Bamboo sometimes fails on sshd-SshClient thread

[Alexander Semigrodskikh]

Hello All!

My Bamboo fails about once a week. When it fails, there is no high load. The Java process of Bamboo just disappears. The respective files hs_err_pid*.log show that failures are in java.math.BigInteger.montReduce and the then-current threads have "sshd-SshClient" in the beginning of their names.

The typical beginning of one of such files hs_err_pid*.log looks like the text below:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f4d7c4d2d6f, pid=13712, tid=139968149939968
#
# JRE version: Java(TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.51-b03 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# J 49943 C2 java.math.BigInteger.montReduce([I[III)[I (99 bytes) @ 0x00007f4d7c4d2d6f [0x00007f4d7c4d2960+0x40f]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#
---------------  T H R E A D  ---------------
Current thread (0x00007f4d1c094000):  JavaThread "sshd-SshClient[5d2748ee]-nio2-thread-5" [_thread_in_Java, id=14454, stack(0x00007f4cdfcb6000,0x00007f4cdfdb7000)

Please, help.

Thank you if you answer.

[Jeremy Owen]

Maybe a bit late, but please take a look at this new knowledge base article: https://confluence.atlassian.com/bamkb/bamboo-server-crashes-due-to-segmentation-fault-on-biginteger-methods-855542560.html