From: Vasily Gorbik <gor@linux.ibm.com>
Date: Fri, 22 Nov 2019 16:37:50 +0000 (+0100)
Subject: s390/test_unwind: require that unwinding ended successfully
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~3308^2~10
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=f44fa79b104b56d53d33ae43e69bab98b63d4783;p=linux.git

s390/test_unwind: require that unwinding ended successfully

Currently unwinder test passes if unwinding results contain unwindme_func2
and unwindme_func1 functions.
Now that unwinder reports success upon reaching task pt_regs, check
that unwinding ended successfully in every test.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---

diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c
index 5636da941f1f..2839f8cb691d 100644
--- a/arch/s390/lib/test_unwind.c
+++ b/arch/s390/lib/test_unwind.c
@@ -71,6 +71,10 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs,
 	}
 
 	/* Check the results. */
+	if (unwind_error(&state)) {
+		pr_err("unwind error\n");
+		ret = -EINVAL;
+	}
 	if (!seen_func2_func1) {
 		pr_err("unwindme_func2 and unwindme_func1 not found\n");
 		ret = -EINVAL;