reproduceable kernel panic when trying to use tap0 interface (sparc64)

Michael Ortmann mortmann at
Tue May 30 06:53:01 PDT 2006

Robert Watson schrieb:

> This sounds like a kernel code alignment bug, which is likely easy to 
> fix. However...

the bug has been fixed (fast!):

>> == how to reproduce the kernel panic ==
>> # cat /dev/zero >/dev/tap0
>> tap0: Ethernet address: 00:bd:00:02:10:00
>> panic: trap: memory address not aligned
>> cpuid = 0
>> KDB: enter: panic
>> [thread 449 tid 100044]
>> Stopped at kdb_enter+0x3c: ta %xcc, 1
> Whoops, the gdb stack trace below looks corrupted and/or wrong.  Could 
> you instead provide the output of the "trace" command in DDB?  DDB 
> traces can be more reliable under some circumstances, and more resistant 
> to mistakes such as matching the wrong kernel to the wrong core, gdb 
> bugs, and so on.

ill keep it in mind for the next time, thanks.

Michael Ortmann

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