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SubjectRe: processes hung after sys_renameat, and 'missing' processes
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On Mon, 2012-06-04 at 01:20 +0100, Al Viro wrote:
>
> Another question re lockdep - does it scream loudly if process returns
> to userland without having released some lock? I hope so, but I've never
> checked that... ;-/

It does, on some archs. git grep lockdep_sys_exit, suggests x86 and
s390.

http://www.google.com/search?q=lock+held+when+returning+to+user+space

will find you people who tripped it ;-) There's a few filesystems that
did various vile things on freeze or so.


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