linux-kernel - Re: [syzbot] [wireless?] [usb?] WARNING in ath6kl_bmi_get_target

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Message-ID: <tencent_64FB06448999AEE1EEE50C9927E9C6D15206@qq.com>
Date: Sun, 25 Aug 2024 12:29:03 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+92c6dd14aaa230be6855@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [wireless?] [usb?] WARNING in ath6kl_bmi_get_target_info (2)

Actual read the bmi data length is 0 from the device

#syz test: upstream master

diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c
index 5220809841a6..2a89bab81b24 100644
--- a/drivers/net/wireless/ath/ath6kl/usb.c
+++ b/drivers/net/wireless/ath/ath6kl/usb.c
@@ -1034,6 +1034,9 @@ static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
 		ath6kl_err("Unable to read the bmi data from the device: %d\n",
 			   ret);
 		return ret;
+	} else {
+		ath6kl_err("Actual read the bmi data length is 0 from the device\n");
+		return -EIO;
 	}
 
 	return 0;