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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2019-12-16 23:37:47 +0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-23 00:08:33 +0300 |
| commit | b5a5c4c1033af72b94c1ba7a71f61e4231f27832 (patch) | |
| tree | 3bd093a9080cf547e90c2ebbd1c9b84eee9f963d /fs | |
| parent | ae2f17d5ad02bc85a31d09c4396e177581abbb1f (diff) | |
| download | linux-b5a5c4c1033af72b94c1ba7a71f61e4231f27832.tar.xz | |
bcachefs: Fix a null ptr deref in btree_iter_traverse_one()
When traversing nodes and we've reached the end of the btree, the
current btree node will be NULL.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bcachefs/btree_iter.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/bcachefs/btree_iter.c b/fs/bcachefs/btree_iter.c index f05a5e718181..34443d18bc42 100644 --- a/fs/bcachefs/btree_iter.c +++ b/fs/bcachefs/btree_iter.c @@ -1148,7 +1148,8 @@ static int btree_iter_traverse_one(struct btree_iter *iter) iter->uptodate = BTREE_ITER_NEED_PEEK; bch2_btree_trans_verify_locks(iter->trans); - __bch2_btree_iter_verify(iter, iter->l[iter->level].b); + if (btree_iter_node(iter, iter->level)) + __bch2_btree_iter_verify(iter, iter->l[iter->level].b); return 0; } |