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File writing during bugcheck callback routine

OSR_Community_UserOSR_Community_User Member Posts: 110,217
Does anyone know if it is possible to write to a file while in a bugcheck
callback routine? In the callback routine, the IRQL is HIGH_LEVEL, and
interrupts are disabled, so standard file writing techniques (such as
ZwWriteFile) will not work. Alternatively, does anyone know of an alternate
approach to saving data (say 1-4 K in size) when a bugcheck occurs, similar
to NT's memory dumps?

Comments

  • OSR_Community_UserOSR_Community_User Member Posts: 110,217
    > Does anyone know if it is possible to write to a file while
    > in a bugcheck
    > callback routine? In the callback routine, the IRQL is
    > HIGH_LEVEL, and
    > interrupts are disabled, so standard file writing techniques (such as
    > ZwWriteFile) will not work. Alternatively, does anyone know
    > of an alternate
    > approach to saving data (say 1-4 K in size) when a bugcheck
    > occurs, similar
    > to NT's memory dumps?

    System Internals (http://www.sysinternals.com) has a utility that does this
    which works well. As far as writing your own, it's pretty tricky for the
    reasons you state.
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