linux-kernel - Re: [PATCH RESEND] Bluetooth: btusb: medaitek: fix double free of skb in coredump

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Date: Thu, 18 Apr 2024 11:40:26 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: Sean Wang <sean.wang@...iatek.com>, linux-bluetooth@...r.kernel.org,
 linux-mediatek@...ts.infradead.org, kernel-janitors@...r.kernel.org,
 Johan Hedberg <johan.hedberg@...il.com>,
 Luiz Von Dentz <luiz.dentz@...il.com>, Marcel Holtmann <marcel@...tmann.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Sean Wang <sean.wang@...nel.org>,
 Chris Lu <chris.lu@...iatek.com>, Dan Carpenter <dan.carpenter@...aro.org>,
 Deren Wu <deren.wu@...iatek.com>,
 Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
 Manish Mandlik <mmandlik@...gle.com>, Miao-chen Chou <mcchou@...omium.org>,
 Michael Sun <michaelfsun@...gle.com>, shawnku@...gle.com,
 frankgor@...gle.com, jsiuda@...gle.com
Subject: Re: [PATCH RESEND] Bluetooth: btusb: medaitek: fix double free of skb
 in coredump

> hci_devcd_append() would free the skb on error so the caller don't
> have to free it again otherwise it would cause the double free of skb.

I hope that a typo will be avoided in the subsystem specification
for the final commit.

Regards,
Markus