How to take down a system to the point of requiring a newfs with one line of C (userland)

Volker volker at vwsoft.com
Mon Feb 18 10:22:24 PST 2008


On 02/18/08 19:04, Wesley Shields wrote:
> On Mon, Feb 18, 2008 at 09:25:29AM -0800, Peter Sanchez wrote:
>> On Feb 18, 2008, at 7:07 AM, Wesley Shields wrote:
>>> I tried this using /tmp/ as argv[1] and it didn't crash a 6.2 machine or
>>> a -current from a few weeks ago.  Maybe the number of files has to be
>>> increased?  I bumped it up to 100000 and tried on a 6.2 machine, but I
>>> ran out of inodes before I could induce a crash.  :)
>>>
>>> Maybe I'm doing something wrong?
>> I believe the panic doesn't occur until boot. Did you reboot the box after 
>> writing the files to /tmp?
>>
>> Peter
> 
> I did on a 6.2 machine with 10000 files in /tmp.  I can reboot the
> -current machine later tonight if you think it will make a difference.

According to the problem report, it should panic while mounting the fs.
umount and re-mount /tmp and see, if you can make it panic (a reboot
shouldn't be necessary here).

If you're able to do so, please send in a complete panic message and
backtrace - if possible, please!



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