diff options
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/kprobe')
16 files changed, 147 insertions, 75 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc index 4604d2103c89..bb1eb5a7c64e 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/add_and_remove.tc @@ -4,10 +4,7 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -echo 0 > events/enable -echo > kprobe_events echo p:myevent _do_fork > kprobe_events grep myevent kprobe_events test -d events/kprobes/myevent echo > kprobe_events -clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc index bbc443a9190c..442c1a8c5edf 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/busy_check.tc @@ -4,12 +4,9 @@ [ -f kprobe_events ] || exit_unsupported -echo 0 > events/enable -echo > kprobe_events echo p:myevent _do_fork > kprobe_events test -d events/kprobes/myevent echo 1 > events/kprobes/myevent/enable echo > kprobe_events && exit_fail # this must fail echo 0 > events/kprobes/myevent/enable echo > kprobe_events # this must succeed -clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc index 8b43c6804fc3..bcdecf80a8f1 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args.tc @@ -4,13 +4,15 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -echo 0 > events/enable -echo > kprobe_events echo 'p:testprobe _do_fork $stack $stack0 +0($stack)' > kprobe_events -grep testprobe kprobe_events +grep testprobe kprobe_events | grep -q 'arg1=\$stack arg2=\$stack0 arg3=+0(\$stack)' test -d events/kprobes/testprobe + echo 1 > events/kprobes/testprobe/enable ( echo "forked") +grep testprobe trace | grep '_do_fork' | \ + grep -q 'arg1=0x[[:xdigit:]]* arg2=0x[[:xdigit:]]* arg3=0x[[:xdigit:]]*$' + echo 0 > events/kprobes/testprobe/enable echo "-:testprobe" >> kprobe_events clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_comm.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_comm.tc new file mode 100644 index 000000000000..15c1f70fcaf9 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_comm.tc @@ -0,0 +1,17 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event with comm arguments + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep -A1 "fetcharg:" README | grep -q "\$comm" || exit_unsupported # this is too old + +echo 'p:testprobe _do_fork comm=$comm ' > kprobe_events +grep testprobe kprobe_events | grep -q 'comm=$comm' +test -d events/kprobes/testprobe + +echo 1 > events/kprobes/testprobe/enable +( echo "forked") +grep testprobe trace | grep -q 'comm=".*"' + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc index 1ad70cdaf442..46e7744f8358 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc @@ -4,9 +4,6 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -echo 0 > events/enable -echo > kprobe_events - case `uname -m` in x86_64) ARG1=%di @@ -44,5 +41,3 @@ echo 1 > events/kprobes/testprobe/enable echo "p:test _do_fork" >> kprobe_events grep -qe "testprobe.* arg1=\"test\" arg2=\"test\"" trace -echo 0 > events/enable -echo > kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc new file mode 100644 index 000000000000..2b6dd33f9076 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc @@ -0,0 +1,39 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event symbol argument + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +SYMBOL="linux_proc_banner" + +if [ ! -f /proc/kallsyms ]; then + echo "Can not check the target symbol - please enable CONFIG_KALLSYMS" + exit_unresolved +elif ! grep "$SYMBOL\$" /proc/kallsyms; then + echo "Linux banner is not exported - please enable CONFIG_KALLSYMS_ALL" + exit_unresolved +fi + +: "Test get basic types symbol argument" +echo "p:testprobe_u _do_fork arg1=@linux_proc_banner:u64 arg2=@linux_proc_banner:u32 arg3=@linux_proc_banner:u16 arg4=@linux_proc_banner:u8" > kprobe_events +echo "p:testprobe_s _do_fork arg1=@linux_proc_banner:s64 arg2=@linux_proc_banner:s32 arg3=@linux_proc_banner:s16 arg4=@linux_proc_banner:s8" >> kprobe_events +if grep -q "x8/16/32/64" README; then + echo "p:testprobe_x _do_fork arg1=@linux_proc_banner:x64 arg2=@linux_proc_banner:x32 arg3=@linux_proc_banner:x16 arg4=@linux_proc_banner:x8" >> kprobe_events +fi +echo "p:testprobe_bf _do_fork arg1=@linux_proc_banner:b8@4/32" >> kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +grep "testprobe_[usx]:.* arg1=.* arg2=.* arg3=.* arg4=.*" trace +grep "testprobe_bf:.* arg1=.*" trace + +: "Test get string symbol argument" +echo "p:testprobe_str _do_fork arg1=@linux_proc_banner:string" > kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +RESULT=`grep "testprobe_str" trace | sed -e 's/.* arg1=\(.*\)/\1/'` + +RESULT=`echo $RESULT | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'` +ORIG=`cat /proc/version | sed -e 's/.* \((.*)\) \((.*)\) .*/\1 \2/'` +test "$RESULT" = "$ORIG" diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc index d026ff4e562f..6f0f19953193 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc @@ -6,9 +6,6 @@ grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue -echo 0 > events/enable -echo > kprobe_events - PROBEFUNC="vfs_read" GOODREG= BADREG= @@ -78,8 +75,11 @@ test_badarg "\$stackp" "\$stack0+10" "\$stack1-10" echo "r ${PROBEFUNC} \$retval" > kprobe_events ! echo "p ${PROBEFUNC} \$retval" > kprobe_events +# $comm was introduced in 4.8, older kernels reject it. +if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then : "Comm access" test_goodarg "\$comm" +fi : "Indirect memory access" test_goodarg "+0(${GOODREG})" "-0(${GOODREG})" "+10(\$stack)" \ @@ -100,5 +100,3 @@ test_badarg "${GOODREG}::${GOODTYPE}" "${GOODREG}:${BADTYPE}" \ test_goodarg "\$comm:string" "+0(\$stack):string" test_badarg "\$comm:x64" "\$stack:string" "${GOODREG}:string" - -echo > kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc index 2a1755bfc290..1bcb67dcae26 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc @@ -6,33 +6,45 @@ grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue -echo 0 > events/enable -echo > kprobe_events -enable_tracing - -echo 'p:testprobe _do_fork $stack0:s32 $stack0:u32 $stack0:x32 $stack0:b8@4/32' > kprobe_events -grep testprobe kprobe_events -test -d events/kprobes/testprobe - -echo 1 > events/kprobes/testprobe/enable -( echo "forked") -echo 0 > events/kprobes/testprobe/enable -ARGS=`tail -n 1 trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'` +gen_event() { # Bitsize + echo "p:testprobe _do_fork \$stack0:s$1 \$stack0:u$1 \$stack0:x$1 \$stack0:b4@4/$1" +} -check_types() { - X1=`printf "%x" $1 | tail -c 8` +check_types() { # s-type u-type x-type bf-type width + test $# -eq 5 + CW=$5 + CW=$((CW / 4)) + X1=`printf "%x" $1 | tail -c ${CW}` X2=`printf "%x" $2` X3=`printf "%x" $3` test $X1 = $X2 test $X2 = $X3 test 0x$X3 = $3 - B4=`printf "%02x" $4` - B3=`echo -n $X3 | tail -c 3 | head -c 2` + B4=`printf "%1x" $4` + B3=`printf "%03x" 0x$X3 | tail -c 2 | head -c 1` test $B3 = $B4 } -check_types $ARGS -echo "-:testprobe" >> kprobe_events -clear_trace -test -d events/kprobes/testprobe && exit_fail || exit_pass +for width in 64 32 16 8; do + : "Add new event with basic types" + gen_event $width > kprobe_events + grep testprobe kprobe_events + test -d events/kprobes/testprobe + + : "Trace the event" + echo 1 > events/kprobes/testprobe/enable + ( echo "forked") + echo 0 > events/kprobes/testprobe/enable + + : "Confirm the arguments is recorded in given types correctly" + ARGS=`grep "testprobe" trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'` + check_types $ARGS $width + + : "Clear event for next loop" + echo "-:testprobe" >> kprobe_events + clear_trace + +done + +exit_pass diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc index 2724a1068cb1..3fb70e01b1fe 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc @@ -4,9 +4,6 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -disable_events -echo > kprobe_events - :;: "Add an event on function without name" ;: FUNC=`grep " [tT] .*vfs_read$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` @@ -33,5 +30,3 @@ echo "p $FUNC" > kprobe_events EVENT=`grep $FUNC kprobe_events | cut -f 1 -d " " | cut -f 2 -d:` [ "x" != "x$EVENT" ] || exit_failure test -d events/$EVENT || exit_failure - -echo > kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc index cc4cac0e60f2..492426e95e09 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc @@ -8,8 +8,6 @@ grep function available_tracers || exit_unsupported # this is configurable # prepare echo nop > current_tracer echo _do_fork > set_ftrace_filter -echo 0 > events/enable -echo > kprobe_events echo 'p:testprobe _do_fork' > kprobe_events # kprobe on / ftrace off @@ -47,10 +45,3 @@ echo > trace ( echo "forked") grep testprobe trace ! grep '_do_fork <-' trace - -# cleanup -echo nop > current_tracer -echo > set_ftrace_filter -echo 0 > events/kprobes/testprobe/enable -echo > kprobe_events -echo > trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc index 1e9f75f7a30f..d861bd776c5e 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc @@ -4,14 +4,18 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -disable_events -echo > kprobe_events +rmmod trace-printk ||: +if ! modprobe trace-printk ; then + echo "No trace-printk sample module - please make CONFIG_SAMPLE_TRACE_PRINTK= +m" + exit_unresolved; +fi + +MOD=trace_printk +FUNC=trace_printk_irq_work :;: "Add an event on a module function without specifying event name" ;: -MOD=`lsmod | head -n 2 | tail -n 1 | cut -f1 -d" "` -FUNC=`grep -m 1 ".* t .*\\[$MOD\\]" /proc/kallsyms | xargs | cut -f3 -d" "` -[ "x" != "x$MOD" -a "y" != "y$FUNC" ] || exit_unresolved echo "p $MOD:$FUNC" > kprobe_events PROBE_NAME=`echo $MOD:$FUNC | tr ".:" "_"` test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure @@ -26,4 +30,24 @@ test -d events/kprobes/event1 || exit_failure echo "p:kprobes1/event1 $MOD:$FUNC" > kprobe_events test -d events/kprobes1/event1 || exit_failure -echo > kprobe_events +:;: "Remove target module, but event still be there" ;: +if ! rmmod trace-printk ; then + echo "Failed to unload module - please enable CONFIG_MODULE_UNLOAD" + exit_unresolved; +fi +test -d events/kprobes1/event1 + +:;: "Check posibility to defining events on unloaded module";: +echo "p:event2 $MOD:$FUNC" >> kprobe_events + +:;: "Target is gone, but we can prepare for next time";: +echo 1 > events/kprobes1/event1/enable + +:;: "Load module again, which means the event1 should be recorded";: +modprobe trace-printk +grep "event1:" trace + +:;: "Remove the module again and check the event is not locked" +rmmod trace-printk +echo 0 > events/kprobes1/event1/enable +echo "-:kprobes1/event1" >> kprobe_events diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc index 321954683aaa..ac9ab4a12e53 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc @@ -4,13 +4,16 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable -echo 0 > events/enable -echo > kprobe_events +# Add new kretprobe event echo 'r:testprobe2 _do_fork $retval' > kprobe_events -grep testprobe2 kprobe_events +grep testprobe2 kprobe_events | grep -q 'arg1=\$retval' test -d events/kprobes/testprobe2 + echo 1 > events/kprobes/testprobe2/enable ( echo "forked") + +cat trace | grep testprobe2 | grep -q '<- _do_fork' + echo 0 > events/kprobes/testprobe2/enable echo '-:testprobe2' >> kprobe_events clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_maxactive.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_maxactive.tc index 7c0290684c43..8e05b178519a 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_maxactive.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_maxactive.tc @@ -5,8 +5,6 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable grep -q 'r\[maxactive\]' README || exit_unsupported # this is older version -echo > kprobe_events - # Test if we successfully reject unknown messages if echo 'a:myprobeaccept inet_csk_accept' > kprobe_events; then false; else true; fi @@ -37,5 +35,3 @@ echo > kprobe_events echo 'r10 inet_csk_accept' > kprobe_events grep inet_csk_accept kprobe_events echo > kprobe_events - -clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc index ce361b9d62cf..5862eee91e1d 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc @@ -12,11 +12,6 @@ case `uname -m` in *) OFFS=0;; esac -if [ -d events/kprobes ]; then - echo 0 > events/kprobes/enable - echo > kprobe_events -fi - N=0 echo "Setup up kprobes on first available 256 text symbols" grep -i " t " /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \ diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc index 519d2763f5d2..a902aa0aaabc 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc @@ -30,8 +30,6 @@ if [ `printf "%x" -1 | wc -c` != 9 ]; then UINT_TEST=yes fi -echo 0 > events/enable -echo > kprobe_events echo "p:testprobe ${TARGET_FUNC}" > kprobe_events echo "p:testprobe ${TARGET}" > kprobe_events echo "p:testprobe ${TARGET_FUNC}${NEXT}" > kprobe_events @@ -39,5 +37,3 @@ echo "p:testprobe ${TARGET_FUNC}${NEXT}" > kprobe_events if [ "${UINT_TEST}" = yes ]; then ! echo "p:testprobe ${TARGET_FUNC}${OVERFLOW}" > kprobe_events fi -echo > kprobe_events -clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/profile.tc b/tools/testing/selftests/ftrace/test.d/kprobe/profile.tc new file mode 100644 index 000000000000..0384b525cdee --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/profile.tc @@ -0,0 +1,15 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe dynamic event - adding and removing + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +! grep -q 'myevent' kprobe_profile +echo p:myevent _do_fork > kprobe_events +grep -q 'myevent[[:space:]]*0[[:space:]]*0$' kprobe_profile +echo 1 > events/kprobes/myevent/enable +( echo "forked" ) +grep -q 'myevent[[:space:]]*[[:digit:]]*[[:space:]]*0$' kprobe_profile +echo 0 > events/kprobes/myevent/enable +echo > kprobe_events +! grep -q 'myevent' kprobe_profile |