Acked-by: Manish Ahuja <[email protected]>

Tony Breeds wrote:
> print_dump_header() will be called at least once with a NULL pointer in
> a normal boot sequence.  if DEBUG is defined then we will get a deref,
> add a quick fix to exit early in the NULL pointer case.
> 
> Signed-off-by: Tony Breeds <[email protected]>
> ---
>  arch/powerpc/platforms/pseries/phyp_dump.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/pseries/phyp_dump.c 
> b/arch/powerpc/platforms/pseries/phyp_dump.c
> index edbc012..16e659a 100644
> --- a/arch/powerpc/platforms/pseries/phyp_dump.c
> +++ b/arch/powerpc/platforms/pseries/phyp_dump.c
> @@ -130,6 +130,9 @@ static unsigned long init_dump_header(struct 
> phyp_dump_header *ph)
>  static void print_dump_header(const struct phyp_dump_header *ph)
>  {
>  #ifdef DEBUG
> +     if (ph == NULL)
> +             return;
> +
>       printk(KERN_INFO "dump header:\n");
>       /* setup some ph->sections required */
>       printk(KERN_INFO "version = %d\n", ph->version);


-- 

--
Manish Ahuja
Linux RAS Engineer.
IBM Linux Technology Center
[email protected]
512-838-1928, t/l 678-1928.

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