linux-kernel - Re: [Linux-kernel-mentees][PATCH] bluetooth: hci_h5: close serdev device and free hu in h5

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Date:   Thu, 1 Oct 2020 12:45:41 +0530
From:   Anant Thazhemadam <anant.thazhemadam@...il.com>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     linux-kernel-mentees@...ts.linuxfoundation.org,
        syzbot+6ce141c55b2f7aafd1c4@...kaller.appspotmail.com,
        Johan Hedberg <johan.hedberg@...il.com>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Linux-kernel-mentees][PATCH] bluetooth: hci_h5: close serdev
 device and free hu in h5_close


On 01/10/20 12:38 pm, Marcel Holtmann wrote:
> Hi Anant,
>
>> When h5_close() gets called, the memory allocated for the hu gets 
>> freed only if hu->serdev doesn't exist. This leads to a memory leak.
>> So when h5_close() is requested, close the serdev device instance and
>> free the memory allocated to the hu entirely instead.
>>
>> Fixes: https://syzkaller.appspot.com/bug?extid=6ce141c55b2f7aafd1c4
>> Reported-by: syzbot+6ce141c55b2f7aafd1c4@...kaller.appspotmail.com
>> Tested-by: syzbot+6ce141c55b2f7aafd1c4@...kaller.appspotmail.com
>> Signed-off-by: Anant Thazhemadam <anant.thazhemadam@...il.com>
>> ---
>> drivers/bluetooth/hci_h5.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
> patch has been applied to bluetooth-next tree.
>
> Regards
>
> Marcel

Great! Thanks :)

Thanks,
Anant