diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc')
-rw-r--r-- | tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc | 99 |
1 files changed, 99 insertions, 0 deletions
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 new file mode 100644 index 000000000..474ca1a9a --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_syntax.tc @@ -0,0 +1,99 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event argument syntax +# requires: kprobe_events "x8/16/32/64":README + +PROBEFUNC="vfs_read" +GOODREG= +BADREG= +GOODSYM="_sdata" +if ! grep -qw ${GOODSYM} /proc/kallsyms ; then + GOODSYM=$PROBEFUNC +fi +BADSYM="deaqswdefr" +SYMADDR=0x`grep -w ${GOODSYM} /proc/kallsyms | cut -f 1 -d " "` +GOODTYPE="x16" +BADTYPE="y16" + +case `uname -m` in +x86_64|i[3456]86) + GOODREG=%ax + BADREG=%ex +;; +aarch64) + GOODREG=%x0 + BADREG=%ax +;; +arm*) + GOODREG=%r0 + BADREG=%ax +;; +ppc*) + GOODREG=%r3 + BADREG=%msr +;; +*) + echo "Please implement other architecture here" + exit_untested +esac + +test_goodarg() # Good-args +{ + while [ "$1" ]; do + echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +test_badarg() # Bad-args +{ + while [ "$1" ]; do + ! echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +echo > kprobe_events + +: "Register access" +test_goodarg ${GOODREG} +test_badarg ${BADREG} + +: "Symbol access" +test_goodarg "@${GOODSYM}" "@${SYMADDR}" "@${GOODSYM}+10" "@${GOODSYM}-10" +test_badarg "@" "@${BADSYM}" "@${GOODSYM}*10" "@${GOODSYM}/10" \ + "@${GOODSYM}%10" "@${GOODSYM}&10" "@${GOODSYM}|10" + +: "Stack access" +test_goodarg "\$stack" "\$stack0" "\$stack1" +test_badarg "\$stackp" "\$stack0+10" "\$stack1-10" + +: "Retval access" +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(${GOODREG})" "+10(\$stack)" \ + "+0(\$stack1)" "+10(@${GOODSYM}-10)" "+0(+10(+20(\$stack)))" +test_badarg "+(${GOODREG})" "(${GOODREG}+10)" "-(${GOODREG})" "(${GOODREG})" \ + "+10(\$comm)" "+0(${GOODREG})+10" + +: "Name assignment" +test_goodarg "varname=${GOODREG}" +test_badarg "varname=varname2=${GOODREG}" + +: "Type syntax" +test_goodarg "${GOODREG}:${GOODTYPE}" +test_badarg "${GOODREG}::${GOODTYPE}" "${GOODREG}:${BADTYPE}" \ + "${GOODTYPE}:${GOODREG}" + +: "Combination check" + +test_goodarg "\$comm:string" "+0(\$stack):string" +test_badarg "\$comm:x64" "\$stack:string" "${GOODREG}:string" |