powerpc/pseries/dlpar: Eliminate use after free

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dlpar_free_cc_nodes frees its argument, so dlpar_online_cpu should not be
called on the same value.  Skip over the call to dlpar_online_cpu by
jumping directly to out.

A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E,E2;
@@

dlpar_free_cc_nodes(E)
...
(
  E = E2
|
* E
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

...

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Julia Lawall 2010-04-02 02:47:13 +00:00 • committed by Benjamin Herrenschmidt

parent ab30f78c0a

commit a7df5c5e52

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arch/powerpc/platforms/pseries/dlpar.c

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