Hi Ankit,
There is no concrete timeline for 2.4.0, but I would hope that we'll have
it ready within two weeks (by May 10).
Best,
- Gene
On Sun, Apr 26, 2015 at 03:20:07PM +0000, Garg, Ankit wrote:
> Hi Gene,
> Thank you so much. I will try this and get back to you. By the way
> what is the timeline for next release of DMTCP 2.4.0.
>
> Regards
> Ankit
> ________________________________________
> From: Gene Cooperman [g...@ccs.neu.edu]
> Sent: Sunday, April 26, 2015 10:22 AM
> To: Garg, Ankit
> Cc: Gene Cooperman; dmtcp-forum@lists.sourceforge.net; Kapil Arya
> Subject: Re: [Dmtcp-forum] Trying to use mutl-arch support having mixture of
> 64/32 bit executable
>
> Hi Ankit,
> Sorry it's taken so long to report back. We think we will have a bug fix
> soon. In the meantime, have you tried dmtcp-2.4.0-rc1? It's at:
> https://sourceforge.net/projects/dmtcp/files/dmtcp-2.x/2.4.0-rc1/
> We think that particular version (but not the later ones) may satisfy your
> requirements. We'll have a general bug fix in time for the
> full release of DMTCP version 2.4.0.
>
> Best,
> - Gene
>
> ----- Original Message -----
> From: Ankit Garg <ankit_g...@mentor.com>
> To: Gene Cooperman <g...@ccs.neu.edu>
> Cc: dmtcp-forum@lists.sourceforge.net, Kapil Arya <kapil.arya...@gmail.com>
> Sent: Mon, 13 Apr 2015 02:23:49 -0400 (EDT)
> Subject: Re: [Dmtcp-forum] Trying to use mutl-arch support having mixture of
> 64/32 bit executable
>
> Hi Gene,
> Thanks for debugging this. I saw in one of your slides talking
> about handling of this Linux security measure of address space
> randomization where special measures were taken at restart time to grow
> stack to include old stack. Is this expectation of 1MB stack size
> accommodation broken here ?
> Also turning off randomization on per process basic would not be
> possible in our system which is too complex involving multiple processes
> coming from different teams here
>
> @Kapil: I am attaching the map file with this, also mentioning the
> error for reference. I guess you are correct, restart time is trying to
> unmap special memory segment which comes at last below the stack
>
> [6200] mtcp_restart.c:626 unmap_memory_areas_and_restore_vdso:
> ***WARNING: munmap(0xffffe000, 4096) failed: 22
> Segmentation fault (core dumped)
>
>
> Regards
> Ankit
>
>
> On 04/12/2015 09:44 AM, Gene Cooperman wrote:
> > P.S., one way to turn off randomization on a per process basis
> > is the -R flag of 'setarch'.
> > - Gene
> >
> > ----- Original Message -----
> > From: Gene Cooperman <g...@ccs.neu.edu>
> > To: Ankit Garg <ankit_g...@mentor.com>
> > Cc: Gene Cooperman <g...@ccs.neu.edu>, dmtcp-forum@lists.sourceforge.net
> > Sent: Sun, 12 Apr 2015 00:02:49 -0400 (EDT)
> > Subject: Re: [Dmtcp-forum] Trying to use mutl-arch support having mixture
> > of 64/32 bit executable
> >
> > Hi Ankit,
> > I can report some progress. I was able to reproduce the bug
> > on a Centos 6 computer. I would guess that the bug appears
> > for Red Hat versions 5 and 6, and the derived distros.
> > In addition, the DMTCP bug appears to be related to address
> > space randomization. I turned off address space randomization:
> > sudo bash -c ' echo 0 > /proc/sys/kernel/randomize_va_space'
> > and the bug went away.
> >
> > Naturally, DMTCP is supposed to also work correctly when
> > address space randomization is turned on. I'll continue to
> > work on that case. In the meantime, you can use DMTCP in your
> > app, if you're in a possition to turn off the randomization.
> > There are also methods to turn off randomization on a per-process
> > basis, but that would be painful if you have to do it for each process.
> >
> > Best wishes,
> > - Gene
> >
> >
> > ----- Original Message -----
> > From: Ankit Garg <ankit_g...@mentor.com>
> > To: Gene Cooperman <g...@ccs.neu.edu>
> > Cc: dmtcp-forum@lists.sourceforge.net
> > Sent: Fri, 10 Apr 2015 08:45:39 -0400 (EDT)
> > Subject: Re: [Dmtcp-forum] Trying to use mutl-arch support having mixture
> > of 64/32 bit executable
> >
> > Here is the output
> >
> > DMTCP version: 2.4.0-rc1
> > Date built: Fri Apr 10 18:14:45 IST 2015
> > config.log: ./configure
> > --prefix=/in/TBX_SANDBOXES/agarg/dmtcp/tbx_dev/src/mct/dmtcp/dmtcp_install
> > --enable-realtime-ckpt-signal
> > Description: Red Hat Enterprise Linux Client release 5.8 (Tikanga)
> > Codename: Tikanga
> > Linux inndt232 2.6.18-308.el5 #1 SMP Fri Jan 27 17:17:51 EST 2012 x86_64
> > x86_64 x86_64 GNU/Linux
> > Compiler: gcc
> > Using built-in specs.
> > Target: x86_64-unknown-linux-gnu
> > Configured with: /y/jon/gcc/gcc412/gcc-4.1.2/configure
> > --prefix=/tools/linux64/gcc-4.1.2
> > Thread model: posix
> > gcc version 4.1.2
> > CFLAGS: -g -O0
> > CXXFLAGS: -g -O2
> > CPPFLAGS:
> > LDFLAGS:
> > Error: could not find libjava.so
> > Error: could not find Java 2 Runtime Environment.
> > lrwxrwxrwx 1 root root 11 Mar 25 2014 /lib64/libc.so.6 -> libc-2.5.so
> > lrwxrwxrwx 1 root root 11 Mar 25 2014 /lib/libc.so.6 -> libc-2.5.so
> > -rw------- 1 root root 217016 Apr 10 18:13 /var/db/nscd/group
> > -rw------- 1 root root 217016 Apr 10 18:14 /var/db/nscd/hosts
> > -rw------- 1 root root 1801163 Apr 10 18:14 /var/db/nscd/passwd
> > -rw-r--r-- 1 root root 5 Feb 22 14:46 /var/run/nscd/nscd.pid
> > srw-rw-rw- 1 root root 0 Feb 22 14:46 /var/run/nscd/socket
> >
> >
> >
> > On 04/10/2015 06:12 PM, Gene Cooperman wrote:
> >> Hi Ankit,
> >> Interesting. So, the issue seems to be what environmnet.
> >> Could you do:
> >> make display-build-env
> >> in the root directory of DMTCP, and send me the output?
> >> I'll see if I can locate a similar environment to the
> >> one that you're using. If not, is there some possibility
> >> of getting a guest account, or even doing a screen-sharing
> >> session together while talking on the phone?
> >>
> >> Best,
> >> - Gene
> >>
> >> ----- Original Message -----
> >> From: Ankit Garg <ankit_g...@mentor.com>
> >> To: Gene Cooperman <g...@ccs.neu.edu>
> >> Cc: dmtcp-forum@lists.sourceforge.net
> >> Sent: Fri, 10 Apr 2015 06:57:47 -0400 (EDT)
> >> Subject: Re: [Dmtcp-forum] Trying to use mutl-arch support having mixture
> >> of 64/32 bit executable
> >>
> >> Hi Gene,
> >> Unfortunately this script is not working for me and showing
> >> the same seg-fault. Here the screen logs
> >>
> >>
> >> dmtcp_coordinator starting...
> >> Host: inndt232 (137.202.214.37)
> >> Port: 7779
> >> Checkpoint Interval: 6
> >> Exit on last client: 1
> >> Backgrounding...
> >> [40000] NOTE at socketconnlist.cpp:156 in scanForPreExisting;
> >> REASON='found pre-existing socket... will not be restored'
> >> fd = 11
> >> device = socket:[418384]
> >> [40000] WARNING at socketconnection.cpp:192 in TcpConnection;
> >> REASON='JWARNING((domain == AF_INET || domain == AF_UNIX || domain ==
> >> AF_INET6) && (type & 077) == SOCK_STREAM) failed'
> >> domain = 0
> >> type = 0
> >> protocol = 0
> >> [40000] NOTE at socketconnlist.cpp:156 in scanForPreExisting;
> >> REASON='found pre-existing socket... will not be restored'
> >> fd = 12
> >> device = socket:[418386]
> >> [40000] WARNING at socketconnection.cpp:192 in TcpConnection;
> >> REASON='JWARNING((domain == AF_INET || domain == AF_UNIX || domain ==
> >> AF_INET6) && (type & 077) == SOCK_STREAM) failed'
> >> domain = 0
> >> type = 0
> >> protocol = 0
> >> [40000] NOTE at socketconnlist.cpp:156 in scanForPreExisting;
> >> REASON='found pre-existing socket... will not be restored'
> >> fd = 13
> >> device = socket:[418480]
> >> [40000] WARNING at socketconnection.cpp:192 in TcpConnection;
> >> REASON='JWARNING((domain == AF_INET || domain == AF_UNIX || domain ==
> >> AF_INET6) && (type & 077) == SOCK_STREAM) failed'
> >> domain = 0
> >> type = 0
> >> protocol = 0
> >> [40000] NOTE at socketconnlist.cpp:156 in scanForPreExisting;
> >> REASON='found pre-existing socket... will not be restored'
> >> fd = 14
> >> device = socket:[453279]
> >> [40000] WARNING at socketconnection.cpp:192 in TcpConnection;
> >> REASON='JWARNING((domain == AF_INET || domain == AF_UNIX || domain ==
> >> AF_INET6) && (type & 077) == SOCK_STREAM) failed'
> >> domain = 0
> >> type = 0
> >> protocol = 0
> >> 1 2 3 4 5 6 7 ./multi-arch.sh: line 21: 9319 Killed
> >> $dir/dmtcp-multi-arch-build/bin/dmtcp_launch -i6 ./a.out
> >> dmtcp_coordinator starting...
> >> Host: inndt232 (137.202.214.37)
> >> Port: 7779
> >> Checkpoint Interval: disabled (checkpoint manually instead)
> >> Exit on last client: 1
> >> Backgrounding...
> >> *[9344] mtcp_restart.c:607 unmap_memory_areas_and_restore_vdso:
> >> ***WARNING: munmap(0xffffe000, 4096) failed: 22
> >> ./multi-arch.sh: line 22: 9344 Segmentation fault (core dumped)
> >> $dir/dmtcp-multi-arch-build/bin/dmtcp_restart ckpt_a.out_*.dmtcp
> >> **** The restarted application should again be printing. *****
> >>
> >>
> >> Regards
> >> Ankit
> >>
> >>
> >>
> >> On 04/10/2015 04:19 PM, Gene Cooperman wrote:
> >>> Hi Ankit,
> >>> Actually, I just tried again to reproduce the bug and failed this
> >>> time.
> >>> So, I'm still looking.
> >>> Would you mind executing the attached script multi-arch.sh , just
> >>> to
> >>> double-check that we're seeing the same thing? This script succeeds for
> >>> me.
> >>> (Please do scan the script beforehand, so that you know what you'll
> >>> be executing.)
> >>> I'll have to turn to something else right now, but by the end of
> >>> today or the weekend, I can take another look.
> >>>
> >>> Thanks,
> >>> - Gene
> >>>
> >>>
> >>> On Fri, Apr 10, 2015 at 04:08:53PM +0530, Ankit Garg wrote:
> >>>> Hi Gene,
> >>>> I pulled the git repository
> >>>> https://github.com/dmtcp/dmtcp.git.
> >>>>
> >>>> dmtcp_launch --version
> >>>> dmtcp_launch (DMTCP) 2.4.0-rc1
> >>>>
> >>>> Just for the sake of understanding, could you explain the bug. Is it
> >>>> related to stack restoration during restart ?
> >>>>
> >>>> Thanks for prompt reply.
> >>>>
> >>>> Regards
> >>>> Ankit
> >>>>
> >>>>
> >>>>
> >>>> On 04/10/2015 04:02 PM, Gene Cooperman wrote:
> >>>>> Hi Ankit,
> >>>>> I can confirm this bug on the development branch of DMTCP from
> >>>>> the
> >>>>> github repo. Thanks very much for reporting this. I'm hoping to
> >>>>> report back with a bug fix soon, but please don't hesitate to write
> >>>>> for the status.
> >>>>> Also, just for completeness, which version of DMTCP were you
> >>>>> using?
> >>>>>
> >>>>> Thanks,
> >>>>> - Gene
> >>>>>
> >>>>>
> >>>>> On Fri, Apr 10, 2015 at 01:01:40PM +0530, Ankit Garg wrote:
> >>>>>> Hi Gene,
> >>>>>> Thanks for the reply. GDB is showing following stack on
> >>>>>> seg-fault
> >>>>>>
> >>>>>> #0 0x558f23a2 in ?? ()
> >>>>>> #1 0x558f6d68 in ?? ()
> >>>>>> #2 0x558f6a74 in ?? ()
> >>>>>> #3 0x0804c525 in restart_fast_path () at mtcp_restart.c:454
> >>>>>>
> >>>>>> Above line is
> >>>>>>
> >>>>>> *rinfo.restorememoryareas_fptr(&rinfo);*
> >>>>>>
> >>>>>> within function *restart_fast_path*
> >>>>>>
> >>>>>>
> >>>>>> Following is the list of directories for the installed area
> >>>>>>
> >>>>>> .:
> >>>>>> total 28
> >>>>>> drwxr-xr-x 6 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 18 agarg medrd 8192 Apr 10 12:48 ..
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 bin
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 include
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 lib
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:44 share
> >>>>>>
> >>>>>> ./bin:
> >>>>>> total 9400
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 6 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> -rwxr-xr-x 1 agarg medrd 2095273 Apr 10 12:44 dmtcp_command
> >>>>>> -rwxr-xr-x 1 agarg medrd 1765945 Apr 10 12:44 dmtcp_coordinator
> >>>>>> -rwxr-xr-x 1 agarg medrd 712759 Apr 10 12:44 dmtcp_discover_rm
> >>>>>> -rwxr-xr-x 1 agarg medrd 2245864 Apr 10 12:44 dmtcp_launch
> >>>>>> -rwxr-xr-x 1 agarg medrd 10101 Apr 10 12:44 dmtcp_nocheckpoint
> >>>>>> -rwxr-xr-x 1 agarg medrd 2461225 Apr 10 12:44 dmtcp_restart
> >>>>>> -rwxr-xr-x 1 agarg medrd 5102 Apr 10 12:44 dmtcp_rm_loclaunch
> >>>>>> -rwxr-xr-x 1 agarg medrd 77645 Apr 10 12:44 dmtcp_srun_helper
> >>>>>> -rwxr-xr-x 1 agarg medrd 37119 Apr 10 12:44 dmtcp_ssh
> >>>>>> -rwxr-xr-x 1 agarg medrd 34125 Apr 10 12:44 dmtcp_sshd
> >>>>>> -rwxr-xr-x 1 agarg medrd 97427 Apr 10 12:44 mtcp_restart
> >>>>>>
> >>>>>> ./include:
> >>>>>> total 24
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 6 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> -rw-r--r-- 1 agarg medrd 13123 Apr 10 12:44 dmtcp.h
> >>>>>>
> >>>>>> ./lib:
> >>>>>> total 12
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 .
> >>>>>> drwxr-xr-x 6 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 dmtcp
> >>>>>>
> >>>>>> ./lib/dmtcp:
> >>>>>> total 9164
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 ..
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:43 32
> >>>>>> -rwxr-xr-x 1 agarg medrd 17585 Apr 10 12:44 libdmtcp_alloc.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 613809 Apr 10 12:44 libdmtcp_batch-queue.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 11066 Apr 10 12:44 libdmtcp_dl.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 3488068 Apr 10 12:44 libdmtcp_ipc.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 17010 Apr 10 12:44 libdmtcp_modify-env.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 606468 Apr 10 12:44 libdmtcp_pid.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 359897 Apr 10 12:44 libdmtcp_ptrace.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 3545880 Apr 10 12:44 libdmtcp.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 492260 Apr 10 12:44 libdmtcp_timer.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 163061 Apr 10 12:44 libdmtcp_unique-ckpt.so
> >>>>>>
> >>>>>> ./lib/dmtcp/32:
> >>>>>> total 16
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:43 .
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:43 bin
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 lib
> >>>>>>
> >>>>>> ./lib/dmtcp/32/bin:
> >>>>>> total 84
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:43 .
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:43 ..
> >>>>>> -rwxr-xr-x 1 agarg medrd 72049 Apr 10 12:43 mtcp_restart-32
> >>>>>>
> >>>>>> ./lib/dmtcp/32/lib:
> >>>>>> total 12
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 .
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:43 ..
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:43 dmtcp
> >>>>>>
> >>>>>> ./lib/dmtcp/32/lib/dmtcp:
> >>>>>> total 8192
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:43 .
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:43 ..
> >>>>>> -rwxr-xr-x 1 agarg medrd 13682 Apr 10 12:43 libdmtcp_alloc.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 541615 Apr 10 12:43 libdmtcp_batch-queue.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 8405 Apr 10 12:43 libdmtcp_dl.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 3122259 Apr 10 12:43 libdmtcp_ipc.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 13585 Apr 10 12:43 libdmtcp_modify-env.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 531681 Apr 10 12:43 libdmtcp_pid.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 327213 Apr 10 12:43 libdmtcp_ptrace.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 3164514 Apr 10 12:43 libdmtcp.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 453328 Apr 10 12:43 libdmtcp_timer.so
> >>>>>> -rwxr-xr-x 1 agarg medrd 144674 Apr 10 12:43 libdmtcp_unique-ckpt.so
> >>>>>>
> >>>>>> ./share:
> >>>>>> total 16
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 6 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 doc
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 man
> >>>>>>
> >>>>>> ./share/doc:
> >>>>>> total 12
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 dmtcp-2.4.0-rc1
> >>>>>>
> >>>>>> ./share/doc/dmtcp-2.4.0-rc1:
> >>>>>> total 64
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> -rw-r--r-- 1 agarg medrd 2754 Apr 10 12:44 AUTHORS
> >>>>>> -rw-r--r-- 1 agarg medrd 2280 Apr 10 12:44 COPYING
> >>>>>> -rw-r--r-- 1 agarg medrd 26797 Apr 10 12:44 NEWS
> >>>>>> -rw-r--r-- 1 agarg medrd 20237 Apr 10 12:44 QUICK-START
> >>>>>>
> >>>>>> ./share/man:
> >>>>>> total 12
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 4 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 man1
> >>>>>>
> >>>>>> ./share/man/man1:
> >>>>>> total 28
> >>>>>> drwxr-xr-x 2 agarg medrd 4096 Apr 10 12:44 .
> >>>>>> drwxr-xr-x 3 agarg medrd 4096 Apr 10 12:44 ..
> >>>>>> -rw-r--r-- 1 agarg medrd 3556 Apr 10 12:44 dmtcp.1.gz
> >>>>>> -rw-r--r-- 1 agarg medrd 1026 Apr 10 12:44 dmtcp_command.1.gz
> >>>>>> -rw-r--r-- 1 agarg medrd 1280 Apr 10 12:44 dmtcp_coordinator.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 dmtcp_discover_rm.1.gz ->
> >>>>>> dmtcp.1.gz
> >>>>>> -rw-r--r-- 1 agarg medrd 2093 Apr 10 12:44 dmtcp_launch.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 dmtcp_nocheckpoint.1.gz
> >>>>>> -> dmtcp.1.gz
> >>>>>> -rw-r--r-- 1 agarg medrd 1571 Apr 10 12:44 dmtcp_restart.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 dmtcp_rm_loclaunch.1.gz
> >>>>>> -> dmtcp.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 dmtcp_ssh.1.gz -> dmtcp.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 dmtcp_sshd.1.gz ->
> >>>>>> dmtcp.1.gz
> >>>>>> lrwxrwxrwx 1 agarg medrd 10 Apr 10 12:44 mtcp_restart.1.gz ->
> >>>>>> dmtcp.1.gz
> >>>>>>
> >>>>>>
> >>>>>> Regarding sharing the session, I have to check my organization
> >>>>>> policies and soon get back to you.
> >>>>>>
> >>>>>> Thanks for your help
> >>>>>>
> >>>>>> Regards
> >>>>>> Ankit
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> On 04/09/2015 10:40 PM, Gene Cooperman wrote:
> >>>>>>> Hi Ankit,
> >>>>>>> Could you confirm for us what files are in your install
> >>>>>>> directory
> >>>>>>> (especially in bin and lib)?
> >>>>>>> Also, are you able to run GDB on the core dump to see the
> >>>>>>> stack?
> >>>>>>> Or alternatively, you could simply try:
> >>>>>>> gdb --args dmtcp_restart ckpt_*.dmtcp
> >>>>>>> (gdb) b execvp
> >>>>>>> (gdb) r
> >>>>>>> (gdb) b main
> >>>>>>> (gdb) c
> >>>>>>> [ Not all those gdb commands are necessary, but I like to go slow and
> >>>>>>> check each step. ]
> >>>>>>>
> >>>>>>> Finally, if you can set this up in a VM or on some outside machine
> >>>>>>> where
> >>>>>>> we could get an account, then we'd be happy to login and check
> >>>>>>> directly
> >>>>>>> what is happening.
> >>>>>>>
> >>>>>>> Best wishes,
> >>>>>>> - Gene
> >>>>>>>
> >>>>>>>
> >>>>>>> On Thu, Apr 09, 2015 at 04:00:08PM +0530, Ankit Garg wrote:
> >>>>>>>> Hi,
> >>>>>>>> I followed the instructions at
> >>>>>>>> https://github.com/dmtcp/dmtcp/blob/master/doc/multi-arch.txt to
> >>>>>>>> build
> >>>>>>>> the package for multi architecture . Now I am trying to
> >>>>>>>> checkpoint/restart a 32-bit binary using the same package. On
> >>>>>>>> Restart,
> >>>>>>>> it crashes with the following error.
> >>>>>>>>
> >>>>>>>> % g++ test.cxx -m32
> >>>>>>>> % dmtcp_launch ./a.out
> >>>>>>>>
> >>>>>>>> Took checkpoint from the shell where dmtcp_coordinator is invoked
> >>>>>>>>
> >>>>>>>> then
> >>>>>>>>
> >>>>>>>> % dmtcp_restart ckpt*
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> [26734] mtcp_restart.c:607 unmap_memory_areas_and_restore_vdso:
> >>>>>>>> ***WARNING: munmap(0xffffe000, 4096) failed: 22
> >>>>>>>> Segmentation fault (core dumped)
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> Can anyone help on this. I am using latest release pulled from git.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> Regards
> >>>>>>>> Ankit
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> ------------------------------------------------------------------------------
> >>>>>>>> BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT
> >>>>>>>> Develop your own process in accordance with the BPMN 2 standard
> >>>>>>>> Learn Process modeling best practices with Bonita BPM through live
> >>>>>>>> exercises
> >>>>>>>> http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual-
> >>>>>>>> event?utm_
> >>>>>>>> source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF
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