Re: Fix OOPS in crash_kernel_shrink

[Cong Wang]

Vitaly Mayatskikh wrote:
> At Tue, 20 Apr 2010 20:56:14 +0800, Cong Wang wrote:
> > Vitaly Mayatskikh wrote:
> > > Two "echo 0 > /sys/kernel/kexec_crash_size" OOPSes kernel. Also
> > > content of this file is invalid after first shrink to zero: it shows 1
> > > instead of 0.
> > >
> > > This patch fixes it.
> > Hmmm, I certainly did tests for 'echo 0 > kexec_crash_size' when I
> > worked on this, but I didn't get any oops. Can you show me the full
> > oops?
>
> Do it twice. start == end condition will work over and over, and
> kernel will try to release_resource() again (and that's causes OOPS).

Hmm, I see. ACK to your patch.

Thanks much!

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