From: "mjw at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug uprobes/15972] core dump with process probes
Date: Fri, 20 Sep 2013 15:07:00 -0000 [thread overview]
Message-ID: <bug-15972-6586-eQjnWxS8K8@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-15972-6586@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=15972
--- Comment #4 from Mark Wielaard <mjw at redhat dot com> ---
Just looking whether this is stap or uprobes or ...?
Lets extract the address we use from the library:
$ objdump -t /usr/lib/debug/usr/lib64/libglib-2.0.so.0.3600.3.debug | grep
g_main_context_iterate
0000000000047f90 l F .text 00000000000001ef
g_main_context_iterate.isra.22
stap seems to use an address slightly after the start (skips the prologue of
the function): 47f90+18 = 47FA8
So put that into the raw uprobes/perf tracer thingy:
# echo "p:func_entry /usr/lib64/libglib-2.0.so.0.3600.3:0x0000000000047fa8" >>
/sys/kernel/debug/tracing/uprobe_events
And enable the tracer:
# echo 1 > /sys/kernel/debug/tracing/events/uprobes/enable
Oops, crashing processes... in dmesg:
[ 8241.097226] traps: gnome-shell[1114] general protection ip:7fffffffe080
sp:7fff9630b460 error:0
[ 8241.098619] traps: accounts-daemon[328] general protection ip:7fffffffe080
sp:7fffc4235b50 error:0
[ 8241.325253] traps: gdbus[962] general protection ip:7fffffffe080
sp:7f928e88cd80 error:0
[ 8241.325310] traps: gdbus[939] general protection ip:7fffffffe080
sp:7f4c90f6fdc0 error:0
[ 8241.325384] traps: upowerd[1056] general protection ip:7fffffffe080
sp:7fffd4bb5100 error:0
[ 8241.325525] traps: gdbus[364] general protection ip:7fffffffe080
sp:7f3e10d2fd80 error:0
[ 8241.325811] traps: modem-manager[396] general protection ip:7fffffffe080
sp:7fff383892b0 error:0
[ 8241.325900] traps: firewalld[312] general protection ip:7fffffffe080
sp:7fffeed136c0 error:0
[ 8241.326391] traps: gdbus[381] general protection ip:7fffffffe080
sp:7fcc07881d80 error:0
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next prev parent reply other threads:[~2013-09-20 15:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-20 10:23 [Bug uprobes/15972] New: " mjw at redhat dot com
2013-09-20 10:27 ` [Bug uprobes/15972] " mjw at redhat dot com
2013-09-20 10:39 ` mjw at redhat dot com
2013-09-20 14:45 ` mjw at redhat dot com
2013-09-20 15:07 ` mjw at redhat dot com [this message]
2013-09-20 18:27 ` fche at redhat dot com
2013-09-20 18:33 ` jistone at redhat dot com
2014-03-18 10:27 ` fche at redhat dot com
2014-05-16 0:03 ` fche at redhat dot com
2015-06-19 16:25 ` fche at redhat dot com
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