Bluez5 from master on 27 June 2022
1d6cfb8e625a944010956714c1802bc1e1fc6c4f
monitor: Fix crash when using RTT backend
Kernel:
5.4.199
After turning scan on, after a short time it hangs. Here are the packets to start discovery:
< HCI Command: LE Set Exte.. (0x08|0x0042) plen 6 #1777 [hci0] 11:06:02.731748
Extended scan: Enabled (0x01)
Filter duplicates: Enabled (0x01)
Duration: 0 msec (0x0000)
Period: 0.00 sec (0x0000)
> HCI Event: Command Complete (0x0e) plen 4 #1778 [hci0] 11:06:02.741529
LE Set Extended Scan Enable (0x08|0x0042) ncmd 1
Status: Success (0x00)
@ MGMT Event: Command Complete (0x0001) plen 4 {0x0001} [hci0] 11:06:02.741819
Start Discovery (0x0023) plen 1
Status: Success (0x00)
Address type: 0x06
LE Public
LE Random
@ MGMT Event: Discovering (0x0013) plen 2 {0x0001} [hci0] 11:06:02.741899
Address type: 0x06
LE Public
LE Random
Discovery: Enabled (0x01)
After a short time and 1215 devices found (0x0012), no commands may be executed:
bluetooth]# scan off
Failed to stop discovery: org.bluez.Error.InProgress
btmon output looks stuck. Often the output stops in the middle of an event:
> HCI Event: LE Meta Event (0x3e) plen 41 #3484 [hci0] 11:06:13.493567
LE Extended Advertising Report (0x0d)
Num reports: 1
Entry 0
Event type: 0x0010
Props: 0x0010
Use legacy advertising PDUs
Data status: ^[[0;32mComplete^[[0m
Legacy PDU Type: ADV_NONCONN_IND (0x0010)
Address type: Random (0x01)
Address: 0C:7D:02:DB:5A:57 (Non-Resolvable)
Prima
Note that "Primary PHY" is incomplete.
The hang during scan happens 100% of the time.
John Klug
