Re: Remove easily user-triggerable BUG from generic_setlease

[Dave Jones]

On Fri, Jul 13, 2012 at 10:47:43AM -0700, Linus Torvalds wrote:
 > On Fri, Jul 13, 2012 at 10:35 AM, Dave Jones <davej@xxxxxxxxxx> wrote:
 > > This can be trivially triggered from userspace by passing in something unexpected.
 > 
 > Argh. It looks like it would be harmless (apart from the noise),
 > except we hold file_lock_lock. Which turns the BUG_ON() into not just
 > "noise and kill the process", but "noise and kill the process and
 > leave a nasty lock held".

Yeah, box wedged shortly afterwards. Not cool.

 > This seems to go back to 3.2, so stable should be cc'd, no?

yeah, definitly. my bad.

	Dave

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