zfs kernel panic, known incompatibilities with clang & CPUTYPE/COPTFLAGS?

[Kristof Provost]

On 2013-06-14 23:07:02 (+0200), Alexander Leidinger <Alexander at 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