ML-dev-crypto opened a new pull request, #19444:
URL: https://github.com/apache/nuttx/pull/19444
## Summary
This fixes a divide-by-zero in `stat()` when a filesystem reports a block
size larger than can be represented by `blksize_t`.
`blksize_t` is currently defined as `int16_t`. For filesystems with block
sizes larger than 32767 bytes (for example, LittleFS on NAND devices using
64 KiB or 128 KiB erase blocks), `st_blksize` may overflow to zero. This
causes an integer divide-by-zero when `st_blocks` is calculated.
## Changes
- Widen `blksize_t` from `int16_t` to `int32_t` in `include/sys/types.h`.
- Update `nuttx_blksize_t` in `include/nuttx/fs/hostfs.h` to keep it
consistent with `blksize_t`.
Fixes #19432
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