agentzh

[agentzh@fed34-min ~ 0 ]$ sudo "dnf" install -y "openresty-openssl111-asan"
Last metadata expiration check: 0:00:01 ago on Tue May 11 12:26:10 2021.
Dependencies resolved.
==================================================================================================================================================================================
 Package                                               Architecture                       Version                                     Repository                             Size
==================================================================================================================================================================================
Installing:
 openresty-openssl111-asan                             x86_64                             1.1.1i-5.fc34                               openresty                             2.1 M
Installing dependencies:
 libasan                                               x86_64                             11.1.1-1.fc

agentzh

goto "https://www.youtube.com/watch?v=vfYxOMl5LVY"

elems(?):
    [Button "GOT IT"]=btn1

found:
    click -> btn1

elems(?):
    [Button "NO THANKS"]=btn0

agentzh

[V=browser-hello-module.mp4] Hello, I'm Matthew from OpenResty Inc. Today I'd demonstrate how to write your own Lua modules in your OpenResty applications, step by step.

Let's put our simple OpenResty application in a new directory named 'test-module'.

    $ cd ~/
    $ mkdir test-module/
    $ cd test-module/

And then we create the sub-directory structure as always:

agentzh

[V=browser-hello.mp4] Hi, I'm Matthew from OpenResty Inc. In this video, I'll demonstrate how to implement a "hello world" HTTP interface using OpenResty.

First of all, we make sure we are using OpenResty's nginx.

    [delay=0] $ export PATH=/usr/local/openresty/nginx/sbin:$PATH
    $ which nginx

[S] It's usually in this path.

And then we go to the home directory.

agentzh

$ sudo rr /opt/stap-plus/bin/staprun hello.ko
rr: Saving execution to trace directory `/root/.local/share/rr/staprun-0'.
[FATAL /home/agentzh/git/rr/rr/src/record_syscall.cc:5724:rec_process_syscall_arch()]
 (task 26471 (rec:26471) at time 394)
 -> Assertion `t->regs().syscall_result_signed() == -syscall_state.expect_errno' failed to hold. Expected ENOSYS for 'init_module' but got result 0 (errno SUCCESS); execution of syscall unsupported by rr
Tail of trace dump:
{
  real_time:2421511.598055 global_time:374, event:`SYSCALLBUF_FLUSH' tid:26471, ticks:453980
  { syscall:'close', ret:0x0, size:0x10 }
  { syscall:'openat', ret:0x3, size:0x10 }

agentzh

From 100d5e81de0f34ebba38472e373dece4c3449ea4 Mon Sep 17 00:00:00 2001
From: "Yichun Zhang (agentzh)" <[email protected]>
Date: Tue, 3 Mar 2020 15:15:30 -0800
Subject: [PATCH] Bug: proc_mem_rss() broken on older kernels lacking
 MM_SHMEMPAGES.

This is a regression introduced in commit de253786000.
---
 buildrun.cxx                           |  3 +++
 runtime/linux/autoconf-mm-shmempages.c |  5 +++++

agentzh

=== test/unportable/math_special.lua
Failed test when running /home/agentzh/git/luajit2-test-suite/s390x-luajit math_special.lua 1: 132
=== test/ffi/ffi_enum.lua
/opt/luajit-s390x/bin/luajit-2.1.0-beta3: ffi_enum.lua:53: too many callbacks
Failed test when running /home/agentzh/git/luajit2-test-suite/s390x-luajit ffi_enum.lua 1: 256
=== test/ffi/ffi_nosink.lua
=== test/ffi/ffi_jit_array.lua
=== test/ffi/ffi_parse_struct.lua
=== test/ffi/ffi_arith_ptr.lua
=== test/ffi/ffi_const.lua

agentzh

==== Building LuaJIT 2.1.0-beta3 ====
make -C src
make[1]: Entering directory '/home/agentzh/git/luajit-2.0/src'
HOSTCC    host/minilua.o
HOSTCC    host/buildvm_asm.o
HOSTCC    host/buildvm_peobj.o
HOSTCC    host/buildvm_lib.o
HOSTCC    host/buildvm_fold.o
CC        lj_gc.o
CC        lj_char.o

agentzh

Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50	  return ret;
(rr) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f2e1be7a5b9 in __GI_abort () at abort.c:79
#2  0x00007f2e1be7a491 in __assert_fail_base (fmt=0x7f2e1bfdd048 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=0x7f2e1cb2be68 "!((((o1)->it) - ((~4u)+1)) > ((~13u) - ((~4u)+1))) || ((~((o1)->it) == (((GCobj *)(uintptr_t)((o1)->gcr).gcptr32))->gch.gct) && !(((((GCobj *)(uintptr_t)((o1)->gcr).gcptr32)))->gch.marked & ((((global"...,
    file=0x7f2e1cb2be5a "lj_obj.h", line=926, function=<optimized out>) at assert.c:92
#3  0x00007f2e1be88612 in __GI___assert_fail (

agentzh

agentzh@glass ~/git/luajit-bug-report 0 (master)$ curl  http://localhost:8083/set
ok
agentzh@glass ~/git/luajit-bug-report 0 (master)$ while true; do wrk -t4 -c120 -d10  http://localhost:8083/; sleep 0.1; done
Running 10s test @ http://localhost:8083/
  4 threads and 120 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   720.03us  452.08us  22.28ms   99.06%
    Req/Sec    42.77k     2.21k   58.26k    85.11%
  1715219 requests in 10.10s, 294.36MB read
Requests/sec: 169825.77