From: Ilya Kosarev <i.kosarev@tarantool.org> To: tarantool-patches@dev.tarantool.org Cc: v.shpilevoy@tarantool.org Subject: [Tarantool-patches] [PATCH v3 1/2] b-tree: return NULL on matras_alloc fail Date: Mon, 20 Jan 2020 21:13:19 +0300 [thread overview] Message-ID: <591f17842bd4138b5598d6d69822195daef63375.1579541242.git.i.kosarev@tarantool.org> (raw) In-Reply-To: <cover.1579541242.git.i.kosarev@tarantool.org> In-Reply-To: <cover.1579541242.git.i.kosarev@tarantool.org> In bps_tree_create_leaf we use matras_alloc in case bps_tree_garbage_pop didn't work out. However it also might not succeed. Then we need to return NULL instead of dereferencing NULL pointer. Part of #3807 --- src/lib/salad/bps_tree.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/lib/salad/bps_tree.h b/src/lib/salad/bps_tree.h index d28b53f53..a10f0a32c 100644 --- a/src/lib/salad/bps_tree.h +++ b/src/lib/salad/bps_tree.h @@ -2147,8 +2147,11 @@ bps_tree_create_leaf(struct bps_tree *tree, bps_tree_block_id_t *id) { struct bps_leaf *res = (struct bps_leaf *) bps_tree_garbage_pop(tree, id); - if (!res) - res = (struct bps_leaf *)matras_alloc(&tree->matras, id); + if (res == NULL) { + res = (struct bps_leaf *) matras_alloc(&tree->matras, id); + if (res == NULL) + return NULL; + } res->header.type = BPS_TREE_BT_LEAF; tree->leaf_count++; return res; -- 2.17.1
next prev parent reply other threads:[~2020-01-20 18:13 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-01-20 18:13 [Tarantool-patches] [PATCH v3 0/2] Safe truncation and deletion Ilya Kosarev 2020-01-20 18:13 ` Ilya Kosarev [this message] 2020-01-21 10:32 ` [Tarantool-patches] [PATCH v3 1/2] b-tree: return NULL on matras_alloc fail Nikita Pettik 2020-01-31 8:18 ` Konstantin Osipov 2020-02-04 17:13 ` Nikita Pettik 2020-02-04 17:25 ` Konstantin Osipov 2020-02-04 18:08 ` Nikita Pettik 2020-02-04 18:25 ` Konstantin Osipov 2020-01-21 20:55 ` Vladislav Shpilevoy 2020-01-20 18:13 ` [Tarantool-patches] [PATCH v3 2/2] memtx: allow quota overuse for truncation and deletion Ilya Kosarev 2020-01-21 11:42 ` Nikita Pettik 2020-01-21 20:59 ` Vladislav Shpilevoy 2020-02-14 19:57 ` Ilya Kosarev 2020-01-31 8:21 ` Konstantin Osipov 2020-02-04 18:56 ` Ilya Kosarev 2020-02-04 20:06 ` Konstantin Osipov 2020-02-05 19:11 ` Ilya Kosarev 2020-02-05 19:17 ` Konstantin Osipov 2020-02-06 10:50 ` Ilya Kosarev 2020-02-06 14:29 ` Konstantin Osipov 2020-02-06 16:14 ` Ilya Kosarev 2020-02-06 16:26 ` Konstantin Osipov 2020-02-10 8:24 ` Ilya Kosarev 2020-02-10 9:49 ` Konstantin Osipov 2020-02-10 10:43 ` Ilya Kosarev 2020-02-10 10:50 ` Konstantin Osipov 2020-02-14 19:55 ` Ilya Kosarev
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