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  1. Traffic Server
  2. TS-4915

Crash from hostdb in PriorityQueueLess

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Details

    • Bug
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • None
    • 6.2.1, 7.0.0
    • HostDB
    • None

    Description

      Saw this while testing fix for TS-4813 with debug enabled.

      (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
      

      Attachments

        1. ts-4915.diff
          1 kB
          Susan Hinrichs
        2. ts-4915.diff
          1 kB
          Susan Hinrichs

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              shinrich Susan Hinrichs
              shinrich Susan Hinrichs
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                Updated:
                Resolved:

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