From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C1C48494 for ; Thu, 5 Jan 2023 13:01:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE519C433EF; Thu, 5 Jan 2023 13:01:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672923713; bh=SViWBbdyzqfbYBBvqtZub4yLYpEwnXWs7bj1PQCT9ns=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XO0s1P0b6annv2ZYKbeNvk/MVEPHMqECO5695uY8jt6PBTOI09YQCdqu+ssnlLdR8 okQkVAeWoHxeSATU1E9HEfaOMOowDnK87Fj6GIPCRW6ZWiASQXIU1VM3h8BllhXPdC 3bvG9DnvtdKy4Xt9OWeA9fofH134eqilYVAG91xc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 4.9 109/251] Bluetooth: btusb: dont call kfree_skb() under spin_lock_irqsave() Date: Thu, 5 Jan 2023 13:54:06 +0100 Message-Id: <20230105125339.818621905@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230105125334.727282894@linuxfoundation.org> References: <20230105125334.727282894@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yang Yingliang [ Upstream commit b15a6bd3c80c77faec8317319b97f976b1a08332 ] It is not allowed to call kfree_skb() from hardware interrupt context or with interrupts being disabled. So replace kfree_skb() with dev_kfree_skb_irq() under spin_lock_irqsave(). Fixes: 803b58367ffb ("Bluetooth: btusb: Implement driver internal packet reassembly") Signed-off-by: Yang Yingliang Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- drivers/bluetooth/btusb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 2069080191ee..532e492f92e0 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -440,13 +440,13 @@ static inline void btusb_free_frags(struct btusb_data *data) spin_lock_irqsave(&data->rxlock, flags); - kfree_skb(data->evt_skb); + dev_kfree_skb_irq(data->evt_skb); data->evt_skb = NULL; - kfree_skb(data->acl_skb); + dev_kfree_skb_irq(data->acl_skb); data->acl_skb = NULL; - kfree_skb(data->sco_skb); + dev_kfree_skb_irq(data->sco_skb); data->sco_skb = NULL; spin_unlock_irqrestore(&data->rxlock, flags); -- 2.35.1