Re: [uml-devel] gdb debugging problem on uml-2.6.10

["Mei,Jia" <cfs_eric@yahoo.com.cn>]

Blaisorblade wrote:
>>When I try gdb-5.3.90 with uml in vanilla-2.6.10 kernel. I found a problem.
>>
>>When I set a breakpoint somewhere, and after some step, uml will
>>always get a SIGTRAP signal and trap into gdb.
>>
>>Does anyone met the same problem as me? Any known fix for it?
> 
> No, I don't think there is any known fix for it. However, does this problem 
> keep on and makes debugging impossible (i.e., after you "cont", does it keep 
> stopping)?
> 
> Hmm, are you doing debugging in SKAS or in TT mode? In the second case, then 
> it can be a bug in the ptrace proxy (which has a big bug with some gdb 
> releases >= 6.0).
> 
> In the first case, maybe it's something I observed too (I'm not sure because I 
> don't use a lot gdb with UML)... Better, I've observed breakpoints being 
> *skipped* by gdb.

I'm sorry for the late response since away for a few days. It turn out 
to be the rootfs problem, although I don't know why (not related to 
tls), change to a new rootfs fixed it. Maybe don't need to chase more on 
this.
And appreciate you and Jeff's reply.

Eric


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