Guru Meditation Error: Core 1 panic'ed (StoreProhibited)
What it looks like
Guru Meditation Error: Core 1 panic'ed (StoreProhibited). Exception was unhandled. EXCVADDR: 0x00000000 Backtrace: 0x400d14f2:0x3ffb1f20 0x400d3a11:0x3ffb1f40
What it means
The code tried to write to an address it may not touch. The RISC-V chips (ESP32-C3, C6, H2) report it as "Store access fault". Like LoadProhibited, an EXCVADDR near zero points at a null pointer.
Likely causes
- Writing through a null or uninitialised pointer.
- Writing past the end of an array or a buffer from malloc().
- Using memory after it has been freed.
How to fix it
- Decode the backtrace to find the line that wrote.
- Check array indexes and buffer sizes in that function, especially loops that use <= instead of <.
- Replace sprintf and strcpy with snprintf and strlcpy so writes cannot overrun.
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