On Sat, 24 Jul 2021 03:17:11 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:

>> We are incorrectly passing source offset to ImageInputStream.readFully() 
>> which is getting used on destination buffer. streamPos maintained in each 
>> implementation of stream maintain's appropriate source offset while reading 
>> the data. Since we are completely utilizing destination buffer any offset 
>> greater than 0 would cause IOOBE. In our case we should use 0 as offset 
>> value.
>> 
>> Also to hit this code we need stream/file with at-least 1MB of IFD data, 
>> that's why there is no regression test. This change can be verified using 
>> image attached in JBS. All test run is green.
>
> 1024000 bytes does not look like a big problem especially if it is generated 
> on the fly during the test execution?
> You can try to load the data for our PYCC color profile and set one of its 
> tag data to a big chunk like icSigCopyrightTag, or you can try to just fill 
> it by zeros at the end.

@mrserb added regression test, please review.

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PR: https://git.openjdk.java.net/jdk/pull/4836

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