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[ Upstream commit79bd60ee87] 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>