[Ovmsdev] Boot Loop

[Mark Webb-Johnson]

Looks like a stack overflow in Housekeeping.

Can you see if increasing the 4096 -> 6144 in ovms_housekeeping.cpp xTaskCreatePinnedToCore solves this?

In general, it seems best to arrange to marshal command execution, timers, events, etc, into one task (with a suitably large stack) and dispatch from there. Housekeeping issues that system.startup event, but also timer.1, etc. I’ll have a look at this.

Regards, Mark.

> On 21 Jan 2018, at 5:25 PM, Tom Parker <tom at carrott.org> wrote:
> 
> The following script reliably puts the ovms into a boot loop:
> 
> vfs mkdir /store/events
> vfs mkdir /store/events/system.start
> vfs rm /store/events/system.start/startmeup
> vfs append "log level debug" /store/events/system.start/startmeup
> vfs append "server v2 start" /store/events/system.start/startmeup
> 
> Press the reset button and it loops with the log below.
> 
> It can be fixed by "make erase_flash flash" but this obviously erases your config.
> 
> If you swap the order of the two commands in the script, or if the script only contains on or other of the commands then it doesn't boot loop.
> 
> ets Jun  8 2016 00:22:57
> 
> rst:0x1 (POWERON_RESET),boot:0x1f (SPI_FAST_FLASH_BOOT)
> configsip: 156795334, SPIWP:0xee
> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
> mode:DIO, clock div:2
> load:0x3fff0018,len:4
> load:0x3fff001c,len:4456
> load:0x40078000,len:0
> ho 12 tail 0 room 4
> load:0x40078000,len:12988
> entry 0x40078d14
> I (168) ovms_main: Set default logging level for * to WARN
> 
> Welcome to the Open Vehicle Monitoring System (OVMS) - Async Console
> OVMS > ***ERROR*** A stack overflow in task Housekeeping has been detected.
> abort() was called at PC 0x4008a824 on core 1
> 0x4008a824: vApplicationStackOverflowHook at /home/ubuntu/esp/esp-idf/components/esp32/./panic.c:572
> 
> 
> Backtrace: 0x4008a70c:0x3ffcea70 0x4008a80b:0x3ffcea90 0x4008a824:0x3ffceab0 0x4008791c:0x3ffcead0 0x4008921c:0x3ffceaf0 0x400891d2:0x632e6769
> 0x4008a70c: invoke_abort at /home/ubuntu/esp/esp-idf/components/esp32/./panic.c:572
> 
> 0x4008a80b: abort at /home/ubuntu/esp/esp-idf/components/esp32/./panic.c:572
> 
> 0x4008a824: vApplicationStackOverflowHook at /home/ubuntu/esp/esp-idf/components/esp32/./panic.c:572
> 
> 0x4008791c: vTaskSwitchContext at /home/ubuntu/esp/esp-idf/components/freertos/./tasks.c:4837
> 
> 0x4008921c: _frxt_dispatch at /home/ubuntu/esp/esp-idf/components/freertos/./portasm.S:406
> 
> 0x400891d2: _frxt_int_exit at /home/ubuntu/esp/esp-idf/components/freertos/./portasm.S:206
> 
> 
> Rebooting...
> ets Jun  8 2016 00:22:57
> 
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