In the ARM arch, the version 1.15.8.1 rc0 has a segmentation fault

[luohuichang]

In the ARM arch, the version 1.15.8.1 rc0 has a segmentation fault

dict.flush_all() function will cause the Segmentation fault

nginx.conf:
lua_shared_dict test_dict 1m; in http

dofile code:
test_dict = ngx.shared.test_dict
test_dict:set("key", "value", 1000)
test_dict.flush_all() -- will cause segmentation fault

version:
https://openresty.org/download/openresty-1.15.8.1rc0.tar.gz
[root@kwephicprc03649 ELB_V3_nginx]# /usr/local/NSP/sbin/nginx -V
nginx version: openresty/1.15.8.1rc0
built by gcc 4.9.3 20160525 (prerelease) (GCC)
built with OpenSSL 1.1.0h 27 Mar 2018
TLS SNI support enabled

uname -r

4.1.43-01.25.vhulk1708.1.1.aarch64

dmesg:
[610835.327726] nginx[9053]: unhandled level 2 translation fault (11) at 0x00000000, esr 0x92000006
[610835.327731] pgd = ffff80038d345000
[610835.327733] [00000000] *pgd=00000003caaae003, *pud=00000003c8fc4003, *pmd=0000000000000000
[610835.327740] CPU: 7 PID: 9053 Comm: nginx Tainted: G E 4.1.44-06.160.vhulk1711.1.1.aarch64 #1
[610835.327743] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
[610835.327745] task: ffff8000ba9ae200 ti: ffff80038c6d0000 task.ti: ffff80038c6d0000
[610835.327760] PC is at 0x597f00
[610835.327762] LR is at 0x59ba00
[610835.327764] pc : [<0000000000597f00>] lr : [<000000000059ba00>] pstate: 20000000
[610835.327766] sp : 0000ffffe5b43510
[610835.327767] x29: 0000ffffe5b43510 x28: 000029faa1dbb710
[610835.327771] x27: 000029faa1de2b68 x26: 0000ffffe5b437b0
[610835.327773] x25: 0000000000000000 x24: 0000000000000003
[610835.327776] x23: 0000ffffe5b43708 x22: 0000000000000000
[610835.327779] x21: 000029faa1db21c8 x20: 0000000000000000
[610835.327781] x19: 0000ffffe5b43708 x18: 0000ffffe5b43400
[610835.327783] x17: 0000ffffa7f1e230 x16: 0000ffffa8284000
[610835.327786] x15: fffffffffffffff5 x14: 0000000000000031
[610835.327788] x13: 000029faa1dbf8a0 x12: 0000000000000065
[610835.327791] x11: 000000000059b8dc x10: 0000ffffe5b437a0
[610835.327793] x9 : ffffffffffffffff x8 : 0000ffffa8211d28
[610835.327796] x7 : 00000000000f4240 x6 : 0000000000000005
[610835.327798] x5 : 000029faa1db2150 x4 : 0000000000000004
[610835.327801] x3 : 0000000000000000 x2 : 0000000000000000
[610835.327803] x1 : 0000000000000002 x0 : fffffffffffffff8

[thibaultcha]

@luohuichang Could you share more info to help us reproduce this? I haven't been able to reproduce so far, with the following:

nginx -V
nginx version: openresty/1.15.8.1rc0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/opt/openresty-rc0/nginx --with-cc-opt=-O2 --add-module=../ngx_devel_kit-0.3.1rc1 --add-module=../echo-nginx-module-0.61 --add-module=../xss-nginx-module-0.06 --add-module=../ngx_coolkit-0.2 --add-module=../set-misc-nginx-module-0.32 --add-module=../form-input-nginx-module-0.12 --add-module=../encrypted-session-nginx-module-0.08 --add-module=../srcache-nginx-module-0.31 --add-module=../ngx_lua-0.10.14 --add-module=../ngx_lua_upstream-0.07 --add-module=../headers-more-nginx-module-0.33 --add-module=../array-var-nginx-module-0.05 --add-module=../memc-nginx-module-0.19 --add-module=../redis2-nginx-module-0.15 --add-module=../redis-nginx-module-0.3.7 --add-module=../rds-json-nginx-module-0.15 --add-module=../rds-csv-nginx-module-0.09 --add-module=../ngx_stream_lua-0.0.6 --with-ld-opt=-Wl,-rpath,/usr/local/opt/openresty-rc0/luajit/lib --with-pcre-jit --with-stream --with-stream_ssl_module --with-stream_ssl_preread_module --with-http_ssl_module

• rc0 (from your link) and the current state (practically rc1 from the openresty/openresty repository)
• arm64
• in a content_by_lua_handler
• with and without lua-resty-core
• with and without the typo in your code: test_dict.flush_all() vs test_dict:flush_all()

master_process off;
worker_processes 1;
error_log logs/error.log notice;

events {
}

http {
    lua_shared_dict test_dict 1m;

    init_by_lua_block {
        --require "resty.core"
    }

    server {
        listen 9000;

        location / {
            content_by_lua_block {
                test_dict = ngx.shared.test_dict
                test_dict:set("key", "value", 1000)
                test_dict.flush_all()
            }
        }
    }
}

Only by including the typo, a runtime error is thrown when calling flush_all() (due to the lack of arguments), but no segfault so far.

[luohuichang]

@thibaultcha
Hi, thibaultcha, thankyou!

I try again, mabe I used the old lua-resty-core in my own code.

[luohuichang]

Sorry, I have mistake to use the wrong lib(resty.core), the version work well at ARM now!

[David-Bo]

@luohuichang
请问，你现在用的哪个版本的lua-restay-core解决的？还有其他操作吗？
如果可以的话把你现有的配置发我下，谢谢。