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https://issues.apache.org/jira/browse/TS-4915?focusedWorklogId=30561&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-30561
]
ASF GitHub Bot logged work on TS-4915:
--------------------------------------
Author: ASF GitHub Bot
Created on: 13/Oct/16 02:19
Start Date: 13/Oct/16 02:19
Worklog Time Spent: 10m
Work Description: Github user bryancall commented on the issue:
https://github.com/apache/trafficserver/pull/1088
I have been running this in production without an issue. However, I still
have a comment in the code about the !empt() conditional and the bubble_up
function call.
Issue Time Tracking
-------------------
Worklog Id: (was: 30561)
Time Spent: 5.5h (was: 5h 20m)
> Crash from hostdb in PriorityQueueLess
> --------------------------------------
>
> Key: TS-4915
> URL: https://issues.apache.org/jira/browse/TS-4915
> Project: Traffic Server
> Issue Type: Bug
> Components: HostDB
> Reporter: Susan Hinrichs
> Priority: Blocker
> Fix For: 7.1.0
>
> Attachments: ts-4915.diff, ts-4915.diff
>
> Time Spent: 5.5h
> Remaining Estimate: 0h
>
> Saw this while testing fix for TS-4813 with debug enabled.
> {code}
> (gdb) bt full
> #0 0x0000000000547bfe in RefCountCacheHashEntry::operator< (this=0x1cc0880,
> v2=...) at ../iocore/hostdb/P_RefCountCache.h:94
> No locals.
> #1 0x000000000054988d in
> PriorityQueueLess<RefCountCacheHashEntry*>::operator() (this=0x2b78a9a2587b,
> a=@0x2b78f402af68, b=@0x2b78f402aa28)
> at ../lib/ts/PriorityQueue.h:41
> No locals.
> #2 0x0000000000549785 in PriorityQueue<RefCountCacheHashEntry*,
> PriorityQueueLess<RefCountCacheHashEntry*> >::_bubble_up (this=0x1cb2990,
> index=2) at ../lib/ts/PriorityQueue.h:191
> comp = {<No data fields>}
> parent = 0
> #3 0x00000000006ecfcc in PriorityQueue<RefCountCacheHashEntry*,
> PriorityQueueLess<RefCountCacheHashEntry*> >::push (this=0x1cb2990,
> entry=0x2b78f402af60) at ../../lib/ts/PriorityQueue.h:91
> len = 2
> #4 0x00000000006ec206 in RefCountCachePartition<HostDBInfo>::put
> (this=0x1cb2900, key=6912554662447498853, item=0x2b78aee04f00, size=96,
> expire_time=1475202356) at ./P_RefCountCache.h:210
> expiry_entry = 0x2b78f402af60
> __func__ = "put"
> val = 0x1cc0880
> #5 0x00000000006eb3de in RefCountCache<HostDBInfo>::put (this=0x18051e0,
> key=6912554662447498853, item=0x2b78aee04f00, size=16,
> expiry_time=1475202356) at ./P_RefCountCache.h:462
> No locals.
> #6 0x00000000006e2d8e in HostDBContinuation::dnsEvent (this=0x2b7938020f00,
> event=600, e=0x2b78ac009440) at HostDB.cc:1422
> is_rr = false
> old_rr_data = 0x0
> first_record = 0x2b78ac0094f8
> m = 0x1
> failed = false
> old_r = {m_ptr = 0x0}
> af = 2 '\002'
> s_size = 16
> rrsize = 0
> allocSize = 16
> r = 0x2b78aee04f00
> old_info = {<RefCountObj> = {<ForceVFPTToTop> = {_vptr.ForceVFPTToTop
> = 0x7f3630}, m_refcount = 0}, iobuffer_index = 0,
> key = 47797242059264, app = {allotment = {application1 = 5326300,
> application2 = 0}, http_data = {http_version = 4,
> pipeline_max = 59, keepalive_timeout = 17, fail_count = 81,
> unused1 = 0, last_failure = 0}, rr = {offset = 5326300}}, data = {
> ip = {sa = {sa_family = 54488, sa_data =
> "^\000\000\000\000\000\020\034$\274x+\000"}, sin = {sin_family = 54488,
> sin_port = 94,
> sin_addr = {s_addr = 0}, sin_zero = "\020\034$\274x+\000"},
> sin6 = {sin6_family = 54488, sin6_port = 94, sin6_flowinfo = 0,
> sin6_addr = {__in6_u = {__u6_addr8 =
> "\020\034$\274x+\000\000\030\036$\274\375\b\000", __u6_addr16 = {7184, 48164,
> 11128,
> 0, 7704, 48164, 2301, 0}, __u6_addr32 = {3156483088,
> 11128, 3156483608, 2301}}}, sin6_scope_id = 3156478176}},
> hostname_offset = 6214872, srv = {srv_offset = 54488, srv_weight
> = 94, srv_priority = 0, srv_port = 0, key = 3156483088}},
> hostname_offset = 11128, ip_timestamp = 2845989456,
> ip_timeout_interval = 11128, is_srv = 0, reverse_dns = 0, round_robin = 1,
> round_robin_elt = 0}
> valid_records = 0
> tip = {_family = 2, _addr = {_ip4 = 540420056, _ip6 = {__in6_u =
> {__u6_addr8 = "\330'6 x+\000\000\360L\020\250x+\000",
> __u6_addr16 = {10200, 8246, 11128, 0, 19696, 43024, 11128,
> 0}, __u6_addr32 = {540420056, 11128, 2819640560, 11128}}},
> _byte = "\330'6 x+\000\000\360L\020\250x+\000", _u32 =
> {540420056, 11128, 2819640560, 11128}, _u64 = {47794936489944,
> 47797215710448}}}
> ttl_seconds = 132
> aname = 0x2b7938021000 "fbmm1.zenfs.com"
> offset = 96
> thread = 0x2b78a8101010
> __func__ = "dnsEvent"
> #7 0x00000000005145dc in Continuation::handleEvent (this=0x2b7938020f00,
> event=600, data=0x2b78ac009440)
> at ../iocore/eventsystem/I_Continuation.h:153
> No locals.
> #8 0x00000000006f681e in DNSEntry::postEvent (this=0x2b78f4028600) at
> DNS.cc:1269
> __func__ = "postEvent"
> #9 0x00000000005145dc in Continuation::handleEvent (this=0x2b78f4028600,
> event=1, data=0x2aac954db040)
> at ../iocore/eventsystem/I_Continuation.h:153
> No locals.
> #10 0x00000000007bc9be in EThread::process_event (this=0x2b78a8101010,
> e=0x2aac954db040, calling_code=1) at UnixEThread.cc:143
> c_temp = 0x2b78f4028600
> lock = {m = {m_ptr = 0x17dea10}, lock_acquired = true}
> __func__ = "process_event"
> #11 0x00000000007bcc2d in EThread::execute (this=0x2b78a8101010) at
> UnixEThread.cc:197
> done_one = false
> e = 0x2aac954db040
> NegativeQueue = {<DLL<Event, Event::Link_link>> = {head = 0x18ce400},
> tail = 0x18ce400}
> next_time = 1475191803711988905
> __func__ = "execute"
> #12 0x00000000007bbfd2 in spawn_thread_internal (a=0x17fb9a0) at Thread.cc:84
> p = 0x17fb9a0
> #13 0x00002b78a2555aa1 in start_thread () from /lib64/libpthread.so.0
> No symbol table info available.
> #14 0x00000032310e893d in clone () from /lib64/libc.so.6
> No symbol table info available.
> core == ET_NET 13 and core == ET_NET 20
> {code}
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