https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237568
Bug ID: 237568
Summary: Panic when closing socket descriptor?
Product: Base System
Version: 12.0-RELEASE
Hardware: Any
OS: Any
Status: New
Keywords: crash, panic
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: rlwestl...@gmail.com
Created attachment 204020
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=204020&action=edit
Stack trace from kernel panic
Our setup is like this: FreeBSD 12.0-RELEASE-p3 running deployments of a web
service in multiple jails, each has nginx as an upstream to the nginx running
on the host, which is a reverse proxy (I think that's the right term?). The
in-jail nginx's are themselves partially reverse proxies to a Go program;
static files are served by nginx itself but dynamic content comes from the Go
server.
Problem: Occasionally, loading the web page crashes the entire host.
There doesn't seem to be any reliable way to reproduce it. We've tried turning
HTTP 2 on and off; it happens either way, but we haven't found any combination
of circumstances that causes it to happen more than occasionally (I'd estimate
something like 1 in 20 page reloads on average). Many times we've made a change
and thought we fixed it after >50 successful reloads but found that it does
still crash occasionally.
I'll attach the stack trace from the crash.
Kernel: GENERIC
Architecture: amd64
nginx version: 1.14.2_13,2
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