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Pradeep Chhetri | 1 Jul 2011 09:28
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Pradeep Chhetri wants to chat

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- Instant messaging right inside Gmail
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- Built-in search for finding your messages and a helpful way of organizing
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Pradeep Chhetri | 1 Jul 2011 09:28
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Pradeep Chhetri wants to chat

-----------------------------------------------------------------------

Pradeep Chhetri wants to stay in better touch using some of Google's coolest new
products.

If you already have Gmail or Google Talk, visit:
http://mail.google.com/mail/b-a19e8edeac-9323c51205-Cz5nHK3EO0xpQco0vfw-MPCbKMo
You'll need to click this link to be able to chat with Pradeep Chhetri.

To get Gmail - a free email account from Google with over 2,800 megabytes of
storage - and chat with Pradeep Chhetri, visit:
http://mail.google.com/mail/a-a19e8edeac-9323c51205-Cz5nHK3EO0xpQco0vfw-MPCbKMo

Gmail offers:
- Instant messaging right inside Gmail
- Powerful spam protection
- Built-in search for finding your messages and a helpful way of organizing
  emails into "conversations"
- No pop-up ads or untargeted banners - just text ads and related information
  that are relevant to the content of your messages

All this, and its yours for free. But wait, there's more! By opening a Gmail
account, you also get access to Google Talk, Google's instant messaging
service:

http://www.google.com/talk/

Google Talk offers:
- Web-based chat that you can use anywhere, without a download
- A contact list that's synchronized with your Gmail account
(Continue reading)

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fche | 2 Jul 2011 16:27
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new systemtap snapshot available

A new automated systemtap source snapshot is available
ftp://sources.redhat.com/pub/systemtap/snapshots/systemtap-20110702.tar.bz2
1741839 bytes, 0c66fba tag
See also ftp://sources.redhat.com/pub/systemtap/snapshots/
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Sateesh | 4 Jul 2011 10:12
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Re: vfs tapset compilation error.

Daniel Fishman <quantera <at> gmail.com> writes:

> The problem occurs only if XDG_DATA_DIRS points to the same tapsets but in
> a directory different from default search path. Then identical tapsets 
> processed twice - once for each search path.
> 
> Can please somebody confirm that the problem reproduces elsewhere so
> that I would open a new bug?
> 
> 

The problem is indeed seen if $(stap -v -e 'probe vfs.read {printf("read
performed\n"); exit()}') is run as a non-root user, but is not a problem if run
as a root user
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Daniel Migault | 4 Jul 2011 10:56
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Re: Comments on Installation Guide

Hi Frank,

Thanks for your feed back. Here is a an update of the README file. I
added items not already in the README. Feel free to remove those you
believe are not useful.

Regards,
Daniel

On Sun, Jun 5, 2011 at 1:18 PM, Frank Ch. Eigler <fche <at> redhat.com> wrote:
>
> Hi, Daniel -
>
>
> mglt.biz wrote:
>
> > I went through the documentation, and maybe I would add a few
> > indications for the installation. It looks that some of them have
> > been removed from previous installation guides.
>
> Such distribution-specific information could go into the wiki, or
> perhaps new README.fedora type files.  Note that the main README
> already has similar information.
>
> > I Install systemtap
> >
> > If you want to install systemtap from rpm :
> >   yum install systemtap systemtap-client systemtap-grapher
> > systemtap-runtime systemtap-sdt-devel systemtap-server
> > systemtap-testsuite
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fche at redhat dot com | 4 Jul 2011 23:21
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[Bug translator/12773] invoke abrt-action-debuginfo-install --id=XXXXX if missing debuginfo

http://sourceware.org/bugzilla/show_bug.cgi?id=12773

--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> 2011-07-04 21:21:05 UTC ---
With fedora15 abrt-2.0.3-1.fc15.x86_64, the following works:

% eu-readelf -x .note.gnu.build-id /usr/bin/zip # for example

Hex dump of section [3] '.note.gnu.build-id', 36 bytes at offset 0x23c:
  0x00000000 04000000 14000000 03000000 474e5500 ............GNU.
  0x00000010 b038a398 648e7c04 6fd298aa c20b70bb .8..d.|.o.....p.
  0x00000020 9d4a2f05                            .J/.

% echo b038a398648e7c046fd298aac20b70bb9d4a2f05 |
abrt-action-install-debuginfo-to-abrt-cache -y --ids=-
[...]

% ls
/var/cache/abrt-di/usr/lib/debug/.build-id/b0/38a398648e7c046fd298aac20b70bb9d4a2f05
[...]

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mjw at redhat dot com | 4 Jul 2011 23:48
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[Bug translator/12773] invoke abrt-action-debuginfo-install --id=XXXXX if missing debuginfo

http://sourceware.org/bugzilla/show_bug.cgi?id=12773

Mark Wielaard <mjw at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mjw at redhat dot com

--- Comment #3 from Mark Wielaard <mjw at redhat dot com> 2011-07-04 21:48:09 UTC ---
(In reply to comment #2)
> % eu-readelf -x .note.gnu.build-id /usr/bin/zip # for example

FYI.
eu-readelf -n or eu-unzip -n give a slightly easier way to read the build-id:

$ eu-readelf -n /usr/bin/zip

Note section [ 2] '.note.ABI-tag' of 32 bytes at offset 0x148:
  Owner          Data size  Type
  GNU                   16  VERSION
    OS: Linux, ABI: 2.6.32

Note section [ 3] '.note.gnu.build-id' of 36 bytes at offset 0x168:
  Owner          Data size  Type
  GNU                   20  GNU_BUILD_ID
    Build ID: d39236960645ea293a34c2af6761a74b821e231d

$ eu-unstrip -n -e /usr/bin/zip
0x8047000+0x80580 d39236960645ea293a34c2af6761a74b821e231d <at> 0x8047178
/usr/bin/zip -
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mjw at redhat dot com | 5 Jul 2011 13:00
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[Bug runtime/12960] New: _stp_ctl_send tries to msleep when out of memory

http://sourceware.org/bugzilla/show_bug.cgi?id=12960

           Summary: _stp_ctl_send tries to msleep when out of memory
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap <at> sourceware.org
        ReportedBy: mjw <at> redhat.com

_stp_ctl_send tries to msleep when out of memory which seems to cause problems
and eventually kernel crashes. It isn't very reproducable, but the following
triggers it for me pretty often:

/usr/local/install/systemtap/bin/stap -d
/usr/lib64/python2.7/lib-dynload/_ssl.so -d /usr/lib64/libssl.so.1.0.0d -d
/lib64/libcrypto.so.1.0.0d -DMAXTRACE=128 -d /usr/bin/gdb --ldd -e 'probe
syscall.open { if (pid() == target()) { log(filename); print_ubacktrace();
log("--"); } }' -c 'gdb --version'

[ 1534.651888] stap_afa62ad505a7aaf8c957387db22ba031_16869: systemtap:
1.6/0.152, base: ffffffffa08a0000, memory: 6199data/35text/26ctx/13net/34alloc
kb, probes: 2
[ 1534.711077] ctl_send msleep because of err: -12
[ 1534.712955] BUG: scheduling while atomic: kworker/0:0/0/0x00000100
[ 1534.715360] Modules linked in: stap_afa62ad505a7aaf8c957387db22ba031_16869
uprobes netconsole configfs nfs lockd fscache nfs_acl auth_rpcgss sco bnep
l2cap bluetooth sunrpc rfkill ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6
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wcohen at redhat dot com | 5 Jul 2011 17:46
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[Bug runtime/12947] Use of hardware watchpoint causing oops

http://sourceware.org/bugzilla/show_bug.cgi?id=12947

--- Comment #4 from William Cohen <wcohen at redhat dot com> 2011-07-05 15:46:31 UTC ---
The 2011-06-29 15:56 UTC patch allows systemtap to exit more gracefully when
unable to register the hw_breakpoint probe. Need to be root when using the
hw_breakpoint.

However, there still issues when systemtap attempts to use the hw_breakpoints.
Will attach log of back trace in a moment.

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wcohen at redhat dot com | 5 Jul 2011 18:00
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[Bug runtime/12947] Use of hardware watchpoint causing oops

http://sourceware.org/bugzilla/show_bug.cgi?id=12947

--- Comment #5 from William Cohen <wcohen at redhat dot com> 2011-07-05 16:00:26 UTC ---
Created attachment 5834
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5834
oops when using hw_breakpoint

The output was generated with

/home/wcohen/systemtap_write/install/bin/stap -v hwkbrpt_sample.stp pid_max
Pass 1: parsed user script and 76 library script(s) using
25000virt/13840res/2568shr kb, in 410usr/30sys/927real ms.
Pass 2: analyzed script: 1 probe(s), 1 function(s), 2 embed(s), 0 global(s)
using 25276virt/14428res/2836shr kb, in 20usr/0sys/85real ms.
Pass 3: using cached
/root/.systemtap/cache/4a/stap_4a5b6a0564c3a5f41b9730f6cd92e255_1130.c
Pass 4: using cached
/root/.systemtap/cache/4a/stap_4a5b6a0564c3a5f41b9730f6cd92e255_1130.ko
Pass 5: starting run.
WARNING: Hwbkpt probe kernel.data("pid_max").length(1).rw: registration error
-902930368, addr   (null), name pid_max
ERROR: probe kernel.data("pid_max").length(1).rw registration error (rc
-902930368)
Pass 5: run completed in 10usr/60sys/516real ms.
Pass 5: run failed.  Try again with another '--vp 00001' option.

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