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Posted to issues@subversion.apache.org by "Julian Foad (JIRA)" <ji...@apache.org> on 2018/03/09 09:03:00 UTC
[jira] [Updated] (SVN-4722) checksum fail during commit when delta
is 16K
[ https://issues.apache.org/jira/browse/SVN-4722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julian Foad updated SVN-4722:
-----------------------------
Description:
As discussed
[https://mail-archives.apache.org/mod_mbox/subversion-dev/201803.mbox/%3C87lgf3fda2.fsf%40codematters.co.uk%3E]
[https://svn.haxx.se/dev/archive-2018-03/0070.shtml]
There is an error in the checksum code added to 1.9.7 to detect SHA1 collisions. The expanded length is calculated incorrectly and when the delta length is a multiple of 16K the checksum calculation stops early and fails.
Symptom: Commits fail with a false "Filesystem is corrupt" error.
was:
As discussed
[https://mail-archives.apache.org/mod_mbox/subversion-dev/201803.mbox/%3C87lgf3fda2.fsf%40codematters.co.uk%3E]
[https://svn.haxx.se/dev/archive-2018-03/0070.shtml]
There is an error in the checksum code added to 1.9.7 to detect SHA1 collisions. The expanded length is caculated incorrectly and when the delta length is a multiple of 16K the checksum calculation stops early and fails.
> checksum fail during commit when delta is 16K
> ---------------------------------------------
>
> Key: SVN-4722
> URL: https://issues.apache.org/jira/browse/SVN-4722
> Project: Subversion
> Issue Type: Bug
> Components: libsvn_fs_fs
> Affects Versions: 1.9.7
> Reporter: Philip Martin
> Priority: Major
>
> As discussed
> [https://mail-archives.apache.org/mod_mbox/subversion-dev/201803.mbox/%3C87lgf3fda2.fsf%40codematters.co.uk%3E]
> [https://svn.haxx.se/dev/archive-2018-03/0070.shtml]
> There is an error in the checksum code added to 1.9.7 to detect SHA1 collisions. The expanded length is calculated incorrectly and when the delta length is a multiple of 16K the checksum calculation stops early and fails.
> Symptom: Commits fail with a false "Filesystem is corrupt" error.
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