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Date:      Tue, 4 Feb 2020 12:59:10 -0800
From:      bob prohaska <fbsd@www.zefox.net>
To:        Kyle Evans <kevans@freebsd.org>
Cc:        Ralf Wenk <iz-rpi03@hs-karlsruhe.de>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: panic: deadlres_td_sleep_q: possible deadlock detected on RPI3
Message-ID:  <20200204205909.GA47943@www.zefox.net>
In-Reply-To: <CACNAnaFPHyu1e5jUEz=3UCNxqQkCsrvJMoNhFKQJqUq6Khp_7g@mail.gmail.com>
References:  <20200123164419.GA81833@www.zefox.net> <20200125153229.GA3768@www.zefox.net> <E1ivfCl-0073zQ-M1@smtp.hs-karlsruhe.de> <20200126164211.GB7312@www.zefox.net> <20200130162055.GA21879@www.zefox.net> <E1ixVNL-0004Px-Be@iz-wera-new.HS-Karlsruhe.DE> <CACNAnaG=G-KSbd_d-XZtVpx01fC0m9h0n0JbMP2zSjcZWsgw4A@mail.gmail.com> <20200131152343.GA30158@www.zefox.net> <CACNAnaFPHyu1e5jUEz=3UCNxqQkCsrvJMoNhFKQJqUq6Khp_7g@mail.gmail.com>

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I've created a bug report on the deadlock panic,
 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243876

I wonder if it's related to 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242732
The hardware and some symptoms are  different. Both RPI2 
and RPI3 display a "waiting for CAM" message, but I've not
seen my RPI2 panic yet.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243464
reports a freeze on RPI3 and attributes it to r356776.
I wonder of the freeze might have turned into a panic
given enough (~20 mins) time.

Thanks for reading,

bob prohaska






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