erikcw

Keybase proof

I hereby claim:

• I am erikcw on github.
• I am erikwickstrom (https://keybase.io/erikwickstrom) on keybase.
• I have a public key whose fingerprint is 0D63 3A09 58DF 38F2 1491 52E5 7856 2211 74A1 3F19

To claim this, I am signing this object:

erikcw

erikcw

root@b13239f0d920:/opt/openresty/nginx/conf# ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0  21564  2228 ?        Ss   Feb24   0:00 /usr/bin/lua -lluarocks.loader /usr/local/lib/luarocks/rocks/lapis/1.4.3-1/bin/lapis server production
root        20  0.0  0.0   4440   652 ?        S    Feb24   0:00 sh -c /opt/openresty/nginx/sbin/nginx -p "$(pwd)"/'' -c 'nginx.conf.compiled'
root        22  0.0  0.1  54944  4280 ?        S    Feb24   0:00 nginx: master process /opt/openresty/nginx/sbin/nginx -p /opt/openresty/nginx/conf/ -c nginx.conf.compiled
nobody      24  0.0  0.0  54944  1964 ?        S    Feb24   0:00 nginx: cache manager process
nobody     473 94.6 25.9 1107220 1050740 ?     R    02:22 861:17 nginx: worker process is shutting down
root       478  0.1  0.0  18156  1964 ?        Ss   17:30   0:00 bash
root       498  0.0  0.0  15564  1144 ?        R+   17:31   0:00 ps aux
root@b13239f0d920:/opt/openresty/nginx/conf# gdb /opt/openresty/nginx/sbin/n

erikcw

# Dependencies
# nginx_lua
# lua uuid module (luarocks install uuid)

http {

    # this will be the request id
    map $host $request_uuid {
        default '';
    }

erikcw

# Initial state

class LogData(models.Model):
    report_job = models.ForeignKey('myapp.ReportJobs')
    #... more fields ...

erikcw

{
	"meta": {
		"limit": 10,
		"next": "/api/v1/audience/?draw=1&order_by=description&shared_audiences=true&limit=10&offset=10&stats=false",
		"offset": 0,
		"previous": null,
		"total_count": 18
	},
	"objects": [{
		"advertisers": [],

erikcw

from django.db import models

class SampleModel(models.Model):
    """
    blah blah
    """
    sample = models.IntegerField(blank=True, null=True, help_text="just need more quotes")
    sample = models.IntegerField(blank=True, null=True, help_text="just need more quotes")
    sample = models.IntegerField(blank=True, null=True, help_text="just need more quotes")
    sample = models.IntegerField(blank=True, null=True, help_text="just need more quotes")

erikcw

# Directions for reproducing the issue


/usr/local/openresty/nginx/sbin/nginx -p `pwd`/ -c nginx.conf.debug

Load the '/' URI.  Then refresh twice -- the backtrace will dump to the console on the 3rd refresh.

erikcw

    local headers = ngx.req.get_headers()
    headers['CF_VISITOR'] = ngx.var.x_scheme_json
    headers['X-Forwarded-Host'] = ngx.var.host
    url = "http://localhost:8888" .. tostring(ngx.var.uri)
    local res = ngx.location.capture('/proxy', {
      ctx = {
        headers = headers
      },
      vars = {
        _url = url

erikcw

*** glibc detected *** nginx: worker process: double free or corruption (!prev): 0x0000000001b30300 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7f2905687b96]
nginx: worker process(ngx_destroy_pool+0x54)[0x4181cc]
nginx: worker process(ngx_http_free_request+0x157)[0x44413b]
nginx: worker process[0x4448e5]
nginx: worker process(ngx_http_finalize_request+0x41a)[0x445256]
nginx: worker process(ngx_http_lua_finalize_request+0x13)[0x49ee3b]
nginx: worker process[0x4a4649]
nginx: worker process(ngx_http_lua_content_wev_handler+0x1b)[0x49fc8b]