Re: [Cppcms-users] Segmentaion fault occurs to booster::aio::io_service running in booster::thread

[CN <cn...@fa...>]

 
On Mon, May 9, 2016, at 09:01 PM, CN wrote:
>
> Regarding the log of gdb backtrace, I seem to have encountered some
> trouble - upon the arrival of signal HUP, the process straightly
> disappears from gdb's control without trace leaving command
> "backtrace" useless.
> I am still trying to figure out how. I will post it as soon as I
> have it.
>
I am unable to get useful result from gdb:
 
(gdb) run
[Here the program stops at cppcms::service::run()]
[Find the running process id in another terminal.]
(gdb) attach 5343
[A lot messages appear here]
[Type command "kill -HUP 5343" in another terminal]
(gdb) c
Continuing.
 
Program received signal SIGHUP. Hangup.
0xb7fdfce2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
(gdb)
Continuing.
Cannot get thread event message: debugger service failed
(gdb)
Continuing.
Cannot execute this command while the selected thread is running.
 
----
 
This is the related ouput from valgrind:
 
==6206== Invalid read of size 4
==6206==    at 0x462105E: pthread_join (pthread_join.c:47)
==6206==    by 0x4121897: booster::thread::join() (pthread.cpp:85)
==6206==    by 0x8049799: main (t.cpp:54)
==6206==  Address 0x6821ba8 is not stack'd, malloc'd or
==(recently) free'd
==6206==
==6206==
==6206== Process terminating with default action of signal 11 (SIGSEGV)
==6206==  Access not within mapped region at address 0x6821BA8
==6206==    at 0x462105E: pthread_join (pthread_join.c:47)
==6206==    by 0x4121897: booster::thread::join() (pthread.cpp:85)
==6206==    by 0x8049799: main (t.cpp:54)
 
I seem to have encountered big trouble! How can it be pthread_join
that is buggy?
Any thought?
Meanwhile, I am going to run this program in different machine to
find more...
 
Regards,
CN
 

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