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J. Nick Koston
ac76f1fc3d
- Verify each candidate is a real return address by checking that the instruction at addr-3 is a CALL/CALLX (Xtensa 3-byte call opcodes). This filtering happens at log time when flash is readable, similar to the ESP32 RISC-V handler's is_return_addr() approach. - Scan the entire stack instead of just 64 words — with filtering, false positives from stale stack data are eliminated. - Skip epc1 during scanning (already reported as fault PC). - Increase to 16 RTC slots (72 bytes) for broader capture before filtering. Bump hint buffer to 256 for more addresses.
