Re: [PATCH 4.4 05/16] drm: NULL pointer dereference [null-pointer-deref] (CWE 476) problem

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On Thu, Apr 23, 2020 at 09:40:03PM +0100, Lee Jones wrote:
> From: Joe Moriarty <joe.moriarty@xxxxxxxxxx>
> 
> [ Upstream commit 22a07038c0eaf4d1315a493ce66dcd255accba19 ]
> 
> The Parfait (version 2.1.0) static code analysis tool found the
> following NULL pointer derefernce problem.
> 
> - drivers/gpu/drm/drm_dp_mst_topology.c
> The call to drm_dp_calculate_rad() in function drm_dp_port_setup_pdt()
> could result in a NULL pointer being returned to port->mstb due to a
> failure to allocate memory for port->mstb.
> 
> Signed-off-by: Joe Moriarty <joe.moriarty@xxxxxxxxxx>
> Reviewed-by: Steven Sistare <steven.sistare@xxxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Link: https://patchwork.freedesktop.org/patch/msgid/20180212195144.98323-3-joe.moriarty@xxxxxxxxxx
> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/drm_dp_mst_topology.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

Already in the 4.4.220 release.



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