Date: Tue, 8 Aug 2017 14:56:35 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Hans Petter Selasky <hps@selasky.org> Cc: FreeBSD Net <freebsd-net@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org>, Ben RUBSON <ben.rubson@gmail.com>, hiren <hiren@strugglingcoder.info>, jch <jch@FreeBSD.org> Subject: Re: mlx4en, timer irq @100%... (11.0 stuck on high network load ???) Message-ID: <20170808115635.GY1585@zxy.spb.ru> In-Reply-To: <f006e193-29b6-689a-8957-04d412969ace@selasky.org> References: <2ADA8C57-2C2D-4F97-9F0B-82D53EDDC649@gmail.com> <061cdf72-6285-8239-5380-58d9d19a1ef7@selasky.org> <92BEE83D-498F-47D5-A53C-39DCDC00A0FD@gmail.com> <5d8960d8-e1ff-8719-320f-d3ae84054714@selasky.org> <6B4A35F7-5694-4945-9575-19ADB678F9FA@gmail.com> <297a784a-3d80-b1a6-652e-a78621fe5a8b@selasky.org> <3ECCFBF1-18D9-4E33-8F39-0C366C3BB8B4@gmail.com> <c05c2b1c-b5a8-c39c-6dff-e6cc0d8642bf@selasky.org> <20170808113352.GH18123@zxy.spb.ru> <f006e193-29b6-689a-8957-04d412969ace@selasky.org>
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On Tue, Aug 08, 2017 at 01:49:08PM +0200, Hans Petter Selasky wrote:
> On 08/08/17 13:33, Slawa Olhovchenkov wrote:
> > TW_RUNLOCK(V_tw_lock);
> > and
> > if (INP_INFO_TRY_WLOCK(&V_tcbinfo)) {
> >
> > `inp` can be invalidated, freed and this pointer may be invalid?
>
> If you look one line up there is a pcbref ??
Yes.
Can different thread take this inp and freed it?
May be timer thread?
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