WLED: CORRUPT HEAP with 0.14.1-b2, ESP32, maybe related to MQTT

What happened?

Hello,

All my 5 ESP32’s running WLED_0.14.1-b2_ESP32.bin keep rebooting randomly, sometimes after only a few hours. They’re all connected to my MQTT broker, with moderate traffic.

I have another ESP32 with WLED_0.14.1-b2_ESP32_audioreactive.bin, on that one MQTT isn’t enabled, and since the upgrade from 0.14 to 0.14.1-b2, it’s stable so far (3 days uptime).

I have managed to capture a stacktrace, but i don’t know how to decode it.

This stacktrace was generated from WLED_0.14.1-b2_ESP32.bin, at least the binary from install.wled.me

To Reproduce Bug

• Install WLED_0.14.1-b2_ESP32.bin on ESP32
• Led type: WS2812b
• Connect to WiFi
• Enable MQTT (not secure), connect to broker with login/password
• Set an effect, for example “Chase” with 3 colors
• After a few hours, WLED crashes and returns to static orange

Expected Behavior

No crash

Install Method

Binary from WLED.me

What version of WLED?

WLED 0.14.1-b2 (build 2312290)

Which microcontroller/board are you seeing the problem on?

ESP32

Relevant log/trace output

CORRUPT HEAP: Bad head at 0x3ffd7838. Expected 0xabba1234 got 0x3ffd7864
abort() was called at PC 0x4008eb39 on core 0

ELF file SHA256: 0000000000000000

Backtrace: 0x40089af8:0x3ffb5d10 0x40089e55:0x3ffb5d30 0x4008eb39:0x3ffb5d50
0x4008543a:0x3ffb5d70 0x40085805:0x3ffb5d90 0x4000bec7:0x3ffb5db0
0x4016def2:0x3ffb5dd0 0x4016df29:0x3ffb5df0 0x4014974d:0x3ffb5e10
0x4008b89e:0x3ffb5e40

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DOUT, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:10124
load:0x40080400,len:5828
entry 0x400806a8
Ada

Anything else?

Thank you for your help!

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