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Date:      Fri, 13 Nov 2015 16:20:45 -0500
From:      Randall Stewart <rrs@netflix.com>
To:        Bryan Drewery <bdrewery@FreeBSD.org>
Cc:        "Alexander V. Chernikov" <melifaro@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Adrian Chadd <adrian@freebsd.org>, imp@freebsd.org
Subject:   Re: svn commit: r290664 - in head: share/man/man9 sys/kern sys/sys
Message-ID:  <4A4A2115-6392-487A-BEBE-499A68689D4A@netflix.com>
In-Reply-To: <56465003.8070709@FreeBSD.org>
References:  <201511101449.tAAEnXIi065747@repo.freebsd.org> <1660421447413365@web19h.yandex.ru> <56464A90.2040405@FreeBSD.org> <56464CBA.7060206@FreeBSD.org> <CCAE1243-3DC1-4077-BC55-AA6EA7750181@netflix.com> <56465003.8070709@FreeBSD.org>

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No alexander=92s panic=92s are because the
LLREF
is done if (callout_stop())

But now if it was not running -1 is returned..

Try the patch I just sent..

R
On Nov 13, 2015, at 4:02 PM, Bryan Drewery <bdrewery@FreeBSD.org> wrote:

> On 11/13/2015 1:00 PM, Randall Stewart wrote:
>> Bryan:
>>=20
>> This looks like a decent thing to do..
>>=20
>> Still wondering why changing the callout.h header file would not have =
caused
>> things to recompile to pick up the new argument..
>>=20
>> We can do it this way though it looks fine.
>>=20
>> You want to commit it or I?
>=20
> Well your change is totally safe for compiling. It's just not KBI
> backwards compat for older modules. This is not typically a problem =
but
> I think in this case it is worth doing to avoid random data coming =
into
> the 'drain' argument if loading an older module.
>=20
> I'll do a test build and commit it. Perhaps this is what was leading =
to
> Alexander's panics.
>=20
> I haven't analyzed the return value issue at all.
>=20
>=20
> --=20
> Regards,
> Bryan Drewery
>=20

--------
Randall Stewart
rrs@netflix.com
803-317-4952








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