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<a href="https://gitlab.rtems.org/opticron">Kinsey Moore</a> created an issue: <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5072">#5072</a>
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Assignee: Kinsey Moore
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<a href="#summary" aria-hidden="true" class="anchor" id="user-content-summary" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Summary</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">The rtime decompressor appears to have a bug when handling corrupted/bad compressed data. The repeat while loop doesn't verify it has space to write out data when handling repeats.</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">This was observed to cause memory corruption when using multiple JFFS2 partitions set to use the same compression buffer (which is itself a bug/incorrect configuration).</p>
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<a href="#steps-to-reproduce" aria-hidden="true" class="anchor" id="user-content-steps-to-reproduce" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Steps to reproduce</h2>
<p dir="auto" style="color: #333238; margin: 0;" align="initial">Configure a system with multiple JFFS2 filesystems configured to use the same rtime compression buffer and access them from multiple threads. RAM and flash corruption occur quickly.</p>
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<a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5072">View it on GitLab</a>.
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