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Subject: Re: coredump when loading cxgb after boot with routing daemon already
 running (RELENG11)
To: Navdeep Parhar <nparhar@gmail.com>, Mike Tancsa <mike@sentex.net>
References: <b2aa73a9-63b5-36c6-f8fa-a5a17f9f3073@sentex.net>
 <CAPFoGT_24WC6UNyoiCmDOJqzMGJ=rn=CiMczFi=+QBA8-uBcaw@mail.gmail.com>
Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>,
 Gleb Smirnoff <glebius@freebsd.org>
From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
Message-ID: <5cefdc60-2131-1eab-32fe-74212c93cc59@yandex.ru>
Date: Sun, 8 Jan 2017 16:22:33 +0300
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On 04.01.2017 22:07, Navdeep Parhar wrote:
> What source line in releng-11 does ifioctl+0x6dd correspond to?
>
> (kgdb) l *(ifioctl+0x6dd)
>
> This might be race where the ifnet is being created or coming up and
> zebra pokes it in some way before it's fully ready.  If that's the
> case it could affect any ifnet.

Hi,

from a quick look, it seems that ifnet becomes available for any actions 
just after if_alloc() and any strange things can happen in a window 
after if_alloc() and before if_attach(). Am I right?

-- 
WBR, Andrey V. Elsukov