trix@xxxxxxxxxx wrote:
> clang static analyzer reports this problem
>
> mac.c:6204:2: warning: Attempt to free released memory
> kfree(ar->mac.sbands[NL80211_BAND_2GHZ].channels);
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> The channels pointer is allocated in ath11k_mac_setup_channels_rates()
> When it fails midway, it cleans up the memory it has already allocated.
> So the error handling needs to skip freeing the memory.
>
> There is a second problem.
> ath11k_mac_setup_channels_rates(), allocates 3 channels. err_free
> misses releasing ar->mac.sbands[NL80211_BAND_6GHZ].channels
>
> Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
> Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
7e8453e35e40 ath11k: fix a double free and a memory leak
--
https://patchwork.kernel.org/patch/11759745/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
