From: Szymon Janc <szymon.janc@xxxxxxxxxxx> commit 1c58e933aba23f68c0d3f192f7cc6eed8fabd694 upstream. Even with rate limited reporting this is very spammy and since it is remote device that is providing bogus data there is no need to report this as error. Since real_len variable was used only to allow conditional error message it is now also removed. [72454.143336] bt_err_ratelimited: 10 callbacks suppressed [72454.143337] Bluetooth: hci0: advertising data len corrected [72454.296314] Bluetooth: hci0: advertising data len corrected [72454.892329] Bluetooth: hci0: advertising data len corrected [72455.051319] Bluetooth: hci0: advertising data len corrected [72455.357326] Bluetooth: hci0: advertising data len corrected [72455.663295] Bluetooth: hci0: advertising data len corrected [72455.787278] Bluetooth: hci0: advertising data len corrected [72455.942278] Bluetooth: hci0: advertising data len corrected [72456.094276] Bluetooth: hci0: advertising data len corrected [72456.249137] Bluetooth: hci0: advertising data len corrected [72459.416333] bt_err_ratelimited: 13 callbacks suppressed [72459.416334] Bluetooth: hci0: advertising data len corrected [72459.721334] Bluetooth: hci0: advertising data len corrected [72460.011317] Bluetooth: hci0: advertising data len corrected [72460.327171] Bluetooth: hci0: advertising data len corrected [72460.638294] Bluetooth: hci0: advertising data len corrected [72460.946350] Bluetooth: hci0: advertising data len corrected [72461.225320] Bluetooth: hci0: advertising data len corrected [72461.690322] Bluetooth: hci0: advertising data len corrected [72462.118318] Bluetooth: hci0: advertising data len corrected [72462.427319] Bluetooth: hci0: advertising data len corrected [72464.546319] bt_err_ratelimited: 7 callbacks suppressed [72464.546319] Bluetooth: hci0: advertising data len corrected [72464.857318] Bluetooth: hci0: advertising data len corrected [72465.163332] Bluetooth: hci0: advertising data len corrected [72465.278331] Bluetooth: hci0: advertising data len corrected [72465.432323] Bluetooth: hci0: advertising data len corrected [72465.891334] Bluetooth: hci0: advertising data len corrected [72466.045334] Bluetooth: hci0: advertising data len corrected [72466.197321] Bluetooth: hci0: advertising data len corrected [72466.340318] Bluetooth: hci0: advertising data len corrected [72466.498335] Bluetooth: hci0: advertising data len corrected [72469.803299] bt_err_ratelimited: 10 callbacks suppressed Signed-off-by: Szymon Janc <szymon.janc@xxxxxxxxxxx> Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=203753 Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/bluetooth/hci_event.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -5416,7 +5416,7 @@ static void process_adv_report(struct hc struct hci_conn *conn; bool match; u32 flags; - u8 *ptr, real_len; + u8 *ptr; switch (type) { case LE_ADV_IND: @@ -5447,14 +5447,10 @@ static void process_adv_report(struct hc break; } - real_len = ptr - data; - - /* Adjust for actual length */ - if (len != real_len) { - bt_dev_err_ratelimited(hdev, "advertising data len corrected %u -> %u", - len, real_len); - len = real_len; - } + /* Adjust for actual length. This handles the case when remote + * device is advertising with incorrect data length. + */ + len = ptr - data; /* If the direct address is present, then this report is from * a LE Direct Advertising Report event. In that case it is
