Stack smashing protect failure!
What it looks like
Stack smashing protect failure! abort() was called at PC 0x400d1b2f on core 1
What it means
A function wrote past the end of one of its local arrays and damaged the guard value the compiler places after it. The check runs when the function returns, so the culprit is the function named at the top of the backtrace.
Likely causes
- sprintf or strcpy into a local char buffer that is too small.
- An array index that reaches the array's length.
- memcpy or read() with a length larger than the destination.
How to fix it
- Use snprintf(buf, sizeof buf, ...) and strlcpy instead of sprintf and strcpy.
- Check loop bounds use < length, not <= length.
- Make the buffer larger, or move it off the stack.
Paste your full log
The lines around the error usually say more. Paste everything from the reset to the backtrace and the crash translator explains each part. It runs in your browser; nothing is sent anywhere.