On 2016-09-14 16:08, Vincent McIntyre wrote: > On Wed, Sep 14, 2016 at 09:29:18AM +1000, Vincent McIntyre wrote: > > > Also you might want to use the console (alt+f2) to run wget by hand and > > > see if the issue happen with all hosts or only some of them. > > > > I tried to wget pages from a few web sites from the alt+f2 console. > > It segfaulted every time when I used a DNS name in the URL, > > but worked if I used an IP address in the URL. > > ping does the same thing; segfaults only when using domain names. > > > > If I put an entry in /etc/hosts and try to access that hostname, > > wget and ping also segfault, until I add this line to nsswitch.conf: > > > > hosts: files dns > > > > Then they both work for that hostname. > > The only other nsswitch.conf lines are for passwd, group & shadow. > > > > I was able to netcat busybox & the coredump to a wheezy machine > and got this backtrace, which does not look like it is much help... > > % gdb ./ping ./ping.core > GNU gdb (GDB) 7.4.1-debian > ... > warning: Can't read pathname for load map: Input/output error. > > warning: Could not load shared library symbols for 4 libraries, e.g. > /lib/libc.so.6. > Use the "info sharedlibrary" command to see the complete listing. > Do you need "set solib-search-path" or "set sysroot"? > Core was generated by `ping ftp.au.debian.org'. > Program terminated with signal 11, Segmentation fault. > #0 0x00007f826609d0ca in ?? () > (gdb) bt full > #0 0x00007f826609d0ca in ?? () > No symbol table info available. > #1 0x0000000000000000 in ?? () > No symbol table info available. > (gdb) q
Have you installed libc6-dbg on this wheezy machine? Anyway I am afraid that gdb is confused as the libc6 in debian-installer got some symbols removed... Aurelien -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurel...@aurel32.net http://www.aurel32.net
