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Date:      Fri, 7 Apr 2017 09:41:54 -0500
From:      Eric van Gyzen <eric@vangyzen.net>
To:        Tommi Pernila <tommi.pernila@gmail.com>, FreeBSD Stable <freebsd-stable@freebsd.org>, Tomasz CEDRO <tomek@cedro.info>, freebsd-hardware@freebsd.org, freebsd-wireless@freebsd.org
Subject:   Re: if_iwm crashes kernel when loaded from /boot/loader.conf
Message-ID:  <32c78973-2b73-3433-e30a-fb814af68eab@vangyzen.net>
In-Reply-To: <CABHD1wQPGT5TT8wSApTkePxtgkCo81ZmgTzLPCLVR=4zJvTNNg@mail.gmail.com>
References:  <CAFYkXjmpwHMzYv6FBDvY3yzKj5swg-aCWy0htQozQ-wp=tZdQA@mail.gmail.com> <CAFYkXjnugPW8yEVzsBWJ2XP9BsQm869ygikair4%2Bi_x41QhgGw@mail.gmail.com> <CAFYkXjm6cjXg2hEVi=7h4xM-Z%2B=92kJ98himwjnG9gCzmW6DqA@mail.gmail.com> <CAFYkXjnxBmXNHuhm-QGVKdOSH8_ctK29Rkh-y6tE40A_JC8Tng@mail.gmail.com> <CAFYkXjkzCobuOyKSL%2BXFkG_WxWoksqYwWwuP-4VJK8OgVmD_EA@mail.gmail.com> <CAFYkXj=N84ASjZoF8gzM8rAgLgqFE2iTVVUDAjyRrcfrVV9u%2Bw@mail.gmail.com> <CAFYkXjmWUVAhR=tuteftxuXE=tuZCHM6gMJAmMPONJGpEu6Gtg@mail.gmail.com> <CAFYkXjmOLZhsQWtZD0VdJqcpftMgcgb8rztQ1KiTw7y6PXy8LA@mail.gmail.com> <CAFYkXjm7Z=VoKgkrsSfubK1kUMk_3WjgrDbk8tGM=4bKMotbKA@mail.gmail.com> <CAFYkXj=o3=Qa58gTvBARBEsKoJca=gt%2BTkayYPK8B4vJiZwJKg@mail.gmail.com> <CABHD1wQPGT5TT8wSApTkePxtgkCo81ZmgTzLPCLVR=4zJvTNNg@mail.gmail.com>

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On 04/07/2017 09:38, Tommi Pernila wrote:
> On Fri, 7 Apr 2017 at 16.27, Tomasz CEDRO <tomek@cedro.info> wrote:
> 
>> Hello,
>>
>> I noticed a problem when loading if_iwm from /boot/loader.conf kernel
>> crashes as it cannot load module firmware dead loop occurs. Adding
>> iwm8000Cfw before if_iwm does not help.
>>
>> Loading if_iwm on a running system works fine and gives operational wifi.
>>
>> Intel Corporation Wireless 8260 class=0x028000 card=0x10108086
>> chip=0x24f38086 rev=0x3a hdr=0x00
>>
>> --
>> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
> 
> 
> This has been happening to my Intel 8260 as well.
> It seems to be a known bug.
> 
> I circumvent it by manually loading the wifi modules after boot. This
> doesn't crash the system.
> 
> As a dirty hack? You could add the loading as a script and automatically
> load the modules when the FreeBSD is fully up and running.

$ grep kld_list /etc/defaults/rc.conf
#kld_list="" 		# Kernel modules to load after local disks are mounted

Eric



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