| 1 | When running on Linux/SPARC, OpenVPN version 2.3.6 and the most recent git master from github will crash with Bus error shortly after startup. |
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| 2 | This is 100% reproducible. These crashes did not happen with 2.3.3. Full |
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| 3 | description has been moved to an attachment due to Trac parsing errors. |
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| 4 | |
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| 5 | The console output looks like this: |
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| 6 | |
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| 7 | ========== |
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| 8 | # /usr/sbin/openvpn --config /etc/openvpn/openvpn.conf --writepid /var/run/openvpn.pid --setenv SVCNAME openvpn --cd /etc/openvpn --user openvpn --group openvpn --setenv PEER_DNS yes |
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| 9 | Thu Jan 1 18:22:51 2015 OpenVPN 2.3_git [git:branch-master/c3e1809f540db16c] sparc-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [MH] [IPv6] built on Dec 31 2014 |
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| 10 | Thu Jan 1 18:22:51 2015 library versions: OpenSSL 1.0.1j 15 Oct 2014, LZO 2.08 |
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| 11 | Thu Jan 1 18:22:51 2015 WARNING: you are using user/group/chroot/setcon without persist-tun -- this may cause restarts to fail |
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| 12 | Thu Jan 1 18:22:51 2015 WARNING: you are using user/group/chroot/setcon without persist-key -- this may cause restarts to fail |
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| 13 | Thu Jan 1 18:22:54 2015 TUN/TAP device tun0 opened |
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| 14 | Thu Jan 1 18:22:54 2015 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0 |
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| 15 | Thu Jan 1 18:22:54 2015 /bin/ip link set dev tun0 up mtu 1500 |
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| 16 | Thu Jan 1 18:22:54 2015 /bin/ip addr add dev tun0 local 10.12.0.1 peer 10.12.0.2 |
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| 17 | Thu Jan 1 18:22:54 2015 GID set to openvpn |
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| 18 | Thu Jan 1 18:22:54 2015 UID set to openvpn |
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| 19 | Thu Jan 1 18:22:54 2015 Could not determine IPv4/IPv6 protocol. Using AF_INET |
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| 20 | Thu Jan 1 18:22:54 2015 UDP link local (bound): [AF_INET][undef]:1194 |
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| 21 | Thu Jan 1 18:22:54 2015 UDP link remote: [AF_UNSPEC] |
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| 22 | Thu Jan 1 18:22:54 2015 ifconfig_pool_read(), in='adams,10.12.0.4', TODO: IPv6 |
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| 23 | Thu Jan 1 18:22:54 2015 succeeded -> ifconfig_pool_set() |
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| 24 | Thu Jan 1 18:22:54 2015 Initialization Sequence Completed |
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| 25 | Bus error |
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| 26 | ========== |
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| 27 | |
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| 28 | There is no core file and nothing in dmesg about this. |
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| 29 | |
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| 30 | I have tried running OpenVPN in gdb. The result looked like this: |
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| 31 | |
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| 32 | ========== |
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| 33 | # gdb --args /usr/sbin/openvpn --config /etc/openvpn/openvpn.conf --writepid /var/run/openvpn.pid --setenv SVCNAME openvpn --cd /etc/openvpn --user openvpn --group openvpn --setenv PEER_DNS yes |
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| 34 | GNU gdb (Gentoo 7.7.1 p1) 7.7.1 |
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| 35 | Copyright (C) 2014 Free Software Foundation, Inc. |
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| 36 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> |
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| 37 | This is free software: you are free to change and redistribute it. |
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| 38 | There is NO WARRANTY, to the extent permitted by law. Type "show copying" |
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| 39 | and "show warranty" for details. |
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| 40 | This GDB was configured as "sparc-unknown-linux-gnu". |
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| 41 | Type "show configuration" for configuration details. |
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| 42 | For bug reporting instructions, please see: |
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| 43 | <http://bugs.gentoo.org/>. |
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| 44 | Find the GDB manual and other documentation resources online at: |
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| 45 | <http://www.gnu.org/software/gdb/documentation/>. |
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| 46 | For help, type "help". |
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| 47 | Type "apropos word" to search for commands related to "word"... |
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| 48 | Reading symbols from /usr/sbin/openvpn...(no debugging symbols found)...done. |
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| 49 | (gdb) run |
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| 50 | Starting program: /usr/sbin/openvpn --config /etc/openvpn/openvpn.conf --writepid /var/run/openvpn.pid --setenv SVCNAME openvpn --cd /etc/openvpn --user openvpn --group openvpn --setenv PEER_DNS yes |
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| 51 | Thu Jan 1 18:39:19 2015 OpenVPN 2.3_git [git:branch-master/c3e1809f540db16c] sparc-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [MH] [IPv6] built on Dec 31 2014 |
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| 52 | Thu Jan 1 18:39:19 2015 library versions: OpenSSL 1.0.1j 15 Oct 2014, LZO 2.08 |
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| 53 | Thu Jan 1 18:39:19 2015 WARNING: you are using user/group/chroot/setcon without persist-tun -- this may cause restarts to fail |
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| 54 | Thu Jan 1 18:39:19 2015 WARNING: you are using user/group/chroot/setcon without persist-key -- this may cause restarts to fail |
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| 55 | Thu Jan 1 18:39:22 2015 TUN/TAP device tun0 opened |
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| 56 | Thu Jan 1 18:39:22 2015 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0 |
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| 57 | Thu Jan 1 18:39:22 2015 /bin/ip link set dev tun0 up mtu 1500 |
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| 58 | Thu Jan 1 18:39:22 2015 /bin/ip addr add dev tun0 local 10.12.0.1 peer 10.12.0.2 |
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| 59 | Thu Jan 1 18:39:22 2015 GID set to openvpn |
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| 60 | Thu Jan 1 18:39:22 2015 UID set to openvpn |
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| 61 | Thu Jan 1 18:39:22 2015 Could not determine IPv4/IPv6 protocol. Using AF_INET |
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| 62 | Thu Jan 1 18:39:22 2015 UDP link local (bound): [AF_INET][undef]:1194 |
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| 63 | Thu Jan 1 18:39:22 2015 UDP link remote: [AF_UNSPEC] |
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| 64 | Thu Jan 1 18:39:22 2015 ifconfig_pool_read(), in='adams,10.12.0.4', TODO: IPv6 |
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| 65 | Thu Jan 1 18:39:22 2015 succeeded -> ifconfig_pool_set() |
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| 66 | Thu Jan 1 18:39:22 2015 Initialization Sequence Completed |
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| 67 | |
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| 68 | Program received signal SIGBUS, Bus error. |
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| 69 | 0xf7fb8470 in _lzo_config_check () from /usr/lib/liblzo2.so.2 |
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| 70 | (gdb) bt |
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| 71 | #0 0xf7fb8470 in _lzo_config_check () from /usr/lib/liblzo2.so.2 |
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| 72 | #1 0x0002dca8 in ?? () |
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| 73 | Backtrace stopped: previous frame identical to this frame (corrupt stack?) |
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| 74 | ========== |
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| 75 | |
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| 76 | The backtrace suggests that bug might be in liblzo, however, the liblzo installation on this machine hasn't been updated or changed in about half a year. (Also, just because it's the last entry on the stack doesn't necessarily mean that that's where the bug is...) |
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| 77 | |
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| 78 | The linux distribution in use is Gentoo. There is a downstream bug report about the same bug here: https://bugs.gentoo.org/show_bug.cgi?id=532088 |
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