it reports `Could not recognize stack trace/backtrace` C6, RISC-V

[kittaakos]

Thank @kittaakos . I've already read the guide, and could do it well with xtensa core. But with C6, RISC-V, it reports Could not recognize stack trace/backtrace

Core  0 register dump:
MEPC    : 0x42006c3a  RA      : 0x420016ac  SP      : 0x4081b9a0  GP      : 0x4080fed4  
TP      : 0x4081bae0  T0      : 0x40022494  T1      : 0x4080916c  T2      : 0x00000000  
S0/FP   : 0x40812000  S1      : 0x40815000  A0      : 0x00000000  A1      : 0x00000000  
A2      : 0x00000000  A3      : 0x00000001  A4      : 0x00000000  A5      : 0x00000000  
A6      : 0x600b1400  A7      : 0x00000000  S2      : 0x50003fec  S3      : 0x40818b58  
S4      : 0x40815000  S5      : 0x00000010  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x00000014  T4      : 0x40815000  T5      : 0x40815000  T6      : 0x00000000  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000005  MTVAL   : 0x00000008  
MHARTID : 0x00000000  

Stack memory:
4081b9a0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
4081b9c0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
4081b9e0: 0xffffffff 0x00000010 0xffffffff 0x00000000 0x00010000 0x00000000 0xffffffff 0x4080f788
4081ba00: 0x00000001 0x00000010 0xffffffff 0xffffffff 0x00000000 0x4080f788 0x00000000 0x4200ec1c
4081ba20: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0x00000000 0x00000011 0x00000010
4081ba40: 0xffffffff 0xffffffff 0x00000000 0x00000000 0x4080f788 0x00000000 0x00000001 0x4200ef98
4081ba60: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xba7c61b8
4081ba80: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081baa0: 0x00000000 0x00000000 0x00000000 0x4200fb90 0x00000000 0x00000000 0x00000000 0x00000000
4081bac0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
4081bae0: 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x0000016c 0xabba1234 0x00000160 0x4081b7b0 0x00000000
4081bb00: 0x40811f84 0x40811f84 0x4081baf8 0x40811f7c 0x00000018 0x4081c448 0x4081c448 0x4081baf8
4081bb20: 0x00000000 0x00000001 0x40819ae8 0x706f6f6c 0x6b736154 0x00000000 0x4081bae0 0x00000005
4081bb40: 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000571
4081bb60: 0x00000000 0x40815824 0x4081588c 0x408158f4 0x00000000 0x00000000 0x00000001 0x00000000
4081bb80: 0x00000000 0x00000000 0x4201977a 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bba0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bbc0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bbe0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bc00: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bc20: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bc40: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xbaad5678 0x00000068
4081bc60: 0xabba1234 0x0000005c 0x00000000 0x4081bc68 0x00000000 0x00000000 0x00000000 0x4081bc80
4081bc80: 0xffffffff 0x4081bc80 0x4081bc80 0x00000000 0x4081bc94 0xffffffff 0x4081bc94 0x4081bc94
4081bca0: 0x00000001 0x00000001 0x00000000 0x0000ffff 0x00000000 0x00000000 0x00000001 0x00000000
4081bcc0: 0x00000000 0xbaad5678 0x00000088 0xabba1234 0x0000007c 0x00000000 0x00000014 0x4081c488
4081bce0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x4081bd60 0x00000000 0x00000101
4081bd00: 0x00000000 0x00000000 0x0000000a 0x4081c52c 0x00000000 0x00000000 0x00000000 0x00000000
4081bd20: 0x00000000 0x00000000 0x00000000 0x00000000 0x4081bf70 0x4081c0dc 0x00000000 0x4081c2d8
4081bd40: 0x4081c26c 0x4081c41c 0x4081c3b0 0x4081c344 0xbaad5678 0x0000020c 0xabba1234 0x00000200
4081bd60: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081bd80: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000

Could not recognize stack trace/backtrace

Paste exception to decode...

Originally posted by @bhcuong2008 in #6

Please share the ELF file by attaching it as a zip (or any other allowed extension) if you can. Enable as much logging as possible (#10 (comment)), and share the details. Please also copy-paste the entire content of the decoder terminal. If it's shareable info, I would like to see it with sketch path, FQBN, etc.

The more you can share about your environment, the more likely I will be able to fix the problem. If only the monitor output is available, I can check if the parser part of the code is correct, but I won't be able to debug the gdb part 😕 Thanks!

[bhcuong2008]

Here is the test code to cause exception on ESP32-C6. While creating this example, there is a very strange thing that I can't explain it that I take note in the code (p->hello("Hello, World 1!"); // not cause exception, WHY?).

class Person {
public:
    Person() {
        Serial.printf("New person\n");
    }
    void hello(const char* msg) {
        Serial.printf("%s\n", msg);
    }
};

Person *p = NULL;
Person *p2 = NULL;
int *p3 = NULL;

void setup() {   
    Serial.begin(115200);
    Serial.printf("Test exception, p = 0x%X | p2 = 0x%X\n", p, p2);
    p->hello("Hello, World 1!");    // not cause exception, WHY?
    p2->hello("Hello, World 2!");   // not cause exception, WHY?
    *p3 = 10;   // Cause exception here
}

void loop() {    
    delay(2000);
}

Here is terminal log.

Rebooting...
ESP-ROM:esp32c6-20220919
Build:Sep 19 2022
rst:0xc (SW_CPU),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x4001975a
SPIWP:0xee
mode:DIO, clock div:2
load:0x40875720,len:0x126c
load:0x4086c110,len:0xff0
load:0x4086e610,len:0x30a8
entry 0x4086c110
Test exception, p = 0x0 | p2 = 0x0
Hello, World 1!
Hello, World 2!
Guru Meditation Error: Core  0 panic'ed (Store access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x420000a2  RA      : 0x42002014  SP      : 0x40815670  GP      : 0x4080ce84  
TP      : 0x408156b0  T0      : 0x40030dca  T1      : 0x40806908  T2      : 0x00000000  
S0/FP   : 0x00000000  S1      : 0x42036000  A0      : 0x00000010  A1      : 0x00000000  
A2      : 0x00000000  A3      : 0x00000001  A4      : 0x0000000a  A5      : 0x00000000  
A6      : 0x600b1400  A7      : 0x00000000  S2      : 0x00000000  S3      : 0x00000000  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x40815e30  T4      : 0x00000000  T5      : 0x00000000  T6      : 0x00000000  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
40815670: 0x00000000 0x00000000 0x00000000 0x42002014 0x00000000 0x00000000 0x00000000 0x00000000
40815690: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
408156b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x0000016c 0xabba1234 0x00000160 0x40815570
408156d0: 0x00000000 0x4080e504 0x4080e504 0x408156cc 0x4080e4fc 0x00000018 0x00000000 0x00000000
408156f0: 0x408156cc 0x00000000 0x00000001 0x408136bc 0x706f6f6c 0x6b736154 0x00000000 0x408156b0
40815710: 0x00000005 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815730: 0x0000005c 0x00000000 0x40810014 0x4081007c 0x408100e4 0x00000000 0x00000000 0x00000001
40815750: 0x00000000 0x00000000 0x00000000 0x4200b240 0x00000000 0x00000000 0x00000000 0x00000000
40815770: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815790: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815810: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xbaad5678
40815830: 0x00000068 0xabba1234 0x0000005c 0x00000000 0x4081583c 0x00000000 0x00000000 0x00000000
40815850: 0x40815854 0xffffffff 0x40815854 0x40815854 0x00000000 0x40815868 0xffffffff 0x40815868
40815870: 0x40815868 0x00000001 0x00000001 0x00000000 0xa500ffff 0x00000000 0xa5a5a5a5 0xa5a5a501
40815890: 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x00000088 0xabba1234 0x0000007c 0x00000000 0x00000014
408158b0: 0x40816100 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x40815934 0x00000000
408158d0: 0x00000101 0x00000000 0x00000000 0x0000000a 0x4081605c 0x00000000 0x00000000 0x00000000
408158f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x40815b44 0x40815cb0 0x00000000
40815910: 0x40815eac 0x40815e40 0x40815ff0 0x40815f84 0x40815f18 0xbaad5678 0x0000020c 0xabba1234
40815930: 0x00000200 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815950: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815970: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815990: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a10: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a30: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a50: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000



ELF file SHA256: 1e15f610a

Here is the decoder terminal.

ESP Exception Decoder
Sketch: WireScan FQBN: esp_cth:esp32:esp32c6

Guru Meditation Error: Core  0 panic'ed (Store access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x420000a2  RA      : 0x42002014  SP      : 0x40815670  GP      : 0x4080ce84  
TP      : 0x408156b0  T0      : 0x40030dca  T1      : 0x40806908  T2      : 0x00000000  
S0/FP   : 0x00000000  S1      : 0x42036000  A0      : 0x00000010  A1      : 0x00000000  
A2      : 0x00000000  A3      : 0x00000001  A4      : 0x0000000a  A5      : 0x00000000  
A6      : 0x600b1400  A7      : 0x00000000  S2      : 0x00000000  S3      : 0x00000000  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x40815e30  T4      : 0x00000000  T5      : 0x00000000  T6      : 0x00000000  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
40815670: 0x00000000 0x00000000 0x00000000 0x42002014 0x00000000 0x00000000 0x00000000 0x00000000
40815690: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
408156b0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x0000016c 0xabba1234 0x00000160 0x40815570
408156d0: 0x00000000 0x4080e504 0x4080e504 0x408156cc 0x4080e4fc 0x00000018 0x00000000 0x00000000
408156f0: 0x408156cc 0x00000000 0x00000001 0x408136bc 0x706f6f6c 0x6b736154 0x00000000 0x408156b0
40815710: 0x00000005 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815730: 0x0000005c 0x00000000 0x40810014 0x4081007c 0x408100e4 0x00000000 0x00000000 0x00000001
40815750: 0x00000000 0x00000000 0x00000000 0x4200b240 0x00000000 0x00000000 0x00000000 0x00000000
40815770: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815790: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408157f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815810: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xbaad5678
40815830: 0x00000068 0xabba1234 0x0000005c 0x00000000 0x4081583c 0x00000000 0x00000000 0x00000000
40815850: 0x40815854 0xffffffff 0x40815854 0x40815854 0x00000000 0x40815868 0xffffffff 0x40815868
40815870: 0x40815868 0x00000001 0x00000001 0x00000000 0xa500ffff 0x00000000 0xa5a5a5a5 0xa5a5a501
40815890: 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x00000088 0xabba1234 0x0000007c 0x00000000 0x00000014
408158b0: 0x40816100 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x40815934 0x00000000
408158d0: 0x00000101 0x00000000 0x00000000 0x0000000a 0x4081605c 0x00000000 0x00000000 0x00000000
408158f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x40815b44 0x40815cb0 0x00000000
40815910: 0x40815eac 0x40815e40 0x40815ff0 0x40815f84 0x40815f18 0xbaad5678 0x0000020c 0xabba1234
40815930: 0x00000200 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815950: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815970: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815990: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408159f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a10: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a30: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40815a50: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000



ELF file SHA256: 1e15f610a

Exception 7: Store/AMO access fault
MEPC: 0x420000a2
MTVAL: 0x00000000

Decoding stack results
0x00000000: ??

Paste exception to decode...

This is elf file built at default partition scheme (Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS)), at flash address 0x10000.
The editor of github not allow uploading .elf file.

==================================================
Now, I build the code to flash at address 0x30000, the exception program behavior is still the same, but in the decoder terminal, it reports Could not recognize stack trace/backtrace

Sketch: WireScan FQBN: esp_cth:esp32:cloudfermi_boot_esp32c6

Guru Meditation Error: Core  0 panic'ed (Store access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x420000a8  RA      : 0x42002f84  SP      : 0x408160e0  GP      : 0x4080ce84  
TP      : 0x40816120  T0      : 0x40030dca  T1      : 0x4080758e  T2      : 0x00000000  
S0/FP   : 0x00000000  S1      : 0x42037000  A0      : 0x00000010  A1      : 0x00000000  
A2      : 0x00000000  A3      : 0x00000001  A4      : 0x0000000a  A5      : 0x00000000  
A6      : 0x600b1400  A7      : 0x00000000  S2      : 0x00000000  S3      : 0x00000000  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x408168a0  T4      : 0x00000000  T5      : 0x00000000  T6      : 0x00000000  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
408160e0: 0x00000000 0x00000000 0x00000000 0x42002f84 0x00000000 0x00000000 0x00000000 0x00000000
40816100: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
40816120: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x0000016c 0xabba1234 0x00000160 0x40816080
40816140: 0x00000000 0x4081210c 0x4080e504 0x4081613c 0x4080e4fc 0x00000018 0x00000000 0x00000000
40816160: 0x4081613c 0x00000000 0x00000001 0x4081412c 0x706f6f6c 0x6b736154 0x00000000 0x40816120
40816180: 0x00000005 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408161a0: 0x00000000 0x00000000 0x40810014 0x4081007c 0x408100e4 0x00000000 0x00000000 0x00000001
408161c0: 0x00000000 0x00000000 0x00000000 0x4200c71a 0x00000000 0x00000000 0x00000000 0x00000000
408161e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816200: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816220: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816240: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816260: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816280: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xbaad5678
408162a0: 0x00000068 0xabba1234 0x0000005c 0x00000000 0x408162ac 0x00000000 0x00000000 0x00000000
408162c0: 0x408162c4 0xffffffff 0x408162c4 0x408162c4 0x00000000 0x408162d8 0xffffffff 0x408162d8
408162e0: 0x408162d8 0x00000001 0x00000001 0x00000000 0xa500ffff 0x00000000 0xbaad5678 0x00000001
40816300: 0xabba1234 0x0000007c 0xbaad5678 0x00000088 0xabba1234 0x0000007c 0x00000000 0x00000014
40816320: 0x40816b70 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x408163a4 0x00000000
40816340: 0x00000101 0x00000000 0x00000000 0x0000000a 0x40816acc 0x00000000 0x00000000 0x00000000
40816360: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x408165b4 0x40816720 0x00000000
40816380: 0x4081691c 0x408168b0 0x40816a60 0x408169f4 0x40816988 0xbaad5678 0x0000020c 0xabba1234
408163a0: 0x00000200 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408163c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408163e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816400: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816420: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816440: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816460: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816480: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408164a0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408164c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000



ELF file SHA256: a8896b669

Could not recognize stack trace/backtrace

Paste exception to decode...

[bhcuong2008]

Here is app built, flashed at 0x30000, that decoder reports Could not recognize stack trace/backtrace

app_0x30000.zip

[bhcuong2008]

Here is app built, flashed at 0x10000, using default partition scheme of ESP32C6 Dev, that could show some of decode, but not having line detail.
app_0x10000.zip

Exception 7: Store/AMO access fault
MEPC: 0x420000a2
MTVAL: 0x00000000

Decoding stack results
0x00000000: ??

[bhcuong2008]

Here is the source file .ino,
WireScan.zip

class Person {
public:
    Person() {
        Serial.printf("New person\n");
    }
    void hello(const char* msg) {
        Serial.printf("%s\n", msg);
    }
};

Person *p = NULL;
Person *p2 = NULL;
int *p3 = NULL;

void setup() {   
    Serial.begin(115200);
    Serial.printf("Test exception, p = 0x%X | p2 = 0x%X\n", p, p2);
    p->hello("Hello, World 1!");    // not cause exception, WHY?
    p2->hello("Hello, World 2!");   // not cause exception, WHY?
    *p3 = 10;   // Cause exception here
}

void loop() {    
    delay(2000);
}

[dankeboy36]

You're the best for providing me with all these details. I will look into the defect

FQBN: esp_cth:esp32:esp32c6

How did you install the ESP32 core?

Which version do you have installed?

[bhcuong2008]

I install Arduino ESP32 core via command line, using version 3.2.0, in Ubuntu environment. I built custom version from esp-idf to change setting values in sdkconfig. Anyway, it does not affect the test code.

[bhcuong2008]

To build app with flash address different from 0x10000, it must change manually file hardware/espressif/esp32/platform.txt to update 0x10000 with new value 0x30000.

[kittaakos]

I confirm that compiling, uploading, monitoring, and decoding the exception provides insufficient traces:

ESP Exception Decoder
Sketch: eed_issue43 FQBN: esp32:esp32:esp32c6

Guru Meditation Error: Core  0 panic'ed (Store access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x420000a2  RA      : 0x42002024  SP      : 0x408161d0  GP      : 0x4080bdd4  
TP      : 0x40816220  T0      : 0x400283c2  T1      : 0x40806910  T2      : 0x00000000  
S0/FP   : 0x00000000  S1      : 0x42027000  A0      : 0x00000010  A1      : 0x00000000  
A2      : 0x00000000  A3      : 0x00000001  A4      : 0x0000000a  A5      : 0x00000000  
A6      : 0x600b1400  A7      : 0x00000000  S2      : 0x00000000  S3      : 0x00000000  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x4081699c  T4      : 0x00000000  T5      : 0x00000000  T6      : 0x00000000  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
408161d0: 0x00000000 0x00000000 0x00000000 0x42002024 0x00000000 0x00000000 0x00000000 0x40806c52
408161f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816210: 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678
40816230: 0x00000168 0xabba1234 0x0000015c 0x40815fc0 0x00000000 0x4080d534 0x4080d534 0x4081623c
40816250: 0x4080d52c 0x00000018 0x00000000 0x00000000 0x4081623c 0x00000000 0x00000001 0x4081422c
40816270: 0x706f6f6c 0x6b736154 0x00000000 0x00000000 0x40816220 0x00000004 0x00000000 0x00000001
40816290: 0x00000000 0x00000000 0x00000000 0x00000106 0x00000000 0x4080f1c4 0x4080f22c 0x4080f294
408162b0: 0x00000000 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x4200b42c 0x00000000
408162d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408162f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816310: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816330: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816350: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816370: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816390: 0x00000000 0x00000000 0xbaad5678 0x00000068 0xabba1234 0x0000005c 0x00000000 0x408163a8
408163b0: 0x00000000 0x00000000 0x00000000 0x408163c0 0xffffffff 0x408163c0 0x408163c0 0x00000000
408163d0: 0x408163d4 0xffffffff 0x408163d4 0x408163d4 0x00000001 0x00000001 0x00000000 0xa500ffff
408163f0: 0x00000000 0xa5a5a5a5 0xa5a5a501 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x00000088 0xabba1234
40816410: 0x0000007c 0x00000000 0x00000014 0x40816c6c 0x00000000 0x00000000 0x00000000 0x00000000
40816430: 0x00000000 0x408164a0 0x00000000 0x00000101 0x00000000 0x00000000 0x0000000a 0x40816bc8
40816450: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816470: 0x408166b0 0x4081681c 0x00000000 0x40816a18 0x408169ac 0x40816b5c 0x40816af0 0x40816a84
40816490: 0xbaad5678 0x0000020c 0xabba1234 0x00000200 0x00000000 0x00000000 0x00000000 0x00000000
408164b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408164d0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408164f0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816510: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816530: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816550: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816570: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
40816590: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
408165b0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000



ELF file SHA256: 3206192b6

Exception 7: Store/AMO access fault
MEPC: 0x420000a2
MTVAL: 0x00000000

Decoding stack results
0x526c8040: ??

Paste exception to decode...

Here is app built, flashed at 0x30000

Here is app built, flashed at 0x10000

I can't comment on these, unfortunately.

There is another project (https://github.com/dankeboy36/trbr) that provides slightly better decoded output:

Core 0 | Store/AMO access fault | 7

PC → 0x420000a2: setup() at /Users/kittaakos/dev/sandbox/trbr/.tests/sketches/eed_issue43/eed_issue43.ino:20
Addr → 0x00000000

0x526c8040: ??Waiting for the debugger to disconnect...

When looking at the stdout from gdb, it looks like this:

0x420000a2 in setup () at /Users/kittaakos/dev/sandbox/trbr/.tests/sketches/eed_issue43/eed_issue43.ino:20
20	  *p3 = 10;                      // Cause exception here
#0  0x420000a2 in setup () at /Users/kittaakos/dev/sandbox/trbr/.tests/sketches/eed_issue43/eed_issue43.ino:20
#1  0x42002024 in loopTask (pvParameters=<optimized out>) at /Users/kittaakos/Library/Arduino15/packages/esp32/hardware/esp32/3.2.0/cores/esp32/main.cpp:59
#2  0x526c8040 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

I will try to get the improvements from trbr into this project (#40), please bear with me.

[bhcuong2008]

@kittaakos thank you for ur effort. It's a good news that your trbr project has better output.
I'm looking forward to your improvements from trbr💯