Merge branch 'master' of git://sources.redhat.com/git/systemtap

Conflicts:

	configure

23 files changed, 239 insertions, 107 deletions

diff --git a/testsuite/buildok/twentysix.stp b/testsuite/buildok/twentysix.stp
deleted file mode 100755
index 3fb7526f..00000000
--- a/testsuite/buildok/twentysix.stp
+++ /dev/null
@@ -1,7 +0,0 @@
-#! stap -up4
-
-global a
-probe begin
-{
- a [1,2,3,4,5,6] = 0
-}
diff --git a/testsuite/lib/stap_run.exp b/testsuite/lib/stap_run.exp
index a4beaa12..3043eeed 100644
--- a/testsuite/lib/stap_run.exp
+++ b/testsuite/lib/stap_run.exp
@@ -30,6 +30,7 @@ proc stap_run { TEST_NAME {LOAD_GEN_FUNCTION ""} {OUTPUT_CHECK_STRING ""} args }
     if [file readable $test_file_name] {
         lappend cmd $test_file_name
     }
+    send_log "executing: $cmd\n"
     eval spawn $cmd
     expect {
 	-timeout 180
diff --git a/testsuite/lib/systemtap.exp b/testsuite/lib/systemtap.exp
index 554e88ed..5311be7b 100644
--- a/testsuite/lib/systemtap.exp
+++ b/testsuite/lib/systemtap.exp
@@ -16,6 +16,16 @@ proc use_server_p {} {
 }
 
 
+proc utrace_p {} {
+    set path "/proc/kallsyms"
+    if {! [catch {exec grep -q utrace_attach $path} dummy]} {
+        return 1
+    } else {
+        return 0
+    }
+}
+
+
 proc print_systemtap_version {} {
     set version [exec /bin/uname -r]
     set location "/boot/vmlinux-$version"
diff --git a/testsuite/systemtap.base/bz5274.exp b/testsuite/systemtap.base/bz5274.exp
index 92441e9e..2f76a43f 100755
--- a/testsuite/systemtap.base/bz5274.exp
+++ b/testsuite/systemtap.base/bz5274.exp
@@ -17,14 +17,7 @@ if {! [installtest_p]} {
     return
 }
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-# copy from utrace_p5.exp
-set utrace_support_found 0
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     catch {exec rm -f $test}
     untested "$test -p5"
     return
diff --git a/testsuite/systemtap.base/bz6850.exp b/testsuite/systemtap.base/bz6850.exp
index b96ed95c..32ecdaf5 100644
--- a/testsuite/systemtap.base/bz6850.exp
+++ b/testsuite/systemtap.base/bz6850.exp
@@ -3,14 +3,7 @@ set test bz6850
 catch {exec gcc -g -o bz6850 $srcdir/$subdir/bz6850.c} err
 if {$err == "" && [file exists bz6850]} then { pass "$test compile" } else { fail "$test compile" }
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-# copy from utrace_p5.exp
-set utrace_support_found 0
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     catch {exec rm -f $test}
     untested "$test -p4"
     untested "$test -p5"
diff --git a/testsuite/systemtap.base/itrace.exp b/testsuite/systemtap.base/itrace.exp
index e215bfe7..5da0dfaf 100644
--- a/testsuite/systemtap.base/itrace.exp
+++ b/testsuite/systemtap.base/itrace.exp
@@ -2,7 +2,6 @@
 
 
 # Initialize variables
-set utrace_support_found 0
 set exepath "[pwd]/ls_[pid]"
 
 set itrace1_script {
@@ -48,6 +47,26 @@ set itrace2_script {
 }
 set itrace2_script_output "itraced = 5\r\n"
 
+set itrace3_script {
+    global branches = 0
+    probe begin
+    {
+        printf("systemtap starting probe\n")
+    }
+    probe process("%s").insn.block
+    {
+        branches += 1
+        if (branches == 5)
+                exit()
+    }
+
+
+    probe end { printf("systemtap ending probe\n")
+          printf("itraced block mode = %%d\n", branches)
+    }
+}
+set itrace3_script_output "itraced block mode = 5\r\n"
+
 
 # Set up our own copy of /bin/ls, to make testing for a particular
 # executable easy.  We can't use 'ln' here, since we might be creating
@@ -72,14 +91,8 @@ proc run_ls_5_sec {} {
 }
 
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-
 set TEST_NAME "itrace1"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested $TEST_NAME
@@ -90,7 +103,7 @@ if {$utrace_support_found == 0} {
 
 
 set TEST_NAME "itrace2"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested $TEST_NAME
@@ -99,5 +112,16 @@ if {$utrace_support_found == 0} {
     stap_run $TEST_NAME run_ls_5_sec $itrace2_script_output -e $script
 }
 
+set TEST_NAME "itrace3"
+if {![utrace_p]} {
+    untested "$TEST_NAME : no kernel utrace support found"
+} elseif {![installtest_p]} {
+    untested $TEST_NAME
+} else {
+    send_log "ATTENTION: if arch_has_block_step is not defined for this arch, this testcase will fail\n"
+    set script [format $itrace3_script $exepath]
+    stap_run $TEST_NAME run_ls_5_sec $itrace3_script_output -e $script
+}
+
 # Cleanup
 exec rm -f $exepath
diff --git a/testsuite/systemtap.base/labels.exp b/testsuite/systemtap.base/labels.exp
index 6db81c54..2f79a502 100644
--- a/testsuite/systemtap.base/labels.exp
+++ b/testsuite/systemtap.base/labels.exp
@@ -1,14 +1,6 @@
 set test "labels"
 if {![installtest_p]} {untested $test; return}
-
-# Try to find utrace_attach symbol in /proc/kallsyms
-# copy from utrace_p5.exp
-set utrace_support_found 0
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-if {$utrace_support_found == 0} { untested "$test"; return }
+if {![utrace_p]} { untested $test; return }
 
 # Compile a C program to use as the user-space probing target
 set label_srcpath "[pwd]/labels.c"
diff --git a/testsuite/systemtap.base/sdt.exp b/testsuite/systemtap.base/sdt.exp
index 46fa5a28..c3aed91e 100644
--- a/testsuite/systemtap.base/sdt.exp
+++ b/testsuite/systemtap.base/sdt.exp
@@ -36,7 +36,7 @@ if { $res != "" } {
     pass "compiling $test.c $extra_flag"
 }
 
-if {[installtest_p]} {
+if {[installtest_p] && [utrace_p]} {
   stap_run3 "$test $extra_flag" $srcdir/$subdir/$test.stp $testprog -c ./$testprog
 } else {
   untested "$test $extra_flag"
@@ -61,7 +61,7 @@ if { $res != "" } {
     pass "compiling $test.c c++ $extra_flag"
 }
 
-if {[installtest_p]} {
+if {[installtest_p] && [utrace_p]} {
   stap_run3 "$test c++ $extra_flag" $srcdir/$subdir/$test.stp $testprog -c ./$testprog
 } else {
   untested "$test c++ $extra_flag"
diff --git a/testsuite/systemtap.base/static_uprobes.exp b/testsuite/systemtap.base/static_uprobes.exp
index 820626b8..07ff83e9 100644
--- a/testsuite/systemtap.base/static_uprobes.exp
+++ b/testsuite/systemtap.base/static_uprobes.exp
@@ -124,15 +124,7 @@ if { $res != "" } {
 }
 
 if {![installtest_p]} {untested $test; return}
-
-# Try to find utrace_attach symbol in /proc/kallsyms
-# copy from utrace_p5.exp
-set utrace_support_found 0
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$test"
     catch {exec rm -f $sup_srcpath}
     return
@@ -196,7 +188,7 @@ set ok 0
 spawn stap -l "process(\"./sdt_types.x\").mark(\"*\")"
 expect {
     -timeout 180
-    -re {mark\(\".*\"\)} { incr ok; exp_continue }
+    -re {mark\(\"[a-z_]+\"\)} { incr ok; exp_continue }
     timeout { fail "$test C (timeout)" }
     eof { }
 }
diff --git a/testsuite/systemtap.base/uprobes.exp b/testsuite/systemtap.base/uprobes.exp
index 89250e7b..6344cbf0 100644
--- a/testsuite/systemtap.base/uprobes.exp
+++ b/testsuite/systemtap.base/uprobes.exp
@@ -18,14 +18,7 @@ if [file exists $path] then { pass "$test prep" } else { fail "$test prep" }
 catch {exec gcc -g -o jennie jennie.c} err
 if {$err == "" && [file exists jennie]} then { pass "$test compile" } else { fail "$test compile" }
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-# copy from utrace_p5.exp
-set utrace_support_found 0
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$test -p4"; untested "$test -p5"
     catch {exec rm -f jennie.c jennie}
     return
diff --git a/testsuite/systemtap.base/uprobes_lib.exp b/testsuite/systemtap.base/uprobes_lib.exp
index ae1b72e8..63ef957a 100644
--- a/testsuite/systemtap.base/uprobes_lib.exp
+++ b/testsuite/systemtap.base/uprobes_lib.exp
@@ -10,21 +10,23 @@ set testflags "additional_flags=-g additional_flags=-O"
 set testlibflags "$testflags additional_flags=-fPIC additional_flags=-shared"
 set maintestflags "$testflags additional_flags=-L$testlibdir additional_flags=-l$testlibname additional_flags=-Wl,-rpath,$testlibdir"
 
-# Only run on make installcheck
-if {! [installtest_p]} { untested "$test"; return }
-
 # Compile our test program and library.
 set res [target_compile $testsrclib $testso executable $testlibflags]
 if { $res != "" } {
     verbose "target_compile for $testso failed: $res" 2
-    fail "unable to compile $testsrclib"
+    fail "$test compile $testsrclib"
     return
+} else {
+    pass "$test compile $testsrclib"
 }
+
 set res [target_compile $testsrc $testexe executable $maintestflags]
 if { $res != "" } {
     verbose "target_compile failed: $res" 2
-    fail "unable to compile $testsrc"
+    fail "$test compile $testsrc"
     return
+} else {
+    pass "$test compile $testsrc"
 }
 
 # XXX main_func needs another/extra test. Disabled for now.
@@ -33,6 +35,9 @@ if { $res != "" } {
 # lib_func}
 set ::result_string {lib_func}
 
+# Only run on make installcheck
+if {! [installtest_p]} { untested "$test"; return }
+if {! [utrace_p]} { untested $test; return }
 stap_run2 $srcdir/$subdir/$test.stp -c $testexe
 
 #exec rm -f $testexe $testso
diff --git a/testsuite/systemtap.base/utrace_p4.exp b/testsuite/systemtap.base/utrace_p4.exp
index 1467d9c8..8d323a8a 100644
--- a/testsuite/systemtap.base/utrace_p4.exp
+++ b/testsuite/systemtap.base/utrace_p4.exp
@@ -7,8 +7,6 @@
 # utrace doesn't exist in the kernel, marks the tests as 'untested'.
 
 # Initialize variables
-set utrace_support_found 0
-
 set begin_script {"probe process(\"/bin/ls\").begin { print(\"ls begin\") }"}
 set end_script {"probe process(\"/bin/ls\").end { print(\"ls end\") }"}
 set syscall_script {"probe process(\"/bin/ls\").syscall { printf(\"|%d\", \$syscall) }"}
@@ -24,18 +22,12 @@ set pid_syscall_return_script {"probe process(123).syscall.return { printf(\"|%d
 set pid_thread_begin_script {"probe process(123).thread.begin { print(\"123 thread.begin\") }"}
 set pid_thread_end_script {"probe process(123).thread.end { print(\"123 thread.end\") }"}
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-
 #
 # Do some utrace compile tests.
 #
 
 set TEST_NAME "UTRACE_P4_01"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a begin script using a path
@@ -43,7 +35,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_01_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a begin script using a pid
@@ -51,7 +43,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_02"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a end script using a path
@@ -59,7 +51,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_02_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a end script using a pid
@@ -67,7 +59,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_03"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a syscall script using a path
@@ -75,7 +67,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_03_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a syscall script using a pid
@@ -83,7 +75,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_04"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a syscall return script using a path
@@ -91,7 +83,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_04_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling a syscall return script using a pid
@@ -99,7 +91,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_05"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling an thread.begin script using a path
@@ -107,7 +99,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_05_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling an thread.begin script using a pid
@@ -115,7 +107,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_06"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling an thread.end script using a path
@@ -123,7 +115,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_06_pid"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling an thread.end script using a pid
@@ -131,7 +123,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P4_07"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } else {
     # Try compiling an system-wide begin script
diff --git a/testsuite/systemtap.base/utrace_p5.exp b/testsuite/systemtap.base/utrace_p5.exp
index 33281350..3d432dc3 100644
--- a/testsuite/systemtap.base/utrace_p5.exp
+++ b/testsuite/systemtap.base/utrace_p5.exp
@@ -1,7 +1,6 @@
 # Utrace run (pass 5) tests.
 
 # Initialize variables
-set utrace_support_found 0
 set exepath "[pwd]/cat_[pid]"
 set multi_srcpath "$srcdir/systemtap.base/utrace_p5_multi.c"
 set multi_exepath "[pwd]/utrace_p5_multi_[pid]"
@@ -90,12 +89,6 @@ set bz6841_script {
 }
 set bz6841_script_output ".+ issues syscall \\d+ times\r\n"
 
-# Try to find utrace_attach symbol in /proc/kallsyms
-set path "/proc/kallsyms"
-if {! [catch {exec grep -q utrace_attach $path} dummy]} {
-    set utrace_support_found 1
-}
-
 # Set up our own copy of /bin/cat, to make testing for a particular
 # executable easy.  We can't use 'ln' here, since we might be creating
 # a cross-device link.  We can't use 'ln -s' here, since the kernel
@@ -138,7 +131,7 @@ proc run_utrace_p5_multi {} {
 }
 
 set TEST_NAME "UTRACE_P5_01"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -148,7 +141,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_02"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -158,7 +151,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_03"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -168,7 +161,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_04"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -178,7 +171,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_05"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -189,7 +182,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_06"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
@@ -200,7 +193,7 @@ if {$utrace_support_found == 0} {
 }
 
 set TEST_NAME "UTRACE_P5_07"
-if {$utrace_support_found == 0} {
+if {![utrace_p]} {
     untested "$TEST_NAME : no kernel utrace support found"
 } elseif {![installtest_p]} {
     untested "$TEST_NAME"
diff --git a/testsuite/systemtap.context/args.tcl b/testsuite/systemtap.context/args.tcl
index 7cb79cdf..cffaeaef 100644
--- a/testsuite/systemtap.context/args.tcl
+++ b/testsuite/systemtap.context/args.tcl
@@ -1,6 +1,6 @@
 spawn stap $srcdir/$subdir/args.stp
 expect {
-    -timeout 240
+    -timeout 60
     "READY" {
 	exec echo 1 > /proc/stap_test_cmd
 	expect {
diff --git a/testsuite/systemtap.context/backtrace.tcl b/testsuite/systemtap.context/backtrace.tcl
index ca60c369..6edda812 100644
--- a/testsuite/systemtap.context/backtrace.tcl
+++ b/testsuite/systemtap.context/backtrace.tcl
@@ -8,7 +8,7 @@ set m6 0
 spawn stap -DMAXSTRINGLEN=256 $srcdir/$subdir/backtrace.stp
 #exp_internal 1
 expect {
-    -timeout 240
+    -timeout 60
     "Systemtap probe: begin\r\n" {
 	pass "backtrace of begin probe"
 	exec echo 0 > /proc/stap_test_cmd
diff --git a/testsuite/systemtap.context/context.exp b/testsuite/systemtap.context/context.exp
index 010db445..cec09b29 100644
--- a/testsuite/systemtap.context/context.exp
+++ b/testsuite/systemtap.context/context.exp
@@ -80,6 +80,7 @@ if {[build_modules] == 0} {
 }
 
 foreach test $testlist {
+    send_log "sourcing: $srcdir/$subdir/$test.tcl\n"
     source $srcdir/$subdir/$test.tcl
 }
 
diff --git a/testsuite/systemtap.context/num_args.tcl b/testsuite/systemtap.context/num_args.tcl
index 7d12b433..62ac8dd3 100644
--- a/testsuite/systemtap.context/num_args.tcl
+++ b/testsuite/systemtap.context/num_args.tcl
@@ -3,7 +3,7 @@ foreach arglist $arglists {
 set tag [concat numeric $arglist]
 eval spawn stap $arglist $srcdir/$subdir/num_args.stp
 expect {
-    -timeout 240
+    -timeout 60
     "READY" {
 	exec echo 1 > /proc/stap_test_cmd
 	expect {
diff --git a/testsuite/systemtap.context/pid.tcl b/testsuite/systemtap.context/pid.tcl
index a2c091f1..70a87345 100644
--- a/testsuite/systemtap.context/pid.tcl
+++ b/testsuite/systemtap.context/pid.tcl
@@ -2,7 +2,7 @@ set tests [list execname pexecname pid ppid tid uid euid gid egid]
 spawn stap $srcdir/$subdir/pid.stp
 #exp_internal 1
 expect {
-    -timeout 240
+    -timeout 60
     "READY" {
 	set pid [exec echo 1 > /proc/stap_test_cmd &]
 	set ppid {[0-9]*}
diff --git a/testsuite/systemtap.context/usymbols.c b/testsuite/systemtap.context/usymbols.c
new file mode 100644
index 00000000..7c590724
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols.c
@@ -0,0 +1,39 @@
+/* usymbol test case
+ * Copyright (C) 2008, Red Hat Inc.
+ *                                                          
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ *
+ * Uses signal to tranfer user space addresses into the kernel where a
+ * probe on sigaction will extract them and produce the symbols.  To
+ * poke into the executable we get the sa_handler from the main executable,
+ * and then the library through calling signal.
+ *
+ * FIXME. We call into the library to get the right symbol. If we
+ * register the handler from the main executable. We need to handle
+ * @plt symbols (setting a handler in the main executable that is in a
+ * shared library will have the @plt address, not the address inside
+ * the shared library).
+ */
+
+#include <signal.h>
+typedef void (*sighandler_t)(int);
+
+// function from our library
+int lib_main (void);
+
+void
+main_handler (int signum)
+{
+  /* dummy handler, just used for the address... */
+}
+
+int
+main (int argc, char *argv[], char *envp[])
+{
+  // Use SIGFPE since we never expect that to be triggered.
+  signal(SIGFPE, main_handler);
+  lib_main();
+}
diff --git a/testsuite/systemtap.context/usymbols.exp b/testsuite/systemtap.context/usymbols.exp
new file mode 100644
index 00000000..82f68b67
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols.exp
@@ -0,0 +1,83 @@
+set test "./usymbols"
+set testpath "$srcdir/$subdir"
+set testsrc  "$testpath/usymbols.c"
+set testsrclib  "$testpath/usymbols_lib.c"
+set testexe  "[pwd]/usymbols"
+set testlibname  "usymbols"
+set testlibdir "[pwd]"
+set testso  "$testlibdir/lib${testlibname}.so"
+set testflags "additional_flags=-g additional_flags=-O"
+set testlibflags "testflags additional_flags=-fPIC additional_flags=-shared"
+set maintestflags "$testflags additional_flags=-L$testlibdir additional_flags=-l$testlibname additional_flags=-Wl,-rpath,$testlibdir"
+
+# Only run on make installcheck and utrace present.
+if {! [installtest_p]} { untested "$test"; return }
+if {! [utrace_p]} { untested "$test"; return }
+
+# Compile our test program and library.
+set res [target_compile $testsrclib $testso executable $testlibflags]
+if { $res != "" } {
+    verbose "target_compile for $testso failed: $res" 2
+    fail "unable to compile $testsrclib"
+    return
+}
+set res [target_compile $testsrc $testexe executable $maintestflags]
+if { $res != "" } {
+    verbose "target_compile failed: $res" 2
+    fail "unable to compile $testsrc"
+    return
+}
+
+# We need the execname() trick to work around (the workaround of) PR6964
+# otherwise we get also the rt_sigactions of stapio. Get the handler
+# (comes from the executable or the library).
+set testscript {
+    probe syscall.rt_sigaction {
+      if (pid() == target() && execname() == "%s") {
+	  handler = $act->sa_handler;
+	  printf("handler: %%s\n", symbolname(handler));
+      }
+    }
+    /* track through uprobes, so as to make sure we have the symbols */
+    probe process("%s").function("*") { printf(""); }
+}
+
+set output {handler: main_handler
+handler: lib_handler}
+
+# Got to run stap with both the exe and the libraries used as -d args.
+# XXX Note how we need the fully resolved (absolute) path...
+set script [format $testscript usymbols $testexe]
+catch {eval exec [concat ldd $testexe | grep $testlibname]} libpath
+set libpath [lindex [split $libpath " "] 2]
+send_log "libpath: $libpath\n"
+if {[string equal "link" [file type $libpath]]} {
+    set libpath [file join [file dirname $libpath] [file readlink $libpath]]
+}
+send_log "libpath: $libpath\n"
+
+# XXX Cheat, explicitly add STP_NEED_VMA_TRACKER
+set cmd [concat stap -DSTP_NEED_VMA_TRACKER -d $libpath -d $testexe -c $testexe -e {$script}]
+send_log "cmd: $cmd\n"
+catch {eval exec $cmd} res
+send_log "cmd output: $res\n"
+
+set n 0
+set m [llength [split $output "\n"]]
+set expected [split $output "\n"]
+foreach line [split $res "\n"] {
+    if {![string equal $line [lindex $expected $n]]} {
+      fail usymbols
+      send_log "line [expr $n + 1]: expected \"[lindex $expected $n]\", "
+      send_log "Got \"$line\"\n"
+      return
+    }
+    incr n
+}
+if { $n != $m } {
+  fail usymbols
+  send_log "Got \"$n\" lines, expected \"$m\" lines\n"
+} else {
+  pass usymbols
+}
+exec rm -f $testexe $testso
diff --git a/testsuite/systemtap.context/usymbols_lib.c b/testsuite/systemtap.context/usymbols_lib.c
new file mode 100644
index 00000000..faccb39b
--- /dev/null
+++ b/testsuite/systemtap.context/usymbols_lib.c
@@ -0,0 +1,29 @@
+/* usymbol test case - library helper
+ * Copyright (C) 2008, Red Hat Inc.
+ *                                                          
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ *
+ * Uses signal to tranfer user space addresses into the kernel where a
+ * probe on sigaction will extract them and produce the symbols.  To
+ * poke into the executable we get the sa_handler set through signal
+ * from this library.
+ */
+
+#include <signal.h>
+typedef void (*sighandler_t)(int);
+
+void
+lib_handler (int signum)
+{
+  /* dummy handler, just used for the address... */
+}
+
+void
+lib_main ()
+{
+  // Use SIGFPE since we never expect that to be triggered.
+  signal(SIGFPE, lib_handler);
+}
diff --git a/testsuite/systemtap.pass1-4/buildok.exp b/testsuite/systemtap.pass1-4/buildok.exp
index 08d50fb5..12275c1d 100644
--- a/testsuite/systemtap.pass1-4/buildok.exp
+++ b/testsuite/systemtap.pass1-4/buildok.exp
@@ -6,12 +6,12 @@ foreach file [lsort [glob -nocomplain $srcdir/$self/*.stp]] {
     # some tests are known to fail.
     switch $test {
         buildok/perfmon01.stp {setup_kfail 909 *-*-*}
-        buildok/twentysix.stp {setup_kfail 4105 *-*-*}
         buildok/twentyseven.stp {setup_kfail 4166 *-*-*}
         buildok/sched_test.stp {setup_kfail 1155 *-*-*}
         buildok/process_test.stp {setup_kfail 1155 *-*-*}
         buildok/rpc-all-probes.stp {setup_kfail 4413 *-*-*}
         buildok/nfs-all-probes.stp {setup_kfail 4413 *-*-*}
+        buildok/per-process-syscall.stp {if {![utrace_p]} { setup_kfail 9999 *-*-*} }
     }
     if {$rc == 0} { pass $test } else { fail $test }
 }
diff --git a/testsuite/systemtap.server/server.exp b/testsuite/systemtap.server/server.exp
index c2c60b97..d2dd0f16 100644
--- a/testsuite/systemtap.server/server.exp
+++ b/testsuite/systemtap.server/server.exp
@@ -16,7 +16,6 @@ foreach file [lsort [glob -nocomplain $srcdir/$self/*.stp]] {
     # some tests are known to fail.
     switch $test {
         "buildok/perfmon01.stp with server" {setup_kfail 909 *-*-*}
-        "buildok/twentysix.stp with server" {setup_kfail 4105 *-*-*}
         "buildok/twentyseven.stp with server" {setup_kfail 4166 *-*-*}
         "buildok/sched_test.stp with server" {setup_kfail 1155 *-*-*}
         "buildok/process_test.stp with server" {setup_kfail 1155 *-*-*}