This is a note to let you know that I've just added the patch titled
wifi: ath: dfs_pattern_detector: Fix a memory initialization issue
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:
wifi-ath-dfs_pattern_detector-fix-a-memory-initializ.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 3e994bc19a5acee5425b5dea1fc5b785bb3e071d
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date: Sat Sep 30 07:54:47 2023 +0300
wifi: ath: dfs_pattern_detector: Fix a memory initialization issue
[ Upstream commit 79bd60ee87e1136718a686d6617ced5de88ee350 ]
If an error occurs and channel_detector_exit() is called, it relies on
entries of the 'detectors' array to be NULL.
Otherwise, it may access to un-initialized memory.
Fix it and initialize the memory, as what was done before the commit in
Fixes.
Fixes: a063b650ce5d ("ath: dfs_pattern_detector: Avoid open coded arithmetic in memory allocation")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Reviewed-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/ad8c55b97ee4b330cb053ce2c448123c309cc91c.1695538105.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.c b/drivers/net/wireless/ath/dfs_pattern_detector.c
index 27f4d74a41c80..2788a1b06c17c 100644
--- a/drivers/net/wireless/ath/dfs_pattern_detector.c
+++ b/drivers/net/wireless/ath/dfs_pattern_detector.c
@@ -206,7 +206,7 @@ channel_detector_create(struct dfs_pattern_detector *dpd, u16 freq)
INIT_LIST_HEAD(&cd->head);
cd->freq = freq;
- cd->detectors = kmalloc_array(dpd->num_radar_types,
+ cd->detectors = kcalloc(dpd->num_radar_types,
sizeof(*cd->detectors), GFP_ATOMIC);
if (cd->detectors == NULL)
goto fail;
