[TS-1327] Crash report: thread_alloc<UnixNetVConnection> (this=0x1162060, t=0x0), in HttpSM::do_http_server_open

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 3.3.0
• Component/s: HTTP, Network

Environment

tree 3.2.x x86_64 cluster type=1, with some patches in cluster

• Assignee: Unassigned
• Reporter: Zhao Yongming
• Created: 30/Jun/12 08:12
• Updated: 07/Nov/13 01:16
• Resolved: 04/Sep/13 20:55

Description

Core was generated by `/usr/bin/traffic_server -M --httpport 8080:fd=12,80:fd=13'.
Program terminated with signal 11, Segmentation fault.
#0  thread_alloc<UnixNetVConnection> (this=0x1162060, t=0x0) at ../../iocore/eventsystem/I_ProxyAllocator.h:50
50        if (l.freelist) {
Missing separate debuginfos, use: debuginfo-install expat-2.0.1-9.1.el6.x86_64 glibc-2.12-1.47.el6.x86_64 keyutils-libs-1.4-3.el6.x86_64 krb5-libs-1.9-22.el6.x86_64 libattr-2.4.44-7.el6.x86_64 libcap-2.16-5.5.el6.x86_64 libcom_err-1.41.12-11.el6.x86_64 libgcc-4.4.6-3.el6.x86_64 libselinux-2.0.94-5.2.el6.x86_64 libstdc++-4.4.6-3.el6.x86_64 ncurses-libs-5.7-3.20090208.el6.x86_64 openssl-1.0.0-20.el6.x86_64 pcre-7.8-3.1.el6.x86_64 readline-6.0-3.el6.x86_64 tcl-8.5.7-6.el6.x86_64 xz-libs-4.999.9-0.3.beta.20091007git.el6.x86_64 zlib-1.2.3-27.el6.x86_64
(gdb) bt
#0  thread_alloc<UnixNetVConnection> (this=0x1162060, t=0x0) at ../../iocore/eventsystem/I_ProxyAllocator.h:50
#1  UnixNetProcessor::allocateThread (this=0x1162060, t=0x0) at UnixNetProcessor.cc:474
#2  0x0000000000645c91 in UnixNetProcessor::connect_re_internal (this=0x1162060, cont=<value optimized out>, target=0x2aba94506d88, 
    opt=0x2aba4dc8f980) at UnixNetProcessor.cc:200
#3  0x0000000000525587 in connect_re (this=0x2aba945066f0, raw=<value optimized out>) at ../../iocore/net/P_UnixNetProcessor.h:89
#4  HttpSM::do_http_server_open (this=0x2aba945066f0, raw=<value optimized out>) at HttpSM.cc:4333
#5  0x00000000005291f8 in HttpSM::set_next_state (this=0x2aba945066f0) at HttpSM.cc:6591
#6  0x000000000052a128 in HttpSM::state_send_server_request_header (this=0x2aba945066f0, event=104, data=0x2aba90010da8) at HttpSM.cc:1932
#7  0x00000000005202b8 in HttpSM::main_handler (this=0x2aba945066f0, event=104, data=0x2aba90010da8) at HttpSM.cc:2463
#8  0x0000000000648651 in handleEvent (event=<value optimized out>, nh=0x2aba4d4901e8, vc=0x2aba90010ca0)
    at ../../iocore/eventsystem/I_Continuation.h:146
#9  read_signal_and_update (event=<value optimized out>, nh=0x2aba4d4901e8, vc=0x2aba90010ca0) at UnixNetVConnection.cc:138
#10 read_signal_done (event=<value optimized out>, nh=0x2aba4d4901e8, vc=0x2aba90010ca0) at UnixNetVConnection.cc:168
#11 0x000000000064abf5 in read_from_net (nh=0x2aba4d4901e8, vc=0x2aba90010ca0, thread=<value optimized out>) at UnixNetVConnection.cc:291
#12 0x0000000000643c6a in NetHandler::mainNetEvent (this=0x2aba4d4901e8, event=<value optimized out>, e=<value optimized out>)
    at UnixNet.cc:372
#13 0x00000000006698a4 in handleEvent (this=0x2aba4d48d010, e=0x1b0fdc0, calling_code=5) at I_Continuation.h:146
#14 EThread::process_event (this=0x2aba4d48d010, e=0x1b0fdc0, calling_code=5) at UnixEThread.cc:142
#15 0x000000000066a233 in EThread::execute (this=0x2aba4d48d010) at UnixEThread.cc:264
#16 0x0000000000668b72 in spawn_thread_internal (a=0x1ac9640) at Thread.cc:88
#17 0x00000032d38077f1 in start_thread () from /lib64/libpthread.so.0
#18 0x00000032d34e570d in clone () from /lib64/libc.so.6
(gdb) 
(gdb) f 2
#2  0x0000000000645c91 in UnixNetProcessor::connect_re_internal (this=0x1162060, cont=<value optimized out>, target=0x2aba94506d88, 
    opt=0x2aba4dc8f980) at UnixNetProcessor.cc:200
200       UnixNetVConnection *vc = allocateThread(t);
(gdb) l
195       sockaddr const* target,
196       NetVCOptions * opt
197     ) {
198       ProxyMutex *mutex = cont->mutex;
199       EThread *t = mutex->thread_holding;
200       UnixNetVConnection *vc = allocateThread(t);
201
202       if (opt)
203         vc->options = *opt;
204       else
(gdb) p *t
Cannot access memory at address 0x0
(gdb) 

Issue Links

• duplicates: TS-1666 Plugins, clustering and core crashes when share_server_sessions=2