id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
299	Connect Peer Segmentation Fault	Yasar Semih Alev		"Dear All,

This week we received a lot of segmentation fault. I debugged and you can see below my gdb examine.

#0  0x000000000042dc5b in ngx_event_connect_peer (pc=0x8551b43f0) at src/event/ngx_event_connect.c:30
30	    s = ngx_socket(pc->sockaddr->sa_family, SOCK_STREAM, 0);

(gdb) bt
#0  0x000000000042dc5b in ngx_event_connect_peer (pc=0x8551b43f0) at src/event/ngx_event_connect.c:30
#1  0x000000000045ce2d in ngx_http_upstream_connect (r=0x801ffd050, u=0x8551b43e0) at src/http/ngx_http_upstream.c:1135
#2  0x000000000045eb1d in ngx_http_upstream_init_request (r=0x801ffd050) at src/http/ngx_http_upstream.c:660
#3  0x0000000000453065 in ngx_http_read_client_request_body (r=0x801ffd050, post_handler=0x45ef90 <ngx_http_upstream_init>) at src/http/ngx_http_request_body.c:159
#4  0x00000000004846a7 in ngx_http_proxy_handler (r=0x801ffd050) at src/http/modules/ngx_http_proxy_module.c:703
#5  0x0000000000444edc in ngx_http_core_content_phase (r=0x801ffd050, ph=0x8020df068) at src/http/ngx_http_core_module.c:1411
#6  0x000000000043f82d in ngx_http_core_run_phases (r=0x801ffd050) at src/http/ngx_http_core_module.c:891
#7  0x000000000044a949 in ngx_http_process_request (r=0x801ffd050) at src/http/ngx_http_request.c:1678
#8  0x000000000044b88e in ngx_http_process_request_line (rev=0x802a0ddf0) at src/http/ngx_http_request.c:915
#9  0x000000000042ca34 in ngx_event_process_posted (cycle=0x801632050, posted=0x6227b0) at src/event/ngx_event_posted.c:40
#10 0x0000000000433a46 in ngx_worker_process_cycle (cycle=0x801632050, data=Variable ""data"" is not available.
) at src/os/unix/ngx_process_cycle.c:807
#11 0x000000000043237c in ngx_spawn_process (cycle=0x801632050, proc=0x433980 <ngx_worker_process_cycle>, data=0x11, name=0x4dc7bc ""worker process"", respawn=51) at src/os/unix/ngx_process.c:198
#12 0x0000000000434a16 in ngx_master_process_cycle (cycle=0x801632050) at src/os/unix/ngx_process_cycle.c:619
#13 0x00000000004164de in main (argc=Variable ""argc"" is not available.
) at src/core/nginx.c:412

(gdb) p pc->sockaddr
$1 = (struct sockaddr *) 0x0

I think peer connection sockaddr is null.

Thanks.

Kind Regards,,"	defect	closed	critical		nginx-core	1.3.x	worksforme			FreeBSD dev.local 8.2-RELEASE-p9 FreeBSD 8.2-RELEASE-p9 #0: Mon Jun 11 23:00:11 UTC 2012     root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64	"nginx version: nginx/1.3.10
built by gcc 4.2.1 20070719  [FreeBSD]
TLS SNI support enabled
configure arguments: --user=nginx --group=nginx --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --pid-path=/var/run/nginx.pid --lock-path=/var/lock/subsys/nginx --with-http_secure_link_module --with-http_random_index_module --with-http_ssl_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gzip_static_module --with-http_stub_status_module --with-http_geoip_module --with-http_spdy_module --with-mail --with-debug --with-mail_ssl_module --with-file-aio --with-http_secure_link_module --with-cc-opt='-O2 -g -m64 -mtune=generic' --add-module=ngx_http_bytes_filter_module --add-module=ngx_udplog_module --add-module=ngx_cache_purge --add-module=ngx_upstream_check_module --add-module=ngx_fluentd_module --add-module=ngx_lua_module --add-module=ngx_devel_kit"