Hi, all, It turns out that the wrk crash is also caused by light user data issue on 48bit VA machine. The error is gone after applying "fix lightud type for 48-bit virtual address" patch ( https://www.freelists.org/post/luajit/fix-lightud-type-for-48bit-virtual-add... ).

On 20 October 2016 at 09:00, Zhongwei Yao zhongwei.yao@linaro.org wrote:

Hi, Zheng,

I'll take a look at the issue of wrk.

On 14 October 2016 at 09:27, Zheng Xu zheng.xu@linaro.org wrote:

...

Hi all,

So far we found 2 issues in the LuaJIT project :

• light userdata problem on 48-bit VA kernel.
  • Currently, Zhongwei is looking into it. The plan is to get a
  workable solution and push to upstream to discuss the problem.
• wrk doesn't work with LuaJIT.(Unknown cause, reproduced on SoftIron)
  • Currently, we don't have bandwidth to look into that.

So for the wrk related issue, it would be very appreciated if anyone can take a look.

Steps to reproduce the problem :

• Build and install wrk

echo "===== Install libssl-dev which is needed by wrk" apt-get -y install libssl-dev echo "===== Download, build and install LuaJIT-2.1 which is also needed by wrk" wget -O /root/LuaJIT-2.1.zip https://github.com/LuaJIT/LuaJ IT/archive/v2.1.zip # having problems with both on upstream and linaro branches unzip /root/LuaJIT-2.1.zip -d /root/ make PREFIX=/usr install -C /root/LuaJIT-2.1 ln -sf luajit-2.1.0-beta2 /usr/bin/luajit echo "===== Download wrk" wget -O /root/wrk-4.0.2.zip https://github.com/wg/wrk/archive/4.0.2.zip unzip /root/wrk-4.0.2.zip -d /root/ echo "===== Patch wrk to use luajit-2.1 rather than luajit-2.0" sed -i 's/luajit-2.0/luajit-2.1/g' /root/wrk-4.0.2/src/* echo "===== Build and install wrk" make WITH_LUAJIT=/usr WITH_OPENSSL=/usr -C /root/wrk-4.0.2 cp /root/wrk-4.0.2/wrk /usr/bin/

• run

wrk -d 1s -c 1 http://www.google.com

PANIC: unprotected error in call to Lua API

Regards, Zheng

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-- Best regards, Zhongwei