Public bug reported:
We are experiencing random segfaults on our pdnsd daemon.
System versions:
Ubuntu 16.04.1 LTS
Arch: 64bits
pdnsd version: 1.2.9a-par-3
libc6 version: 2.23-0ubuntu3
kernel version: Linux api 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
In syslog:
Sep 24 07:05:35 api kernel: [84418.840445] pdnsd[32156]: segfault at
7f18f395cd13 ip 00007f18f456decf sp 00007f18f2158bc0 error 4 in
libpthread-2.23.so[7f18f4566000+18000]
I enabled core dump, apport report is attached to this issue.
When trying to backtrace the segfault:
Core was generated by `/usr/sbin/pdnsd --daemon -p /var/run/pdnsd.pid'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __pthread_create_2_1 (newthread=<optimized out>, attr=<optimized out>,
start_routine=<optimized out>, arg=<optimized out>) at pthread_create.c:713
713 pthread_create.c: No such file or directory.
[Current thread is 1 (Thread 0x7f34be48a700 (LWP 2991))]
(gdb) bt
#0 __pthread_create_2_1 (newthread=<optimized out>, attr=<optimized out>,
start_routine=<optimized out>, arg=<optimized out>) at pthread_create.c:713
#1 0x000000000040ece5 in ?? ()
#2 0x00007f34c089e6fa in start_thread (arg=0x7f34be48a700) at
pthread_create.c:333
#3 0x00007f34c05d4b5d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
pdnsd config file:
// Read the pdnsd.conf(5) manpage for an explanation of the options.
/* Note: this file is overriden by automatic config files when
/etc/default/pdnsd AUTO_MODE is set and that
/usr/share/pdnsd/pdnsd-$AUTO_MODE.conf exists
*/
global {
perm_cache = 2048;
cache_dir = "/var/cache/pdnsd";
run_as = "pdnsd";
server_ip = 127.0.0.1;
status_ctl = on;
paranoid = on;
min_ttl = 15m; // Retain cached entries at least 15m.
max_ttl = 1w;
timeout = 10; // Global timeout option (10 seconds).
neg_rrs_pol = on;
par_queries = 1;
}
server {
label="resolvconf";
file="/var/run/resolvconf/interface/eth0.dhclient";
proxy_only=on;
}
source {
owner=localhost;
file="/etc/hosts";
}
rr {
name=localhost;
reverse=on;
a=127.0.0.1;
owner=localhost;
soa=localhost,root.localhost,42,86400,900,86400,86400;
}
/* vim:set ft=c: */
** Affects: pdnsd (Ubuntu)
Importance: Undecided
Status: New
** Tags: pdnsd segfault
** Attachment added: "pdnsd apport crash report"
https://bugs.launchpad.net/bugs/1627270/+attachment/4747609/+files/_usr_sbin_pdnsd.0.crash
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1627270
Title:
Random segfaults on __pthread_create_2_1
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pdnsd/+bug/1627270/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
