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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: a063b650ce ("ath: dfs_pattern_detector: Avoid open coded arithmetic in memory allocation")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/ad8c55b97ee4b330cb053ce2c448123c309cc91c.1695538105.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe JAILLET 2023-09-30 07:54:47 +03:00 committed by Greg Kroah-Hartman
parent ebca9ae926
commit 586ce1064f
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/dfs_pattern_detector.c
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@ -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;