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drm/amd/display: Fix bounds check for dcn35 DcfClocks
commit2f10d4a51b
upstream. [Why] NumFclkLevelsEnabled is used for DcfClocks bounds check instead of designated NumDcfClkLevelsEnabled. That can cause array index out-of-bounds access. [How] Use designated variable for dcn35 DcfClocks bounds check. Fixes:a8edc9cc0b
("drm/amd/display: Fix array-index-out-of-bounds in dcn35_clkmgr") Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Reviewed-by: Sun peng Li <sunpeng.li@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -705,7 +705,7 @@ static void dcn35_clk_mgr_helper_populate_bw_params(struct clk_mgr_internal *clk
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clock_table->NumFclkLevelsEnabled;
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max_fclk = find_max_clk_value(clock_table->FclkClocks_Freq, num_fclk);
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num_dcfclk = (clock_table->NumFclkLevelsEnabled > NUM_DCFCLK_DPM_LEVELS) ? NUM_DCFCLK_DPM_LEVELS :
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num_dcfclk = (clock_table->NumDcfClkLevelsEnabled > NUM_DCFCLK_DPM_LEVELS) ? NUM_DCFCLK_DPM_LEVELS :
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clock_table->NumDcfClkLevelsEnabled;
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for (i = 0; i < num_dcfclk; i++) {
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int j;
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