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Date:      Mon, 24 Jun 2013 12:15:18 +0200
From:      Kristof Provost <kristof@sigsegv.be>
To:        Alexander Leidinger <Alexander@Leidinger.net>
Cc:        Dimitry Andric <dim@freebsd.org>, current@freebsd.org
Subject:   Re: zfs kernel panic, known incompatibilities with clang & CPUTYPE/COPTFLAGS?
Message-ID:  <20130624101517.GA9630@thebe.jupiter.sigsegv.be>
In-Reply-To: <20130614230702.00006aa0@unknown>
References:  <20130612223024.00003980@unknown> <E9E313A1-AEA5-4926-86A2-6CEF0E7EB388@freebsd.org> <20130614230702.00006aa0@unknown>

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On 2013-06-14 23:07:02 (+0200), Alexander Leidinger <Alexander@Leidinger.net> wrote:
> The bt in the minidump is useless, but I made a bt directly
> in the kernel debugger:
> ---snip---
> Fatal trap 12: page fault while in kernel mode
> cpuid = 2; apic id = 02
> fault virtual address   = 0x0
> fault code              = supervisor read instruction, page not present
> instruction pointer     = 0x20:0x0
> stack pointer           = 0x28:0xffffff839e79d930
> frame pointer           = 0x28:0xffffff839e79d9e0
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 2183 (zfs)
> 
> db> bt
> Tracing pid 2356
> uart_sab82532_class() at 0
> devfs_ioctl_f() at devfs_ioctl_f+0xf0
> kern_ioctl() at kern_ioctl+0x1d7
> sys_ioctl() at sys_ioctl+0x142
> ---snip---
> 
For what it's worth, I'm running into exactly the same problem. (amd64,
stable/9). I have no custom settings in /etc/make.conf or /etc/src.conf

Regards,
Kristof



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