kern/145024: [linux] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32

[Chagin Dmitry]

On Sun, Jan 30, 2011 at 06:27:53PM +0000, arundel at freebsd.org wrote:
> Old Synopsis: [linux] [panic] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32
> New Synopsis: [linux] kernel crash by linux.ko module with nooptions COMPAT_FREEBSD32
> 
> State-Changed-From-To: open->analyzed
> State-Changed-By: arundel
> State-Changed-When: Sun Jan 30 18:13:13 UTC 2011
> State-Changed-Why: 
> We have two possibilities in order to fix this issue:
> 
> 1) Add something like the following somewhere in sys/amd/linux32:
> 
>    #ifndef COMPAT_FREEBSD32
>    #error "linux emulation requires COMPAT_FREEBSD32 \
> 	   option for non 32 bit architectures"
>    #endif
> 
> 2) Find a way to avoid the freebsd32_exec_copyin_args() call in
>    linux32_machdep.c. I believe this is the only place in the sys/amd/linux32
>    code that depends on sys/amd64/ia32 code.
> 
> NB: I've removed the panic tag from this PR. I was able to reproduce the issue,
>     however a panic didn't occur. The problem is that
>     freebsd32_exec_copyin_args() wasn't compiled into the kernel and loading the
>     linux kernel module thus fails.
> 

hi, close report, see r205014.

-- 
Have fun!
chd
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