rpi2 lock ups

Hi Yall

the latest (OE 6.95.1 and) LE milhouse 7 - 0322b / 0324 - are locking up our pi2 in two different ways.

when doing video playback (im watching, so i notice) ... i can `ssh livingRoom killall -9 kodi.bin`

when its idle (i don't notice) ... when i need it, it wont even respond to ssh, nothing to do but pull the cord & reboot.

i think this is the relevant bit of my journalctl ... seems to be libmicrohttpd is not behaving ? gobbling up all my ram ?

please let me know if anything else would help getting to the bottom of this
[hr]
hmm. my initial assessment my be incorrect. im starting to think its BlueTooth

right before the segFault... i have this

Mar 24 18:04:06 livingRoom kernel: Transfer to device 6 endpoint 0x1 frame 1089 failed - FIQ reported NYET. Data may have been lost.

dev6 is my usbBT.

# lsusb -t
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
        |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=smsc95xx, 480M
        |__ Port 4: Dev 6, If 0, Class=Wireless, Driver=btusb, 12M
        |__ Port 4: Dev 6, If 1, Class=Wireless, Driver=btusb, 12M
        |__ Port 5: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 5: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M

i have a cron script running every 3min to check if my or the wife's phone is in the livingRoom ( `hcitool name $BTmac` )

looks like after the "frame fail" ... it takes about an 1hr for the hcitool scans to lock the system.

i've commented out the cron line for now.

let me know if you think im on the wrong path

at first i disabled the cron entry... that defiantly made it so it didnt lockup every hour, but it did after about 6 (overnight)

unplugged the dongle and it hasn't locked up in ~12 hrs.

few forced reboots, upg to 6.90.002 but our system is running much more stable now

seems like something in the new rPi firmware doesnt like my BT dongle

this might be useful. i'll try it another day.

Lots of "FIQ reported NYET. Data may have been lost." when using APC UPSD with apcupsd software. · Issue #624 · raspberrypi/linux · GitHub