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From Abhi Auradkar <aura...@yahoo.com>
Subject Re: [users@httpd] Apache httpd 2.2.21 Segmentation faults
Date Mon, 23 Jul 2012 11:02:23 GMT
Hi Jeff, 

      The version you have mentined below is available as 64-bit lib. 
I will try my test with a 64bit version of apache. 


Thanks,
~Abhi


----- Original Message -----
From: Jeff Trawick <trawick@gmail.com>
To: users@httpd.apache.org
Cc: 
Sent: Thursday, July 19, 2012 5:15 PM
Subject: Re: [users@httpd] Apache httpd 2.2.21 Segmentation faults

On Thu, Jul 19, 2012 at 7:32 AM, Abhi Auradkar <aurabhi@yahoo.com> wrote:
> Jeff,
>
>     The cwmp handler has no functions like 'request_handler' and 'release_lock'.
> The internal redirect from cwmp handler goes to weblogic apache plugin which has to tunnel
the request to a weblogic server
cluster.

Interesting...

I suggest trying the latest WLS plugin release (11.1.1.6.0) and, if
that doesn't resolve the problem, contact Oracle support.

>
>
>
> Thanks,
> ~Abhi
>
> ----- Original Message -----
>
> From: Jeff Trawick <trawick@gmail.com>
> To: users@httpd.apache.org
> Cc:
> Sent: Thursday, July 19, 2012 4:49 PM
> Subject: Re: [users@httpd] Apache httpd 2.2.21 Segmentation faults
>
> On Thu, Jul 19, 2012 at 5:18 AM, Abhi Auradkar <aurabhi@yahoo.com> wrote:
>> Hi,
>>
>>     I tried attaching the debugger to apache running as a single instance(httpd
-X) and head also turned on memcheck and accesscheck(check -all) with librtc.
>> I saw a core dump and it had this stack. Is something going wrong in internal_redirect()?
>>
>> (dbx) where
>> current thread: t@3
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/config.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/config.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_request.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_request.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/config.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/config.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_request.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_request.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_core.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/modules/http/http_core.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/connection.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/connection.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/mpm/worker/worker.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/mpm/worker/worker.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/mpm/worker/worker.c"
>> dbx: warning: can't find file "/data/build_area/xml-data/build-dir/HDM-APACHEHTTPD2218-APACHE2221DEBUG/server/mpm/worker/worker.c"
>>   [1] __rtc_trap_handler(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfee96e24
>>   [2] 0x0(0x1205e0, 0x0, 0x0, 0x0, 0x0, 0xb), at 0x0
>
> This is the point of failure.  release_lock() is branching to zero.
>
>>   [3] release_lock(0x169050, 0x1cc8b0, 0x0, 0x189af0, 0x5, 0x1010101), at 0xfe1504a8
>>   [4] request_handler(0x1539e0, 0x11d588, 0x1539e0, 0x0, 0x0, 0xfffeb748), at 0xfe15dfa8
>
> request_handler and release_lock are third-party code.  (same module
> as the cwmp function seen earlier in the stack?)
>
> This needs to be debugged from the perspective of that third-party
> code -- what was release_lock() trying to do when it branched to
> location zero, and why wasn't a valid function pointer available.
>
>>   [5] ap_run_handler(0x1539e0, 0x1cd7a8, 0x1717ca, 0xfef27378, 0xfee96c9c, 0xfee93dec),
at 0x50314
>>   [6] ap_invoke_handler(r = 0x1539e0), at 0x50fa4
>>   [7] ap_internal_redirect_handler(new_uri = 0x12bdf0 "/cwmp-allow/cwmpWeb/CPEMgt",
r = 0x152ed0), at 0x7e34c
>> =>[8] cwmp_throttle_handler(r = 0x152ed0) (optimized), at 0xfe697c2c (line ~2403)
in "mod_cwmp.c"
>>   [9] ap_run_handler(0x152ed0, 0x159ef0, 0x152ed0, 0x10b098, 0x153068, 0x153070),
at 0x50314
>>   [10] ap_invoke_handler(r = 0x152ed0), at 0x50fa4
>>   [11] ap_process_request(r = 0x152ed0), at 0x7d6dc
>>   [12] ap_process_http_connection(c = 0x10b098), at 0x78e98
>>   [13] ap_run_process_connection(0x10b098, 0x168268, 0x168268, 0x0, 0x1cddf0, 0xf79d0),
at 0x5cba4
>>   [14] ap_process_connection(c = 0x10b098, csd = 0x168268), at 0x5d270
>>   [15] process_socket(p = 0x110fe8, sock = 0x168268, my_child_num = 0, my_thread_num
= 0, bucket_alloc = 0xf79d0), at 0x91e8c
>>   [16] worker_thread(thd = 0x110e40, dummy = 0xe8690), at 0x92a68
>>   [17] dummy_worker(opaque = 0x110e40), line 142 in "thread.c"
>> (dbx) threads
>>
>>
>>
>> ----- Original Message -----
>> From: Jeff Trawick <trawick@gmail.com>
>> To: users@httpd.apache.org; Abhi Auradkar <aurabhi@yahoo.com>
>> Cc:
>> Sent: Wednesday, June 6, 2012 1:25 AM
>> Subject: Re: [users@httpd] Apache httpd 2.2.21 Segmentation faults
>>
>> On Mon, Jun 4, 2012 at 2:27 AM, Abhi Auradkar <aurabhi@yahoo.com> wrote:
>>> Hi All,
>>>
>>>
>>> I am running a apache 2.2.21 on Solaris Sparc. I see the following
>>> segmantation faults every now and then.
>>> Any pointers to whats wrong will be really helpful.
>>
>> Please get the stack of this thread, which is probably the one that crashed:
>>
>> t@68  a l@68   dummy_worker()   LWP suspended in  in <can't get PC>()
>>
>> As is also visible with pflags sometimes, Solaris can misidentify the
>> main thread of the process as the crasher.  That is blocked in read()
>> during steady state and cannot crash.
>>
>>>
>>> Thanks.
>>>
>>> t@1 (l@1) terminated by signal SEGV (Segmentation Fault)
>>> 0xff03e3ac: _read+0x000c:       bcc,pt   %icc,_read+0x20        ! 0xff03e3c0
>>> (dbx) where
>>> current thread: t@1
>>> =>[1] _read(0x4, 0xffbff84b, 0x1, 0x0, 0x0, 0x0), at 0xff03e3ac
>>>   [2] read(0x8, 0xffbff84b, 0x1, 0x0, 0x1cf4, 0x8), at 0xff02ca1c
>>>   [3] ap_mpm_pod_check(0xd6d70, 0x6b854, 0xa0000, 0xff232a00, 0xfff7, 0x0),
>>> at 0x6f408
>>>   [4] child_main(0x5, 0xffbff8b4, 0x135d98, 0x1, 0x9f0ec, 0x1b0870), at
>>> 0x6cbbc
>>>   [5] perform_idle_server_maintenance(0x0, 0x9f000, 0xafb70, 0x2, 0x5, 0x0),
>>> at 0x6d6ac
>>>   [6] server_main_loop(0x0, 0x0, 0x5, 0x9f0b0, 0x0, 0xffbffa78), at 0x6dd10
>>>   [7] ap_mpm_run(0x20, 0xa07d8, 0x9f0b8, 0x0, 0x20, 0x60), at 0x6e000
>>>   [8] main(0x9e800, 0x4b8d0, 0x9ebb4, 0x7ddd0, 0x9d8e8, 0x9e800), at 0x29eac
>>> (dbx) threads
>>> o>    t@1  a  l@1   ?()   signal SIGSEGV in  _read()
>>>       t@3  a  l@3   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@4  a  l@4   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@5  a  l@5   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@6  a  l@6   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@7  a  l@7   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@8  a  l@8   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>       t@9  a  l@9   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@10  a l@10   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@11  a l@11   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@12  a l@12   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@13  a l@13   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@14  a l@14   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@15  a l@15   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@16  a l@16   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@17  a l@17   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@18  a l@18   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@19  a l@19   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@20  a l@20   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@21  a l@21   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@22  a l@22   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@23  a l@23   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@24  a l@24   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@25  a l@25   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@26  a l@26   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@27  a l@27   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@28  a l@28   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@29  a l@29   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@30  a l@30   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@31  a l@31   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@32  a l@32   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@33  a l@33   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@34  a l@34   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@35  a l@35   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@36  a l@36   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@37  a l@37   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@38  a l@38   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@39  a l@39   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@40  a l@40   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@41  a l@41   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@42  a l@42   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@43  a l@43   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@44  a l@44   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@45  a l@45   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@46  a l@46   dummy_worker()   LWP suspended in  _stat64()
>>>      t@47  a l@47   dummy_worker()   LWP suspended in  __lwp_park()
>>>      t@48  a l@48   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@49  a l@49   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@50  a l@50   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@51  a l@51   dummy_worker()   LWP suspended in  strstr()
>>>      t@52  a l@52   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@53  a l@53   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@54  a l@54   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@55  a l@55   dummy_worker()   sleep on 0xff0b5a60  in  __lwp_park()
>>>      t@56  a l@56   dummy_worker()   LWP suspended in  _lstat64()
>>>      t@57  a l@57   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@58  a l@58   dummy_worker()   LWP suspended in  _brk_unlocked()
>>>      t@59  a l@59   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@60  a l@60   dummy_worker()   LWP suspended in  _lstat64()
>>>      t@61  a l@61   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@62  a l@62   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@63  a l@63   dummy_worker()   LWP suspended in  _lstat64()
>>>      t@64  a l@64   dummy_worker()   LWP suspended in  __lwp_park()
>>>      t@65  a l@65   dummy_worker()   LWP suspended in  __pollsys()
>>>      t@66  a l@66   dummy_worker()   sleep on 0x135e30  in  __lwp_park()
>>>      t@67  a l@67   dummy_worker()   LWP suspended in  __lwp_unpark()
>>>      t@68  a l@68   dummy_worker()   LWP suspended in  in <can't get
PC>()
>>>      t@69  a l@69   dummy_worker()   LWP suspended in  ___nanosleep()
>>> (dbx)
>>>
>>>
>>> Apache Version Info
>>> =============
>>>
>>>  /usr/local/apache2/bin/httpd -v
>>> Server version: Apache/2.2.21 (Unix)
>>> Server built:   Jan 19 2012 09:52:37
>>> bash-3.00# /usr/local/apache2/bin/httpd -V
>>> Server version: Apache/2.2.21 (Unix)
>>> Server built:   Jan 19 2012 09:52:37
>>> Server's Module Magic Number: 20051115:30
>>> Server loaded:  APR 1.4.5, APR-Util 1.3.12
>>> Compiled using: APR 1.4.5, APR-Util 1.3.12
>>> Architecture:   32-bit
>>> Server MPM:     Worker
>>>   threaded:     yes (fixed thread count)
>>>     forked:     yes (variable process count)
>>> Server compiled with....
>>>  -D APACHE_MPM_DIR="server/mpm/worker"
>>>  -D APR_HAS_SENDFILE
>>>  -D APR_HAS_MMAP
>>>  -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
>>>  -D APR_USE_PROC_PTHREAD_SERIALIZE
>>>  -D APR_USE_PTHREAD_SERIALIZE
>>>  -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
>>>  -D APR_HAS_OTHER_CHILD
>>>  -D AP_HAVE_RELIABLE_PIPED_LOGS
>>>  -D DYNAMIC_MODULE_LIMIT=128
>>>  -D HTTPD_ROOT="/usr/local/apache2"
>>>  -D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
>>>  -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
>>>  -D DEFAULT_ERRORLOG="logs/error_log"
>>>  -D AP_TYPES_CONFIG_FILE="conf/mime.types"
>>>  -D SERVER_CONFIG_FILE="conf/httpd.conf"
>>>
>>>
>>
>>
>>
>> --
>> Born in Roswell... married an alien...
>> http://emptyhammock.com/
>>
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>>
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>>
>
>
>
> --
> Born in Roswell... married an alien...
> http://emptyhammock.com/
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: users-help@httpd.apache.org
>
> ---------------------------------------------------------------------
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>



-- 
Born in Roswell... married an alien...
http://emptyhammock.com/

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