10.3-RELEASE amd64 segmentation faults in wc, sh...

[Konstantin Belousov]

On Thu, Jun 30, 2016 at 01:57:32PM +0200, Patrick Lamaiziere wrote:
> Hello,
> 
> I'm building a pair of firewall with 10.3 and I see some rare
> segmentation faults (5 in a week) in processes like wc, sh or ifstated.
> 
> wc, sh are used by some scripts who check the state of the interfaces
> and the state of bgp sessions. Ifstated called theses scripts too.
> 
> I thought there was a bug in ifstated so I made a small program in
> perl to do the same thing but the problem is not in ifstated.
> 
> The machines are some Dell R730, I've checked the memory with
> memtest86 for one week without error. The problem occurs on both
> firewalls so i don't think this is a hardware problem.
> 
> Any idea? 
> 
> Thanks, regards.
> 
> ifstated
> --------
> Core was generated by `ifstated'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /usr/local/lib/libevent-2.0.so.5...(no debugging symbols found)...done.
> Loaded symbols for /usr/local/lib/libevent-2.0.so.5
> Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done.
> Loaded symbols for /lib/libc.so.7
> Reading symbols from /lib/libthr.so.3...(no debugging symbols found)...done.
> Loaded symbols for /lib/libthr.so.3
> Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x0000000800e23a67 in pthread_getspecific () from /lib/libthr.so.3
> Cannot find new threads: generic error
> 
> sh
> --
> Core was generated by `sh'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x000000080063351b in _rtld_atfork_post () from /libexec/ld-elf.so.1
> 
> wc
> --
> Core was generated by `wc'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x0000000800612524 in _rtld_atfork_post () from /libexec/ld-elf.so.1

This is most likely the problems, reported and fixed in r300758,
PR 204764 r302063, and PR 204426 r302236.  First and second commits
are already in stable/10, the third one will be merged in several days.