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Fix off-by-one bug in range tree code

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Without this fix, zfs_range_tree_find_in could return an overlap when
the found range starts immediately after the searched range, with no
actual overlap.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Signed-off-by: Paul Dagnelie <paul.dagnelie@klarasystems.com>
Closes #17363
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Paul Dagnelie 2025-05-23 07:33:33 -07:00 committed by GitHub
parent 5c30b24381
commit ddf28f27c5
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module/zfs/range_tree.c
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@ -659,7 +659,7 @@ zfs_range_tree_find_in(zfs_range_tree_t *rt, uint64_t start, uint64_t size,
}
rs = zfs_btree_next(&rt->rt_root, &where, &where);
if (rs == NULL || zfs_rs_get_start(rs, rt) > start + size)
if (rs == NULL || zfs_rs_get_start(rs, rt) >= start + size)
return (B_FALSE);
*ostart = zfs_rs_get_start(rs, rt);