4.14-stable review patch. If anyone has any objections, please let me know.
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From: Masami Hiramatsu mhiramat@kernel.org
[ Upstream commit 5e46664703b364434a2cbda3e6988fc24ae0ced5 ]
Fix to pick text symbols for multiple kprobe testcase. kallsyms shows text symbols with " t " or " T " but current testcase picks all symbols including "t", so it picks data symbols if it includes 't' (e.g. "str").
This fixes it to find symbol lines with " t " or " T " (including spaces).
Signed-off-by: Masami Hiramatsu mhiramat@kernel.org Reported-by: Russell King linux@armlinux.org.uk Acked-by: Steven Rostedt (VMware) rostedt@goodmis.org Signed-off-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/multiple_kprobes.tc @@ -12,8 +12,8 @@ case `uname -m` in *) OFFS=0;; esac
-echo "Setup up to 256 kprobes" -grep t /proc/kallsyms | cut -f3 -d" " | grep -v .*\..* | \ +echo "Setup up kprobes on first 256 text symbols" +grep -i " t " /proc/kallsyms | cut -f3 -d" " | grep -v .*\..* | \ head -n 256 | while read i; do echo p ${i}+${OFFS} ; done > kprobe_events ||:
echo 1 > events/kprobes/enable