linux-kernel - Re: [PATCH] bluetooth: fix potential gfp

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Message-ID: <YJVdJEMKz6YcnwOW@hovoldconsulting.com>
Date:   Fri, 7 May 2021 17:30:44 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     Pavel Skripkin <paskripkin@...il.com>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Bluetooth Kernel Mailing List 
        <linux-bluetooth@...r.kernel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bluetooth: fix potential gfp

On Fri, May 07, 2021 at 05:20:11PM +0200, Marcel Holtmann wrote:
> Hi Johan,
> 
> >>> In qca_power_shutdown() qcadev local variable is
> >>> initialized by hu->serdev.dev private data, but
> >>> hu->serdev can be NULL and there is a check for it.
> >>> 
> >>> Since, qcadev is not used before
> >>> 
> >>> 	if (!hu->serdev)
> >>> 		return;
> >>> 
> >>> we can move its initialization after this "if" to
> >>> prevent gfp.
> >>> 
> >>> Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
> >>> ---
> >>> drivers/bluetooth/hci_qca.c | 4 ++--
> >>> 1 file changed, 2 insertions(+), 2 deletions(-)
> >> 
> >> patch has been applied to bluetooth-next tree.
> > 
> > Why did you pick the v1 when it is clear from thread that a v2 has been
> > posted?
> 
> because I only saw that email after I applied the patch and the v2 is
> nowhere in sight as it seems. If it shows up, I replace this one then.

Here it is

	https://lore.kernel.org/lkml/20210503100605.5223-1-paskripkin@gmail.com/

Johan