not sure, if this an upstream google/brotli issue, but since I'm using cloudflare's bundle I'll put it here first, maybe you guys have an idea what's going on:
I packaged nginx 1.9.5 for debian, with ngx_brotli_module-master.
brotli on;
brotli_comp_level 6;
brotli_min_length 1000;
nginx sits behind nghttpx, a tls offloader and http2 proxy, communicating over http/1.1/no-tls with the nginx backend.
When opening a page with multiple png images (rand() generated) with chrome or firefox, everything's fine, using gzip though.
Opening the same page with curl, both HTTP/1.1 and HTTP2, nginx crashes immediately.
curl 7.45.0 (x86_64-pc-linux-gnu) libcurl/7.45.0 GnuTLS/3.3.18 zlib/1.2.8 libidn/1.32 libssh2/1.5.0 nghttp2/1.3.4 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets
Reading symbols from ./nginx...done.
warning: exec file is newer than core file.
[New LWP 16376]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `nginx: worker pr'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f9e2c55d8c0 in ngx_http_brotli_header_filter (r=0x7f9e2cb60820)
at /home/daniel/code/nginx/nginx-1.9.5/debian/modules/ngx_brotli_module-master/ngx_http_brotli_filter_module.c:171
171 if (!ngx_strstrn(ae->value.data, "br", 1)) {
(gdb) bt full
#0 0x00007f9e2c55d8c0 in ngx_http_brotli_header_filter (r=0x7f9e2cb60820)
at /home/daniel/code/nginx/nginx-1.9.5/debian/modules/ngx_brotli_module-master/ngx_http_brotli_filter_module.c:171
h = 0x7f9e2cb60d88
ae = 0x0
ctx = 0x7f9e2cb60820
conf = 0x7f9e2cb7e338
#1 0x00007f9e2c51cf32 in ngx_http_headers_filter (r=0x7f9e2cb60820) at src/http/modules/ngx_http_headers_filter_module.c:208
value = {len = 134,
data = 0x7f9e2cb7aefb "pin-sha256=\"sggymnso4MC+EGK/CjpEYzpHqNYgFoT+3AxbPG/06LM=\"; pin-sha256=\"qWRoFIB2OK8l7M4/nAKetrygsdoqgA5MgQpGKeKgVi0=\"; max-age=15768000"}
i = 1
safe_status = 1
h = 0x7f9e2cb7afb0
conf = 0x7f9e2cb7e378
#2 0x00007f9e2c51e11d in ngx_http_not_modified_header_filter (r=0x7f9e2cb60820) at src/http/modules/ngx_http_not_modified_filter_module.c:61
No locals.
#3 0x00007f9e2c4e0b3b in ngx_http_send_header (r=0x7f9e2cb60820) at src/http/ngx_http_core_module.c:1947
No locals.
#4 0x00007f9e2c50e6e4 in ngx_http_upstream_send_response (r=0x7f9e2cb60820, u=0x7f9e2cb65ce8) at src/http/ngx_http_upstream.c:2653
tcp_nodelay = 32670
n = 140317332341344
rc = 140317328430168
p = 0xc28
c = 0x7f9e2cc300a0
clcf = 0x7f9e2cbca4a8
#5 0x00007f9e2c50d53e in ngx_http_upstream_process_header (r=0x7f9e2cb60820, u=0x7f9e2cb65ce8) at src/http/ngx_http_upstream.c:2165
n = 3112
rc = 0
c = 0x7f9e2cbca4a8
#6 0x00007f9e2c50b7fd in ngx_http_upstream_handler (ev=0x7f9e2cc00260) at src/http/ngx_http_upstream.c:1095
c = 0x7f9e2cbca3d0
r = 0x7f9e2cb60820
u = 0x7f9e2cb65ce8
#7 0x00007f9e2c4c6d4a in ngx_event_process_posted (cycle=0x7f9e2cb46a20, posted=0x7f9e2c8517f0 <ngx_posted_events>) at src/event/ngx_event_posted.c:33
q = 0x7f9e2cc002b0
ev = 0x7f9e2cc00260
#8 0x00007f9e2c4c410d in ngx_process_events_and_timers (cycle=0x7f9e2cb46a20) at src/event/ngx_event.c:259
flags = 3
timer = 14400000
delta = 1
#9 0x00007f9e2c4d32ac in ngx_worker_process_cycle (cycle=0x7f9e2cb46a20, data=0x1) at src/os/unix/ngx_process_cycle.c:753
worker = 1
#10 0x00007f9e2c4cf231 in ngx_spawn_process (cycle=0x7f9e2cb46a20, proc=0x7f9e2c4d3192 <ngx_worker_process_cycle>, data=0x1,
name=0x7f9e2c590403 "worker process", respawn=-3) at src/os/unix/ngx_process.c:198
on = 1
pid = 0
s = 1
#11 0x00007f9e2c4d1dea in ngx_start_worker_processes (cycle=0x7f9e2cb46a20, n=2, type=-3) at src/os/unix/ngx_process_cycle.c:358
i = 1
ch = {command = 1, pid = 16375, slot = 0, fd = 3}
#12 0x00007f9e2c4d1337 in ngx_master_process_cycle (cycle=0x7f9e2cb46a20) at src/os/unix/ngx_process_cycle.c:130
title = 0x7f9e2cbbfc8c "master process /usr/sbin/nginx"
p = 0x7f9e2cbbfcaa ""
size = 31
i = 1
n = 0
sigio = 0
set = {__val = {0 <repeats 16 times>}}
itv = {it_interval = {tv_sec = 0, tv_usec = 0}, it_value = {tv_sec = 0, tv_usec = 0}}
live = 0
delay = 0
ls = 0x0
ccf = 0x7f9e2cb47b20
#13 0x00007f9e2c4947a5 in main (argc=1, argv=0x7ffec3c42b38) at src/core/nginx.c:415
b = 0x7f9e00000001
log = 0x7f9e2c84c7e0 <ngx_log>
i = 47
cycle = 0x7f9e2cb46a20
init_cycle = {conf_ctx = 0x0, pool = 0x7f9e2cb46530, log = 0x7f9e2c84c7e0 <ngx_log>, new_log = {log_level = 0, file = 0x0, connection = 0,
disk_full_time = 0, handler = 0x0, data = 0x0, writer = 0x0, wdata = 0x0, action = 0x0, next = 0x0}, log_use_stderr = 0, files = 0x0,
free_connections = 0x0, free_connection_n = 0, reusable_connections_queue = {prev = 0x0, next = 0x0}, listening = {elts = 0x0, nelts = 0,
size = 0, nalloc = 0, pool = 0x0}, paths = {elts = 0x0, nelts = 0, size = 0, nalloc = 0, pool = 0x0}, config_dump = {elts = 0x0, nelts = 0,
size = 0, nalloc = 0, pool = 0x0}, open_files = {last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool = 0x0},
shared_memory = {last = 0x0, part = {elts = 0x0, nelts = 0, next = 0x0}, size = 0, nalloc = 0, pool = 0x0}, connection_n = 0, files_n = 0,
connections = 0x0, read_events = 0x0, write_events = 0x0, old_cycle = 0x0, conf_file = {len = 21, data = 0x7f9e2c58c25e "/etc/nginx/nginx.conf"},
conf_param = {len = 0, data = 0x0}, conf_prefix = {len = 11, data = 0x7f9e2c58c25e "/etc/nginx/nginx.conf"}, prefix = {len = 17,
data = 0x7f9e2c58c24c "/usr/share/nginx/"}, lock_file = {len = 0, data = 0x0}, hostname = {len = 0, data = 0x0}}
cd = 0x7f9e2c46ded0
ccf = 0x7f9e2cb47b20
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