[Ovmsdev] Stack overflow: What is task "itT"?

[Mark Webb-Johnson]

Perhaps set to 4096, then stress the system. SSH, webserver, etc.

Then, have a look at ‘module tasks’ and see the maximum it got to.

Regards, Mark.

> On 2 Mar 2018, at 2:00 PM, Greg D. <gregd2350 at gmail.com> wrote:
> 
> Yeah, stack size is 2560.  Tried bumping it to 4k, and that fixed it.  Backing down, it seems like just bumping it from 2560 to 2816 is sufficient to prevent the crash.
> 
> What value should I set it to?
> 
> Greg
> 
> 
> Mark Webb-Johnson wrote:
>> I think that is the TCP/IP task. Maybe CONFIG_TCPIP_TASK_STACK_SIZE?
>> 
>> Have a look in menuconfig and see what you have those stack sizes set to (/STACK to show them all). A ‘module tasks’ can show you the current running values. My tiT is 3072bytes in size (but max level is 696 bytes).
>> 
>> CONFIG_TCPIP_TASK_STACK_SIZE=2560
>> 
>> Regards, Mark
>> 
>>> On 2 Mar 2018, at 12:55 PM, Greg D. <gregd2350 at gmail.com <mailto:gregd2350 at gmail.com>> wrote:
>>> 
>>> Hi folks,
>>> 
>>> I just updated to the latest (7 commits), and am having trouble with a
>>> stack overflow in a task named "tiT".  Not sure if that's real, or if
>>> the task name has been corrupted.
>>> 
>>> My startup script enables both simcom and wifi.  Turning off wifi
>>> doesn't prevent the crash.  Turning off simcom does (I get all the way
>>> to the server connecting), so it's apparently somehow related to the
>>> modem and ppp stack.
>>> 
>>> Thoughts?
>>> 
>>> Greg
>>> 
>>> 
>>> W (10404) wifi: incorrect scan type: 1073533448
>>> I (11404) simcom: State timeout, transition to 2
>>> I (11404) simcom: State: Enter PoweringOn state
>>> I (11404) simcom: Power Cycle
>>> I (11894) housekeeping: System considered stable, auto init re-enabled
>>> I (17034) simcom: State: Enter PoweredOn state
>>> I (36404) simcom: State: Enter MuxStart state
>>> I (36404) gsm-mux: Start MUX
>>> I (36414) gsm-mux: Channel #0 is open
>>> I (36424) gsm-mux: Channel #1 is open
>>> I (36424) gsm-mux: Channel #2 is open
>>> I (36434) gsm-mux: Channel #3 is open
>>> I (36434) gsm-mux: Channel #4 is open
>>> I (37404) simcom: State: Enter NetWait state
>>> I (47484) simcom: CREG Network Registration: RegisteredRoaming
>>> I (48404) simcom: State: Enter NetStart state
>>> I (49494) simcom: PPP Connection is ready to start
>>> I (50404) simcom: State: Enter NetMode state
>>> I (50404) gsm-ppp: Initialising...
>>> W (50404) wifi: incorrect scan type: 1073533448
>>> OVMS > ***ERROR*** A stack overflow in task tiT has been detected.
>>> abort() was called at PC 0x4008f024 on core 1
>>> 0x4008f024: vApplicationStackOverflowHook at
>>> /home/greg/esp/esp-idf/components/esp32/./panic.c:648
>>> 
>>> 
>>> Backtrace: 0x4008ee34:0x3ffca170 0x4008f00b:0x3ffca190
>>> 0x4008f024:0x3ffca1b0 0x4008b52c:0x3ffca1d0 0x4008d534:0x3ffca1f0
>>> 0x4008d4ea:0x3ffb15dc
>>> 0x4008ee34: invoke_abort at
>>> /home/greg/esp/esp-idf/components/esp32/./panic.c:648
>>> 
>>> 0x4008f00b: abort at /home/greg/esp/esp-idf/components/esp32/./panic.c:648
>>> 
>>> 0x4008f024: vApplicationStackOverflowHook at
>>> /home/greg/esp/esp-idf/components/esp32/./panic.c:648
>>> 
>>> 0x4008b52c: vTaskSwitchContext at
>>> /home/greg/esp/esp-idf/components/freertos/./tasks.c:4837
>>> 
>>> 0x4008d534: _frxt_dispatch at
>>> /home/greg/esp/esp-idf/components/freertos/./portasm.S:406
>>> 
>>> 0x4008d4ea: _frxt_int_exit at
>>> /home/greg/esp/esp-idf/components/freertos/./portasm.S:206
>>> 
>>> 
>>> Rebooting...
>>> 
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>> 
>> 
>> 
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