search for: 0c5dedb

...- if (nbdkit_add_extent (extents, e.offset, e.length, e.type) == -1) + if (nbdkit_add_extent (extents, e.offset, e.length, e.type) == -1) { + *err = errno; return -1; + } } return 0; } diff --git a/filters/truncate/truncate.c b/filters/truncate/truncate.c index 076ae22..0c5dedb 100644 --- a/filters/truncate/truncate.c +++ b/filters/truncate/truncate.c @@ -319,6 +319,10 @@ truncate_extents (struct nbdkit_next_ops *next_ops, void *nxdata, * returned data to the original array. */ extents2 = nbdkit_extents_new (offset, real_size_copy); + if (extents2 == NULL) { +...

This fix isn't exhaustive but it fixes some obvious problems in the filters. Rich.