Re: [PATCH] arch: tile: fix null pointer dereference on pt_regs pointer

[Chris Metcalf <cmetcalf@ezchip.com>]

On 3/1/2015 3:12 PM, Colin King wrote:
> From: Colin Ian King<colin.king@canonical.com>
>
> Cppcheck reports the following issue:
> [arch/tile/kernel/stack.c:116]: (error) Possible null
>    pointer dereference: p
>
> In this case, on reporting on an odd fault, p is set to NULL
> and immediately afterwords p is dereferenced iff
> !kbt->profile is false.  Rather than doing this check just
> return NULL rather than falling through to the potential
> null pointer dereference (since the original intentional
> outcome would be to return NULL anyhow) for this odd fault
> case.
>
> Signed-off-by: Colin Ian King<colin.king@canonical.com>
> ---
>   arch/tile/kernel/stack.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Thanks!  I tweaked this a bit and took it into the tile tree.

-- 
Chris Metcalf, EZChip Semiconductor
http://www.ezchip.com