Hi,
I'm investigating what appears to be a possible regression after upgrading
Tomcat from 9.0.118 (working) to 9.0.119.
Environment:
* Apache Tomcat 9.0.119
* Java 21
* Running inside Apache Karaf
After the upgrade, one of our release pipeline tests consistently fails while
reading the body of an HTTP POST request.
The exception is:
java.lang.IllegalArgumentException: newPosition > limit: (8175 > 9)
at java.base/java.nio.Buffer.createPositionException(Buffer.java:352)
at java.base/java.nio.Buffer.position(Buffer.java:327)
at java.base/java.nio.ByteBuffer.position(ByteBuffer.java:1551)
at org.apache.tomcat.util.buf.B2CConverter.convert(B2CConverter.java:300)
at
org.apache.catalina.connector.InputBuffer.realReadChars(InputBuffer.java:485)
at
org.apache.catalina.connector.InputBuffer.checkCharBufferEof(InputBuffer.java:691)
at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:517)
at org.apache.catalina.connector.CoyoteReader.read(CoyoteReader.java:108)
...
The application code is simply:
private String loadXMLContent(HttpServletRequest request) throws IOException {
StringBuffer crBuff = new StringBuffer();
try (Reader reader = request.getReader()) {
char[] chBuff = new char[500];
int charsNumber;
while ((charsNumber = reader.read(chBuff)) != -1) {
crBuff.append(chBuff, 0, charsNumber);
}
}
return crBuff.toString();
}
The exception is thrown from reader.read(...); there is no custom buffering or
manipulation of the request stream.
The request body is XML and is normally processed without problems on the
previous Tomcat version.
I'd like to ask:
1. Has anyone seen a similar IllegalArgumentException originating from
B2CConverter / InputBuffer after upgrading to 9.0.119?
2. Are there any known changes in the request body decoding path that could
explain this behavior?
3. Is there any additional logging or diagnostics you would recommend to
determine whether this is a Tomcat issue or an application/environment issue?
Best Regards,
Yavor Stankov
SEEBURGER AG Vorstand/SEEBURGER Executive Board:
Sitz der Gesellschaft/Registered Office: Axel Haas, Michael
Kleeberg, Dr. Martin Kuntz
Edisonstr. 1
D-75015 Bretten Vorsitzende des Aufsichtsrats/Chairperson of the
SEEBURGER Supervisory Board:
Tel.: 07252 / 96 - 0 Prof. Dr. Simone Zeuchner-Egli
Fax: 07252 / 96 - 2222
Internet: http://www.seeburger.de Registergericht/Commercial
Register:
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