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Panic! UNIX® System Crash Dump Analysis by Kimberley Brown, Chris Drake

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Chapter 30. Network Troubles

For this example, we’ve got a system that panic’ed several times with essentially the same error: a bad pointer. The trace information indicated that it was a problem in the networking code in the kernel. It’s an easy one to solve (or at least fix), because in this case a patch for the problem was readily available.

We’ll go through the analysis procedures, take a short detour to verify that the problem was real, and look for a solution in the SunSolve bug and patch databases.

Initial analysis

This system was a fairly new SPARCstation 5, running SunOS 4.1.3_U1. (We’ll verify that, leaving nothing to chance.) This means we need to analyze the crash on a comparable system: a sun4m architecture, running the same version ...

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