linux-kernel - Re: [PATCH] drm/amdgpu: Fix NULL pointer dereference

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Message-ID: <4o2YD5id7zhK5g__CUK3Yf-6Dj459XQ0qsydW6wKHdco3YYtl78BqGUfXvQ9UO0AZoAsMPfhFB0jw1BFldiFDcbZXmGgsobuAoTMWmoDqmE=@emersion.fr>
Date:   Fri, 08 Apr 2022 10:01:32 +0000
From:   Simon Ser <contact@...rsion.fr>
To:     Grigory Vasilyev <h0tc0d3@...il.com>
Cc:     Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Melissa Wen <mwen@...lia.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Michel Dänzer <mdaenzer@...hat.com>,
        Evan Quan <evan.quan@....com>,
        Bas Nieuwenhuizen <bas@...nieuwenhuizen.nl>,
        Sean Paul <seanpaul@...omium.org>,
        Qingqing Zhuo <qingqing.zhuo@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amdgpu: Fix NULL pointer dereference

Is amdgpu_display_get_fb_info ever called with NULL tiling_flags/tmz_surface?
If not, there's no point in adding NULL checks.