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DragonFly bugs List (threaded) for 2005-04
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Re: kernel panic w/ ALTQ and SMP

From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Sun, 3 Apr 2005 14:28:48 -0700 (PDT)

:hi folks,
:I wanted to try ATLQ + pf and got a nice (reproduceable) kernel panic
:after running
:root$ pfctl -F queue -v
:altq cleared (or smth like that)
:BANG! panic + dump
:here's a bt from gdb:
:Previous frame inner to this frame (corrupt stack?)
:(gdb) quit

    More like corrupt gdb :-(.  The new gdb has problems backtracing
    stack frames.  The kernel stack itself is probably just fine.

    Could you get the kernel and vmcore up somewhere where we can get
    it so we can track it down directly?  pfil_run_hooks() has conditionals
    to check for function calls through NULL so the actual crash must have
    occured in a deeper procedure that gdb munged the backtrace for.

    If security is an issue on the machine just send me a private email
    with the fetch location.

					Matthew Dillon 

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