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From bugzi...@apache.org
Subject [Bug 54886] SEGV in function ap_event_pod_check in server/mpm/event/pod.c line 58
Date Wed, 24 Apr 2013 15:40:45 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=54886

Dennis Clarke <dclarke@blastwave.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #2 from Dennis Clarke <dclarke@blastwave.org> ---
Not sure what you are looking for however thread 1 looks to be the issue here :

node002 $ dbx httpd
z_009-time_1366801056-pid_10289-uid_80-gid_80-fid_httpd.core
Reading httpd
core file header read successfully
Reading ld.so.1
Reading libpcre.so.1.0.1
Reading libaprutil-1.so.0.5.1
Reading libexpat.so.0.5.0
Reading libiconv.so.2.5.1
Reading libapr-1.so.0.4.6
Reading libresolv.so.2
Reading libuuid.so.1
Reading libsendfile.so.1
Reading librt.so.1
Reading libsocket.so.1
Reading libnsl.so.1
Reading libpthread.so.1
Reading libc.so.1
Reading libaio.so.1
Reading libmd.so.1
Reading libc_psr.so.1
Reading libmp.so.2
Reading libscf.so.1
Reading libdoor.so.1
Reading libuutil.so.1
Reading libgen.so.1
Reading libm.so.2
Reading libldap.so.5
Reading libthread.so.1
Reading libdl.so.1
Reading libsasl.so.1
Reading libmd_psr.so.1
Reading libplc4.so
Reading libnspr4.so
Reading libssl3.so
Reading libnss3.so
Reading libnssutil3.so
Reading libplds4.so
Reading mod_authn_file.so
Reading mod_authn_anon.so
Reading mod_authn_core.so
Reading mod_authz_host.so
Reading mod_authz_groupfile.so
Reading mod_authz_user.so
Reading mod_authz_core.so
Reading mod_access_compat.so
Reading mod_auth_basic.so
Reading mod_auth_digest.so
Reading mod_file_cache.so
Reading mod_cache.so
Reading mod_socache_shmcb.so
Reading mod_reqtimeout.so
Reading mod_ext_filter.so
Reading mod_include.so
Reading mod_filter.so
Reading mod_deflate.so
Reading libz.so.1.2.7
Reading mod_mime.so
Reading mod_log_config.so
Reading mod_logio.so
Reading mod_env.so
Reading mod_expires.so
Reading mod_headers.so
Reading mod_usertrack.so
Reading mod_unique_id.so
Reading mod_setenvif.so
Reading mod_version.so
Reading mod_proxy.so
Reading mod_proxy_connect.so
Reading mod_proxy_ftp.so
Reading mod_proxy_http.so
Reading mod_unixd.so
Reading mod_dav.so
Reading mod_status.so
Reading mod_autoindex.so
Reading mod_info.so
Reading mod_suexec.so
Reading mod_cgid.so
Reading mod_dav_fs.so
Reading mod_vhost_alias.so
Reading mod_negotiation.so
Reading mod_dir.so
Reading mod_actions.so
Reading mod_speling.so
Reading mod_userdir.so
Reading mod_alias.so
Reading mod_rewrite.so
Reading libphp5.so
Reading libmysqlclient.so.18.0.0
Reading libgmp.so.10.1.1
Reading libintl.so.8.1.1
Reading libfreetype.so.6.10.0
Reading libX11.so.4
Reading libXpm.so.4
Reading libpng15.so.15.14.0
Reading libjpeg.so.9.0.0
Reading libssl.so.1.0.0
Reading libcrypto.so.1.0.0
Reading libcurl.so.4.3.0
Reading libidn.so.11.6.9
Reading libssh2.so.1.0.1
Reading libxml2.so.2.9.0
Reading libgcc_s.so.1
Reading liblzma.so.5.0.4
t@1 (l@1) terminated by signal SEGV (Segmentation Fault)
0xffffffff7d8dc858: _read+0x000c:       bcc,pt   %icc,_read+0x20        !
0xffffffff7d8dc86c
Current function is ap_event_pod_check
   58       rc = read(fd, &c, 1);
(dbx) threads                                                                   
o>    t@1  a  l@1   ?()   signal SIGSEGV in  _read() 
      t@3  a  l@3   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@4  a  l@4   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@5  a  l@5   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@6  a  l@6   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@7  a  l@7   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@8  a  l@8   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
      t@9  a  l@9   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@10  a l@10   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@11  a l@11   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@12  a l@12   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@13  a l@13   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@14  a l@14   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@15  a l@15   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@16  a l@16   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@17  a l@17   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@18  a l@18   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@19  a l@19   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@20  a l@20   dummy_worker()   LWP suspended in  __pollsys() 
     t@21  a l@21   dummy_worker()   LWP suspended in  __pollsys() 
     t@22  a l@22   dummy_worker()   LWP suspended in  __pollsys() 
     t@23  a l@23   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@24  a l@24   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@25  a l@25   dummy_worker()   LWP suspended in  _iconv() 
     t@26  a l@26   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@27  a l@27   dummy_worker()   sleep on 0x1002fcc50  in  __lwp_park() 
     t@28  a l@28   dummy_worker()   LWP suspended in  _portfs() 
(dbx) thread
current thread ($thread) is t@1
(dbx) where 
current thread: t@1
  [1] _read(0x4, 0xffffffff7ffff2c3, 0x1, 0x1000a2c8c, 0x0, 0x1), at
0xffffffff7d8dc858 
  [2] read(0x5, 0xffffffff7ffff2c3, 0x1, 0x0, 0xffffffff7dc00200, 0x0), at
0xffffffff7d8ca240 
=>[3] ap_event_pod_check(pod = 0x10029a548), line 58 in "pod.c"
  [4] child_main(child_num_arg = 0), line 2185 in "event.c"
  [5] make_child(s = 0x1001f9848, slot = 0), line 2272 in "event.c"
  [6] perform_idle_server_maintenance(), line 2469 in "event.c"
  [7] server_main_loop(remaining_children_to_start = 0), line 2597 in "event.c"
  [8] event_run(_pconf = 0x1001cf468, plog = 0x100237028, s = 0x1001f9848),
line 2656 in "event.c"
  [9] ap_run_mpm(0x1001cf468, 0x100237028, 0x1001f9848, 0x1001f9848, 0x0, 0x0),
at 0x100038990 
  [10] main(argc = 3, argv = 0xffffffff7ffffb98), line 777 in "main.c"
(dbx) thread -info t@1
        Thread t@1 (0xffffffff7dc00200) at priority 43
        state: active on    l@1
        base function: 0x0: 0x0000000000000000() stack:
0xffffffff80000000[8388608]
        flags: (none)
        masked signals: HUP INT QUIT ALRM USR1 CLD PWR WINCH URG POLL TSTP CONT
TTIN TTOU VTALRM PROF XCPU XFSZ WAITING LWP FREEZE THAW LOST XRES JVM1 JVM2
RTMIN RTMIN+1 RTMIN+2 RTMIN+3 RTMIN+4 RTMIN+5 RTMIN+6 RTMIN+7 
        Currently active in _read
(dbx)

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