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Message-ID: <tencent_7ED368C373A96E43A20445F772B77FC6CF05@qq.com>
Date: Thu, 18 Jan 2024 06:53:47 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+830d9e3fa61968246abd@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bluetooth?] general protection fault in btintel_read_version
please test null ptr deref in btintel_read_version
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index cdc5c08824a0..e5b043d96207 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -435,7 +435,7 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver)
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT);
- if (IS_ERR(skb)) {
+ if (IS_ERR_OR_NULL(skb)) {
bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
PTR_ERR(skb));
return PTR_ERR(skb);
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