[Sshguard-users] core dump after upgrade due to blacklist

[Chris St D. <ch...@ct...>]

I upgraded from 1.6.0 to 1.6.1 and it started crashing on load.

    Bus error (core dumped)

Here is a backtrace, tho it doesn't look that useful. I still have the 
core file so I can generate better ones with instructions.

    #0  0x0000000800c24b33 in getenv () from /lib/libc.so.7
    [New Thread 801406800 (LWP 101216/sshguard)]
    [New Thread 801406400 (LWP 101479/sshguard)]
    (gdb) bt
    #0  0x0000000800c24b33 in getenv () from /lib/libc.so.7
    #1  0x0000000800c04479 in tzset () from /lib/libc.so.7
    #2  0x0000000800c04c56 in ctime_r () from /lib/libc.so.7
    #3  0x0000000800c01ca1 in vsyslog () from /lib/libc.so.7
    #4  0x0000000800c01b7b in syslog () from /lib/libc.so.7
    #5  0x0000000000404125 in ?? ()
    #6  0x00000000004028a6 in ?? ()
    #7  0x000000000040236f in ?? ()
    #8  0x00000008006c4000 in ?? ()
    #9  0x0000000000000000 in ?? ()

A little experimenting showed that it was being caused by something in 
the blacklist file. Renaming the file and letting it create a new one 
fixed it.

Here is a copy of the file. Hopefully a dev can reproduce the crash with it.

    # SSHGuard blacklist file ( http://www.sshguard.net/ ).
    # Format of entries: BLACKLIST_TIMESTAMP|SERVICE|ADDRESS_TYPE|ADDRESS
    1437287630|100|4|5.231.228.91
    1437315019|100|4|222.186.52.213
    1437516671|100|4|58.52.134.5
    1437651459|100|4|222.186.42.218
    1438097148|100|4|104.149.197.97
    1438128829|100|4|222.186.56.112
    1438296390|100|4|5.255.144.81
    1438391422|100|4|125.39.170.138
    1438435051|100|4|169.54.233.117
    1438538121|100|4|111.73.46.231
    1438547318|100|4|111.20.145.210
    1438584253|100|4|222.186.34.86
    1438786729|100|4|203.124.106.16
    1438924282|100|4|218.2.22.36
    1439138420|100|4|117.21.191.209
    1439162584|100|4|222.186.21.46
    1439215230|100|4|222.186.30.21
    1439247605|100|4|114.241.155.156
    1439247705|100|4|114.241.130.204
    1439247740|100|4|114.241.137.4
    1439247948|100|4|123.123.213.36
    1439247981|100|4|114.241.157.237
    1439248058|100|4|114.241.135.160
    1439248113|100|4|123.123.215.187
    1439248458|100|4|123.123.214.60
    1439468360|100|4|61.186.245.211
    1439468360|100|4|113.204.53.134
    1439540283|100|4|169.54.233.126
    1439811166|100|4|211.37.45.100
    1439948790|100|4|119.254.16.13
    1440049115|100|4|103.254.110.52
    1440349237|100|4|219.235.4.119
    1440558369|100|4|61.160.212.144
    1440810164|100|4|169.54.233.120
    1441038197|100|4|61.183.35.86
    1441257970|100|4|222.186.15.92
    1441346100|100|4|221.12.5.107
    1441599273|100|4|221.231.6.245
    1441780504|100|4|222.186.190.55
    1442222411|100|4|222.186.56.107
    1442434123|100|4|222.186.56.114
    1442490491|100|4|169.54.233.121
    1443104332|100|4|222.186.30.202

Other info

    root@Rin:/ # sshguard -v
    sshguard 1.6.1

    root@Rin:/ # uname -a
    FreeBSD Rin.ctgameinfo.com 10.1-RELEASE-p15 FreeBSD 10.1-RELEASE-p15
    #0: Tue Jul 21 18:00:00 UTC 2015
    ro...@am...:/usr/obj/usr/src/sys/GENERIC amd64