[Bug translator/13155] New: tracepoints probe breakage

[Bug translator/13155] New: tracepoints probe breakage

[phan at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

             Bug #: 13155
           Summary: tracepoints probe breakage
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: phan@redhat.com
    Classification: Unclassified


I notice that ext3 and jbd tracepoints aren't available for current systemtap:

# stap -p4 -e 'probe kernel.trace("*") {}' -w --vp 04
Pass 2: getting a tracepoint query for 1 headers:
  /lib/modules/2.6.32-195.el6.ppc64/build/include/trace/events/ext3.h
Running make -C /lib/modules/2.6.32-195.el6.ppc64/build
M=/tmp/stapf7FP1Y/tracequery_kmod_3 modules ARCH=powerpc V=1
make: Entering directory `/usr/src/kernels/2.6.32-195.el6.ppc64'
test -e include/linux/autoconf.h -a -e include/config/auto.conf || (           
\
        echo;                                                           \
        echo "  ERROR: Kernel configuration is invalid.";               \
        echo "         include/linux/autoconf.h or include/config/auto.conf are
missing.";      \
        echo "         Run 'make oldconfig && make prepare' on kernel src to
fix it.";  \
        echo;                                                           \
        /bin/false)
mkdir -p /tmp/stapf7FP1Y/tracequery_kmod_3/.tmp_versions ; rm -f
/tmp/stapf7FP1Y/tracequery_kmod_3/.tmp_versions/*
make -f scripts/Makefile.build obj=/tmp/stapf7FP1Y/tracequery_kmod_3
  gcc -m64 -Wp,-MD,/tmp/stapf7FP1Y/tracequery_kmod_3/.tracequery_kmod_3.o.d 
-nostdinc -isystem /usr/lib/gcc/ppc64-redhat-linux/4.4.6/include -Iinclude 
-I/usr/src/kernels/2.6.32-195.el6.ppc64/arch/powerpc/include -include
include/linux/autoconf.h -D__KERNEL__ -Iarch/powerpc -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -O2 -msoft-float -pipe -Iarch/powerpc
-mminimal-toc -mtraceback=none -mcall-aixdesc -mcpu=power4 -mno-altivec
-mno-spe -mspe=no -funit-at-a-time -mno-string -Wa,-maltivec
-Wframe-larger-than=2048 -fno-stack-protector -Wno-unused-but-set-variable
-fomit-frame-pointer -g -Wdeclaration-after-statement -Wno-pointer-sign
-fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -g
-Wno-implicit-function-declaration -Werror
-I/usr/src/debug////////kernel-2.6.32-195.el6/linux-2.6.32-195.el6.ppc64 
-DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(tracequery_kmod_3)"
 -D"KBUILD_MODNAME=KBUILD_STR(tracequery_kmod_3)" -D"DEBUG_HASH=26"
-D"DEBUG_HASH2=39" -c -o
/tmp/stapf7FP1Y/tracequery_kmod_3/.tmp_tracequery_kmod_3.o
/tmp/stapf7FP1Y/tracequery_kmod_3/tracequery_kmod_3.c
cc1: warnings being treated as errors
In file included from /tmp/stapf7FP1Y/tracequery_kmod_3/tracequery_kmod_3.c:29:
include/trace/events/ext3.h:450: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
include/trace/events/ext3.h:450: error: its scope is only this definition or
declaration, which is probably not what you want
include/trace/events/ext3.h:473: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
include/trace/events/ext3.h:519: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
make[1]: *** [/tmp/stapf7FP1Y/tracequery_kmod_3/tracequery_kmod_3.o] Error 1
make: *** [_module_/tmp/stapf7FP1Y/tracequery_kmod_3] Error 2
make: Leaving directory `/usr/src/kernels/2.6.32-195.el6.ppc64'
Spawn waitpid result (0x200): 2
Warning: make exited with status: 2

and

Pass 2: getting a tracepoint query for 1 headers:
  /lib/modules/2.6.32-195.el6.ppc64/build/include/trace/events/jbd.h
Running make -C /lib/modules/2.6.32-195.el6.ppc64/build
M=/tmp/stapf7FP1Y/tracequery_kmod_7 modules ARCH=powerpc V=1
make: Entering directory `/usr/src/kernels/2.6.32-195.el6.ppc64'
test -e include/linux/autoconf.h -a -e include/config/auto.conf || (           
\
        echo;                                                           \
        echo "  ERROR: Kernel configuration is invalid.";               \
        echo "         include/linux/autoconf.h or include/config/auto.conf are
missing.";      \
        echo "         Run 'make oldconfig && make prepare' on kernel src to
fix it.";  \
        echo;                                                           \
        /bin/false)
mkdir -p /tmp/stapf7FP1Y/tracequery_kmod_7/.tmp_versions ; rm -f
/tmp/stapf7FP1Y/tracequery_kmod_7/.tmp_versions/*
make -f scripts/Makefile.build obj=/tmp/stapf7FP1Y/tracequery_kmod_7
  gcc -m64 -Wp,-MD,/tmp/stapf7FP1Y/tracequery_kmod_7/.tracequery_kmod_7.o.d 
-nostdinc -isystem /usr/lib/gcc/ppc64-redhat-linux/4.4.6/include -Iinclude 
-I/usr/src/kernels/2.6.32-195.el6.ppc64/arch/powerpc/include -include
include/linux/autoconf.h -D__KERNEL__ -Iarch/powerpc -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -O2 -msoft-float -pipe -Iarch/powerpc
-mminimal-toc -mtraceback=none -mcall-aixdesc -mcpu=power4 -mno-altivec
-mno-spe -mspe=no -funit-at-a-time -mno-string -Wa,-maltivec
-Wframe-larger-than=2048 -fno-stack-protector -Wno-unused-but-set-variable
-fomit-frame-pointer -g -Wdeclaration-after-statement -Wno-pointer-sign
-fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -g
-Wno-implicit-function-declaration -Werror
-I/usr/src/debug////////kernel-2.6.32-195.el6/linux-2.6.32-195.el6.ppc64 
-DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(tracequery_kmod_7)"
 -D"KBUILD_MODNAME=KBUILD_STR(tracequery_kmod_7)" -D"DEBUG_HASH=34"
-D"DEBUG_HASH2=39" -c -o
/tmp/stapf7FP1Y/tracequery_kmod_7/.tmp_tracequery_kmod_7.o
/tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c
In file included from include/trace/events/jbd.h:7,
                 from /tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c:29:
include/linux/jbd.h:102: error: redefinition of typedef ‘handle_t’
include/linux/jbd2.h:96: note: previous declaration of ‘handle_t’ was here
include/linux/jbd.h:116: error: redefinition of typedef ‘journal_t’
include/linux/jbd2.h:110: note: previous declaration of ‘journal_t’ was here
include/linux/jbd.h:143: error: redefinition of ‘struct journal_header_s’
include/linux/jbd.h:147: error: conflicting types for ‘journal_header_t’
include/linux/jbd2.h:141: note: previous declaration of ‘journal_header_t’ was
here
include/linux/jbd.h:154: error: redefinition of ‘struct journal_block_tag_s’
include/linux/jbd.h:157: error: conflicting types for ‘journal_block_tag_t’
include/linux/jbd2.h:179: note: previous declaration of ‘journal_block_tag_t’
was here
include/linux/jbd.h:181: error: redefinition of ‘struct journal_superblock_s’
include/linux/jbd.h:223: error: conflicting types for ‘journal_superblock_t’
include/linux/jbd2.h:248: note: previous declaration of ‘journal_superblock_t’
was here
In file included from include/trace/events/jbd.h:7,
                 from /tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c:29:
include/linux/jbd.h:268:1: error: "__journal_expect" redefined
In file included from
/usr/src/debug////////kernel-2.6.32-195.el6/linux-2.6.32-195.el6.ppc64/fs/ext4/ext4.h:22,
                 from /tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c:26:
include/linux/jbd2.h:299:1: error: this is the location of the previous
definition
include/linux/jbd.h:283: error: nested redefinition of ‘enum jbd_state_bits’
include/linux/jbd.h:283: error: redeclaration of ‘enum jbd_state_bits’
include/linux/jbd.h:285: error: redeclaration of enumerator ‘BH_JBD’
include/linux/jbd2.h:317: note: previous definition of ‘BH_JBD’ was here
include/linux/jbd.h:286: error: redeclaration of enumerator ‘BH_JWrite’
include/linux/jbd2.h:318: note: previous definition of ‘BH_JWrite’ was here
include/linux/jbd.h:287: error: redeclaration of enumerator ‘BH_Freed’
include/linux/jbd2.h:319: note: previous definition of ‘BH_Freed’ was here
include/linux/jbd.h:288: error: redeclaration of enumerator ‘BH_Revoked’
include/linux/jbd2.h:320: note: previous definition of ‘BH_Revoked’ was here
include/linux/jbd.h:289: error: redeclaration of enumerator ‘BH_RevokeValid’
include/linux/jbd2.h:321: note: previous definition of ‘BH_RevokeValid’ was
here
include/linux/jbd.h:290: error: redeclaration of enumerator ‘BH_JBDDirty’
include/linux/jbd2.h:322: note: previous definition of ‘BH_JBDDirty’ was here
include/linux/jbd.h:291: error: redeclaration of enumerator ‘BH_State’
include/linux/jbd2.h:323: note: previous definition of ‘BH_State’ was here
include/linux/jbd.h:292: error: redeclaration of enumerator ‘BH_JournalHead’
include/linux/jbd2.h:324: note: previous definition of ‘BH_JournalHead’ was
here
include/linux/jbd.h:293: error: redeclaration of enumerator ‘BH_Unshadow’
include/linux/jbd2.h:325: note: previous definition of ‘BH_Unshadow’ was here
include/linux/jbd.h:296: error: redefinition of ‘set_buffer_jbd’
include/linux/jbd2.h:329: note: previous definition of ‘set_buffer_jbd’ was
here
include/linux/jbd.h:296: error: redefinition of ‘clear_buffer_jbd’
include/linux/jbd2.h:329: note: previous definition of ‘clear_buffer_jbd’ was
here
include/linux/jbd.h:296: error: redefinition of ‘buffer_jbd’
include/linux/jbd2.h:329: note: previous definition of ‘buffer_jbd’ was here
include/linux/jbd.h:297: error: redefinition of ‘set_buffer_jwrite’
include/linux/jbd2.h:330: note: previous definition of ‘set_buffer_jwrite’ was
here
include/linux/jbd.h:297: error: redefinition of ‘clear_buffer_jwrite’
... ....
include/linux/jbd2.h:1286:1: error: this is the location of the previous
definition
In file included from include/trace/events/jbd.h:7,
                 from /tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c:29:
include/linux/jbd.h:1091:1: error: "BJ_Types" redefined
In file included from
/usr/src/debug////////kernel-2.6.32-195.el6/linux-2.6.32-195.el6.ppc64/fs/ext4/ext4.h:22,
                 from /tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.c:26:
include/linux/jbd2.h:1287:1: error: this is the location of the previous
definition
make[1]: *** [/tmp/stapf7FP1Y/tracequery_kmod_7/tracequery_kmod_7.o] Error 1
make: *** [_module_/tmp/stapf7FP1Y/tracequery_kmod_7] Error 2
make: Leaving directory `/usr/src/kernels/2.6.32-195.el6.ppc64'
Spawn waitpid result (0x200): 2
Warning: make exited with status: 2

Looks like the familiar problem of bug 9993.

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[Bug translator/13155] tracepoints probe breakage

[phan at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

--- Comment #1 from han pingtian <phan at redhat dot com> 2011-09-07 07:27:48 UTC ---
Created attachment 5920
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5920
patch v1

With this patch, I can get ext3 and jbd tracepoints with 'statp -l
'kernel.trace("*")''.

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[Bug translator/13155] tracepoints probe breakage

[mjw at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

Mark Wielaard <mjw at redhat dot com> changed:

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

--- Comment #2 from Mark Wielaard <mjw at redhat dot com> 2011-09-07 10:49:26 UTC ---
I cannot replicate this on x86_64. Is this ppc64 specific?

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[Bug translator/13155] tracepoints probe breakage

[phan at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

--- Comment #3 from han pingtian <phan at redhat dot com> 2011-09-08 05:42:27 UTC ---
(In reply to comment #2)
> I cannot replicate this on x86_64. Is this ppc64 specific?

This bug is occuring on all archs. I can replicate it on x86_64:

Pass 2: getting a tracepoint query for 1 headers:
/Warning: make exited with status: 2
Copying /tmp/stapobl4bG/tracequery_kmod_2/tracequery_kmod_2.ko to
/root/.systemtap/cache/a2/tracequery_a2a924989dc36ad014e5b9a5eb45172e_648.ko
Pass 2: getting a tracepoint query for 1 headers:
  /lib/modules/2.6.32-195.el6.x86_64/build/include/trace/events/ext3.h
Running make -C /lib/modules/2.6.32-195.el6.x86_64/build
M=/tmp/stapobl4bG/tracequery_kmod_3 modules ARCH=x86_64 V=1
make: Entering directory `/usr/src/kernels/2.6.32-195.el6.x86_64'
test -e include/linux/autoconf.h -a -e include/config/auto.conf || (           
\
        echo;                                                           \
        echo "  ERROR: Kernel configuration is invalid.";               \
        echo "         include/linux/autoconf.h or include/config/auto.conf are
missing.";      \
        echo "         Run 'make oldconfig && make prepare' on kernel src to
fix it.";  \
        echo;                                                           \
        /bin/false)
mkdir -p /tmp/stapobl4bG/tracequery_kmod_3/.tmp_versions ; rm -f
/tmp/stapobl4bG/tracequery_kmod_3/.tmp_versions/*
make -f scripts/Makefile.build obj=/tmp/stapobl4bG/tracequery_kmod_3
  gcc -Wp,-MD,/tmp/stapobl4bG/tracequery_kmod_3/.tracequery_kmod_3.o.d 
-nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/4.4.6/include -Iinclude 
-I/usr/src/kernels/2.6.32-195.el6.x86_64/arch/x86/include -include
include/linux/autoconf.h -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes
-Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -O2 -m64 -mtune=generic -mno-red-zone
-mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -fstack-protector
-DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -pipe -Wno-sign-compare
-fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow
-Wframe-larger-than=2048 -Wno-unused-but-set-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -g -pg -Wdeclaration-after-statement
-Wno-pointer-sign -fno-strict-overflow -fno-dwarf2-cfi-asm -fconserve-stack -g
-Wno-implicit-function-declaration -Werror
-I/usr/src/debug////////kernel-2.6.32-195.el6/linux-2.6.32-195.el6.x86_64 
-DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(tracequery_kmod_3)"
 -D"KBUILD_MODNAME=KBUILD_STR(tracequery_kmod_3)" -D"DEBUG_HASH=23"
-D"DEBUG_HASH2=46" -c -o
/tmp/stapobl4bG/tracequery_kmod_3/.tmp_tracequery_kmod_3.o
/tmp/stapobl4bG/tracequery_kmod_3/tracequery_kmod_3.c
cc1: warnings being treated as errors
In file included from /tmp/stapobl4bG/tracequery_kmod_3/tracequery_kmod_3.c:53:
include/trace/events/ext3.h:450: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
include/trace/events/ext3.h:450: error: its scope is only this definition or
declaration, which is probably not what you want
include/trace/events/ext3.h:473: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
include/trace/events/ext3.h:519: error: ‘struct ext3_reserve_window_node’
declared inside parameter list
make[1]: *** [/tmp/stapobl4bG/tracequery_kmod_3/tracequery_kmod_3.o] Error 1
make: *** [_module_/tmp/stapobl4bG/tracequery_kmod_3] Error 2
make: Leaving directory `/usr/src/kernels/2.6.32-195.el6.x86_64'
Spawn waitpid result (0x200): 2
Warning: make exited with status: 2

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[Bug translator/13155] tracepoints probe breakage

[mjw at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

--- Comment #4 from Mark Wielaard <mjw at redhat dot com> 2011-09-12 10:42:41 UTC ---
I am seeing the following error:

In file included from
/tmp/stapPG5S1M/tracequery_kmod_1/tracequery_kmod_1.c:146:
0:
include/trace/events/napi.h:12:1: error: redefinition of ‘stapprobe_napi_poll’
include/trace/events/napi.h:12:1: note: previous definition of
‘stapprobe_napi_poll’ was here
make[1]: *** [/tmp/stapPG5S1M/tracequery_kmod_1/tracequery_kmod_1.o] Error 1

But no others with systemtap git against 2.6.35.14-96.fc14.x86_64

Although I am only seeing jdb2 and ext4 probes, I assume ext3 and jdb probes
are different. Will try against another kernel.

Could you show the stap -l output expected so I can compare more easily?

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[Bug translator/13155] tracepoints probe breakage

[mjw at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

--- Comment #5 from Mark Wielaard <mjw at redhat dot com> 2011-09-12 10:54:21 UTC ---
Against 2.6.32-131.12.1.el6.x86_64 I get the same results as mentioned in
comment #4.

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[Bug translator/13155] tracepoints probe breakage

[phan at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

--- Comment #6 from han pingtian <phan at redhat dot com> 2011-09-13 04:22:35 UTC ---
Hi Mark,

Please see https://bugzilla.redhat.com/show_bug.cgi?id=696332 
https://bugzilla.redhat.com/show_bug.cgi?id=696332#c8 lists all ext3
tracepoints and https://bugzilla.redhat.com/show_bug.cgi?id=696332#c9 lists all
jbd tracepoints. Those new tracepoints were introduced in
kernel-2.6.32-182.el6. 

Sorry for the obscurness.

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[Bug translator/13155] conflicting tracepoint headers block stap -l / stap -p4

[fche at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

Frank Ch. Eigler <fche at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fche at redhat dot com
            Summary|tracepoints probe breakage  |conflicting tracepoint
                   |                            |headers block stap -l /
                   |                            |stap -p4

--- Comment #7 from Frank Ch. Eigler <fche at redhat dot com> 2011-09-30 20:46:17 UTC ---
Unfortunately attachment #1 is enough only to make the stap -l work.
Several tracepoint headers still conflict, which makes scripts like

   probe kernel.trace("*") {}

break during pass 4 due to inter-header conflicts.

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[Bug translator/13155] conflicting tracepoint headers block stap -l / stap -p4

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

Josh Stone <jistone at redhat dot com> changed:

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

--- Comment #8 from Josh Stone <jistone at redhat dot com> 2011-10-05 19:47:40 UTC ---
If we accept that the kernel will continue creating issues like this, then
we'll need to start segregating the tracepoint registration and callbacks into
separate compile units.  Those that come from the same tracepoint header could
still share, as an optimization, but they don't necessarily need to.

Our current generated code looks like this for trace("sys_enter"):

> #include <trace/events/syscalls.h>
> #ifdef DECLARE_TRACE_NOARGS
> #define STAP_TP_DATA   , NULL
> #define STAP_TP_PROTO  void *cb_data __attribute__ ((unused)),
> #else
> #define STAP_TP_DATA
> #define STAP_TP_PROTO
> #endif
> static void enter_tracepoint_probe_1(
>     STAP_TP_PROTO
>     struct pt_regs* __tracepoint_arg_regs,
>     long int __tracepoint_arg_id
>     )
> {
[... common entry boilerplate]
>   c->marker_name = "sys_enter";
>   c->probe_locals.probe_2904.__tracepoint_arg_regs = (int64_t)(intptr_t)__tracepoint_arg_regs;
>   c->probe_locals.probe_2904.__tracepoint_arg_id = (int64_t)__tracepoint_arg_id;
>   (*probe->ph) (c);
[... common exit boilerplate]
> }
> static int register_tracepoint_probe_1(void) {
>   return register_trace_sys_enter(enter_tracepoint_probe_1 STAP_TP_DATA);
> }
> static void unregister_tracepoint_probe_1(void) {
>   (void) unregister_trace_sys_enter(enter_tracepoint_probe_1 STAP_TP_DATA);
> }

The registration can easily be moved to a separate file, but enter_tracepoint
is a bit more complicated for mixing the tracepoint's typed arguments and
systemtap's context setup.  We can probably just split it so the arguments are
cast to int64_t ahead of time, something like:

In stap_HASH.c:
> static void stp_enter_tracepoint_probe_1(
>     int64_t __tracepoint_arg_regs,
>     int64_t __tracepoint_arg_id
>     )
> {
[... common entry boilerplate]
>   c->marker_name = "sys_enter";
>   c->probe_locals.probe_2904.__tracepoint_arg_regs = __tracepoint_arg_regs;
>   c->probe_locals.probe_2904.__tracepoint_arg_id = __tracepoint_arg_id;
>   (*probe->ph) (c);
[... common exit boilerplate]
> }

In stap_HASH_tracepoint_probe_1.c:
> static void enter_tracepoint_probe_1(
>     STAP_TP_PROTO
>     struct pt_regs* __tracepoint_arg_regs,
>     long int __tracepoint_arg_id
>     )
> {
>   stp_enter_tracepoint_probe_1((int64_t)(intptr_t)__tracepoint_arg_regs,
>                                (int64_t)__tracepoint_arg_id);
> }

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[Bug translator/13155] conflicting tracepoint headers block stap -l / stap -p4

[fche at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13155

Frank Ch. Eigler <fche at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|systemtap at sourceware dot |fche at redhat dot com
                   |org                         |

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