Re: BUG: lock held when returning to user space

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From: Linus Torvalds

Subject: Re: BUG: lock held when returning to user space

Date: Saturday, October 27, 2007 - 9:35 am

On Sat, 27 Oct 2007, Peter Zijlstra wrote:
quoted text> 
> Now I could probably come up with an annotation to hide it, but what do
> other people think, Ingo, Linus, Andrew, do we want to keep kernel locks
> held over userspace?

Definitely not a sane thing to do. It should use ref-counting and/or a 
single bit to say "busy". 

			Linus
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Messages in current thread:

BUG: lock held when returning to user space, Gabriel C, (Sat Oct 27, 7:19 am)

Re: BUG: lock held when returning to user space, Jiri Kosina, (Sat Oct 27, 8:12 am)

Re: BUG: lock held when returning to user space, Peter Zijlstra, (Sat Oct 27, 8:28 am)

Re: BUG: lock held when returning to user space, Andrew Morton, (Sat Oct 27, 8:46 am)

Re: BUG: lock held when returning to user space, Arjan van de Ven, (Sat Oct 27, 8:47 am)

Re: BUG: lock held when returning to user space, Peter Zijlstra, (Sat Oct 27, 9:09 am)

Re: BUG: lock held when returning to user space, Linus Torvalds, (Sat Oct 27, 9:35 am)

Re: BUG: lock held when returning to user space, Arjan van de Ven, (Sat Oct 27, 10:05 am)

Re: BUG: lock held when returning to user space, Jiri Kosina, (Sat Oct 27, 3:47 pm)

Re: BUG: lock held when returning to user space, Jiri Kosina, (Sun Oct 28, 4:12 am)

Re: [rtc-linux] Re: BUG: lock held when returning to user ..., Alessandro Zummo, (Mon Oct 29, 5:20 am)

Re: BUG: lock held when returning to user space, Alessandro Zummo, (Mon Oct 29, 5:20 am)


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