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46 lines
1.2 KiB
46 lines
1.2 KiB
From ea3b479be6cacb399a6541a00b1bdce17b0179d0 Mon Sep 17 00:00:00 2001
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From: Thierry FOURNIER <thierry.fournier@ozon.io>
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Date: Mon, 17 Jul 2017 00:44:40 +0200
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Subject: [PATCH 05/18] BUG/MEDIUM: lua: bad memory access
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We cannot perform garbage collection on unreferenced thread.
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This memory is now free and another Lua process can use it for
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other things.
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HAProxy is monothread, so this bug doesn't cause crash.
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This patch must be backported in 1.6 and 1.7
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(cherry picked from commit 7bd10d58d3aecf7cf1e5ee7df01193e07128a52d)
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Signed-off-by: Willy Tarreau <w@1wt.eu>
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---
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src/hlua.c | 12 +++---------
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1 file changed, 3 insertions(+), 9 deletions(-)
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diff --git a/src/hlua.c b/src/hlua.c
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index eb003558..a998860e 100644
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--- a/src/hlua.c
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+++ b/src/hlua.c
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@@ -895,16 +895,10 @@ void hlua_ctx_destroy(struct hlua *lua)
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* the garbage collection.
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*/
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if (lua->flags & HLUA_MUST_GC) {
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- if (!SET_SAFE_LJMP(lua->T))
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+ if (!SET_SAFE_LJMP(gL.T))
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return;
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- lua_gc(lua->T, LUA_GCCOLLECT, 0);
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- RESET_SAFE_LJMP(lua->T);
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- if (lua_status(lua->T) != LUA_OK) {
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- if (!SET_SAFE_LJMP(gL.T))
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- return;
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- lua_gc(gL.T, LUA_GCCOLLECT, 0);
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- RESET_SAFE_LJMP(gL.T);
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- }
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+ lua_gc(gL.T, LUA_GCCOLLECT, 0);
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+ RESET_SAFE_LJMP(gL.T);
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}
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lua->T = NULL;
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--
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2.13.0
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