Re: nginx 0.7.62/0.8.20 ssl and "worker process ... exited on signal 11"

[Maxim Dounin <mdounin@xxxxxxxxxx>]

Hello!

On Fri, Oct 23, 2009 at 11:52:03AM +0400, Andrey Y. Ostanovsky wrote:

> Maxim Dounin пишет:
> > Либо это совсем плохой, негодный стек, либо gdb запускали не с тем 
> > бинарником.
> >
> > Я склоняюсь ко второму варианту - адреса переменных вполне похожи 
> > на правду, между тем как имена функций и файлы/строки - абсолютно 
> > левые
> 
> Точно! Не с той коркой. Прошу прощения. Вот более правильный вариант:
> 
> # gdb /usr/local/sbin/nginx-0.8.20 /var/tmp/80.nginx-0.8.20.core
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i386-marcel-freebsd"...
> Core was generated by `nginx-0.8.20'.
> Program terminated with signal 11, Segmentation fault.
> Reading symbols from /lib/libcrypt.so.4...done.
> Loaded symbols for /lib/libcrypt.so.4
> Reading symbols from /usr/local/lib/libpcre.so.0...done.
> Loaded symbols for /usr/local/lib/libpcre.so.0
> Reading symbols from /usr/lib/libssl.so.5...done.
> Loaded symbols for /usr/lib/libssl.so.5
> Reading symbols from /lib/libcrypto.so.5...done.
> Loaded symbols for /lib/libcrypto.so.5
> Reading symbols from /lib/libz.so.4...done.
> Loaded symbols for /lib/libz.so.4
> Reading symbols from /lib/libc.so.7...done.
> Loaded symbols for /lib/libc.so.7
> Reading symbols from /libexec/ld-elf.so.1...done.
> Loaded symbols for /libexec/ld-elf.so.1
> #0  0x283e18a3 in memcpy () from /lib/libc.so.7
> (gdb) bt
> #0  0x283e18a3 in memcpy () from /lib/libc.so.7
> #1  0x08077ad1 in ngx_ssl_send_chain (c=0x28567258, in=0x285d9f9c,
> limit=2012)
>     at src/event/ngx_event_openssl.c:973

fr 1
p *buf
p *in
p *in->buf
p size

Ну и чтобы два раза не вставать:

p *c
p *c->ssl

Maxim Dounin

> #2  0x0808fbe0 in ngx_http_write_filter (r=0x2855c000, in=0x0)
>     at src/http/ngx_http_write_filter_module.c:238
> #3  0x080a5a76 in ngx_http_chunked_body_filter (r=0x2855c000, in=0x0)
>     at src/http/modules/ngx_http_chunked_filter_module.c:84
> #4  0x080ad0e5 in ngx_http_gzip_body_filter (r=0x2855c000, in=0x0)
>     at src/http/modules/ngx_http_gzip_filter_module.c:304
> #5  0x080aeb0b in ngx_http_postpone_filter (r=0x2855c000, in=0x0)
>     at src/http/ngx_http_postpone_filter_module.c:82
> #6  0x080af7c3 in ngx_http_charset_body_filter (r=0x2855c000, in=0x0)
>     at src/http/modules/ngx_http_charset_filter_module.c:552
> #7  0x080b1ce5 in ngx_http_ssi_body_filter (r=0x2855c000, in=0x0)
>     at src/http/modules/ngx_http_ssi_filter_module.c:395
> #8  0x08050dfe in ngx_output_chain (ctx=0x285de204, in=0x0) at
> src/core/ngx_output_chain.c:56
> #9  0x0809029d in ngx_http_copy_filter (r=0x2855c000, in=0x0)
>     at src/http/ngx_http_copy_filter_module.c:137
> #10 0x080a6d21 in ngx_http_range_body_filter (r=0x2855c000, in=0x0)
>     at src/http/modules/ngx_http_range_filter_module.c:549
> #11 0x0807f635 in ngx_http_output_filter (r=0x2855c000, in=0x0)
>     at src/http/ngx_http_core_module.c:1729
> #12 0x0808a3c5 in ngx_http_writer (r=0x2855c000) at
> src/http/ngx_http_request.c:2211
> #13 0x08089588 in ngx_http_request_handler (ev=0x2863d168) at
> src/http/ngx_http_request.c:1779
> #14 0x08068f33 in ngx_event_expire_timers () at
> src/event/ngx_event_timer.c:149
> #15 0x08067246 in ngx_process_events_and_timers (cycle=0x28526028) at
> src/event/ngx_event.c:261
> #16 0x080722e2 in ngx_worker_process_cycle (cycle=0x28526028, data=0x0)
>     at src/os/unix/ngx_process_cycle.c:781
> #17 0x0806fa9a in ngx_spawn_process (cycle=0x28526028, proc=0x80721a0
> <ngx_worker_process_cycle>,
>     data=0x0, name=0x80d355c "worker process", respawn=1) at
> src/os/unix/ngx_process.c:196
> #18 0x08071ea8 in ngx_reap_children (cycle=0x28526028) at
> src/os/unix/ngx_process_cycle.c:602
> #19 0x08070f3b in ngx_master_process_cycle (cycle=0x28526028)
>     at src/os/unix/ngx_process_cycle.c:177
> #20 0x0804be2e in main (argc=5, argv=0xbfbfeed0) at src/core/nginx.c:392
> (gdb)
> 
> -- 
> Best regards, Andrey Y. Ostanovsky
> jabberID: aost@xxxxxxxxxxxxx
> St. Petersburg, Russia 
> 
>