Hi Konstantin,

On 2015-08-23 15:54 +0300, Konstantin Belousov <kostik...@gmail.com>
wrote:
>After looking at your data closely, I think you are right.  The panic
>occurs when the exit1(9) does KNOTE_LOCKED(NOTE_EXIT).  This is the
>only case in the tree where filter uses knlist_remove_inevent() to
>detach processed note, so indeed the slist is modified under the
>iterator.
>
>Below is the patch with the suggested change and unrelated cleanup of
>the uma(9) KPI use.  Please test, everybody who has a panic with the
>backtrace pointing to the sys_exit().

This patch fixes issue for me. Thank you.

-- 
pozdrawiam / with regards
Paweł Pękala
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