id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
792	Chrome can't establish HTTP2 connection to nginx when URL contains long query string.	bsuh@…	Valentin V. Bartenev	"Chrome Version 45.0.2454.93 (64-bit) Mac OS X

I added this query string.
""?a=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa""

Debug log contains this line
2015/09/20 06:44:05 [info] 22#0: *1 client sent header field with incorrect length while processing HTTP/2 connection, client: 192.168.33.1, server: 0.0.0.0:443"	defect	closed	minor		nginx-module	1.9.x	fixed	http2		Linux f6972bcf5bd3 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.9.4
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
built with OpenSSL 1.0.2d 9 Jul 2015
TLS SNI support enabled
configure arguments: --add-module=/root/nginx-rtmp-module-1.1.7 --add-module=/root/ngx_pagespeed-release-1.9.32.4-beta --with-http_v2_module --with-http_ssl_module --with-openssl=/root/openssl-1.0.2d"