Date: Thu, 8 Aug 2002 14:41:49 -0700 (PDT) From: Nick Johnson <freebsd@spatula.net> To: freebsd-java@freebsd.org Subject: More information about segv in RandomAccessFile native method Message-ID: <20020808141034.X13773-100000@turing.morons.org> In-Reply-To: <20020808093049.T13773-100000@turing.morons.org>
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Here's some more information... I finally got a core file that was worth
something:
#0 0x280b4b0c in kill () from /usr/lib/libc.so.4
#1 0x280f4eea in abort () from /usr/lib/libc.so.4
#2 0x281623d9 in Abort () from /usr/local/jdk1.3.1/jre/lib/i386/classic/libjvm.so
#3 0x28189596 in panicHandler () from /usr/local/jdk1.3.1/jre/lib/i386/classic/libjvm.so
#4 0x28077874 in userSignalHandler () from /usr/local/jdk1.3.1/jre/lib/i386/green_threads/libhpi.so
#5 0x28077834 in intrDispatch () from /usr/local/jdk1.3.1/jre/lib/i386/green_threads/libhpi.so
#6 0x28070a51 in intrDispatchMD () from /usr/local/jdk1.3.1/jre/lib/i386/green_threads/libhpi.so
#7 0xbfbfffac in ?? ()
#8 0x28076068 in sysSeek () from /usr/local/jdk1.3.1/jre/lib/i386/green_threads/libhpi.so
#9 0x28175976 in JVM_Lseek () from /usr/local/jdk1.3.1/jre/lib/i386/classic/libjvm.so
#10 0x3c6fd734 in Java_java_io_RandomAccessFile_length () from /usr/local/freebsd-jdk1.3.1-p7-gcc31/jre/lib/i386/libjava.so
#11 0x3d75550e in dispatchJNINativeMethod () from /usr/local/freebsd-jdk1.3.1-p7-gcc31/jre/lib/i386/libOpenJIT.so
sysSeek seems to be defined in sys_api_td.c, and my best guess about
what's going on is that this is failing:
mon = fdmon[fd];
sysAssert(mon != NULL);
Since that would be the one thing in that block of code that strikes me as
an obvious candidate for something which might cause a panic.
So I guess the question now is this: under what circumstances would
fdmon[fd] turn up null when trying to do a seek?
Nick
On Thu, 8 Aug 2002, Nick Johnson wrote:
> Lucene keeps bombing periodically, and always in this same place. If I
> have some spare time I'll see if I can hunt down what's happening. Has
> anyone else had something similar happen?
>
> "tcpConnection-6802-12" (TID:0x2c0ece00, sys_thread_t:0x8b4a080,
> state:R) prio=5
> at java.io.RandomAccessFile.length(Native Method)
> at org.apache.lucene.store.FSInputStream.<init>(Unknown Source)
> at org.apache.lucene.store.FSDirectory.openFile(Unknown Source)
> at org.apache.lucene.index.TermInfosReader.<init>(Unknown Source)
> at org.apache.lucene.index.SegmentReader.<init>(Unknown Source)
> at org.apache.lucene.index.SegmentReader.<init>(Unknown Source)
> at org.apache.lucene.index.IndexReader$1.doBody(Unknown Source)
> at org.apache.lucene.store.Lock$With.run(Unknown Source)
> at org.apache.lucene.index.IndexReader.open(Unknown Source)
> at org.apache.lucene.index.IndexReader.open(Unknown Source)
> at org.apache.lucene.search.IndexSearcher.<init>(Unknown Source)
>
>
>
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