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Re: [PATCH v4] wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function

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Fedor Pchelkin <pchelkin@xxxxxxxxx> writes:

> It is stated that ath9k_htc_rx_msg() either frees the provided skb or
> passes its management to another callback function. However, the skb is
> not freed in case there is no another callback function, and Syzkaller was
> able to cause a memory leak. Also minor comment fix.
>
> Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
>
> Fixes: fb9987d0f748 ("ath9k_htc: Support for AR9271 chipset.")
> Reported-by: syzbot+e008dccab31bd3647609@xxxxxxxxxxxxxxxxxxxxxxxxx
> Reported-by: syzbot+6692c72009680f7c4eb2@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Fedor Pchelkin <pchelkin@xxxxxxxxx>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>

Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxx>




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