https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222077
--- Comment #4 from Conrad Meyer <c...@freebsd.org> ---
(In reply to Maxim Khitrov from comment #3)
This issue is a userspace leak. It comes from g_metadata_store() in the geom
userspace code:
fd = g_open(name, 1);
...
sectorsize = g_sectorsize(fd); // E.g., 4096
...
assert(sectorsize >= (ssize_t)size); // size == metadata size, e.g.,
512
sector = malloc(sectorsize); // malloc doesn't zero contents
...
bcopy(md, sector, size); // only first size bytes are
initialized
if (pwrite(fd, sector, sectorsize, mediasize - sectorsize) !=
sectorsize) {
// sectorsize bytes are written
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