Red Hat Bugzilla – Bug 128729
Large java processes core dump on hugemem kernel
Last modified: 2007-11-30 17:07:03 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.1) Gecko/20040707 Description of problem: We have large weblogic 8.1sp2 and 8.1sp3 processes that occasionally but regularly crash and core dump on the hugemem kernel. This happens under Sun JVMs 1.4.2_04, 1.4.2_05, and jrockit 8.2. BEA tech support has found a similar case and referred us to the "[PATCH] bogus sigaltstack calls by rt_sigreturn" patch recently accepted into 2.6.7. The client customer performed this patch (modified slightly because of the differences in the code in 2.4AS3.0 kernel and stock 2.6) and the problems seem to have gone away (no further tech support requests to BEA). Version-Release number of selected component (if applicable): kernel-2.4.21-15.EL How reproducible: Sometimes Steps to Reproduce: 1. Run large java apps on hugemem kernel with large amounts of RAM (we have 12Gb in affected systems) 2. wait 3. Actual Results: after a while, apps would core dump, with large call stacks Expected Results: app should run without issue Additional info: Happens 12Gb machines, and 36Gb machines.
Like to add myself to this. Our weblogic server crashes "every so often" for no apparent reason leaving a large core file. OS : 2.4.21-15.ELhugemem MemTotal: 5931956 kB GDB : Core was generated by `/usr/local/bea/jdk141_05/bin/java'. Program terminated with signal 11, Segmentation fault.
FYI, here is the patch for those interested. http://linux.bkbits.net:8080/linux-2.6/gnupatch@40b035f1haADUZ5Ujxb0PPoxPYHX_g We will try to move off of the hugemem kernel before trying this patch. (fortunately that is an option for us right now)
After reading the patch and this bug, I felt pretty sure that our problem was related to this hugemem kernel problem, but after switching to the smp kernel...the problem is still happening. The only noticible differences are now the stack trace produces this message: # HotSpot Virtual Machine Error, Internal Error # Please report this error at # http://java.sun.com/cgi-bin/bugreport.cgi # # Java VM: Java HotSpot(TM) Client VM (1.4.1_05-b01 mixed mode) # # Error ID: 43113F32554E54494D45110E4350500305 # # Problematic Thread: prio=1 tid=0x0x83f6028 nid=0x7a0 runnable # and the crashes now happen at a regular time (around midnight) instead of at random times.
Seems closed. There is a fix to the AS hugemem kernel as of kernel update 18 (the beta for U3). The U3 kernel has solved our problems.
Closing per above comment (seems to be dup of bug 123253). *** This bug has been marked as a duplicate of 123253 ***