Stack overflow after heater tuning

[vcapra1]

I cannot tune my heaters as every time I do, I get a stack overflow error (except on some rare occasions when it just works, which is odd).

This occurs right at the end of the last cycle:

No heater config is printed for me to put in config-override.g so the entire tuning was a waste of like 15 minutes.

Here is the full M122 dump after the reset caused by the error:

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2.2 running on Duet Ethernet 1.02 or later + DueX5
Board ID: 08DGM-9T6BU-FG3SJ-6JTDJ-3SN6P-9SYZG
Used output buffers: 3 of 24 (15 max)
=== RTOS ===
Static ram: 23460
Dynamic ram: 71864 of which 24 recycled
Never used RAM 16732, free system stack 195 words
Tasks: NETWORK(ready,167) HEAT(blocked,308) DUEX(blocked,31) MAIN(running,449) IDLE(ready,20)
Owned mutexes:
=== Platform ===
Last reset 00:00:10 ago, cause: software
Last software reset at 2021-04-27 21:09, reason: StackOverflow, Move spinning, available RAM 16732, slot 2
Software reset code 0x4104 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80e BFAR 0xe000ed38 SP 0x2001ffc4 Task HEAT Freestk 30309 bad marker
Stack: 200025d0 20002604 004554a5 2000460c 00454ad5 2000262c 2000460c 00000000 00f00000 e000ef34 c0000000 2000468c 00454c13 00454984 61000000 ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Error status: 0x00
Aux0 errors 0,0,0
MCU temperature: min 36.6, current 37.2, max 37.4
Supply voltage: min 24.3, current 24.3, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: position 0, standstill, SG min/max not available
Driver 1: position 0, standstill, SG min/max not available
Driver 2: position 0, standstill, SG min/max not available
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max not available
Driver 5: position 0, standstill, SG min/max not available
Driver 6: position 0, standstill, SG min/max not available
Driver 7: position 0, standstill, SG min/max not available
Driver 8: position 0, standstill, SG min/max not available
Driver 9: position 0, standstill, SG min/max not available
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-04-27 21:09:13
Cache data hit count 14053254
Slowest loop: 6.19ms; fastest: 0.22ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 9
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 3.3ms, write time 3.8ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 11.32ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex
=== DueX ===
Read count 1, 5.53 reads/min

[dc42]

@vcapra1, thanks for your report. This may already be fixed in firmware 3.3beta3, but if not then I will increase the Heat task stack size further.

[vcapra1]

@dc42 Thanks for your reply. It still seems to be an issue in 3.3beta3:

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.3beta3 (2021-04-22 16:27:28) running on Duet Ethernet 1.02 or later + DueX5
Board ID: 08DGM-9T6BU-FG3SJ-6JTDJ-3SN6P-9SYZG
Used output buffers: 1 of 24 (16 max)
=== RTOS ===
Static ram: 23156
Dynamic ram: 73736 of which 0 recycled
Never used RAM 17524, free system stack 204 words
Tasks: NETWORK(ready,24.1%,216) HEAT(delaying,0.0%,310) Move(notifyWait,0.1%,214) DUEX(notifyWait,0.0%,24) MAIN(running,74.0%,441) IDLE(ready,1.8%,19), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:00:11 ago, cause: software
Last software reset at 2021-04-28 19:56, reason: StackOverflow, GCodes spinning, available RAM 17524, slot 0
Software reset code 0x4103 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80e BFAR 0xe000ed38 SP 0x2001ffbc Task HEAT Freestk 28713 ok
Stack: 20003ebc 20003ef0 0045acf9 00000000 20005958 000000c8 0045a385 20003f1c 20005958 00000000 00f00000 e000e000 c0000000 00000002 0045a4c1 0045a238 21000000 ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
Error status: 0x00
Aux0 errors 0,0,0
Step timer max interval 0
MCU temperature: min 32.9, current 33.4, max 33.8
Supply voltage: min 24.3, current 24.4, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, standstill, SG min/max not available
Driver 1: position 0, standstill, SG min/max not available
Driver 2: position 0, standstill, SG min/max not available
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max not available
Driver 5: position 0, standstill, SG min/max not available
Driver 6: position 0, standstill, SG min/max not available
Driver 7: position 0, standstill, SG min/max not available
Driver 8: position 0, standstill, SG min/max not available
Driver 9: position 0, standstill, SG min/max not available
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-04-28 19:57:09
Cache data hit count 455436309
Slowest loop: 5.58ms; fastest: 0.17ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 9
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 3.3ms, write time 30.0ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== DueX ===
Read count 1, 5.10 reads/min
=== Network ===
Slowest loop: 13.08ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex

[vcapra1]

@vcapra1 Actually I just realized the stack size change was committed after 3.3beta3 was released, I'll try compiling the latest version and see if it helps

[vcapra1]

Ok with the latest updates it seems to be working, thanks!