selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tcgrafted

The current regex also matches symbols in modules, which makes the
test fail on s390 where name_show is present only once in the kernel,
but also multiple times in modules:

000001b1401cdc20 t name_show
000001b0c05e6c40 t name_show    [mdev]
000001b0c0495f30 t name_show    [i2c_core]

Fix this by changing the regular expression to only match the function
name.

Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/

Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/arch/powerpc/math-emu/lfd.c b/arch/powerpc/math-emu/lfd.c
new file mode 100644
index 000000000..3a6b03d99
--- /dev/null
+++ b/arch/powerpc/math-emu/lfd.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/uaccess.h>
+
+#include <asm/sfp-machine.h>
+#include <math-emu/double.h>
+
+int
+lfd(void *frD, void *ea)
+{
+	if (copy_from_user(frD, ea, sizeof(double)))
+		return -EFAULT;
+#ifdef DEBUG
+	printk("%s: D %p, ea %p: ", __func__, frD, ea);
+	dump_double(frD);
+	printk("\n");
+#endif
+	return 0;
+}