Re: nginx изредка падает при проксировании с резолвером

[Igor Sysoev <is@xxxxxxxxxxxxx>]

On Fri, May 01, 2009 at 04:24:45PM +0300, Alex Vorona wrote:

> 01.05.2009 15:47, Igor Sysoev wrote:
> >On Fri, May 01, 2009 at 03:42:52PM +0300, Alex Vorona wrote:
> >
> >>Со следующим бэктрейсом
> >>(gdb) bt
> >>#0  0x2e737265 in ?? ()
> >>#1  0x0805f1f6 in ngx_resolver_process_a (r=0x80e2080, buf=0x7f7fdbd0 
> >>"С\030\201\202", last=37, ident=62232, code=2, nan=0, ans=37)
> >>    at src/core/ngx_resolver.c:1143
> >>#2  0x0805ef69 in ngx_resolver_process_response (r=0x80e2080, 
> >>buf=0x7f7fdbd0 "С\030\201\202", n=37) at src/core/ngx_resolver.c:1049
> >>#3  0x0805ec67 in ngx_resolver_read_response (rev=0x824299c) at 
> >>src/core/ngx_resolver.c:953
> >>#4  0x0806eddb in ngx_kqueue_process_events (cycle=0x80d5020, timer=500, 
> >>flags=1) at src/event/modules/ngx_kqueue_module.c:689
> >
> >p *r
> >
> >
> (gdb) up
> #1  0x0805f1f6 in ngx_resolver_process_a (r=0x80e2080, buf=0x7f7fdbd0 
> "С\030\201\202", last=37, ident=62232, code=2, nan=0, ans=37)
>     at src/core/ngx_resolver.c:1143
> 1143                 ctx->handler(ctx);
> (gdb) p *r
> $1 = {event = 0x80df200, udp_connection = 0x80d1020, log = 0x80d531c, ident 
> = -1, name_rbtree = {root = 0x80df2c0, sentinel = 0x80e209c,
>     insert = 0x805ff9c <ngx_resolver_rbtree_insert_value>}, name_sentinel = 
>     {key = 0, left = 0x0, right = 0x0, parent = 0x80df2c0, color = 0 '\0',
>     data = 0 '\0'}, addr_rbtree = {root = 0x80e20bc, sentinel = 0x80e20bc, 
>     insert = 0x8054130 <ngx_rbtree_insert_value>}, addr_sentinel = {key = 0,
>     left = 0x0, right = 0x0, parent = 0x0, color = 0 '\0', data = 0 '\0'}, 
> name_resend_queue = {prev = 0x80e20d0, next = 0x80e20d0}, addr_resend_queue 
> = {
>     prev = 0x80e20d8, next = 0x80e20d8}, name_expire_queue = {prev = 
>     0x80df2d4, next = 0x80df3d4}, addr_expire_queue = {prev = 0x80e20e8, next 
> = 
> 0x80e20e8},
>   resend_timeout = 5, expire = 30, valid = 300, log_level = 2}

p *ctx



-- 
Игорь Сысоев
http://sysoev.ru