FS#73664 - [powerdns-recursor] new luajit makes it crash
Attached to Project:
Community Packages
Opened by Oleksandr Natalenko (post-factum) - Monday, 07 February 2022, 07:58 GMT
Last edited by Sven-Hendrik Haase (Svenstaro) - Monday, 07 February 2022, 10:22 GMT
Opened by Oleksandr Natalenko (post-factum) - Monday, 07 February 2022, 07:58 GMT
Last edited by Sven-Hendrik Haase (Svenstaro) - Monday, 07 February 2022, 10:22 GMT
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Details
After upgrading `luajit` from `2.0.5-3` to
`2.1.0.beta3.r384.g1d7b5029-1` `pdns-recursor` started to
crash often with the following error:
``` pdns_recursor: ext/luawrapper/include/LuaContext.hpp:107: LuaContext::LuaContext(bool)::<lambda(lua_State*)>: Assertion `false && "lua_atpanic triggered"' failed. ``` Downgrading `luajit` from `2.1.0.beta3.r384.g1d7b5029-1` to `2.0.5-3` solves the issue. Lua is being used like this: ``` lua-dns-script=/etc/powerdns/process.lua ``` and then in `/etc/powerdns/process.lua`: ``` test_questions = getMetric("test_questions") nontest_questions = getMetric("nontest_questions") function preresolve(dq) if string.find(dq.qname:toString(), "^%w+%.test%.dnscrypt%.$") ~= nil then test_questions:inc() else nontest_questions:inc() end -- DoS if dq.qtype == pdns.ANY then dq.appliedPolicy.policyKind = pdns.policykinds.Drop return false end return false end ``` |
This task depends upon
Closed by Sven-Hendrik Haase (Svenstaro)
Monday, 07 February 2022, 10:22 GMT
Reason for closing: Not a bug
Additional comments about closing: 2022-02-07: A task closure has been requested. Reason for request: Custom `MemoryDenyWriteExecute=true` setting is the culprit.
Monday, 07 February 2022, 10:22 GMT
Reason for closing: Not a bug
Additional comments about closing: 2022-02-07: A task closure has been requested. Reason for request: Custom `MemoryDenyWriteExecute=true` setting is the culprit.
Comment by
Oleksandr Natalenko (post-factum) -
Monday, 07 February 2022, 08:20 GMT
Disregard, it's because I have `MemoryDenyWriteExecute=true` in my
`.service` file. I wonder why it worked with old `luajit`.