[Bug 1001724] New: Thread stack overrun when high interrupt rate

[Bug 1001724] New: Thread stack overrun when high interrupt rate

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           Summary: Thread stack overrun when high interrupt rate
           Product: eCos
           Version: 3.0
          Platform: All
        OS/Version: Cortex-M
            Status: UNCONFIRMED
          Severity: major
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: ml@tctechnologies.tc
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=2024)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=2024)
Description of bug and potential fix.

Interrupts can result in excessive (unbound) thread stack usage.

In certain cases an unbounded amount of stack is required for the threads to
handle DSR processing. That is not feasible and must be fixed.

The problem is described in the attached document.

We do have a patch fixing this which has been tested. It does solve the problem
with no side effects found so far.

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[Bug 1001724] New: Thread stack overrun when high interrupt rate

[bugzilla-daemon]

Please do not reply to this email. Use the web interface provided at:
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001724

           Summary: Thread stack overrun when high interrupt rate
           Product: eCos
           Version: 3.0
          Platform: All
        OS/Version: Cortex-M
            Status: UNCONFIRMED
          Severity: major
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: ml@tctechnologies.tc
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=2024)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=2024)
Description of bug and potential fix.

Interrupts can result in excessive (unbound) thread stack usage.

In certain cases an unbounded amount of stack is required for the threads to
handle DSR processing. That is not feasible and must be fixed.

The problem is described in the attached document.

We do have a patch fixing this which has been tested. It does solve the problem
with no side effects found so far.

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