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Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device

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[ Upstream commit 6b8cbcf08d ]

hu->serdev is NULL for hci_uart attached via non-serdev paths, but
qca_dmp_hdr() unconditionally dereferences hu->serdev->dev.driver->name,
causing a NULL pointer dereference.

Fix by guarding the dereference with a NULL check and falling back to
"hci_ldisc_qca" for the non-serdev case.

Fixes: 06d3fdfcdf ("Bluetooth: hci_qca: Add qcom devcoredump support")
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zijun Hu
2026-07-24 16:03:10 +02:00
committed by Greg Kroah-Hartman
parent b43dee28b7
commit 809230cc25
1 changed files with 1 additions and 1 deletions
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drivers/bluetooth/hci_qca.c
+1 -1
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@@ -1008,7 +1008,7 @@ static void qca_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb)
skb_put_data(skb, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Driver: %s\n",
hu->serdev->dev.driver->name);
hu->serdev ? hu->serdev->dev.driver->name : "hci_ldisc_qca");
skb_put_data(skb, buf, strlen(buf));
}