[Ovmsdev] LoadProhibited exception on core 0

[Michael Geddes]

The script works fine in the msys32 shell (or WSL) but you might need to
edit it to fit the location of the files.


Michael

On Tue, 4 July 2023, 6:11 pm Soko, <ovms at soko.cc> wrote:

> Hi Mark,
>
> I have the exact bin & elf I'm using (I've compiled it myself back in the
> day...). I've also found the script you are mentioning, but it seems to be
> a linux script, I'm on windows.
> Looking at the script though - educated guessing - it just looks at the
> address in the ELF file.
> Opening the ELF file with an hex-editor in windows reveals it ends at
> 0x0240D5DB.
>
>
>
> Do I have to translate the address somehow? Or is the a2l script doing
> more than just looking.
>
> I've also uploaded the bin & elf (http://soko.yourweb.de/ovms3.zip) if
> you wonna have a quick look.
>
> The backtrace (0x4028128f 0x402823bf) is more or less the only constant
> numbers I get with each crash. So if they are too short can I add/activate
> some trace which leads to more info without connecting to a laptop (my old
> devenv doesn't seem to work anymore, and it was Windows anyhow...)
>
> thx
> Soko
>
>
> On 04.07.2023 03:01, Mark Webb-Johnson wrote:
>
> To understand what is going on, you’ll need to get the ELF file for the
> *exact* build of firmware you are using, and then use the support/a2l
> script to decode the backtrace addresses to something human readable. If
> you can’t do this, you could try by letting us know the firmware version
> you are running, where you got it from (API or Dexters), and provide the
> backtrace addresses. If you are using standard firmware builds, you can
> normally find the .elf file by simply change ovms3.bin to ovms3.elf in the
> download URL.
>
> Alternatively, connect the module over USB to a laptop/workstation running
> the development build environment and GDB stub running to capture the panic.
>
> The backtrace you show below (0x4028128f 0x402823bf) does not seem to be
> valid (too short), and probably won’t help much.
>
> Regards, Mark.
>
> On 4 Jul 2023, at 5:41 AM, Soko <ovms at soko.cc> <ovms at soko.cc> wrote:
>
> Hi guys,
>
> Running happily my OVMS on my VW e-Up since 2020 it drives my crazy since
> today :(
>
> It restarts roughly every minute with this status afterwards:
> ------------
> Last boot was 28 second(s) ago
> Time at boot: 2023-07-03 21:25:07 CEST
> This is reset #1 since last power cycle
> Detected boot reason: Crash (12/12)
> Reset reason: Exception/panic (4)
> Crash counters: 1 total, 0 early
>
> Last crash: LoadProhibited exception on core 0
> Registers:
> PC : 0x4028128f PS : 0x00060d30 A0 : 0x802823c2 A1 : 0x3ffe71d0
> A2 : 0x3ffe9f9c A3 : 0x00000000 A4 : 0x00000000 A5 : 0x00000001
> A6 : 0x3ffe9fe8 A7 : 0x3ffe71d0 A8 : 0x0000005b A9 : 0xffffffff
> A10 : 0x00000e10 A11 : 0x0000000e A12 : 0x00000010 A13 : 0x3ffbd3ac
> A14 : 0x3f84e83c A15 : 0x3ffbd46b SAR : 0x00000010 EXCCAUSE: 0x0000001c
> EXCVADDR: 0x00000004 LBEG : 0x4008b0e9 LEND : 0x4008b11d LCOUNT :
> 0x00000000
> Backtrace:
> 0x4028128f 0x402823bf
> ------------
>
> And now the crazy part: It only happens when I'm connected to a specific
> WiFi/network?!?!
>
> What I've tried so far:
>
>    1. Factory Reset (multiple times)
>    2. Set a static IP address
>    3. Reconnect all cables and make sure all are snug and tight
>    4. Brought OVMS closer to the AP (only one, no mesh)
>    5. Restarted AP
>    6. Restarted DNS & DHCP Server
>    7. It even happens when I have no vehicle selected after a factory
>    reset
>
> It gets more crazy: My WiFi is via Unifi/Ubiquity. So I can have multiple
> SSIDs with the same AP. So all hardware involved is the same...
>
> When I connect to SSID "E3200", which is network 192.168.254.0/24, the
> exception happens every minute or so.
> When I connect to SSID "SurfHere" which is network 192.168.179.0/24,
> everything works fine!
>
> Do you guys have any idea why this is happening?
> I've tried to look at logs via Shell and "log level verbose" but nothing
> shows up. Is there more I can activate to log this issue?
>
> Maybe my hardware is faulty... Where do I get a new OVMS here in
> Europe/EU/Austria? Do I have to import in from the UK (
> https://shop.openenergymonitor.com/ovms/)?
>
> thanks heaps in advance,
> Soko
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>
>
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