Open JoseGoncalves opened 4 years ago
I've been comparing the two device tree's, nothing really stand's out. (they are the same..)
I'll keep looking..
Just to add that the same kernel upgrade procedure in a BeagleBone Green Wireless works fine.
This issue is somehow related with Bluetooth in the BBGG.
If i blacklist the BT modules, adding a file /etc/modprobe.d/bluetooth-blacklist.conf
:
blacklist bnep
blacklist hci_uart
blacklist bluetooth
it works!
It seems also that it's related with some race condition, because, sometimes, I've seen the 4.19.135-bone55
kernel to work with BT enabled.
Some additional info dumped on the BB serial console when it crashes:
[ 34.280144] Bluetooth: hci0: command 0x1001 tx timeout
[ 42.472149] Bluetooth: hci0: Reading TI version information failed (-110)
[ 42.479195] Bluetooth: hci0: download firmware failed, retrying...
[ 44.520523] Bluetooth: hci0: command 0x1001 tx timeout
[ 52.712150] Bluetooth: hci0: Reading TI version information failed (-110)
[ 52.719043] Bluetooth: hci0: download firmware failed, retrying...
[ 73.716018] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 73.722155] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-0): P2616 P875
[ 73.729061] rcu: (detected by 0, t=5252 jiffies, g=32433, q=12)
[ 73.735762] rcu: rcu_preempt kthread starved for 5248 jiffies! g32433 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
[ 73.746240] rcu: RCU grace-period kthread stack dump:
[ 136.736014] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 136.742141] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-0): P2616 P875
[ 136.749044] rcu: (detected by 0, t=21007 jiffies, g=32433, q=12)
[ 136.755758] rcu: rcu_preempt kthread starved for 21003 jiffies! g32433 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 136.766147] rcu: RCU grace-period kthread stack dump:
[ 199.756011] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 199.762137] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-0): P2616 P875
[ 199.769040] rcu: (detected by 0, t=36762 jiffies, g=32433, q=12)
[ 199.775745] rcu: rcu_preempt kthread starved for 36758 jiffies! g32433 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 199.786134] rcu: RCU grace-period kthread stack dump:
@RobertCNelson Any progresses on this issue? This was not very relevant to me because I did not have any issues with 4.19.x kernels from ti-linux-kernel-dev, which I am currently using in my application. Nevertheless, recently I've seen it also happen with ti-linux-kernel-dev, what causes Bluetooth to be unavailable in BBGG. Has I indicated previously, It seems some kind of a race condition, because in some reboots the BBGG can boot with Bluetooth enabled.
Starting with the image
bone-debian-10.5-console-armhf-2020-08-31-1gb.img.xz
on a BeagleBone Green Gateway, I've upgraded the kernel via:and then rebooted.
The board boots, and I'm able to login via SSH, but shortly after it's unresponsive and the LEDs are freezed. On the serial console, I see these messages: