svn commit: r346150 - head/sys/vm

[Tycho Nightingale]

> On Apr 12, 2019, at 12:43 PM, Enji Cooper <yaneurabeya at gmail.com> wrote:
> 
> 
>> On Apr 12, 2019, at 5:46 AM, Tycho Nightingale <tychon at FreeBSD.org> wrote:
>> 
>> Author: tychon
>> Date: Fri Apr 12 12:46:25 2019
>> New Revision: 346150
>> URL: https://svnweb.freebsd.org/changeset/base/346150
>> 
>> Log:
>> for a cache-only zone the destructor tries to destroy a non-existent keg
>> 
>> Reviewed by:	markj
>> Sponsored by:	Dell EMC Isilon
>> Differential Revision:	https://reviews.freebsd.org/D19835
> 
> 
> Hi Tycho!
> 	Is the goal of this change to prevent a panic (with an INVARIANTS kernel)?
> Thank you!
> -Enji

Hi,

The goal of this change is to fix a regression introduced in r343026.  It does cause a panic independent of INVARIANTS.  Fortunately there isn’t currently any in-tree code which triggers the panic.  It does however show up when running with the patch under review in D19845.

Tycho