From: Masami Hiramatsu (Google) mhiramat@kernel.org
[ Upstream commit 96cd93af794cf3ef83ae1ad7291160029d7b525e ]
Fix kprobe probepoint testcase to ignore __pfx_* prefix symbols. Those are introduced by commit b341b20d648b ("x86: Add prefix symbols for function padding") for identifying PADDING_BYTES of NOPs. Since kprobe events can not probe these prefix symbols, this testcase has to skip those symbols.
Link: https://lore.kernel.org/all/167309835609.640500.9664678940260305746.stgit@de...
Fixes: b341b20d648b ("x86: Add prefix symbols for function padding") Signed-off-by: Masami Hiramatsu (Google) mhiramat@kernel.org Reviewed-by: Steven Rostedt (Google) rostedt@goodmis.org Acked-by: Shuah Khan skhan@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc index 624269c8d5343..68425987a5dd9 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/probepoint.tc @@ -21,7 +21,7 @@ set_offs() { # prev target next
# We have to decode symbol addresses to get correct offsets. # If the offset is not an instruction boundary, it cause -EILSEQ. -set_offs `grep -A1 -B1 ${TARGET_FUNC} /proc/kallsyms | cut -f 1 -d " " | xargs` +set_offs `grep -v __pfx_ /proc/kallsyms | grep -A1 -B1 ${TARGET_FUNC} | cut -f 1 -d " " | xargs`
UINT_TEST=no # printf "%x" -1 returns (unsigned long)-1.