[Varnish] #812: crash in HSH_Purge
Varnish
varnish-bugs at varnish-cache.org
Wed Nov 10 10:29:32 CET 2010
#812: crash in HSH_Purge
----------------------+-----------------------------------------------------
Reporter: sky | Owner: phk
Type: defect | Status: new
Priority: normal | Milestone:
Component: varnishd | Version: trunk
Severity: major | Keywords:
----------------------+-----------------------------------------------------
When calling VRT_purge with 0 ttl and 0 grace from vcl_miss sometimes we
crash under heavy load.
{{{
sub vcl_recv {
if(req.request == "PURGE") {
set req.hash_ignore_busy = true;
}
set req.grace = 3600s;
return(lookup);
}
}
sub vcl_miss {
if (req.request == "PURGE") {
C{ VRT_purge(sp, 0, 0); }C
error 200 "Ok";
}
}}}
{{{
hild (30735) died signal=6
Nov 10 04:31:02 varnish-s1 varnishd[2831]: Child (30735) Panic message:
Assert error in HSH_Purge(), cache_hash.c line 539:
Condition((oc)->magic == 0x4d301302) not true.
errno = 11 (Resource temporarily unavailable) thread = (cache-worker)
ident = Linux,2.6.35.3-intel-
novirt,x86_64,-sfile,-sfile,-sfile,-hclassic,epoll
Backtrace: 0x426188: /usr/sbin/varnishd [0x426188]
0x41f42a: /usr/sbin/varnishd(HSH_Purge+0x22a) [0x41f42a]
0x7f4cb526a577: ./vcl.iQQD1J50.so [0x7f4cb526a577]
0x42b083: /usr/sbin/varnishd(VCL_miss_method+0x43) [0x42b083]
0x413adc: /usr/sbin/varnishd [0x413adc]
0x415cb5: /usr/sbin/varnishd(CNT_Session+0x3a5) [0x415cb5]
0x427938: /usr/sbin/varnishd [0x427938]
0x427d0b: /usr/sbin/varnishd [0x427d0b]
0x7f7adeff5a04: /lib/libpthread.so.0 [0x7f7adeff5a04]
0x7f7ade8c0d4d: /lib/libc.so.6(clone+0x6d) [0x7f7ade8c0d4d]
sp = 0x7f4c93902008 { fd = 41,
id = 41,
xid = 217661109,
client = 127.0.0.1 48959,
step = STP_MISS,
handling = deliver,
err_code = 200,
err_reason = Ok,
restarts = 0,
esis = 0
ws = 0x7f4c93902080 { id = "sess",
{s,f,r,e} = {0x7f4c93902cd8,+600,(nil),+131072}, },
http[req] = {
ws = 0x7f4c93902080[sess] "PURGE",
"/index.php?title=Par_Vollen",
"HTTP/1.1",
"TE: deflate,gzip;q=0.3",
"Connection: TE",
"Host: dragonage.wikia.com",
"User-Agent: HTCP Purger",
"X-Logged-In: 0",
"X-Timer: S1289363459.012102365,VS0",
"X-Forwarded-From: varnish-s1-SJC",
"X-Forwarded-For: 127.0.0.1",
"X-Origurl: /wiki/Par_Vollen",
"X-Transformed-URL: 1",
"X-Set-Vary-URL: 1", },
worker = 0x7f48190f9e20 { ws = 0x7f48190f9fa0 { id = "wrk",
{s,f,r,e} = {0x7f48190d1dc0,+24,+131072,+131072}, },
}}}
--
Ticket URL: <http://www.varnish-cache.org/trac/ticket/812>
Varnish <http://varnish-cache.org/>
The Varnish HTTP Accelerator
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