r247095 Boot Failure

O. Hartmann ohartman at zedat.fu-berlin.de
Thu Feb 21 19:45:34 UTC 2013

Am 02/21/13 16:28, schrieb Shawn Webb:
> I'm on r247095. My box is failing to boot on a Dell Precision T7500. I'm
> running ZFS as root with a mirrored root pool.
> Here's a pic of the box failing:
> https://lh5.googleusercontent.com/-Lq_jlX8of0o/USY4cqZ5BOI/AAAAAAAAGoI/Nd1LGPbFjHc/s1112/IMG_20130221_100723.jpg
> There isn't much useful information in the pic. No crash dump is generated.
> Where do I go from here?
> I can boot into kernel.old and that works as a workaround for now.
> Thanks,
> Shawn

Well, I guess you faced the same problem I reported in two days ago. I
have this crash on ALL(!) of my FreeBSD 10.0-CURRENT boxes, which use
CLANG as the default compiler as well as setting CXXFLAGS+=
CXXFLAGS+=              -std=c++1

The working kernel on those boxes is

FreeBSD 10.0-CURRENT #0 r246949: Mon Feb 18 22:20:30 CET 2013/amd64

On our Intel Core2Duo (Q6600/E8400) boxes the crash looks like yours in
the picture, but sometimes there is "trap 18" or "trap 16" instead of
the cryptic signs.

On a more modern Ivy-Bridge i3-3220, I get blinking, funky funny clock
characters on the screen - this box uitilizes as a server the Intel iGPU
of the CPU.

Since I use customized kernels, I tried to start with the official
GENERIC kernel and disabling every setting in /boot/loader.conf, but the
result is even with such a setting the same - all boxes crashes with the
kernel sources >  r246949.

I also tried to enable the debugging features in the customized kernel
(as they are enabled in the GENERIC), but there is no chance to get any
backtrace, the kernel simply gets stuck or - on the mentioned box with
the ivy Bridge, simply blinking funnily as a home computer in the late 80s.

Sorry for being unable to report more substantial facts on that.


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