking at the >>> changelog there have been dozens of stable update fixes, one of which >>> might be relevant here. >>> >>> I'll reboot when I get home and see if perhaps that fixes the issue. >> >> I have the same problem, but my machine uses 3.2.68: >> >> >> #uname >> -ahttp://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=56a1142f033234e3ee3b6361e9a1bcdbe606f816 >> Linux lacie 3.2.0-4-kirkwood #1 Debian 3.2.68-1+deb7u1 armv5tel GNU/Linux >> >> >> I had to comment the "bind-interfaces" line from /etc/dnsmasq.conf in >> order to make it start. > > Thanks to both for feedback. Might it be a problem with the armel > build? If you look at the build log (which I have uploaded to [1]) on > the armel chroot to build the package on the buildd there installed > linux-libc-dev which is not from stable but from backports, and indeed > for linux >= 3.9. Thus the armel build will have (dhcp.c): > > [...] > int rc = setsockopt(fd, 1, 15, &oneopt, sizeof(oneopt)); > > if (rc == -1) > die(dcgettext (((void *)0), "failed to set SO_REUSE{ADDR|PORT} on DHCP > socket: %s", __LC_MESSAGES), ((void *)0), 2); > } > [...] > > Could either of you try to rebuild dnsmasq in a clean chroot and see > if the problem resolves? That the buildd have 3.14.13-2~bpo70+1 > installed is odd and should not be. > > [1] > https://people.debian.org/~carnil/tmp/dnsmasq/dnsmasq_2.62-3+deb7u2_armel-20150505-1143.gz > [2] https://lwn.net/Articles/542629/ > > Regards, > Salvatore > -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
