From 6bebc1b5663eaae717126994953561cfcbc0b8f8 Mon Sep 17 00:00:00 2001
From: Nikolay Shirokovskiy <nshirokovskiy@tarantool.org>
Date: Thu, 5 Sep 2024 11:29:30 +0300
Subject: [PATCH] test: add test for #10148
The fix itself is in the small submodule which is bumped in the previous
commit.
Closes #10148
NO_DOC=bugfix
(cherry picked from commit e4ce9e111483a24d66e078f4f05679d309fcb94d)
---
...-10148-fix-small-crash-low-alloc-factor.md | 4 ++
...8_fix_crash_low_slab_alloc_factor_test.lua | 41 +++++++++++++++++++
2 files changed, 45 insertions(+)
create mode 100644 changelogs/unreleased/gh-10148-fix-small-crash-low-alloc-factor.md
create mode 100644 test/box-luatest/gh_10148_fix_crash_low_slab_alloc_factor_test.lua
diff --git a/changelogs/unreleased/gh-10148-fix-small-crash-low-alloc-factor.md b/changelogs/unreleased/gh-10148-fix-small-crash-low-alloc-factor.md
new file mode 100644
index 0000000000..1b20d06b32
--- /dev/null
+++ b/changelogs/unreleased/gh-10148-fix-small-crash-low-alloc-factor.md
@@ -0,0 +1,4 @@
+## bugfix/box
+
+- Fixed a crash when `slab_alloc_factor` is low and memory pressure is high
+ (gh-10148).
diff --git a/test/box-luatest/gh_10148_fix_crash_low_slab_alloc_factor_test.lua b/test/box-luatest/gh_10148_fix_crash_low_slab_alloc_factor_test.lua
new file mode 100644
index 0000000000..226edb7e5b
--- /dev/null
+++ b/test/box-luatest/gh_10148_fix_crash_low_slab_alloc_factor_test.lua
@@ -0,0 +1,41 @@
+local server = require('luatest.server')
+local t = require('luatest')
+
+local g = t.group()
+
+g.before_all(function(cg)
+ cg.server = server:new({
+ box_cfg = {
+ slab_alloc_factor = 1.001,
+ memtx_memory = 64 * 1024 * 1024,
+ wal_mode = 'none',
+ }
+ })
+ cg.server:start()
+end)
+
+g.after_all(function(cg)
+ cg.server:drop()
+end)
+
+g.after_each(function(cg)
+ cg.server:exec(function()
+ if box.space.test ~= nil then
+ box.space.test:drop()
+ end
+ end)
+end)
+
+g.test_low_slab_alloc_factor = function(cg)
+ cg.server:exec(function()
+ local test = box.schema.create_space('test')
+ test:create_index('pri')
+ for i=1,1000000 do
+ local ok, err = pcall(test.insert, test, {i, string.rep('x', 1000)})
+ if not ok then
+ t.assert_equals(err:unpack().type, 'OutOfMemory')
+ break
+ end
+ end
+ end)
+end
--
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