Nginx 0.4.9 crashes using /dev/poll on Solaris 10 on Sparc

[Igor Sysoev]

On Fri, 20 Oct 2006, Per Jonsson wrote:

> On Fri, Oct 20, 2006 at 06:12:53PM +0400, Igor Sysoev wrote:
>> When you get segfault ? Just when run nginx or some conditions are needed ?
>> Could you use gdb ?
>
> We're getting it during what we believe is normal operation, but not all the
> time. I haven't been able to find any certain conditions that give us the
> segfault. The nice thing though is that nginx recovers in a good way, but
> it's hard to transfer bigger files from the backend webservers running behind
> nginx.
>
> Some times when can run for a couple of minutes without segfaults, but then get
> segfaults perhaps once a minute or more often.
>
> I've managed to wrangle up a gdb, and the error is happening as per my earlier
> diagnosis.
>
> The problem seems to be that ngx_cycle->files seems to contain null-pointers,
> and that the check for c->fd == -1 is not preceeded with a check for c == 0.
>
> Please tell me if you need more info.

If you are able to easy reproduce segfault, then could you build nginx
with debug logging:
./configure --with-debug ...
and enable debug logging:
error_log  /path/to/log  debug;
then send the log to me.


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