# 1.4.1 + spdy + centos 6 + openssl-1.0.1e (static), firefox 21 ajax requests ssl spdy = segfault **URL:** \ **Category:** NGINX\ **Created:** [May 19, 2013, 6:44pm UTC](https://www.ruby-forum.com/t/1-4-1-spdy-centos-6-openssl-1-0-1e-static-firefox-21-ajax-requests-ssl-spdy-segfault/234933 "2013-05-19T18:44:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [May 19, 2013, 6:44pm UTC](https://www.ruby-forum.com/t/1-4-1-spdy-centos-6-openssl-1-0-1e-static-firefox-21-ajax-requests-ssl-spdy-segfault/234933/1 "2013-05-19T18:44:06Z")
Hello, on one of my servers, nginx suddenly started crashing on some AJAX-heavy pages when accessed via SSL+SPDY. It seems to happen only when Firefox is the client (tested with Firefox 21), latest version of chrome uses SPDY without crashing. uname -a: Linux [myserver.com](http://myserver.com) 2.6.32-358.6.2.el6.x86\_64 #1 SMP Thu May 16 20:59:36 UTC 2013 x86\_64 x86\_64 x86\_64 GNU/Linux nginx compile flags: CFLAGS=“-g -O0” ./configure –with-pcre=/usr/local/src/nginx-1.4.1/pcre-8.32 –sbin-path=/usr/local/sbin --conf-path=/etc/nginx/nginx.conf –pid-path=/var/run/nginx.pid --error-log-path=/var/log/nginx/error.log –http-log-path=/var/log/nginx/access.log --with-http\_realip\_module –with-http\_ssl\_module –with-openssl=/usr/local/src/nginx-1.4.1/openssl-1.0.1e –with-http\_spdy\_module --http-client-body-temp-path=/tmp/nginx\_client –http-proxy-temp-path=/tmp/nginx\_proxy –http-fastcgi-temp-path=/tmp/nginx\_fastcgi –with-http\_stub\_status\_module –with-debug nginx log when crash happens: 2013/05/19 18:05:58 [notice] 26737#0: start worker process 26899 2013/05/19 18:05:58 [notice] 26737#0: signal 29 (SIGIO) received 2013/05/19 18:05:59 [notice] 26737#0: signal 17 (SIGCHLD) received 2013/05/19 18:05:59 [alert] 26737#0: worker process 26897 exited on signal 11 (core dumped) 2013/05/19 18:05:59 [notice] 26737#0: start worker process 26907 2013/05/19 18:05:59 [notice] 26737#0: signal 29 (SIGIO) received 2013/05/19 18:06:00 [notice] 26737#0: signal 17 (SIGCHLD) received 2013/05/19 18:06:00 [alert] 26737#0: worker process 26899 exited on signal 11 (core dumped) 2013/05/19 18:06:00 [notice] 26737#0: start worker process 26909 2013/05/19 18:06:00 [notice] 26737#0: signal 29 (SIGIO) received nginx.conf > **[nginx conf - Pastebin.com](https://pastebin.com/G9wAgyeh)** > > Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time. gdb backtrace: # gdb /usr/local/sbin/nginx core.26899 … snip gpl stuff … Reading symbols from /usr/local/sbin/nginx…done. [New Thread 26899] Missing separate debuginfo for Try: yum --disablerepo=‘_’ --enablerepo='_-debug\*’ install /usr/lib/debug/.build-id/50/fc20fea18a6f375789f0f86e28f463d50714fd Reading symbols from /lib64/libpthread.so.0…(no debugging symbols found)…done. [Thread debugging using libthread\_db enabled] Loaded symbols for /lib64/libpthread.so.0 Reading symbols from /lib64/libcrypt.so.1…(no debugging symbols found)…done. Loaded symbols for /lib64/libcrypt.so.1 Reading symbols from /lib64/libdl.so.2…(no debugging symbols found)…done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/libz.so.1…(no debugging symbols found)…done. Loaded symbols for /lib64/libz.so.1 Reading symbols from /lib64/libc.so.6…(no debugging symbols found)…done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2…(no debugging symbols found)…done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib64/libfreebl3.so…(no debugging symbols found)…done. Loaded symbols for /lib64/libfreebl3.so Reading symbols from /lib64/libnss\_files.so.2…(no debugging symbols found)…done. Loaded symbols for /lib64/libnss\_files.so.2 Core was generated by `nginx: worker process '. Program terminated with signal 11, Segmentation fault. #0 0x0000003455283c56 in \_\_memset\_sse2 () from /lib64/libc.so.6 Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.x86\_64 nss-softokn-freebl-3.12.9-11.el6.x86\_64 zlib-1.2.3-29.el6.x86\_64 (gdb) bt #0 0x0000003455283c56 in \_\_memset\_sse2 () from /lib64/libc.so.6 #1 0x0000000000493a67 in ngx\_http\_spdy\_state\_data (sc=0x3035ba0, pos=0x37c78f8 “”, end=0x37c78f8 “”) at src/http/ngx\_http\_spdy.c:1193 #2 0x0000000000492673 in ngx\_http\_spdy\_state\_head (sc=0x3035ba0, pos=0x37c78f8 “”, end=0x37c78f8 “”) at src/http/ngx\_http\_spdy.c:699 #3 0x00000000004919e2 in ngx\_http\_spdy\_read\_handler (rev=0x7f0318ffe3b8) at src/http/ngx\_http\_spdy.c:364 #4 0x000000000042ac31 in ngx\_event\_process\_posted (cycle=0x2893a30, posted=0x8d1b68) at src/event/ngx\_event\_posted.c:40 #5 0x000000000042887c in ngx\_process\_events\_and\_timers (cycle=0x2893a30) at src/event/ngx\_event.c:276 #6 0x0000000000435ebd in ngx\_worker\_process\_cycle (cycle=0x2893a30, data=0x1) at src/os/unix/ngx\_process\_cycle.c:807 #7 0x00000000004327ca in ngx\_spawn\_process (cycle=0x2893a30, proc=0x435cf7 \, data=0x1, name=0x609c9b “worker process”, respawn=1) at src/os/unix/ngx\_process.c:198 #8 0x0000000000435906 in ngx\_reap\_children (cycle=0x2893a30) at src/os/unix/ngx\_process\_cycle.c:619 #9 0x00000000004345ed in ngx\_master\_process\_cycle (cycle=0x2893a30) at src/os/unix/ngx\_process\_cycle.c:180 #10 0x00000000004041b6 in main (argc=3, argv=0x7fffb6c2dbd8) at src/core/nginx.c:412 Server has a Core i3 540 with HT, OS is 64-bit CentOS 6 fully patched (as of date of this message). - kernel log when error occurred: May 19 18:06:00 saruman kernel: nginx[26899]: segfault at 0 ip 0000003455283c56 sp 00007fffb6c2d498 error 6 in libc-2.12.so[3455200000+18a000] The crash is highly reproducible and when it crashes the ip and sp parameters and offsets are always the same. I hope I’ve posted enough info for devs to fix this, sorry for the long message. Posted at Nginx Forum: > **[\[nginx\] 1.4.1 + spdy + centos 6 + openssl-1.0.1e (static), firefox 21 ajax...](https://forum.nginx.org/read.php?2,239327,239327#msg-239327)** > > Hello, on one of my servers, nginx suddenly started crashing on some AJAX-heavy pages when accessed via SSL+SPDY. It seems to happen only when Firefox is the client (tested with Firefox 21), latest version of chrome uses SPDY without crashing. uname... ---
**Author:** ![epsilon2930](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/919ad9/32.png) [@epsilon2930](https://www.ruby-forum.com/u/epsilon2930)\ **Post date:** [May 20, 2013, 3:21am UTC](https://www.ruby-forum.com/t/1-4-1-spdy-centos-6-openssl-1-0-1e-static-firefox-21-ajax-requests-ssl-spdy-segfault/234933/2 "2013-05-20T03:21:11Z")
For closure: I took this to the bug tracker and a patch was posted that resolves this issue: [http://trac.nginx.org/nginx/ticket/357](http://trac.nginx.org/nginx/ticket/357) Apologies for newsletter spam. Posted at Nginx Forum: > **[Re: \[nginx\] 1.4.1 + spdy + centos 6 + openssl-1.0.1e (static), firefox 21...](https://forum.nginx.org/read.php?2,239327,239331#msg-239331)** > > Hello, on one of my servers, nginx suddenly started crashing on some AJAX-heavy pages when accessed via SSL+SPDY. It seems to happen only when Firefox is the client (tested with Firefox 21), latest version of chrome uses SPDY without crashing. uname...