Re: [regression, 2.6.37-rc1] 'ip link tap0 up' stuck in do_exit()

[Eric Dumazet]

Le jeudi 09 dÃcembre 2010 Ã 18:07 +0100, Eric Dumazet a Ãcrit :
> Le vendredi 10 dÃcembre 2010 Ã 00:47 +0800, AmÃrico Wang a Ãcrit :
> 
> > Yeah, there is no point that a zombie can trigger a BUG_ON in kenrel.
> > But it is still interesting to know why it becomes a zombie...
> > 
> 
> A zombie is very easy to get.
> 
> Technically speaking, all processes die and become zombies, unless
> parent said : signal(SIGCLD, SIG_IGN) before fork()
> 
> The parent is buggy (sudo in this case ?) and doesnt call wait() to
> 'free' one of its children.
> 
> 

Before you ask :)

If the parent dies before the child, task is re-parented to init.

Then, with namespaces, I dont know what happens (is there one init per
namespace ?)




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