Bumping this with another backtrace. Happened at 16:05 this time, when the system was not very very busy.
It’s causing squid to crash in such a way that I actually have to `kill -9` the process in order to get things restarted properly.
Would really appreciate any feedback at all from anyone who can understand these back traces.
On Thu, Nov 6, 2014 at 9:56 AM, Dan Charlesworth <dan@xxxxxxxxxxx> wrote:
Terribly sorry, but I only attached half the traceback before. I've attached two *full* tracebacks this time; one from today and one from yesterday.This is from a forward proxy at a school, where this crash happens exactly once per day between 9:00 and 9:30.On 5 November 2014 11:42, <dan@xxxxxxxxxxx> wrote:Hi folksI think I raised this crash a few months ago, but I can’t locate the thread now, so I’m starting a new one now that I actually have a gdb backtrace to present.I suspect it’s to do with one of our external ACLs (we use a few), but the backtrace I’ve attached is most undecipherable for me—hopefully someone else here can understand it.Thanks as always<squid-assertion-failed-gdb-bt.txt> <squid-assertion-failed-gdb-bt-2.txt>
#0 0x0000003f28832625 in raise () from /lib64/libc.so.6
No symbol table info available.
#1 0x0000003f28833e05 in abort () from /lib64/libc.so.6
No symbol table info available.
#2 0x000000000056525f in xassert (msg=0x80ba03 "connIsUsable(http->getConn())", file=0x80a8f0 "client_side.cc", line=1515) at debug.cc:566
__FUNCTION__ = "xassert"
#3 0x000000000053de3f in clientSocketRecipient (node=0x75519378, http=0x755191d8, rep=0x8492ad10, receivedData=...) at client_side.cc:1515
context = {p_ = 0x78ba2f48}
mustSendLastChunk = <value optimized out>
#4 0x0000000000545d77 in clientReplyContext::processReplyAccessResult (this=0x78ba3ff8, accessAllowed=<value optimized out>) at client_side_reply.cc:2058
__FUNCTION__ = "processReplyAccessResult"
localTempBuffer = {flags = {error = <value optimized out>}, length = 0, offset = <value optimized out>, data = 0x78ba2ffc ""}
buf = 0x78ba2f68 "HTTP/1.1 404 Not Found\r\nServer: nginx\r\nDate: Thu, 06 Nov 2014 05:05:31 GMT\r\nContent-Type: text/html\r\nContent-Length: 162\r\nConnection: keep-alive\r\n\r\n"
body_buf = <value optimized out>
body_size = <value optimized out>
#5 0x00000000005461b3 in clientReplyContext::ProcessReplyAccessResult (rv=..., voidMe=<value optimized out>) at client_side_reply.cc:1961
me = <value optimized out>
#6 0x00000000006ea36b in ACLChecklist::checkCallback (this=0x74d9f948, answer=<value optimized out>) at Checklist.cc:161
callback_ = 0x5461a0 <clientReplyContext::ProcessReplyAccessResult(allow_t, void*)>
cbdata_ = 0x78ba3ff8
__FUNCTION__ = "checkCallback"
#7 0x000000000058a779 in externalAclHandleReply (data=<value optimized out>, reply=<value optimized out>) at external_acl.cc:1422
cbdata = 0x74d9f948
state = 0x74f4fe38
__FUNCTION__ = "externalAclHandleReply"
next = <value optimized out>
entryData = {result = {code = ACCESS_DENIED, kind = 0}, notes = {<Lock> = {_vptr.Lock = 0xaeaa80, count_ = 0}, _vptr.NotePairs = 0xaeaa58, entries = {capacity = 16,
count = 1, items = 0x841b2fc0}}, user = {static npos = 18446744073709551615, size_ = 0, len_ = 0, buf_ = 0x0}, password = {static npos = 18446744073709551615,
size_ = 0, len_ = 0, buf_ = 0x0}, message = {static npos = 18446744073709551615, size_ = 0, len_ = 0, buf_ = 0x0}, tag = {static npos = 18446744073709551615,
size_ = 0, len_ = 0, buf_ = 0x0}, log = {static npos = 18446744073709551615, size_ = 512, len_ = 148,
buf_ = 0x84908450 "{\"deny_list\":0,\"deny_set\":2,\"categories\":\"[253]\",\"policy_group_id\":\"6\",\"user\":\"17deastb\",\"user_group\":\"stu2017\",\"deny_type\":\"filesize\",\"set_id\":\"2\"}"}}
entry = 0x84901ef8
label = <value optimized out>
#8 0x00000000005bb63a in helperReturnBuffer (conn=<value optimized out>, buf=<value optimized out>, len=<value optimized out>, flag=<value optimized out>,
xerrno=<value optimized out>, data=0x17aad28) at helper.cc:858
response = {result = HelperReply::Error, notes = {<Lock> = {_vptr.Lock = 0xaeaa80, count_ = 0}, _vptr.NotePairs = 0xaeaa58, entries = {capacity = 16, count = 1,
items = 0x841c6310}}, whichServer = {cbc = 0x0, lock = 0x0}, other_ = {buf = 0x71206040 "", size = 0, max_capacity = 247, capacity = 2048, stolen = 0,
static CBDATA_MemBuf = 14}}
callback = 0x58a500 <externalAclHandleReply(void*, HelperReply const&)>
cbdata = 0x74f4fe38
r = 0x76def130
#9 helperHandleRead (conn=<value optimized out>, buf=<value optimized out>, len=<value optimized out>, flag=<value optimized out>, xerrno=<value optimized out>,
data=0x17aad28) at helper.cc:951
msg = 0x17aaee0 "ERR log=%7B%22deny_list%22%3A0%2C%22deny_set%22%3A2%2C%22categories%22%3A%22%5B253%5D%22%2C%22policy_group_id%22%3A%226%22%2C%22user%22%3A%2217deastb%22%2C%22user_group%22%3A%22stu2017%22%2C%22deny_ty"...
i = 5809408
skip = 1
---Type <return> to continue, or q <return> to quit---
t = 0x17aafda ""
srv = 0x17aad28
hlp = 0x17aab28
__FUNCTION__ = "helperHandleRead"
#10 0x00000000006ed746 in AsyncCall::make (this=0x849199d0) at AsyncCall.cc:32
__FUNCTION__ = "make"
#11 0x00000000006f0802 in AsyncCallQueue::fireNext (this=<value optimized out>) at AsyncCallQueue.cc:52
call = {p_ = 0x849199d0}
__FUNCTION__ = "fireNext"
#12 0x00000000006f0b50 in AsyncCallQueue::fire (this=0x16797b0) at AsyncCallQueue.cc:38
made = true
#13 0x00000000005845a4 in EventLoop::runOnce (this=0x7fffb7879640) at EventLoop.cc:135
sawActivity = <value optimized out>
waitingEngine = 0x7fffb78796c0
__FUNCTION__ = "runOnce"
#14 0x00000000005846f8 in EventLoop::run (this=0x7fffb7879640) at EventLoop.cc:99
No locals.
#15 0x0000000000602928 in SquidMain (argc=<value optimized out>, argv=0x7fffb7879838) at main.cc:1528
WIN32_init_err = 0
__FUNCTION__ = "SquidMain"
signalEngine = {<AsyncEngine> = {_vptr.AsyncEngine = 0xaea790}, loop = @0x7fffb7879640}
store_engine = {<AsyncEngine> = {_vptr.AsyncEngine = 0xaea7f0}, <No data fields>}
comm_engine = {<AsyncEngine> = {_vptr.AsyncEngine = 0xaf23b0}, <No data fields>}
mainLoop = {errcount = 0, last_loop = false, engines = {capacity = 16, count = 4, items = 0x1c22930}, timeService = 0x7fffb78796b0, primaryEngine = 0x7fffb78796c0,
loop_delay = 0, error = false, runOnceResult = false}
time_engine = {_vptr.TimeEngine = 0xaecb90}
#16 0x00000000006032b8 in SquidMainSafe (argc=<value optimized out>, argv=<value optimized out>) at main.cc:1260
No locals.
#17 main (argc=<value optimized out>, argv=<value optimized out>) at main.cc:1252
No locals.
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