diff options
| author | Christophe de Dinechin <dinechin@redhat.com> | 2017-04-28 11:50:23 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-05-02 19:01:50 +0200 |
| commit | 05011bf0d49d6b7e4ec5c2ac6c0181544f3a5b85 (patch) | |
| tree | 8ab2de7b35399d93f6b00d4055019a116918e916 /cmds-check.c | |
| parent | 53a88b50eae3d8f960a992e0aad8480c3732ee10 (diff) | |
btrfs-progs: check: prevent attempt to insert extent record with max_size==0
When this happens, we will trip a BUG_ON(end < start) in insert_state
because in check_extent_refs, we use this max_size expecting it's not zero:
set_extent_dirty(root->fs_info->excluded_extents,
rec->start,
rec->start + rec->max_size - 1);
See https://bugzilla.redhat.com/show_bug.cgi?id=1435567
for an example where this scenario occurs.
Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'cmds-check.c')
| -rw-r--r-- | cmds-check.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/cmds-check.c b/cmds-check.c index e8251198..571bd4e2 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -6030,6 +6030,7 @@ static int add_extent_rec_nolookup(struct cache_tree *extent_cache, struct extent_record *rec; int ret = 0; + BUG_ON(tmpl->max_size == 0); rec = malloc(sizeof(*rec)); if (!rec) return -ENOMEM; |