[Varnish] #169: Varnishd crashes with assert error in bes_ClosedFd
Varnish
varnish-bugs at projects.linpro.no
Tue Oct 9 19:58:12 CEST 2007
#169: Varnishd crashes with assert error in bes_ClosedFd
----------------------+-----------------------------------------------------
Reporter: anders | Owner: phk
Type: defect | Status: new
Priority: normal | Milestone:
Component: varnishd | Version: trunk
Severity: normal | Keywords:
----------------------+-----------------------------------------------------
I am running Varnish trunk (up to date to commit 2096) with vca_act set to
vca_acceptors[1] to use polling instead of kqueue, due to recent kqueue
problems discovered in ticket #162.
After some time, Varnish crashed:
{{{
Child said (2, 882): <<Assert error in bes_ClosedFd(),
cache_backend_simple.c line 282:
Condition((close(vc->fd)) == 0) not true.
errno = 57 (Invalid argument)
Assert error in bes_ClosedFd(), cache_backend_simple.c line 282:
Condition((close(vc->fd)) == 0) not true.
errno = 22 (Invalid argument)
}}}
My VCL:
{{{
backend default {
set backend.host = "192.168.0.3";
set backend.port = "80";
}
acl purge {
"192.168.0.4"/32;
}
sub vcl_recv {
if ((req.http.host ~ "^(cache.finn.no|finn.no|www.finn.no)$") ||
(req.http.host == "banner.finn.no" && req.url ~
"^/(jsp2|finn/gojsp|daily|board|auximg/papirfly|finn/cacheable|crossdomain.xml)"))
{
if (req.request == "GET" || req.request == "HEAD") {
lookup;
} elsif (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
lookup;
} else {
pipe;
}
} else {
error 403 "Access denied. Contact cacheadmin at finn.no if
you have problems.";
}
}
sub vcl_miss {
if (req.request == "PURGE") {
error 404 "Not in cache.";
} else {
fetch;
}
}
sub vcl_hit {
if (req.request == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
} else {
deliver;
}
}
sub vcl_fetch {
if (obj.ttl < 86400s) {
set obj.ttl = 604800s;
}
if (obj.http.Cookie) {
remove obj.http.Cookie;
}
if (obj.http.Set-Cookie) {
remove obj.http.Set-Cookie;
}
insert;
}
}}}
The backtrace:
{{{
Program received signal SIGABRT, Aborted.
[Switching to Thread 0xf02f400 (LWP 100556)]
0x0000000800c080dc in thr_kill () from /lib/libc.so.6
(gdb) bt
#0 0x0000000800c080dc in thr_kill () from /lib/libc.so.6
#1 0x000000080098d01c in raise () from /usr/lib/libthr.so.2
#2 0x0000000800c8716d in abort () from /lib/libc.so.6
#3 0x000000080066ab99 in lbv_assert (func=0x42ef79 "bes_ClosedFd",
file=0x42ed80 "cache_backend_simple.c", line=282,
cond=0x42efee "(close(vc->fd)) == 0", err=22) at assert.c:58
#4 0x000000000040d51e in bes_ClosedFd (w=0x7fffce071ae0, vc=0x51fa900)
at cache_backend_simple.c:282
#5 0x00000000004097a0 in VBE_ClosedFd (w=0x7fffce071ae0, vc=0x51fa900)
at cache_backend.c:291
#6 0x000000000041215c in Fetch (sp=0x24ce008) at cache_fetch.c:385
#7 0x000000000040e978 in cnt_fetch (sp=0x24ce008) at cache_center.c:301
#8 0x000000000040fc3e in CNT_Session (sp=0x24ce008) at steps.h:40
#9 0x0000000000417588 in wrk_do_one (w=0x7fffce071ae0) at
cache_pool.c:193
#10 0x0000000000417a48 in wrk_thread (priv=0x85b300) at cache_pool.c:245
#11 0x000000080098f55b in pthread_create () from /usr/lib/libthr.so.2
#12 0x0000000000000000 in ?? ()
Error accessing memory address 0x7fffce072000: Bad address.
(gdb) frame 4
#4 0x000000000040d51e in bes_ClosedFd (w=0x7fffce071ae0, vc=0x51fa900)
at cache_backend_simple.c:282
282 AZ(close(vc->fd));
(gdb) print vc->fd
$1 = 479
}}}
PS: This was while the FreeBSD kernel seemed to be in a bit frozen state,
with no/little response. Suddenly it loosened and I could log in. Then I
could see this error.
--
Ticket URL: <http://varnish.projects.linpro.no/ticket/169>
Varnish <http://varnish.projects.linpro.no/>
The Varnish HTTP Accelerator
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