BT Home Hub 5 xrx200 SMP "rcu_sched self-detected stall on CPU" panic and freeze
Username: Mauro Mozzarelli
Origin: https://bugs.openwrt.org/index.php?do=details&task_id=471
Supply the following if possible:
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Device problem occurs on BT Home Hub 5 (occuring on 2 routers)
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Software versions of LEDE release, packages, etc. r3266, r3285, r3289, r3292, r3293
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Steps to reproduce
Use the router normally, the freeze can happen in a few minutes or after several hours.
This happens on two routers: one is configured as a simple WiFi repeater, only one Ethernet connected, most services (dnsmasq, dhcp, dsl) are disabled.
The second router has DSL network + LAN + WiFi + RED Ethernet to additional
WAN
, openvpn, dhcp, dnsmasq, etc.
Although the configuration is very different, both freeze and it is difficult to determine under which circumstances.
Please see attached serial console log of one of the crashes.
I reverted back to r3220 which is the latest I saved without SMP and both routers have become stable again.
I had these routers running stable for several days before the SMP upgrade.
I hope that this can be fixed because with SMP enabled these routers are really fast, with SMP I get much higher throughput on openvpn encrypted tunnels.