This is a note to let you know that I've just added the patch titled
selftests/ftrace: Add new test case which checks non unique symbol
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
selftests-ftrace-add-new-test-case-which-checks-non-unique-symbol.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 03b80ff8023adae6780e491f66e932df8165e3a0 Mon Sep 17 00:00:00 2001
From: Francis Laniel <flaniel@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 20 Oct 2023 13:42:50 +0300
Subject: selftests/ftrace: Add new test case which checks non unique symbol
From: Francis Laniel <flaniel@xxxxxxxxxxxxxxxxxxx>
commit 03b80ff8023adae6780e491f66e932df8165e3a0 upstream.
If name_show() is non unique, this test will try to install a kprobe on this
function which should fail returning EADDRNOTAVAIL.
On kernel where name_show() is not unique, this test is skipped.
Link: https://lore.kernel.org/all/20231020104250.9537-3-flaniel@xxxxxxxxxxxxxxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Francis Laniel <flaniel@xxxxxxxxxxxxxxxxxxx>
Acked-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc | 13 ++++++++++
1 file changed, 13 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_non_uniq_symbol.tc
@@ -0,0 +1,13 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Test failure of registering kprobe on non unique symbol
+# requires: kprobe_events
+
+SYMBOL='name_show'
+
+# We skip this test on kernel where SYMBOL is unique or does not exist.
+if [ "$(grep -c -E "[[:alnum:]]+ t ${SYMBOL}" /proc/kallsyms)" -le '1' ]; then
+ exit_unsupported
+fi
+
+! echo "p:test_non_unique ${SYMBOL}" > kprobe_events
Patches currently in stable-queue which might be from flaniel@xxxxxxxxxxxxxxxxxxx are
queue-6.5/tracing-kprobes-return-eaddrnotavail-when-func-matches-several-symbols.patch
queue-6.5/selftests-ftrace-add-new-test-case-which-checks-non-unique-symbol.patch
