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authorMasami Hiramatsu <mhiramat@kernel.org>2017-03-23 14:33:32 +0100
committerShuah Khan <shuahkh@osg.samsung.com>2017-04-11 17:39:06 +0200
commit9e14ef602b9e19b5e3d4594494e45a00ed2bc6ca (patch)
treeef6b5045d9ff1958b02b9b5046d59aba71456d67 /tools
parentselftests: vm: add CONFIG_SYSVIPC=y to the config fragment (diff)
downloadlinux-9e14ef602b9e19b5e3d4594494e45a00ed2bc6ca.tar.xz
linux-9e14ef602b9e19b5e3d4594494e45a00ed2bc6ca.zip
kselftest: ftrace: Fix to compare a zero-filled hex value
Fix to compare a zero-filled hexadecimal value with a part of string of long hexadecimal value. In check_types(), the last part of testcase compares with the hex value formatted by "%x" with a part of a string of long hex value (trimmed by tail -c and head -c). However, if that part of long hex value contains zero (e.g. "05" of "a3082059"), printf generated value (e.g. "5") is diffrent string, and the test case failed. To fix this, pass "%02x" instead of "%x" to printf. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc2
1 files changed, 1 insertions, 1 deletions
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 0a78705b43b2..c75faefb4fff 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
@@ -26,7 +26,7 @@ check_types() {
test $X2 = $X3
test 0x$X3 = $3
- B4=`printf "%x" $4`
+ B4=`printf "%02x" $4`
B3=`echo -n $X3 | tail -c 3 | head -c 2`
test $B3 = $B4
}