Patch "ASoC: Intel: avs: Fix potential integer overflow" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    ASoC: Intel: avs: Fix potential integer overflow

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-intel-avs-fix-potential-integer-overflow.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit a4c4e07617039d35dca8e4b33804ec5f0e7800b9
Author: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
Date:   Fri Apr 5 11:09:23 2024 +0200

    ASoC: Intel: avs: Fix potential integer overflow
    
    [ Upstream commit c7e832cabe635df47c2bf6df7801e97bf3045b1e ]
    
    While stream_tag for CLDMA on SKL-based platforms is always 1, function
    hda_cldma_setup() uses AZX_SD_CTL_STRM() macro which does:
            stream_tag << 20
    
    what combined with stream_tag type of 'unsigned int' generates a
    potential overflow issue. Update the field type to fix that.
    
    Fixes: 45864e49a05a ("ASoC: Intel: avs: Implement CLDMA transfer")
    Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
    Link: https://msgid.link/r/20240405090929.1184068-8-cezary.rojewski@xxxxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/sound/soc/intel/avs/cldma.c b/sound/soc/intel/avs/cldma.c
index d7a9390b5e483..585579840b646 100644
--- a/sound/soc/intel/avs/cldma.c
+++ b/sound/soc/intel/avs/cldma.c
@@ -35,7 +35,7 @@ struct hda_cldma {
 
 	unsigned int buffer_size;
 	unsigned int num_periods;
-	unsigned int stream_tag;
+	unsigned char stream_tag;
 	void __iomem *sd_addr;
 
 	struct snd_dma_buffer dmab_data;




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