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drm/amd/display: Check null pointer before dereferencing se

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BugLink: https://bugs.launchpad.net/bugs/2097301

[ Upstream commit ff599ef6970ee000fa5bc38d02fa5ff5f3fc7575 ]

[WHAT & HOW]
se is null checked previously in the same function, indicating
it might be null; therefore, it must be checked when used again.

This fixes 1 FORWARD_NULL issue reported by Coverity.

Acked-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
CVE-2024-50049
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
This commit is contained in:
Alex Hung
2024-08-29 17:30:26 -06:00
committed by Mehmet Basaran
parent 05eb4aaf90
commit 8a9307b47d
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/display/dc/core/dc.c
+1 -1
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@@ -1786,7 +1786,7 @@ bool dc_validate_boot_timing(const struct dc *dc,
if (crtc_timing->pix_clk_100hz != pix_clk_100hz)
return false;
if (!se->funcs->dp_get_pixel_format)
if (!se || !se->funcs->dp_get_pixel_format)
return false;
if (!se->funcs->dp_get_pixel_format(