[ https://www.modsecurity.org/tracker/browse/MODSEC-173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Breno Silva Pinto resolved MODSEC-173.
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Resolution: Fixed
> under high load (depending on IO speed), auditlog could loose entries due to race condition in apr_dir_make_recursive()
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: MODSEC-173
> URL: https://www.modsecurity.org/tracker/browse/MODSEC-173
> Project: ModSecurity
> Issue Type: Bug
> Security Level: Normal
> Components: Logging
> Affects Versions: 2.5.12
> Environment: using libapr-1.so.0.4.2 from apache httpd 2.2.16
> Reporter: Christoph Moench-Tegeder
> Assignee: Breno Silva Pinto
> Fix For: 2.6.0
>
> Attachments: msc_logging.c.diff
>
>
> When running multiple threads with apache, several audit log entries might be written at (more or less) exactly the same time. In this case apr_dir_make_recursive() can return APR_EEXIST (classical stat()/mkdir() race condition). In this case, writing the audit log entry will fail with the message "Failed to create subdirectories: File exists".
> To work around this issue, one should allow APR_EEXIST from apr_dir_make_recursive(), too.
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