5:52 p.m.
Crash ending an event driven HTTP connection
--------------------------------------------
Key: JBWEB-125
URL: https://jira.jboss.org/jira/browse/JBWEB-125
Project: JBoss Web
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: Core
Affects Versions: JBossWeb-2.1.1.GA
Reporter: Remy Maucherat
Assignee: Mladen Turk
I experienced a very rare crash when using events (bayeux stock ticker on localhost + F5),
when setting back the socket timeout at the end of the processing. The odd part is that it
seems to be caught with an exception (very good) but causes a JVM crash anyway.
Oct 31, 2008 5:31:47 PM org.apache.coyote.http11.Http11AprProcessor event
SEVERE: Error processing request
org.apache.tomcat.jni.Error: Socket operation on non-socket
at org.apache.tomcat.jni.Socket.timeoutSet(Native Method)
at org.apache.coyote.http11.Http11AprProcessor.action(Http11AprProcessor.java:1262)
at org.apache.coyote.Response.action(Response.java:184)
at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:272)
at org.apache.coyote.http11.Http11AprProcessor.event(Http11AprProcessor.java:786)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.event(Http11AprProtocol.java:544)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1988)
at java.lang.Thread.run(Thread.java:636)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00b43521, pid=5850, tid=101182352
#
# Java VM: OpenJDK Server VM (1.6.0-b09 mixed mode linux-x86)
# Problematic frame:
# C [libtcnative-1.so.0.1.15+0xf521] Java_org_apache_tomcat_jni_Socket_timeoutSet+0x61
#
# An error report file with more information is saved as:
# /home/remm/Work/jbossweb/jbossweb-2.1.x/output/build/hs_err_pid5850.log
[thread 97975184 also had an error]
#
# If you would like to submit a bug report, please visit:
# http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Assigning to Mladen since the error hints the crash can be avoided (as it seems detected
already).
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5:54 p.m.
New subject: [JBoss JIRA] Updated: (JBWEB-125) Crash ending an event driven HTTP connection
[
https://jira.jboss.org/jira/browse/JBWEB-125?page=com.atlassian.jira.plug...
]
Remy Maucherat updated JBWEB-125:
---------------------------------
Attachment: hs_err_pid5850.log
JVM dump of the crash
Crash ending an event driven HTTP connection
--------------------------------------------
Key: JBWEB-125
URL: https://jira.jboss.org/jira/browse/JBWEB-125
Project: JBoss Web
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Core
Affects Versions: JBossWeb-2.1.1.GA
Reporter: Remy Maucherat
Assignee: Mladen Turk
Attachments: hs_err_pid5850.log
I experienced a very rare crash when using events (bayeux stock ticker on localhost +
F5), when setting back the socket timeout at the end of the processing. The odd part is
that it seems to be caught with an exception (very good) but causes a JVM crash anyway.
Oct 31, 2008 5:31:47 PM org.apache.coyote.http11.Http11AprProcessor event
SEVERE: Error processing request
org.apache.tomcat.jni.Error: Socket operation on non-socket
at org.apache.tomcat.jni.Socket.timeoutSet(Native Method)
at org.apache.coyote.http11.Http11AprProcessor.action(Http11AprProcessor.java:1262)
at org.apache.coyote.Response.action(Response.java:184)
at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:272)
at org.apache.coyote.http11.Http11AprProcessor.event(Http11AprProcessor.java:786)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.event(Http11AprProtocol.java:544)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1988)
at java.lang.Thread.run(Thread.java:636)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00b43521, pid=5850, tid=101182352
#
# Java VM: OpenJDK Server VM (1.6.0-b09 mixed mode linux-x86)
# Problematic frame:
# C [libtcnative-1.so.0.1.15+0xf521] Java_org_apache_tomcat_jni_Socket_timeoutSet+0x61
#
# An error report file with more information is saved as:
# /home/remm/Work/jbossweb/jbossweb-2.1.x/output/build/hs_err_pid5850.log
[thread 97975184 also had an error]
#
# If you would like to submit a bug report, please visit:
# http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Assigning to Mladen since the error hints the crash can be avoided (as it seems detected
already).
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5:26 p.m.
New subject: [JBoss JIRA] Commented: (JBWEB-125) Crash ending an event driven HTTP connection
[
https://jira.jboss.org/jira/browse/JBWEB-125?page=com.atlassian.jira.plug...
]
Mladen Turk commented on JBWEB-125:
-----------------------------------
Exception thrown is caused by:
>> network.c : timeoutSet
if (!sock) {
tcn_ThrowAPRException(e, APR_ENOTSOCK);
return APR_ENOTSOCK;
}
<<<
However, crash and exception are not caused by the same socket.
I presume there is a race condition that closes the socket, setting it to zero afterwards
and timeoutSet is called at the same momemnt by some other thread.
If timeoutSet happens while socket is beeing closed and its
long pointer wasn't set to zero yet, it will reference the zombie memory location.
This is probably related to JBAS-124 as well.
The point is that socket != 0 should be checked before calling
native method. Native is thin layer, and doesn't care much
about validity of provided params. It's up to the agregator to take
care of data validity and access synchronisation.
Crash ending an event driven HTTP connection
--------------------------------------------
Key: JBWEB-125
URL: https://jira.jboss.org/jira/browse/JBWEB-125
Project: JBoss Web
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Core
Affects Versions: JBossWeb-2.1.1.GA
Reporter: Remy Maucherat
Assignee: Mladen Turk
Attachments: hs_err_pid5850.log
I experienced a very rare crash when using events (bayeux stock ticker on localhost +
F5), when setting back the socket timeout at the end of the processing. The odd part is
that it seems to be caught with an exception (very good) but causes a JVM crash anyway.
Oct 31, 2008 5:31:47 PM org.apache.coyote.http11.Http11AprProcessor event
SEVERE: Error processing request
org.apache.tomcat.jni.Error: Socket operation on non-socket
at org.apache.tomcat.jni.Socket.timeoutSet(Native Method)
at org.apache.coyote.http11.Http11AprProcessor.action(Http11AprProcessor.java:1262)
at org.apache.coyote.Response.action(Response.java:184)
at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:272)
at org.apache.coyote.http11.Http11AprProcessor.event(Http11AprProcessor.java:786)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.event(Http11AprProtocol.java:544)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1988)
at java.lang.Thread.run(Thread.java:636)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00b43521, pid=5850, tid=101182352
#
# Java VM: OpenJDK Server VM (1.6.0-b09 mixed mode linux-x86)
# Problematic frame:
# C [libtcnative-1.so.0.1.15+0xf521] Java_org_apache_tomcat_jni_Socket_timeoutSet+0x61
#
# An error report file with more information is saved as:
# /home/remm/Work/jbossweb/jbossweb-2.1.x/output/build/hs_err_pid5850.log
[thread 97975184 also had an error]
#
# If you would like to submit a bug report, please visit:
# http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Assigning to Mladen since the error hints the crash can be avoided (as it seems detected
already).
--
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7:11 p.m.
New subject: [JBoss JIRA] Commented: (JBWEB-125) Crash ending an event driven HTTP connection
[
https://jira.jboss.org/jira/browse/JBWEB-125?page=com.atlassian.jira.plug...
]
Remy Maucherat commented on JBWEB-125:
--------------------------------------
I have a problem with that. It's not accepatble that this stuff does not have basic
robustness. Note that I'm asking for "never crash", like NIO, not
"never screw up" like when you're doing things like concurrent writes
(I'm only calling setTimeout here).
I can see that:
- the JVM dump is also about a timeoutSet, like the exception; the stack trace looks
legitimate (the connection is done, switch back to normal mode), but may be called on
sockets which are gone (and caused some nasty poll error); obviously that's not very
useful, so I will fix that to not call it if the socket got there due to an error in the
poller
- if the native layer does not care at all about robustness, then you should be consistent
abd remove your "if (!sock)" check
Crash ending an event driven HTTP connection
--------------------------------------------
Key: JBWEB-125
URL: https://jira.jboss.org/jira/browse/JBWEB-125
Project: JBoss Web
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Core
Affects Versions: JBossWeb-2.1.1.GA
Reporter: Remy Maucherat
Assignee: Mladen Turk
Attachments: hs_err_pid5850.log
I experienced a very rare crash when using events (bayeux stock ticker on localhost +
F5), when setting back the socket timeout at the end of the processing. The odd part is
that it seems to be caught with an exception (very good) but causes a JVM crash anyway.
Oct 31, 2008 5:31:47 PM org.apache.coyote.http11.Http11AprProcessor event
SEVERE: Error processing request
org.apache.tomcat.jni.Error: Socket operation on non-socket
at org.apache.tomcat.jni.Socket.timeoutSet(Native Method)
at org.apache.coyote.http11.Http11AprProcessor.action(Http11AprProcessor.java:1262)
at org.apache.coyote.Response.action(Response.java:184)
at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:272)
at org.apache.coyote.http11.Http11AprProcessor.event(Http11AprProcessor.java:786)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.event(Http11AprProtocol.java:544)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1988)
at java.lang.Thread.run(Thread.java:636)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00b43521, pid=5850, tid=101182352
#
# Java VM: OpenJDK Server VM (1.6.0-b09 mixed mode linux-x86)
# Problematic frame:
# C [libtcnative-1.so.0.1.15+0xf521] Java_org_apache_tomcat_jni_Socket_timeoutSet+0x61
#
# An error report file with more information is saved as:
# /home/remm/Work/jbossweb/jbossweb-2.1.x/output/build/hs_err_pid5850.log
[thread 97975184 also had an error]
#
# If you would like to submit a bug report, please visit:
# http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Assigning to Mladen since the error hints the crash can be avoided (as it seems detected
already).
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6:04 p.m.
New subject: [JBoss JIRA] Resolved: (JBWEB-125) Crash ending an event driven HTTP connection
[
https://jira.jboss.org/jira/browse/JBWEB-125?page=com.atlassian.jira.plug...
]
Remy Maucherat resolved JBWEB-125.
----------------------------------
Resolution: Cannot Reproduce Bug
Ok, I can't reproduce it again, let's forget about it for now.
Crash ending an event driven HTTP connection
--------------------------------------------
Key: JBWEB-125
URL: https://jira.jboss.org/jira/browse/JBWEB-125
Project: JBoss Web
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Core
Affects Versions: JBossWeb-2.1.1.GA
Reporter: Remy Maucherat
Assignee: Mladen Turk
Attachments: hs_err_pid5850.log
I experienced a very rare crash when using events (bayeux stock ticker on localhost +
F5), when setting back the socket timeout at the end of the processing. The odd part is
that it seems to be caught with an exception (very good) but causes a JVM crash anyway.
Oct 31, 2008 5:31:47 PM org.apache.coyote.http11.Http11AprProcessor event
SEVERE: Error processing request
org.apache.tomcat.jni.Error: Socket operation on non-socket
at org.apache.tomcat.jni.Socket.timeoutSet(Native Method)
at org.apache.coyote.http11.Http11AprProcessor.action(Http11AprProcessor.java:1262)
at org.apache.coyote.Response.action(Response.java:184)
at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:272)
at org.apache.coyote.http11.Http11AprProcessor.event(Http11AprProcessor.java:786)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.event(Http11AprProtocol.java:544)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1988)
at java.lang.Thread.run(Thread.java:636)
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00b43521, pid=5850, tid=101182352
#
# Java VM: OpenJDK Server VM (1.6.0-b09 mixed mode linux-x86)
# Problematic frame:
# C [libtcnative-1.so.0.1.15+0xf521] Java_org_apache_tomcat_jni_Socket_timeoutSet+0x61
#
# An error report file with more information is saved as:
# /home/remm/Work/jbossweb/jbossweb-2.1.x/output/build/hs_err_pid5850.log
[thread 97975184 also had an error]
#
# If you would like to submit a bug report, please visit:
# http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Assigning to Mladen since the error hints the crash can be avoided (as it seems detected
already).
--
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5653
days inactive
5656
days old
4 comments
2 participants
participants (2)
-
Mladen Turk (JIRA) -
Remy Maucherat (JIRA)