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Commit a3fdf902 authored by Mahadevan's avatar Mahadevan
Browse files

disp: msm: sde: add check to fix null pointer dereference 



In pstate_cmp the plane_state structures are accessed
without checking it is allocated or not, which leads to
null pointer dereference. To fix it NULL check is added.

Change-Id: I5982138b396b70979205d87bc9aa260d9501fee0
Signed-off-by: default avatarMahadevan <mahap@codeaurora.org>
parent 987888e6

msm/sde/sde_crtc.c

+3 −0
Original line number Diff line number Diff line
@@ -1193,6 +1193,9 @@ static int pstate_cmp(const void *a, const void *b) 
	int pa_zpos, pb_zpos;

	enum sde_layout pa_layout, pb_layout;



	if ((!pa || !pa->sde_pstate) || (!pb || !pb->sde_pstate))

		return rc;



	pa_zpos = sde_plane_get_property(pa->sde_pstate, PLANE_PROP_ZPOS);

	pb_zpos = sde_plane_get_property(pb->sde_pstate, PLANE_PROP_ZPOS);