ESP32-S* Safe Mode when using HTTPS / TLS TCP server #9937
Open
Description
CircuitPython version
Adafruit CircuitPython 9.2.1-45-ge596261dc1-dirty on 2024-12-29; Adafruit Feather ESP32-S3 TFT with ESP32S3
Adafruit CircuitPython 9.2.1-43-g2c720d9161-dirty on 2024-12-28; Waveshare ESP32-S3-ETH with ESP32S3Code/REPL
Various comments and example code using adafruit_httpserver library and manual TLS TCP socket server at: adafruit/Adafruit_CircuitPython_HTTPServer#88
Using latest HTTP Server library from that PR. Safe mode occurs with 9.2.1, or with DEBUG build from recent tip of main.
It is not necessary to have any client attempt to connect.
Behavior
Intermittent safe mode when running HTTPS servers, can be several minutes or a couple hours. DEBUG output shows crashes on Core 0 or on Core 1, with varying error messages. Not a lot of consistency. DEBUG backtraces are either corrupted or yield no useful output ( decode_backtrace.py just prints a number of blank lines).
Changing to a blocking accept() call seems to fix the issue, or at least I have not observed any Safe Mode occurrences when using blocking accept().
Tested predominantly on adafruit_feather_esp32s3_tft and waveshare_esp32_s3_eth (using wifi). @michalpokusa observed the issue on a Memento board.
Example adafruit_feather_esp32s3_tft debug output
W (13831) CP wifi: got ip
Guru Meditation Error: Core 1 panic'ed (Unhandled debug exception).
Debug exception reason: BREAK instr
Core 1 register dump:
PC : 0x403743c0 PS : 0x00060536 A0 : 0x4038d768 A1 : 0x3fca4020
A2 : 0x3c1afb40 A3 : 0x3c1a15b4 A4 : 0x0000003f A5 : 0x00000030
A6 : 0x0000000c A7 : 0x00000df9 A8 : 0x00000001 A9 : 0x3fcac68c
A10 : 0x00000001 A11 : 0x3fcb7888 A12 : 0x80384cbd A13 : 0x3fcba5f0
A14 : 0x00060023 A15 : 0x00000003 SAR : 0x00000019 EXCCAUSE: 0x00000001
EXCVADDR: 0x4038d738 LBEG : 0x40056f5c LEND : 0x40056f72 LCOUNT : 0xffffffff
Backtrace: 0x403743bd:0x3fca4020 0x4038d765:0x4038d768 |<-CORRUPTED
ELF file SHA256: 30a3826f5
CPU halted.
- - - -
W (13763) CP wifi: got ip
Guru Meditation Error: Core 0 panic'ed (Double exception).
Core 0 register dump:
PC : 0x4038db12 PS : 0x00040e36 A0 : 0x00000000 A1 : 0x3fcba710
A2 : 0x00060523 A3 : 0x00000000 A4 : 0x00060520 A5 : 0x00000004
A6 : 0x3fcac880 A7 : 0x3fcac884 A8 : 0x600c0034 A9 : 0x00000001
A10 : 0x3fc9e6cc A11 : 0xffffffff A12 : 0xb33fffff A13 : 0x00060523
A14 : 0x0000001e A15 : 0x0000abab SAR : 0x0000001c EXCCAUSE: 0x00000002
EXCVADDR: 0x00060513 LBEG : 0x420a8e74 LEND : 0x420a8e87 LCOUNT : 0x3fcba7b0
Backtrace: 0x4038db0f:0x3fcba710
ELF file SHA256: 30a3826f5
CPU halted.
- - - -
W (13840) CP wifi: got ip
Guru Meditation Error: Core 1 panic'ed (Unhandled debug exception).
Debug exception reason: BREAK instr
Backtrace: 0x403743bd:0x3fcac68c |<-CORRUPTED
Backtrace: 0xfffffffd:0x80379207 |<-CORRUPTED
ELF file SHA256: 30a3826f5
CPU halted.
- - - -
Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.
Backtrace: 0x42013059:0x3fcba740 0x3fcba77d:0x3fcba780 |<-CORRUPTED
Example waveshare_esp32_s3_eth debug output
W (15512) CP wifi: got ip
Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0).
Core 0 register dump:
PC : 0x403823ca PS : 0x00060e34 A0 : 0x820a9fed A1 : 0x3fcc15c0
A2 : 0x00060e23 A3 : 0x00000000 A4 : 0x00060e20 A5 : 0x3fcc7080
A6 : 0x3fcbcea8 A7 : 0x3fcbce90 A8 : 0x80378eae A9 : 0x3fcc15a0
A10 : 0x3fcbcea8 A11 : 0x00000001 A12 : 0x00000000 A13 : 0x00000000
A14 : 0x00060023 A15 : 0x00000003 SAR : 0x0000001d EXCCAUSE: 0x00000005
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Backtrace: 0x403823c7:0x3fcc15c0 0x420a9fea:0x3fcc15e0 0x420ab3af:0x3fcc1600 0x4038775b:0x3fcc1620
Core 1 register dump:
PC : 0x42003475 PS : 0x00060d34 A0 : 0x82003799 A1 : 0x3fcc0820
A2 : 0x3fca9dc8 A3 : 0x000005e0 A4 : 0x00000001 A5 : 0x00000075
A6 : 0x3c1e1a10 A7 : 0x000000ac A8 : 0x3c1e1a20 A9 : 0x3c1e3330
A10 : 0x0000005f A11 : 0x00000010 A12 : 0x00000000 A13 : 0x3fca9c30
A14 : 0x0000003f A15 : 0x00000003 SAR : 0x00000006 EXCCAUSE: 0x00000005
EXCVADDR: 0x00000000 LBEG : 0x42003d2c LEND : 0x42003d80 LCOUNT : 0x00000000
Backtrace: 0x42003472:0x3fcc0820 0x42003796:0x3fcc0840 0x4202504a:0x3fcc0860 0x42003eb7:0x3fcc08b0 0x42003322:0x3fcc08f0 0x4201420a:0x3fcc0910 0x4200e5a5:0x3fcc0930 0x42010046:0x3fcc0960 0x420100a9:0x3fcc0980 0x4204ce09:0x3fcc09a0 0x4203ef52:0x3fcc09c0 0x42015026:0x3fcc09f0 0x4200eb8d:0x3fcc0a10 0x4200ec55:0x3fcc0a30 0x4206a8f7:0x3fcc0a50 0x4206affd:0x3fcc0a70 0x42058249:0x3fcc0aa0 0x42015026:0x3fcc0ac0 0x4200eb8d:0x3fcc0ae0 0x4200ec55:0x3fcc0b00 0x420203e9:0x3fcc0b20 0x420151d9:0x3fcc0bc0 0x4200eb8d:0x3fcc0be0 0x4200ec55:0x3fcc0c00 0x420203e9:0x3fcc0c20 0x420151d9:0x3fcc0cc0 0x4200eb8d:0x3fcc0ce0 0x4200eba2:0x3fcc0d00 0x42071c36:0x3fcc0d20 0x4207205e:0x3fcc0dc0 0x420245c1:0x3fcc0de0 0x42024ab9:0x3fcc0e00 0x42025006:0x3fcc0e60 0x42026d2a:0x3fcc0e90 0x42168480:0x3fcc0eb0
ELF file SHA256: cb964ad5b
CPU halted.
- - - - -
W (15452) CP wifi: got ip
Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0).
Core 0 register dump:
PC : 0x403823ca PS : 0x00060c34 A0 : 0x820a9fed A1 : 0x3fcc15c0
A2 : 0x00060c23 A3 : 0x00000000 A4 : 0x00060c20 A5 : 0x3fcbca20
A6 : 0x3fcbcea8 A7 : 0x3fcbce90 A8 : 0x80378eae A9 : 0x3fcc15a0
A10 : 0x3fcbcea8 A11 : 0x00000001 A12 : 0x00000000 A13 : 0x00000000
A14 : 0x01ffffff A15 : 0x00000003 SAR : 0x0000001d EXCCAUSE: 0x00000005
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Backtrace: 0x403823c7:0x3fcc15c0 0x420a9fea:0x3fcc15e0 0x420ab3af:0x3fcc1600 0x4038775b:0x3fcc1620
Core 1 register dump:
PC : 0x420207fd PS : 0x00060334 A0 : 0x820151dc A1 : 0x3fcc0b20
A2 : 0x3c1f7642 A3 : 0x3c1f75c8 A4 : 0x3c1e0da4 A5 : 0x3c184b08
A6 : 0x3c1f7680 A7 : 0x3c1f75ca A8 : 0x3c1e0d94 A9 : 0x4201fd70
A10 : 0x3c184b08 A11 : 0x3c1e0de4 A12 : 0x3c182154 A13 : 0x3fcc0bb0
A14 : 0x3fcc0b48 A15 : 0x00000008 SAR : 0x00000020 EXCCAUSE: 0x00000005
EXCVADDR: 0x00000000 LBEG : 0x400570e8 LEND : 0x400570f3 LCOUNT : 0x00000000
Backtrace: 0x420207fa:0x3fcc0b20 0x420151d9:0x3fcc0bc0 0x4200eb8d:0x3fcc0be0 0x4200ec55:0x3fcc0c00 0x420203e9:0x3fcc0c20 0x420151d9:0x3fcc0cc0 0x4200eb8d:0x3fcc0ce0 0x4200eba2:0x3fcc0d00 0x42071c36:0x3fcc0d20 0x4207205e:0x3fcc0dc0 0x420245c1:0x3fcc0de0 0x42024ab9:0x3fcc0e00 0x42025006:0x3fcc0e60 0x42026d2a:0x3fcc0e90 0x42168480:0x3fcc0eb0
ELF file SHA256: cb964ad5b
CPU halted.
- - - -
I (28429532) wifi:<ba-add>idx:1 (ifx:0, a8:c0:ea:ab:f5:26), tid:6, ssn:2, winSize:64
Guru Meditation Error: Core 1 panic'ed (Interrupt wdt timeout on CPU1).
Core 1 register dump:
PC : 0x400570ec PS : 0x00060f34 A0 : 0x82003f11 A1 : 0x3fcc0910
A2 : 0x3c1f5d70 A3 : 0x00000000 A4 : 0x00000030 A5 : 0x3c1f5d80
A6 : 0x00000002 A7 : 0x00000003 A8 : 0x8200ec58 A9 : 0x3fcc0a10
A10 : 0x3c19087c A11 : 0x00000001 A12 : 0x00000000 A13 : 0x3c1efeb8
A14 : 0x3c1f7d70 A15 : 0x3c1f7c0d SAR : 0x0000001c EXCCAUSE: 0x00000006
EXCVADDR: 0x00000000 LBEG : 0x400570e8 LEND : 0x400570f3 LCOUNT : 0x00000001
Backtrace: 0x400570e9:0x3fcc0910 0x42003f0e:0x3fcc0920 0x42003339:0x3fcc0960 0x420113f1:0x3fcc0980 0x4204cded:0x3fcc09a0 0x4203ef52:0x3fcc09c0 0x42015026:0x3fcc09f0 0x4200eb8d:0x3fcc0a10 0x4200ec55:0x3fcc0a30 0x4206a8f7:0x3fcc0a50 0x4206affd:0x3fcc0a70 0x42058249:0x3fcc0aa0 0x42015026:0x3fcc0ac0 0x4200eb8d:0x3fcc0ae0 0x4200ec55:0x3fcc0b00 0x420203e9:0x3fcc0b20 0x420151d9:0x3fcc0bc0 0x4200eb8d:0x3fcc0be0 0x4200ec55:0x3fcc0c00 0x420203e9:0x3fcc0c20 0x420151d9:0x3fcc0cc0 0x4200eb8d:0x3fcc0ce0 0x4200eba2:0x3fcc0d00 0x42071c36:0x3fcc0d20 0x4207205e:0x3fcc0dc0 0x420245c1:0x3fcc0de0 0x42024ab9:0x3fcc0e00 0x42025006:0x3fcc0e60 0x42026d2a:0x3fcc0e90 0x42168480:0x3fcc0eb0
Core 0 register dump:
PC : 0x403823ca PS : 0x00060634 A0 : 0x820a9fed A1 : 0x3fcc15c0
A2 : 0x00060623 A3 : 0x00000000 A4 : 0x00060620 A5 : 0x03ca3430
A6 : 0x3fcbcea8 A7 : 0x3fcbce90 A8 : 0x80378eae A9 : 0x3fcc15a0
A10 : 0x3fcbcea8 A11 : 0x00000001 A12 : 0x00000000 A13 : 0x00000000
A14 : 0x00060023 A15 : 0x00000003 SAR : 0x0000001d EXCCAUSE: 0x00000006
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
Backtrace: 0x403823c7:0x3fcc15c0 0x420a9fea:0x3fcc15e0 0x420ab3af:0x3fcc1600 0x4038775b:0x3fcc1620
ELF file SHA256: cb964ad5b
CPU halted.
Description
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Additional information
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