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svn-src-head@freebsd.org; Dexuan Cui
Subject: Re: svn commit: r328554 - head/sys/cam/scsi
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I think this is a good idea to MFC. We've had no reports of it causing
issues.
There's more extensive locking changes / tweaks needed for da that just
went in that likely should also be MFC'd.
Warner
On Sun, Mar 11, 2018 at 9:17 PM, Dexuan-BSD Cui
wrote:
> Hi imp and all,
> I think this patch
Hi imp and all,
I think this patch is very important, because it can fix a panic I
noticed recently when I try to hot-remove a SCSI disk from a VM
running on Azure/Hyper-V.
The panic is almost 100% reproducible with stable/11, but not in the
latest CURRENT code, so finally I identified this fix in
Author: imp
Date: Mon Jan 29 18:07:14 2018
New Revision: 328554
URL: https://svnweb.freebsd.org/changeset/base/328554
Log:
Do the book-keeping on release before we release the reference. The
periph was going away on final release, and then returning and we
started dancing in free memory.