From: Yang Yingliang <yangyingliang@huawei.com>
Date: Wed, 7 Dec 2022 02:18:35 +0000 (+0800)
Subject: Bluetooth: RFCOMM: don't call kfree_skb() under spin_lock_irqsave()
X-Git-Tag: v5.15.92~1113
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=93a4a04558711db0fad5c29ed440d1a0a402a33f;p=platform%2Fkernel%2Flinux-rpi.git

Bluetooth: RFCOMM: don't call kfree_skb() under spin_lock_irqsave()

[ Upstream commit 0ba18967d4544955b2eff2fbc4f2a8750c4df90a ]

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: 81be03e026dc ("Bluetooth: RFCOMM: Replace use of memcpy_from_msg with bt_skb_sendmmsg")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 7324764..8d6fce9 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -590,7 +590,7 @@ int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb)
 
 		ret = rfcomm_dlc_send_frag(d, frag);
 		if (ret < 0) {
-			kfree_skb(frag);
+			dev_kfree_skb_irq(frag);
 			goto unlock;
 		}