[Tarantool-patches] [PATCH v2 0/2] vinyl: fix uninitialized memory accesses
Nikita Pettik
korablev at tarantool.org
Wed Apr 15 01:22:44 MSK 2020
It is found that if vy_stmt_alloc() fails (due to OOM or most likely
owing to exceeding max tuple size) during compaction process, it may
result in instance crashes. This patch-set contains two fixes for
problems connected with wrong handling of vy_stmt_alloc() failure.
Branch: https://github.com/tarantool/tarantool/commits/np/gh-4864-access-to-uninit-mem
Issue: https://github.com/tarantool/tarantool/issues/4864
Changes in v2:
- replaced error injection ERRINJ_VY_MAX_TUPLE_SIZE with
ERRINJ_VY_STMT_ALLOC (i.e. now vy_stmt_alloc() fails not due to exceed
max size, but owing to allocation failure);
- found another one use-after-free bug in case vy_read_view_merge()
fails. Fix is merged into second patch;
- added ERRINJ_VY_READ_VIEW_MERGE_FAIL to provide test case in
case of vy_read_view_merge() failure;
- fixed test covering second bug: error injection value accidentally
was set to a wrong value (bad copy-paste).
@ChangeLog:
* Fixed crash during compaction due to tuples with size exceeding
vinyl_max_tuple_size setting.
Nikita Pettik (2):
vinyl: init all vars before cleanup in vy_lsm_split_range()
vinyl: clean-up unprocessed read views in *_build_read_views()
src/box/vy_lsm.c | 4 +-
src/box/vy_stmt.c | 10 +
src/box/vy_write_iterator.c | 23 +-
src/errinj.h | 2 +
test/box/errinj.result | 2 +
.../gh-4864-stmt-alloc-fail-compact.result | 237 ++++++++++++++++++
.../gh-4864-stmt-alloc-fail-compact.test.lua | 103 ++++++++
test/vinyl/suite.ini | 2 +-
8 files changed, 377 insertions(+), 6 deletions(-)
create mode 100644 test/vinyl/gh-4864-stmt-alloc-fail-compact.result
create mode 100644 test/vinyl/gh-4864-stmt-alloc-fail-compact.test.lua
--
2.17.1
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