[Ovmsdev] Attempting to ssh in too soon after a reboot causes an abort() from esp_sha_read_digest_state()

[Mark Webb-Johnson]

Craig,

I tried to repeat this, without success.

Your backtrace seems to implicate sha256 hashing, in the ssl_tls call chain, but that doesn’t make much sense for ssh. Maybe memory corruption? Is anything else using ssl in your config?

Regards, Mark.

> On 26 Jun 2023, at 1:24 AM, Craig Leres <leres at xse.com> wrote:
> 
> [third attempt, apparently my opendkim sendmail milter was borked and needed to be restarted...]
> 
> I updated to 3.3.003-518-gb6c10a59 a few days ago and noticed if I'm too impatient trying to ssh into the module after rebooting, it crashes. I suspect this is easy to reproduce.
> 
> 		Craig
> 
> ===============================================================
> 
> OVMS# boot
> Last boot was 501 second(s) ago
> Time at boot: 2023-06-21 19:49:18 PDT
>  This is reset #8 since last power cycle
>  Detected boot reason: EarlyCrash (12/12)
>  Reset reason: Exception/panic (4)
>  Crash counters: 1 total, 1 early
> 
> Last crash: abort() was called on core 1
>  Current task on core 0: IDLE0, 524 stack bytes free
>  Current task on core 1: OVMS NetMan, 1208 stack bytes free
>  Backtrace:
>  0x400891b7 0x40089451 0x40268a11 0x40244aea 0x4023e892 0x40240287 0x4024f6bb 0x40240556 0x40240581 0x4012aaa0 0x4012c150 0x4012d89d 0x4012ddc3 0x4012a2aa 0x4011e2eb 0x4011e389
>  Version: 3.3.003-518-gb6c10a59-dirty/ota_1/main (build idf v3.3.4-849-g6e214dc33 Jun 20 2023 21:30:05)
> 
>  Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/3; MODEM SIM7600
> 
> ===============================================================
> 
> ice 104 % git describe
> 3.3.003-518-gb6c10a59
> ice 105 % cat backtrace.sh
> #!/bin/sh
> PATH=/usr/local/xtensa-esp32-elf/bin:${PATH}
> export PATH
> cd ${HOME}/src/OVMS.V3 || exit 1
> dn=`/bin/pwd`
> (set -x ; xtensa-esp32-elf-addr2line -e build/ovms3.elf $*) | sed -e s,^${dn}/,,
> ice 106 % !./
> ./backtrace.sh 0x400891b7 0x40089451 0x40268a11 0x40244aea 0x4023e892 0x40240287 0x4024f6bb 0x40240556 0x40240581 0x4012aaa0 0x4012c150 0x4012d89d 0x4012ddc3 0x4012a2aa 0x4011e2eb 0x4011e389
> + xtensa-esp32-elf-addr2line -e build/ovms3.elf 0x400891b7 0x40089451 0x40268a11 0x40244aea 0x4023e892 0x40240287 0x4024f6bb 0x40240556 0x40240581 0x4012aaa0 0x4012c150 0x4012d89d 0x4012ddc3 0x4012a2aa 0x4011e2eb 0x4011e389
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/panic.c:736
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/panic.c:736
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/esp32/hwcrypto/sha.c:272
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/port/esp_sha256.c:349
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_cli.c:3894
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649
> /home/ice/u0/leres/esp/openvehicles-xtensa-esp32-elf/components/mbedtls/mbedtls/library/ssl_tls.c:7649
> components/mongoose/mongoose/mongoose.c:1701
> components/mongoose/mongoose/mongoose.c:1701
> components/mongoose/mongoose/mongoose.c:1701
> components/mongoose/mongoose/mongoose.c:1701
> components/mongoose/mongoose/mongoose.c:1701
> main/ovms_netmanager.cpp:1198
> main/ovms_netmanager.cpp:1198
> 
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