nginx large POST body under Solaris

[Igor Sysoev]

On Tue, Mar 25, 2008 at 06:42:05PM -0400, Wil Tan wrote:

> Hello Igor,
> 
> Thank you for your quick response. I've installed gdb and enabled  
> global setuid core and reproduced the scenario for 0.6.29. Here's the  
> backtrace:
> 
> [moji at d9b60282 /opt/local/src]$ sudo gdb /opt/local/nginx/sbin/nginx / 
> var/core/core.nginx.12427
> GNU gdb 6.6
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and  
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> This GDB was configured as "i386-pc-solaris2.10"...
> Reading symbols from /lib/libsocket.so.1...done.
> Loaded symbols for /lib/libsocket.so.1
> Reading symbols from /lib/libnsl.so.1...done.
> Loaded symbols for /lib/libnsl.so.1
> Reading symbols from /lib/librt.so.1...
> warning: Lowest section in /lib/librt.so.1 is .dynamic at 00000074
> done.
> Loaded symbols for /lib/librt.so.1
> Reading symbols from /lib/libsendfile.so.1...done.
> Loaded symbols for /lib/libsendfile.so.1
> Reading symbols from /opt/local/lib/libpcre.so.0...done.
> Loaded symbols for /usr/local/lib/libpcre.so.0
> Reading symbols from /opt/local/lib/libz.so.1...done.
> Loaded symbols for /usr/local/lib/libz.so.1
> Reading symbols from /lib/libc.so.1...done.
> Loaded symbols for /lib/libc.so.1
> Reading symbols from /usr/sfw/lib/libgcc_s.so.1...done.
> Loaded symbols for /usr/sfw/lib/libgcc_s.so.1
> Reading symbols from /lib/ld.so.1...done.
> Loaded symbols for /lib/ld.so.1
> Core was generated by `/opt/local/nginx/sbin/nginx'.
> Program terminated with signal 11, Segmentation fault.
> #0  ngx_writev_chain (c=0x810e830, in=0x80d7d74, limit=2147479551)
>     at src/os/unix/ngx_writev_chain.c:92
> 92                      iov->iov_len += size;
> (gdb) where
> #0  ngx_writev_chain (c=0x810e830, in=0x80d7d74, limit=2147479551)
>     at src/os/unix/ngx_writev_chain.c:92

p iov
p *cl->buf
p prev_send
p send
p size


-- 
Igor Sysoev
http://sysoev.ru/en/