Re: [uml-devel] Programs in guest segfault, amd64 host and guest

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try exporting LD_ASSUME_KERNEL=2.4.1 before executing Your application, 
to see if that works - this disables usage of NPTL
Jan Dittmer wrote:
> Jeff Dike wrote:
>   
>> On Wed, Oct 18, 2006 at 05:33:50PM +0200, Jan Dittmer wrote:
>>     
>>> clone(Process 484 attached
>>> child_stack=0x4244e280, 
>>> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID|CLONE_DETACHED, 
>>> parent_tidptr=0x4244e9f0, tls=0x4244e960, child_tidptr=0x4244e9f0) = 484
>>> [pid   483] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
>>> [pid   484] --- SIGSEGV (Segmentation fault) @ 0 (0) ---
>>> Process 484 detached
>>> <... rt_sigprocmask resumed> NULL, 8)   = 0
>>> +++ killed by SIGSEGV +++
>>>       
>> I suspect it's due to UML/x86_64 having incomplete NPTL support,
>> although I've had almost no problems with up-to-date Fedora
>> filesystems on x86_64.  The one thing I do see is yum segfaulting
>> occassionally, but I haven't been able to tie that to NPTL.
>>     
>
> This is 100% reproducible here. Perfect test case. How to debug?
>
> Jan
>
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